• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes/issues, but are citable by Digital Object Identifier (DOI).
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Sensorless Control Method of High-Frequency Signal Injection for Long-Stator Synchronous Motor of Maglev Trains Considering Phase Shift Compensation
ZHANG Wenbai, LIN Guobin, KANG Jinsong, ZHAO Yuanzhe, LIAO Zhiming
, Available online  , doi: 10.3969/j.issn.0258-2724.20240310
Abstract:

In order to study the influence of high-frequency signal injection (HFSI) response to electrical angle phase shift on the low-speed control accuracy of maglev trains, the constraint relationship between the control delay and the sampling delay on the angular error lag was considered, and a compensat...

Active Disturbance Rejection Speed Control for Maglev Trains Based on Multiple Population Genetic Algorithm
LI Zikang, DAI Chunhui, HUANG Cuicui, LONG Zhiqiang
, Available online  , doi: 10.3969/j.issn.0258-2724.20240113
Abstract:

Compared with traditional wheel-rail transportation, maglev trains have some irreplaceable advantages such as high speed, low noise, smooth operation, and low maintenance cost. To realize precise speed control of maglev trains in complex disturbance environments, an active disturbance rejection cont...

Cutter Layout on Special-Shaped Cutterhead for Shaft Boring Machine
HUANG Hongying, GUAN Huisheng, MU Guowang, LUO Yi, XIE Yuan
, Available online  , doi: 10.3969/j.issn.0258-2724.20230496
Abstract:

In order to solve the problem of difficult cutter layout on a W-shaped cutterhead for a shaft boring machine, the influence of cutter installation and arrangement parameters on the rock breaking effect of cutters was studied based on the discrete element method, and the overall layout optimization s...

Flexural Bearing Performance of Prestressed Concrete Pipe Piles with Hybrid Reinforcement under Influence of Prestressed Control Level and Hybrid Reinforcement
TANG ChangYi, XU Yan, CUI Kai, CHEN Feng, HOU Weisheng, ZHANG Shengjie
, Available online  , doi: 10.3969/j.issn.0258-2724.20230393
Abstract:

The actual flexural bearing capacity of prestressed concrete pipe piles with hybrid reinforcement (PRC pipe piles) is different from the theoretical design value due to the influence of prestressed control level and hybrid reinforcement, which leads to the potential risk of pile body damage or perfo...

Fluctuation Characteristics of Wavy Vortex Field Within Annular Gap in Taylor-Couette
MAO Yuhong, CHEN Chao, LI Yarong, FU Haiyu
, Available online  , doi: 10.3969/j.issn.0258-2724.20230308
Abstract:

The large eddy simulation (LES) method was applied to transiently simulate the wavy vortex field within the annular gap in Taylor-Couette and investigate the variation of fluctuations between wavy vortices. The wavy vortex field within the annulus gap was investigated from both two-dimensional and t...

Influence of Stress-Free Temperature Difference on Force Characteristics of Seamless Turnouts in Plateau Areas
GAO Yuan, YANG Dongsheng, WANG Shuguo
, Available online  , doi: 10.3969/j.issn.0258-2724.20230222
Abstract:

To investigate the feasibility of laying seamless turnouts in plateau areas and the influence of plateau climate on the stability of seamless turnouts across areas, the effect of stress-free temperature difference on the force characteristics of seamless turnouts under different climates, elevations...

Dimensional Synthesis Approach for Planar Open Path Based on Chord Angle Descriptor
ZHU Liuxian, WEI Wei, LI Li
, Available online  , doi: 10.3969/j.issn.0258-2724.20230148
Abstract:

To overcome the issues of huge computation and low retrieval efficiency in extracting planar open path by numerical atlas, a dimension synthesis approach was proposed based on chord angle descriptor. To begin with, by using the invariance of translation, rotation, and scaling of the chord angle desc...

Research on Vehicle Head-on Collision Accident Reconstruction System Based on Inverse Analysis
LIU Yongtao, GAO Longxin, FANG Tengyuan, YAN Xingpei, YANG Jingshuai, HUA Haining
, Available online  , doi: 10.3969/j.issn.0258-2724.20240169
Abstract:

To enhance the precision and effectiveness of vehicle collision accident reconstruction, equations for calculating collision velocities were formulated based on the conservation laws of momentum and angular momentum. Using rotational transformations of the collision coordinate system, an analytical ...

Optimization Model and Algorithm of Additional Trains Scheduling in High-Speed Railway Timetables Considering Passenger Demand
ZHAO Tainyin, ZHANG Yongxiang, WANG Wei, PENG Qiyuan, GUO Jingwei
, Available online  , doi: 10.3969/j.issn.0258-2724.20240637
Abstract:

Objective: Railway operators enhance the alignment between transportation services and passenger demand by making quarterly adjustments to the basic train timetable and daily preparation of the next-day train operation plan based on the basic timetable. However, the structural complexity of the basi...

Research Status and Prospects of Computer Vision-Based Crack Detection of Concrete Structure
XIE Mingzhi, FAN Dingmeng, JIANG Zhipeng, DENG Fei, WANG Kun, HAN Chen, YANG Yongqing
, Available online  , doi: 10.3969/j.issn.0258-2724.20240115
Abstract:

As one of the important contents of health monitoring of concrete structure, crack detection reflects the stress and damage state of the structure, and the detection and evaluation is the core technology to ensure structure safety for service. The traditional detection methods have limited coverage ...

Seismic Fragility Analysis of Shallow-Buried Subway Station Structure in Loess Strata
SUN Weiyu, ZHU Hui, YAN Songhong, LIANG Qingguo, ZHANG Jianzhe, YANG Bin, ZHANG Rongling
, Available online  , doi: 10.3969/j.issn.0258-2724.20230597
Abstract:

In order to study the seismic fragility of subway stations situated in loess sites, a typical two-story three-span subway station structure in a loess area was chosen as a representative example, and incremental dynamic analysis (IDA) was conducted on the subway station structure by using the ground...

