• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database

2021 Vol. 56, No. 1

Display Method:
Finite Element Model Updating of Box Girder Bridges with Corrugated Steel Webs
JI Wei, SHAO Tianyan
2021, 56(1): 1-11. doi: 10.3969/j.issn.0258-2724.20191198
Abstract:
In order to reduce the error between the finite element values and measured values of the box girder bridge with corrugated steel webs, a bridge finite element model updating method using response surface method and Fmincon algorithm was presented, taking a box girder bridge with corrugated steel we...
Study of Extreme Wave Forces on T-and Box-Types Girder
YANG Zhiying, HUANG Bo, DUAN Lunliang, ZHANG Jiawei, ZHU Bing
2021, 56(1): 12-19. doi: 10.3969/j.issn.0258-2724.20181069
Abstract:
The extreme wave forces on costal bridges with T-type girder and box-type girder have great differences due to their special geometrical shapes. First, numerical models based on solitary wave theory and cnoidal wave theory were developed to simulate the tsunami waves and hurricane waves, in which th...
Shaking Table Tests on Seismic Response of Tunnel with Longitudinal Cracking Lining
LI Bingtian, QIU Wenge, QI Xingxin, DENG Zhiheng, HU Hui
2021, 56(1): 20-27, 55. doi: 10.3969/j.issn.0258-2724.20190657
Abstract:
In order to study the influence of longitudinal cracks in the lining of double track tunnel of high speed railway on the seismic safety of the structure, a large-scale shaking table model test was carried out on class IV surrounding rock in accordance with the Code for design of railway tunnel (TB 1...
Comparative Analysis of Shear Strength Models in Plastic Hinge Region for Concrete Hollow Piers
SHAO Changjiang, QI Qiming, WEI Wang, HU Chenxu
2021, 56(1): 28-36. doi: 10.3969/j.issn.0258-2724.20190196
Abstract:
Accurate evaluation of shear strength in plastic hinge region is of great significance for seismic design of long-span bridges with tall piers. However, the shear design models for hollow piers are not directly listed in the current codes in China and abroad. The applicability of both the existing f...
Out-of-Plane Stability Analysis Method for Circular Arch Structures
DING Min, WANG Jiajia, JIANG Xiugen, CAO Qiongqiong, WANG Hongzhi
2021, 56(1): 37-46. doi: 10.3969/j.issn.0258-2724.20191158
Abstract:
In order to analyze the out-of-plane stability behavior of circular arch structures, according to the deformation correlation of circular arch with circular curved beam, the equilibrium equations of circular curved beam were firstly established by taking secondary moment effect into account. Combine...
Evolution Characteristics of Indoor Pollutant Concentration in Buoyancy-Driven Natural Ventilation
ZHUANG Jiawei, DIAO Yongfa, ZHANG Li’an, SHEN Henggen
2021, 56(1): 47-55. doi: 10.3969/j.issn.0258-2724.20190582
Abstract:
Evolution of pollutant concentration at different heights was analyzed to explore the evolution rule of indoor gaseous pollutants during a period from buoyacy-driven natural ventilation to steady state. Firstly, according to the non-uniform three-layer model used to examine the transient flows drive...
Optimization and Tensile Properties of Composite Insulator at High and Low Temperature
YAN Zhitao, MA Wenjun, ZHANG Pu, QIU Zhe
2021, 56(1): 56-61, 83. doi: 10.3969/j.issn.0258-2724.20181032
Abstract:
In order to find out the influence of high and low temperature and the crimping process between the core rod and the end fittings on the bearing capacity of composite insulator, and to get the final optimized crimping mode, the finite element simulation analysis was carried out on the high and low t...