Large Deformation Control of Tunnel Surrounding Rock Based on Advance Stress Release and Grouting Reinforcement
WANG Junjie, ZHANG Shuai
, Available online  , doi: 10.3969/j.issn.0258-2724.20230706
Abstract:

To address the limitations of using an advance guide tunnel for controlling large deformations of surrounding rock in soft rock tunnels, a deformation control method of “advance stress release + circumferential (lagging) grouting + lengthened anchor rod” was proposed after a thorough analysis of the...

Calculations for Transition Displacement and Design Optimization for Moveable Point Frog
ZHAO Zhenhua, WANG Pu, GAO Yuan, WANG Shuguo
, Available online  , doi: 10.3969/j.issn.0258-2724.20230294
Abstract:

To reduce insufficient displacement in the contact area between the movable point frog’s point rail and wing rail, minimize transition force at the transition points of point rail, and improve the frog’s longitudinal smoothness, an optimization method for the design parameters and key components of ...

Shear Bearing Capacity of Ultra-High Performance Concrete Keyed Joints Based on Shear-Compression Strength Criterion
XU Lueqin, XU Yihong, CHEN Liang, JIANG Linsong, ZHOU Jianting
, Available online  , doi: 10.3969/j.issn.0258-2724.20230042
Abstract:

To find out the shear bearing capacity and its calculation method of ultra-high performance concrete (UHPC) keyed joints, a full-scale model test of five UHPC keyed joints and a UHPC flat joint were carried out with the joint type and lateral compressive stress as parameters. The failure mode and th...

Electric Truck Route Planning Considering Multiple Charging Pile Queues and Time Windows
HU Lu, LE Shitong, ZHU Juanxiu
, Available online  , doi: 10.3969/j.issn.0258-2724.20230084
Abstract:

In the electric truck route planning problem with time windows, electric trucks may need to queue up when they go to charging stations for charging. To study the impact of different charging station configuration schemes on vehicle route planning and system performance, the queuing model was first b...

Seismic Testing and Calculation Method of Assembled Bridge Piers with Hybrid Connection of Engineered Cementitious Composites and Assembled Mortise-Tenon Joints
LIN Shangshun, LIN Yongjie, ZHANG Jianshuai, ZHAO Jinbing
, Available online  , doi: 10.3969/j.issn.0258-2724.20230040
Abstract:

In order to improve the force performance and durability of assembled bridge piers, it was proposed to adopt the assembled bridge piers with hybrid connection of cast-in-place fiber-reinforced engineered cementitious composites (ECC) and assembled mortise and tenon joints and carry out the pseudo-st...

Review of Research on Vulnerability of Transportation Infrastructure to Extreme Climatic Conditions
JIA Hongyu, XIAO Chuzhao, KANG Wei, WANG Chuanqi, ZHENG Shixiong
, Available online  , doi: 10.3969/j.issn.0258-2724.20230650
Abstract:

The intensifying global climate change is increasingly affecting the operational performance of existing transportation infrastructure due to extreme climatic events such as heavy precipitation, high temperatures, low temperatures, and drought, leading to severe damage. Meanwhile, with the further i...

Two-stage Analysis Method for Influence of Foundation Pit Excavation on Adjacent Existing Roads
ZHANG Kunyong, LI Junji, ZHANG Chi, LI Fudong, ZHU Cheng
, Available online  , doi: 10.3969/j.issn.0258-2724.20220850
Abstract:

To address the issue of settlement and cracking of adjacent roads during the excavation of urban foundation pits, the research object was extended from a one-dimensional structure to a two-dimensional structure based on the Winkler theory. Firstly, a calculation model for the settlement field caused...

Optimal Design of Power Supply Scheme for Sharing Resources in Urban Rail Interchange Stations
LIU Wei, DENG Haotian, XU Qian, RAO Xiaoming
, Available online  , doi: 10.3969/j.issn.0258-2724.20230146
Abstract:

In the context of power supply resource sharing between different lines through interchange stations, optimizing the power supply system design can help reduce active power losses in the network. By considering the constraints of multi-operation scenarios, a novel optimal design method for a power s...

Experimental Study on Friction and Sliding Performance of Laminated-Rubber Bearings Based on Shear Aging Resistance
CUI Haomeng, SHAO Changjiang, WANG Chunyang, XUE Hao, GAO Jian, LI Zhizhong, ZHUANG Weilin, QI Qiming
, Available online  , doi: 10.3969/j.issn.0258-2724.20240180
Abstract:

To investigate the friction and sliding performance of laminated-rubber bearings under aging conditions, heat aging tests and quasi-static tests were conducted based on the related provisions of shear aging resistance in the bearing specification. Firstly, the actual working state of the bearing in ...

Fatigue Damage of Tied-Arch Bridge Hangers Based on Train-Bridge Coupling
PENG Yipu, TANG Zhiyuan, CHEN Li, LI Jian, LI Zichao
, Available online  , doi: 10.3969/j.issn.0258-2724.20230450
Abstract:

To study the fatigue damage inflicted on hangers by high-speed trains passing over a concrete-filled steel-tube tied-arch bridge, field dynamic load tests were conducted against the backdrop of the Qinjiang Bridge in Qinzhou, Guangxi Province. These tests measured the bridge’s modal parameters, disp...

Review of Research on Vehicle Hydro-Pneumatic Suspension Technology
LIU Xiumei, LI Yongtao
, Available online  , doi: 10.3969/j.issn.0258-2724.20230168
Abstract:

The hydro-pneumatic suspension has the functions of cushioning and damping, body attitude adjustment, etc., but its structure is complex, with large pressure impact and high wear resistance and sealing. The excellent suspension cylinder structure, hydro-pneumatic suspension system, and control metho...

Co-optimization Algorithm for Measurement Matrix of Compressive Sensing
YANG Liu, BAI Chaoyuan, FAN Pingzhi
, Available online  , doi: 10.3969/j.issn.0258-2724.20230032
Abstract:

For the compressive sensing algorithm, the correlation between measurement matrix and sparse base always determines the accuracy of signal recovery. In order to improve the performance of the compressive sensing algorithm in signal reconstruction in large-scale communication scenarios, the measureme...

Prediction of Discrete Element Breakage Parameter for Ballast Particles Based on Genetic Algorithm–Back Propagation Neural Network Model
WANG Xuejun, YANG Hanxiong
, Available online  , doi: 10.3969/j.issn.0258-2724.20240069
Abstract:

To optimize the deterioration assessment and maintenance of ballasted tracks, it is of great value to study the breakage process and mechanism of ballast particles. Through a uniaxial breakage test on the single ballast particle, the equivalent stress required for its failure was determined. The def...

Comparison of Shear Behaviors of Different Concrete-Filled High-Strength Steel Tubes
WANG Jiali, WANG Ying, CHEN Xiwen, YANG Dongxu, LAI Zhichao
, Available online  , doi: 10.3969/j.issn.0258-2724.20230485
Abstract:

A total of 16 concrete-filled high-strength steel tube specimens were designed to evaluate the effects of shear-to-span ratio and concrete strength on the shear behavior of concrete-filled high-strength steel tube specimens. The failure mode and shear-displacement curve of the specimens were obtaine...

Experimental Study on Injection Stability of Common Rail Injector Based on Spray Momentum Method
ZHAO Jianhui, XU Yu, YANG Guichun, XU Dan, WANG Wei
, Available online  , doi: 10.3969/j.issn.0258-2724.20230335
Abstract:

In order to study the injection law of each nozzle hole of the common rail injector, an injection pattern measuring device for multi-hole injectors was developed based on the momentum method. Under different load conditions, the developed device was used to measure the injection rate of each nozzle ...

Determination Method of Rock Strength Based on Digital Drilling Parameters
JIA Chaojun, CHEN Fanlei, LEI Mingfeng, HUANG Juan, SHI Chenghua, LIU Di
, Available online  , doi: 10.3969/j.issn.0258-2724.20230328
Abstract:

Rock strength is a critical parameter for assessing rock stability and safety. Efficient and accurate prediction of rock strength can effectively guide tunnel excavation and support. Digital drilling parameters and mechanical property data of rock were collected from various devices. By analyzing en...

Time-Dependent Reliability Analysis of LS-FA-211001 Suction Anchor Under Cyclic Load
YANG Shunqi, QIAN Huaming, ZHONG Zeqi, XU Guohua, HUANG Hongzhong
, Available online  , doi: 10.3969/j.issn.0258-2724.20230185
Abstract:

To effectively evaluate the reliability level of the LS-FA-211001 suction anchor during application, the cumulative effect of external loads was considered, and a time-dependent reliability model was established under cyclic loads. The time-dependent reliability analysis of the suction anchor was ca...

Comparison of Stress-Dilatancy Rules and Research on Stress-Dilatancy Rule for Rocks
LIANG Jiguan, HUANG Linchong, MA Jianjun, CHEN Wanxian
, Available online  , doi: 10.3969/j.issn.0258-2724.20230231
Abstract:

In order to evaluate the prediction accuracy of typical stress-dilatancy rules on the mechanical response of common geomaterials, propose a stress-dilatancy rule suitable for rocks, and improve the accuracy of constitutive models, typical stress-dilatancy rules were compared with experimental data t...

Aerodynamic Characteristics of Open Wire of Superconducting Maglev Train and Its Influence on Levitation State
ZHAO Chunfa, LI Yuhan, Peng Yeye, YANG Jing, NING Xiaofang, FENG Yang
, Available online  , doi: 10.3969/j.issn.0258-2724.20240470
Abstract:

The design speed of the superconducting maglev train reaches 600 km/h, causing intensified flow around the vehicle body and a sharp rise in aerodynamic loads. To study the train’s levitation state under aerodynamic loads, the finite element method was used, and the SST k-ω turbulence model was adopt...

Vibration and Stability Evaluation of Magnetically Suspended Fluid Machinery Based on API617
ZHANG Yue, XU Yuanping, ZHOU Jin, ZHOU Yang
, Available online  , doi: 10.3969/j.issn.0258-2724.20240340
Abstract:

To evaluate the design rationality and operation reliability of the magnetically suspended fluid machinery, the API617 standard was applied to analyze its vibration and stability. Firstly, the relevant specifications and requirements for magnetically suspended fluid machinery in the API617 standard ...

Lateral Control of Permanent Magnet Electrodynamic Suspension Vehicle Based on Improved Nonlinear Model Predictive Controller
BI Jingguo, KE Zhihao, YANG Yiying, LI Zhengyan, DENG Zigang
, Available online  , doi: 10.3969/j.issn.0258-2724.20240494
Abstract:

Objective: The permanent magnet electrodynamic suspension (PMEDS) vehicle, with its integrated levitation and propulsion system, shows significant potential for applications in areas such as ultra-high-speed and heavy-load highways, as well as mountainous road transportation. However, the PMEDS vehi...

Study on Uniaxial Tensile Test and Constitutive Model of Steel Structure Coating
WEI Yapeng
, Available online  , doi: 10.3969/j.issn.0258-2724.20230591
Abstract:

To study the mechanical constitutive model of steel bridge coating, uniaxial tensile tests were carried out on the long-lasting coating system, obtaining the stress–strain curves for the topcoat, intermediate coat, primer, and composite coating. The unified expression for the constitutive equation o...

Experimental Study on Permeability of Soil–Phyllite Mixture in Northwest Sichuan
ZENG Caiyun, ZHAO Xiaoyan
, Available online  , doi: 10.3969/j.issn.0258-2724.20230718
Abstract:

The soil–phyllite mixtures are widely distributed in the northwest of Sichuan, and excavation of slopes in these areas under rainfall conditions can cause large-scale instability, posing threats to the safety of transportation engineering construction and operation. The permeability characteristics ...

Energy Evolution Mechanism and Constitutive Model of Sandstone Subjected to Different Temperatures
LEI Ruide, ZHOU Linsen, HU Chao, LI Menglai, HUANG Ling
, Available online  , doi: 10.3969/j.issn.0258-2724.20230714
Abstract:

To investigate the effect of high temperature on the deterioration of the physical and mechanical properties of sandstone, uniaxial compression tests were conducted on thermally-treated sandstone subjected to different temperatures. Firstly, the deterioration characteristics of macroscopic mechanica...

Fast Simulation Method for Pantograph and Overhead Conductor Rail System
CHEN Long, LIU Zhigang, DUAN Fuchuan, HU Zeyao, XU Zhao, CHEN Ke
, Available online  , doi: 10.3969/j.issn.0258-2724.20230206
Abstract:

Finite element model simulation of the pantograph and overhead conductor rail (OCR) system is slow, and the time cost of calculation is high. Therefore, the simulation method and process of the pantograph and OCR system using three-dimensional contact formulation were improved. Firstly, the equation...

Damage Failure of Two Alloy Seal Rings Paired with Impregnated Graphite
ZHENG Jing, HE Jiaxin, LEI Lei, YANG Dan, HUANG Yuanbao, ZHANG Erqing, ZHANG Chening
, Available online  , doi: 10.3969/j.issn.0258-2724.20220641
Abstract:

Cr alloy seal ring and YG-6 cemented carbide seal ring were used to pair with impregnated graphite seal ring in a petrochemical pump at 300–400 ℃, respectively. It was found that the Cr alloy seal ring maintained good sealing performance for a long-term service, while gas leakage occurred to the cem...

Characteristics Analysis of Lithium Metal Batteries with Ultra-High Energy Density under Pressure Conditions
SHI Wei, CHAI Jin, XIA Mingyuan
, Available online  , doi: 10.3969/j.issn.0258-2724.20240033
Abstract:

External pressure plays a crucial role in the performance of lithium metal batteries. In order to study the macroscopic performance and the microscopic lithium deposition characteristics of lithium metal batteries under different pressure conditions, the pressure test and scanning electron microscop...

Modeling and Simulation of a Novel Heteropolar Radial Hybrid Magnetic Bearing
LIU Xin, YUAN Pengyu
, Available online  , doi: 10.3969/j.issn.0258-2724.20230315
Abstract:

For environments with high space utilization rate requirements such as high-speed motors and flywheel energy storage systems, a novel heteropolar radial hybrid magnetic bearing (HRHMB) was proposed. Firstly, the equivalent magnetic circuit model of the new magnetic bearing was established, and the c...

Theoretical Analysis and Experimental Study of T-Shaped Retrofitting Schemes of Diagonal Members for Transmission Towers
WU Hainan, XIE Qiang, LI Yue, WU Minger, YAN Cong
, Available online  , doi: 10.3969/j.issn.0258-2724.20240435
Abstract:

To optimize the T-shaped retrofitting scheme of diagonal members, the influence of structural and material parameters on the bearing capacity of the members after retrofitting was investigated through theoretical analysis, experimental study, and finite element analysis. Firstly, a theoretical model...

Restraints on Seismic Performance of Slab Stone Walls of Tibetan and Qiang Residential Buildings by Reinforcement Skeleton System
MO You, YANG Baoshan, BAO Zhonghui, XU Yuanmin, CHEN Fan, LIU Baijiang, CHEN Feiyang, ZENG Yusheng
, Available online  , doi: 10.3969/j.issn.0258-2724.20230235
Abstract:

In order to improve the seismic performance while maintaining the original style of the slab stone walls of Tibetan and Qiang residential buildings, the construction method of putting restraints on the slab stone walls of Tibetan and Qiang residential buildings by using a reinforcement skeleton syst...

Optimization of JM3 Wheel Profile Considering Equivalent Conicity Dispersion
MENG Fanyu, SHEN Longjiang, DENG Xiaoxing, YAO Yuan
, Available online  , doi: 10.3969/j.issn.0258-2724.20230173
Abstract:

Wheel-rail profile compatibility has an important influence on the dynamic performance of rail vehicles. The present standard JM3 wheel profile has a large difference in equivalent conicity when it is matched with different types of rail profiles in China. It has the problem of locomotive swaying ca...

Vulnerability Analysis of En-route Network Based on Cascading Failure
TIAN Wen, ZHOU Xuefang, FANG Qin, SONG Jinjin
, Available online  , doi: 10.3969/j.issn.0258-2724.20220755
Abstract:

In order to explore the variation of the vulnerability of the en-route network caused by cascading failure, the vulnerability of the en-route network was analyzed based on the cascading failure process of different attack methods. By combining with the actual overcapacity operation of the en-route n...

4D Trajectory Prediction of Continuous Descent Operation in Congested Terminal Control Area
WANG Chao, CHEN Hanlu, QIN Hongkun, LIU Bo
, Available online  , doi: 10.3969/j.issn.0258-2724.20230380
Abstract:

In order to implement continuous descent operation (CDO) in a congested terminal control area and estimate its CO2 emission reduction benefits, a 4D trajectory prediction method for CDO based on data drive and optimal control theory was proposed. Firstly, the affinity propagation trajectory clusteri...

Fine Urban Land Use Identification Based on Fusion of Multi-source Data
LI Linchao, ZHONG Liangjian, SU Qing, REN Lu, DU Bowen
, Available online  , doi: 10.3969/j.issn.0258-2724.20230296
Abstract:

Land use type in China is complex, and it is difficult to accurately identify urban land use type by relying on a single remote sensing image or point of interest (POI) data. To address this issue, a fine identification method combining remote sensing images and POI data was proposed. Firstly, to fi...

Identification of Wheel-Rail Vertical Forces of Rail Vehicles Based on Square Root Cubature Kalman Filter Algorithm
CHEN Qinghua, GE Xin, WANG Kaiyun
, Available online  , doi: 10.3969/j.issn.0258-2724.20230048
Abstract:

The wheel-rail interaction force is the key index to evaluate the operation quality of rail vehicles. An identification method based on the square root cubature Kalman filter (SRCKF) algorithm was proposed for online monitoring of the wheel-rail vertical force of rail vehicles. By taking the vehicle...

Optimization of Joint Navigation Scheduling of Cascade Hubs in Inland River Basin from Perspective of Carbon Emission Reduction
GAO Pan, FANG Zhiwei, ZHAO Xu
, Available online  , doi: 10.3969/j.issn.0258-2724.20230002
Abstract:

In view of non-uniform operation rules of ship locks and non-synchronous ship scheduling in the joint navigation scheduling of cascade hubs, a multi-dimensional nonlinear programming (MDNP) model considering ship priority was constructed with the comprehensive navigation efficiency of ships, the cos...

Cause of Rail Corrugation on Ladder Sleeper Track
SONG Qifeng, CHEN Guangxiong, DONG Bingjie, ZHANG Juncai, FENG Xiaohang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230573
Abstract:

To study the formation mechanism of inner rail corrugation on the ladder sleeper track in the small-radius curve, a finite element model of the leading wheelset–ladder sleeper track system was developed based on the theory that self-excited frictional vibration triggered by saturated wheel-rail cree...

Method of Determining Design Value of Rockfall Block Size Based on the Return Period
WANG Yusuo, LYU Ningning, WANG Mingnian, TANG Jianhui, YANG Junxiang, ZHAO Zhuang, XIAO Peng, AN Bo
, Available online  , doi: 10.3969/j.issn.0258-2724.20240240
Abstract:

The rockfall events on transport lines in mountainous areas occur frequently and are sudden and random. Probability-based reliability design of protective structures is a necessary and effective means to reduce the hazard risk. However, the method of determining the design value of rockfall size, as...

Sensorless Control of Permanent Magnet Synchronous Motor Based on Improved Super-Twisting Sliding Mode Observer
WANG Tao, HUANG Jingchun, ZHOU Xingzhi, JIN Jing
, Available online  , doi: 10.3969/j.issn.0258-2724.20220793
Abstract:

In the wide speed range of sensorless control, the traditional super-twisting second-order sliding mode observer algorithm had a problem that the error of rotor position estimation would change with the speed in the permanent magnet synchronous motor (PMSM). In order to improve the control performan...

Miniaturized Dual-Band Trackside Antenna Design and Its Electromagnetic Compatibility Study
ZHOU Wenying, XU Jinjing, LU Mai, LI Yuxin
, Available online  , doi: 10.3969/j.issn.0258-2724.20240220
Abstract:

To meet the demand for 5G communication in tunnels and increase the utilization rate of trackside antennas, a dual-band trackside antenna based on metamaterials was proposed, which could support both automatic train control systems and civil 5G wireless communication. First, a miniaturized dual-band...

Rotational Inertial Characteristics and Dynamic Response of Motorized Spindle Time-Varying Mass System for Magnetic Suspension Milling
KANG Huimin, XI Jiale, LIU Houcai, DUAN Lianghui
, Available online  , doi: 10.3969/j.issn.0258-2724.20240295
Abstract:

As chips continuously enter and leave from the tool flute during the cutting process of the motorized spindle for magnetic suspension milling, the size and distribution of the system mass are constantly changing, leading to the nonlinear change of system dynamics characteristics. To address these is...

Analysis of Longitudinal Force Distribution Characteristics and Arching Mechanism of Longitudinally Connected Track Slabs in Bridge-Subgrade Transition Section
CAI Xiaopei, WANG Changchang, DONG Bo, CHEN Zelin, ZHANG Qian
, Available online  , doi: 10.3969/j.issn.0258-2724.20230424
Abstract:

The mechanical behavior of longitudinally connected ballastless track slabs in the transition section of subgrade and bridge is complex, and arching disease is frequent. The П-type end spine ballastless track in the transition section of subgrade and bridge was taken as the research object, and a tr...

Freeze-Thaw Resistance of Red Mud-Based Stabilized Crushed Stone
HE Jingyuan, GAO Weihao, ZHANG Jian, WANG Chuan, LI Zhaofeng, YOU Hao
, Available online  , doi: 10.3969/j.issn.0258-2724.20230350
Abstract:

In order to achieve the safe application of red mud-based cementitious materials in road engineering, the mechanical properties and quality of red mud-based stabilized crushed stone base under freeze-thaw cycles were studied. The influence of freeze-thaw cycle temperature and number on mechanical pr...

Influence of Vertical Stiffness of Continuous Girder on Dynamic Responses of High-Speed Electromagnetic Suspension Train and Bridge
CHEN Xuli, XIANG Huoyue, TIAN Xiangfu, LI Yongle, CAO Wenjie
, Available online  , doi: 10.3969/j.issn.0258-2724.20230382
Abstract:

Vertical stiffness is critically significant for the operational safety and ride comfort of high-speed electromagnetic suspension (EMS) trains on bridges, constituting one of the essential design parameters in bridge engineering. By using a three-span continuous girder as the study object, the verti...

Nonlinear Aerodynamic Force Identification and Nonlinear Flutter Analysis Based on Autoencoder
MEI Hanyu, LIAO Haili, WANG Changjiang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230261
Abstract:

In order to identify the nonlinear aerodynamic forces and calculate nonlinear flutters of a nonlinear dynamic system, an autoencoder model based on the neural network method and numerical solution of motion equation was proposed. The 5∶1 rectangular cross-section was taken as the research object. Th...

Detection of Air Gap Defects in Cable Terminals of Electric Multiple Units Based on Electric Field Characteristics
TANG Yujing, GAO Guoqiang, XU Yuqi, XIN Dongli, LIU Kai, CHEN Kui, WU Guangning
, Available online  , doi: 10.3969/j.issn.0258-2724.20230244
Abstract:

The existing detection methods for the insulation of cable terminals of electric multiple units (EMUs) are complex and susceptible to onsite noise interference, and they thus have low detection efficiency. Therefore, a novel method for detecting the insulation condition of cable terminals based on e...

Overall Reliability Analysis of Transmission Towers with Asymmetrical Legs Based on Sample Moment and Maximum Entropy Method
WANG Cheng, WANG Tao, HUANG Xing, LIU Xiangyun, LI Zhengliang, LIU Chang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230105
Abstract:

To accurately assess the overall safety of transmission towers with asymmetrical legs, a refined numerical model for a transmission tower with asymmetrical legs was established based on a 500 kV transmission line project. Based on the Technical Specification for the Design of Steel Supporting Struct...

Coupling Optimization and Regulation of Roadbed and Environment in Mountainous Railways
BAO Xueying, SHEN Duhua, LI Yajuan, HE Zhenxia, ZHANG Chenghao, CHEN Huixin
, Available online  , doi: 10.3969/j.issn.0258-2724.20230340
Abstract:

To achieve high-quality coordinated development of roadbed and environment in mountainous railways, a coupling optimization and regulation method of roadbed and environment was proposed. Firstly, the compatibility and symbiosis between the railway roadbed and the environment were defined, and a gree...

Heat–Mass Transfer and Salt-Frost Heave Mechanism of Saline Soil under Freeze–Thaw Cycle
YU Yunyan, LUO Chongliang, CUI Wenhao, DU Qianzhong, GAO Yuan, ZHANG Tinghua
, Available online  , doi: 10.3969/j.issn.0258-2724.20230299
Abstract:

To study the heat–mass transfer patterns and structural damage mechanisms of sulfate saline soil under freeze–thaw cycles, a freeze–thaw cycle test was carried out under non-pressurized supply condition with saline soil from Hexi Corridor as the research object. The pore structure damage mechanism o...

Lithium-Ion Battery Failure Identification Based on Segmented Penalty Parameter Support Vector Machine Algorithm
JIN Hui, HU Yinxiao, GE Hongjuan, LIU Weiwei, LI Binghao, LI Wenchen, SANG Yiqin
, Available online  , doi: 10.3969/j.issn.0258-2724.20230287
Abstract:

In the application scenarios of unbalanced samples such as airborne lithium-ion battery failure identification, the support vector machine (SVM) algorithm has the problem of hyperplane offset separation. To address this issue, the segmented penalty parameter support vector machine (SPP-SVM) algorith...

Distributed Management Method for Geographic and Geological Knowledge Base for Railway Digital Twin
ZHU Qing, ZHAO Yuanzhen, GUO Yongxin, DING Yulin, WANG Qiang, PAN Yan, CHEN Junhua, ZHANG Liguo
, Available online  , doi: 10.3969/j.issn.0258-2724.20230389
Abstract:

Efficient geographic and geological knowledge services for railway engineering form a crucial foundation for supporting the multi-scale and multi-disciplinary intelligent applications of digital twin technology in railways. To improve the completeness of query results and enhance the capability for ...

Voiceprint Recognition of 750 kV Transformer and Pin-Plate Discharge Aliasing Signals Based on Sparse Representation Theory and Convolutional Neural Network
BAO Yanyan, YANG Guangze, CHEN Wei, FENG Tingna
, Available online  , doi: 10.3969/j.issn.0258-2724.20230177
Abstract:

Transformer insulation level and health state are crucial to the safety and stability of the power grid. In order to study the practical engineering problem that the audible acoustic signals collected outside the box may be mixed with other interference signals, such as corona sound and bird song wh...

Prediction Model for Water Film Thickness of Drainage Asphalt Pavement under Ultimate Rainfall Intensity
WANG Min, HE Zhaoyi, ZHOU Wen, SONG Gang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230159
Abstract:

In order to study the variation law of water film thickness of multi-lane drainage asphalt pavement under ultimate rainfall intensity, a full-scale experimental section of multi-lane drainage asphalt pavement was constructed in the laboratory based on the seepage characteristics of drainage asphalt ...

Intelligent Extraction Method of Railway Station Overhead Catenary Wire Features from Point Cloud Guided by Knowledge
ZHU Jun, ZHANG Chuanjun, ZHAO Jianfeng, WANG Xuezhu, FU Lin, HUANG Zhiyong, GUO Pengfei
, Available online  , doi: 10.3969/j.issn.0258-2724.20230435
Abstract:

To address the irregular noise distribution and the high difficulty of semantic segmentation in railway yard catenary point clouds, and to enhance the detection of catenary anomalies. First, the railway yard catenary scene data is analyzed, and a knowledge framework is constructed for extracting cat...

Rapid Assessment of Landslides Induced by Jishishan Ms6.2 Earthquake in Gansu Province
ZENG Ying, ZHANG Yingbin, CHU Feng, LIU Jing, FENG Zhenhai, SU Jinrong
, Available online  , doi: 10.3969/j.issn.0258-2724.20240041
Abstract:

Rapidly obtaining co-seismic landslide distribution and conducting disaster assessments after earthquakes are vital for effective emergency relief and reconstruction. Therefore, in this study, the InSAR data-Newmark physical fusion driver model (IDNPM) was used to rapidly assess the landslides trigg...

5G Antenna Parameter Planning for Intelligent Marshalling Station Based on Machine Learning Algorithm
CHEN Jianyi, YAN Lianshan, GUO Xinghai, ZHONG Zhangdui
, Available online  , doi: 10.3969/j.issn.0258-2724.20220329
Abstract:

The 5th generation mobile communication technology (5G) has advantages such as a high connection rate and large system capacity, which can support the development of marshalling station communication systems. However, the 5G antenna parameter planning is challenging due to the large amount of calcul...

Finite Element Model Updating for Bridges Based on Adaptive Nested Sampling and Bayesian Theory
XU Xikun, HONG Yu, XU Jingye, ZHOU Zhida, PU Qianhui, WEN Xuguang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230358
Abstract:

In bridge health monitoring based on finite element models, Bayesian model updating techniques are commonly used to quantify the uncertainties of important parameters in the finite element models, so as to address the issue of non-uniqueness in model updating caused by measurement errors, modeling e...

Non-Singular Fast Terminal Sliding Mode Rotor Position Control of Active Magnetic Bearings
GONG Lei, HE Pai, SHI Yong, ZHU Changsheng
, Available online  , doi: 10.3969/j.issn.0258-2724.20240090
Abstract:

In order to solve problems of slow system response speed and poor anti-interference ability in the position control of the rotor of active magnetic bearings (AMBs), a position control method combining the non-singular fast terminal sliding function with the improved super-twisting reaching law was p...

Steel Caisson Lowering Process for Cross-Sea Bridges Under Complex Marine Conditions and Influence Optimization
CHEN Mingling, HUANG Bo, XUE Zechen, Zhou Jianting
, Available online  , doi: 10.3969/j.issn.0258-2724.20230712
Abstract:

The positioning and lowering construction of large prefabricated steel caissons for cross-sea bridges is facing significant threats from the complex marine environment, including extreme waves and currents. In-depth research on the dynamic characteristics of the steel caisson during the positioning ...

Site Effects of Linear Method and Modified Horizontal-to-Vertical Spectral Ratio
CHEN XueLiang, CHEN Kelin, LAN Jingyan, LI Xingzhe
, Available online  , doi: 10.3969/j.issn.0258-2724.20230094
Abstract:

In order to further study the influence of site effects from engineering ground motion, a comparative analysis of site effects from ground motion in the Sichuan strong earthquake area was carried out based on two empirical methods, namely, horizontal-to-vertical spectral ratio (HVSR) and linear inve...

Influence of Temperature-Varying Characteristics on Operating Performance of Alpine Electric Multiple Units
QI Yayun, LI Long, SHI Huailong, SONG Ye, DAI Huanyun
, Available online  , doi: 10.3969/j.issn.0258-2724.20220876
Abstract:

The service environment of alpine electric multiple units (EMUs) is affected by temperature for a long time, and the vehicle suspension element parameters and under-rail parameters have strong seasonal variation characteristics. To investigate the influence of temperature-varying characteristics of ...

Ride Comfort Analysis of Suspension System of Mining Dump Truck Based on AMESim
LIU Qihang, FENG Handui, LIU Shen, LI Beibei, LIU Xiumei
, Available online  , doi: 10.3969/j.issn.0258-2724.20230135
Abstract:

Mining dump trucks are mainly used for small-scale mine transportation, often run on poor roads or with serious overloading and other conditions. Hydro-pneumatic suspension is widely used in large construction vehicles due to its nonlinear characteristics of stiffness and damping, which can better a...

Application of Good Lattice Point with Power Generator Method in Stochastic Dynamic Analysis of Vehicle-Bridge System
ZHOU Ziji, ZHANG Nan, YAN Guobin
, Available online  , doi: 10.3969/j.issn.0258-2724.20220831
Abstract:

Since it is difficult to accurately select representative super-high-dimensional random phase angles, the good lattice point with power generator method (GLPPGM) was utilized to generate samples of representative track irregularities, which were applied to the vehicle-bridge system to obtain the mea...

Nonlinear Buckling Analysis of Suspended Domes Considering Initial Curvature of Members
JIANG Zhengrong, QIU Junming, SHI Kairong, SU Changwang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230234
Abstract:

In order to reveal the influence laws of the initial curvature of members on the stability bearing capacity of suspended domes, a nonlinear buckling analysis of suspended domes was carried out by applying the multi-beam method to simulate the initial curvature of members and the random imperfection ...

Freeze-Thaw Damage Characteristics of Anhydrite Rock Pore Structures Based on Nuclear Magnetic Resonance Technology
HOU Chao, JIN Xiaoguang, HE Jie, FANG Zhiyuan
, Available online  , doi: 10.3969/j.issn.0258-2724.20230314
Abstract:

In order to study the damage characteristics of meso and micro pore structures of gypsum rock subjected to freeze-thaw cycles in cold regions, anhydrite rock was taken as the research object, and the porosity, pore size, and pore throat distribution characteristics of anhydrite rock were obtained ba...

Location Information Perception of Onsite Construction Crew Based on Person Re-identification
YANG bin, HU Jinming, ZHANG Qilin, WANG Congjun
, Available online  , doi: 10.3969/j.issn.0258-2724.20230125
Abstract:

To obtain location information of onsite construction crew continuously with the consideration of dynamical changing, occluding, and high appearance similarity in construction scenes, a computer vision-based location information perception method for onsite construction crew was proposed. Firstly, a...

Rail Grinding Model Based on Mechanical-Electric-Hydraulic Coupling
ZENG Luqing, CUI Dabin, LI Li
, Available online  , doi: 10.3969/j.issn.0258-2724.20220577
Abstract:

Rail grinding occurs when the rail grinder is in traveling status, which is affected by the dynamic performance of the vehicle. Rail grinding is generally set as constant power grinding, involving a wheel-track contact relationship, wheel-track grinding relationship, hydraulic system, and control sy...

Susceptibility Assessment of Collapses and Landslides Based on Cluster and Random Forest Coupled Model
DU Yingjin, XI Chuanjie, HU Xiewen, WU Jianli, LIU Bo, HE Kun
, Available online  , doi: 10.3969/j.issn.0258-2724.20220864
Abstract:

Hazard susceptibility assessment is generally a probabilistic modeling based on the spatial distribution characteristics of hazards, but the hazards have spatial heterogeneity. In order to solve the spatial heterogeneity of hazards, the collapses and landslides along the Wenchuan-Lixian section in t...

Frictional Self-Excited Vibration of a Metro Pantograph-Catenary System
FENG Xiaohang, CHEN Guangxiong, MEI Guiming, DONG Bingjie, ZHAO Pengpeng, LI Xianhang
, Available online  , doi: 10.3969/j.issn.0258-2724.20220873
Abstract:

In order to study the influence of frictional self-excited vibration of a pantograph-catenary system on the contact loss between the carbon strip and contact wire, a finite element model of the pantograph-catenary system at the rigid and flexible transition section of a metro was established based o...

Impact of Horizontal Ribs on Aerodynamic Characteristics of High-Rise Buildings
JIANG Yuan, LIU Jinyang, HUI Yi, LIU Rui
, Available online  , doi: 10.3969/j.issn.0258-2724.20230584
Abstract:

To analyze the wind-resistance working mechanism of stretched ribs mounted on high-rise buildings, the impact of horizontal ribs on the flow field and wind load of high-rise buildings under atmospheric boundary layer flow was evaluated by using the large eddy simulation (LES), and the wind-resistanc...

Characteristics of Seepage Field and Structural Safety Analysis of Small Interval Tunnels with Asymmetric Seepage Boundaries
YU Bingxin, CHEN Ziquan, HE Chuan, LI Zheng, CAI Penglin, ZHANG Hang
, Available online  , doi: 10.3969/j.issn.0258-2724.20230408
Abstract:

To study the characteristics of the seepage-stress field and the safety of the lining structure of small interval tunnels under asymmetric seepage boundary conditions, based on the Liantang Tunnel in Shenzhen, China, a seepage model experiment for the small interval tunnels was developed. In additio...

Seismic Failure Analysis of High-Pier Aqueduct Water-Stop Based on Fluid-Solid Coupling
DENG Kailai, ZHANG Yexin, LI Zhiyuan, HAO Minghui, LIAO Wenbin
, Available online  , doi: 10.3969/j.issn.0258-2724.20230640
Abstract:

To explore the water-stop performance of a large-scale high-pier aqueduct under earthquakes, a finite element model of the aqueduct was established based on the fluid-solid coupling method, and the nonlinear coupling behavior of the aqueduct and water under dynamic effects was simulated. By introduc...

Bearing Characteristics of X-Shaped Sleeper Based on Scaled Test and Discrete Element Simulation
CHEN Cheng, TANG Yuyan, TANG Zian, ZHANG Lei, YANG Chao
, Available online  , doi: 10.3969/j.issn.0258-2724.20230590
Abstract:

To investigate the trackbed bearing capacity and lateral resistance characteristics of a new X-shaped sleeper, scaled tests comparing the stiffness and lateral resistance between X-shaped and Type Ⅲ sleepers were conducted. A 3D model of a ballast track was established by the discrete element method...

Influence of Braking Conditions on Residual Stress and Warping Deformation of Brake Discs of High-Speed Trains
LI Zhiqiang, ZHENG Yinan, ZHANG Xiaokang, LI Jie, YANG Zhiyong
, Available online  , doi: 10.3969/j.issn.0258-2724.20230691
Abstract:

The brake disc of electric multiple units (EMUs) will form complex residual stress during long-term service, which will lead to irreversible warping deformation after disassembly. In order to investigate the influence of residual stress and warping deformation on the feasibility of subsequent mainte...

Vibration Fatigue Fracture Mechanism of e-Type Clip Under Rail Corrugation Excitation
DONG Bingjie, CHEN Guangxiong, FENG Xiaohang, REN Wenjuan, SONG Qifeng, MEI Guiming
, Available online  , doi: 10.3969/j.issn.0258-2724.20230707
Abstract:

To study the reason for the abnormal fracture of e-type clips on small-radius curved subway tracks, the development of rail corrugation on Line X of the Chengdu Metro over an extended period was monitored and measured. Based on the theory of friction-induced self-excited vibration, a comprehensive s...

Optimization of Automobile Firewall Acoustic Package for Multi-level Goals
HUANG Haibo, ZHENG Zhiwei, ZHANG Siwen, WU Yudong, YANG Mingliang, DING Weiping
, Available online  , doi: 10.3969/j.issn.0258-2724.20211086
Abstract:

To study the influence of automotive acoustic package design parameters on its multi-performance objectives, firstly, the traditional DBNs (deep belief networks) method was modified, and the SVR-DBNs (support vector regression-deep belief networks) model was proposed to improve the accuracy of model...

Anti-Disturbance Performance of Maglev Rotor Using Model Assisted Extended State Observer
JIN Chaowu, CAO Yingqing, ZHOU Jin, YE Zhoucheng, XIN Yu
, Available online  , doi: 10.3969/j.issn.0258-2724.20220803
Abstract:

With the increase in sinusoidal disturbance frequency, the performance of extended state observers (ESOs) will decrease. In order to improve the disturbance suppression ability of the ESO in the maglev rotor system, firstly, the mathematical model of a one-degree-of-freedom (1-DOF) maglev bearing ro...

, Available online  
Abstract:
Analysis of Limit Support Pressure Due to Shield Tunnelling with a Shallow Overburden Under Seepage
CAO Liqiang, ZHANG Dingli, LI Xinyu, LI Ao, SUN Zhengyu
, Available online  
Abstract:
Based on the semi-contained water model, the permeability of shield-crossing soil and overburden layers when the shield passed through the permeable soil was comprehensively analysed. The analytical solution of the head distribution along the tunnelling direction in the shield-crossing soil layer wa...