Generation Mechanism of Railway Disc Brake Squeal and Its Suppression Method
QIAO Qingfeng, YANG Weidong, ZHU Qi, CHEN Guangxiong
2021, 56(1): 62-67. doi: 10.3969/j.issn.0258-2724.20190799
Abstract:
In order to study the generation mechanism of railway disc brake squeal and its influencing factors, the disc brake squeal of a railway brake unit for several different brake conditions in a field test was measured, and the generation mechanism of railway disc brake squeal was obtained. Based on the...
Research on Multi-Parameter Fitting of Fastener Structures to Suppress Wheel-Rail Friction Self-Excited Vibration
CUI Xiaolu, HUANG Bo, CHEN Guangxiong
2021, 56(1): 68-74. doi: 10.3969/j.issn.0258-2724.20190023
Abstract:
To study the effect of fastener structure parameters on wheel-rail frictional self-excited oscillation, based on the viewpoint of frictional self-excited vibration of the wheel-rail, a finite element model of the wheelset-track system on a small-radius curve track supporting by the monolithic roadbe...
Experimentation on Vibration Transmission Characteristics of Modern Tram Tracks
ZHANG Xun, LI Xi, HAO Chenxi, YOU Yingchuan, CHEN Weijie, PU Yu, XU Yujin
2021, 56(1): 75-83. doi: 10.3969/j.issn.0258-2724.20200013
Abstract:
In order to explore vibration transmission characteristics of different tracks in modern tram traffic (MTR), the MTR in a city was selected as the case, three different tracks were measured, i.e., ordinary track without vibration absorption elements, ordinary track with elastic cladding materials, a...
Effect of Hollow Worn Tread of Electric Multiple Units on Vehicle Stability
WANG Chen, LUO Shihui, WU Pingbo, XU Ziqiang, MA Weihua, FANG Wengwu
2021, 56(1): 84-91. doi: 10.3969/j.issn.0258-2724.20181001
Abstract:
To solve the issue of frame lateral instability alarm of high-speed EMU (electric multiple units) in the running process, a vehicle dynamics model considering hollow worn tread was established. The wheel-rail relationship between worn treads of different running distance and rail as well as the infl...
Wheel Tread Wear Characteristics of High-Speed Electric Multi-Units
XU Kai, LI Fu, AN Qi, MAO Wenhui
2021, 56(1): 92-100. doi: 10.3969/j.issn.0258-2724.20190266
Abstract:
In order to study the wheel tread wear characteristics of different types of high-speed electric multi-units (EMU) vehicles, and to explore vehicle performance evolution in the period of wheel wear, the CRH380A and CRH380B EMU running on Wuhan–Guangzhou passenger dedicated line are targeted. Based o...
Mechanical Performance and Microstructure of Single Component Geopolymer Mortar
YANG Shiyu, ZHAO Renda, JIN Hesong, LI Fuhai, QIAO Yu
2021, 56(1): 101-107, 137. doi: 10.3969/j.issn.0258-2724.20190588
Abstract:
In order to investigate the strength development rule and microscopic mechanism of fly ash based geopolymer mortar with different NaOH concentrations, cement-sand ratios and solution-cement ratios at various curing temperatures, the mechanical properties test were carried out. The microscopic morpho...
Low Temperature Rheological Performance Analysis of Rubber Modified Asphalt under Heat Aging Process
YU Jiang, ZHAO Qun, YE Fen, SONG Qingqing
2021, 56(1): 108-115. doi: 10.3969/j.issn.0258-2724.20180987
Abstract:
In order to explore the low temperature rheological properties of rubber modified asphalt (namely the activated twin-screw extruded rubber (AER) powder modified asphalt) and AER/SBS (styrene-butadiene styrene) composite modified asphalt under aging. The low temperature rheological properties of AER ...
Feature Line Extraction from 3D Model of Oblique Photogrammetry Based on Multi-Objective Weighted Shortest Path
ZHU Qing, SHANG Qisen, HU Han, YU Haojia, ZHONG Ruofei, DING Yulin
2021, 56(1): 116-122. doi: 10.3969/j.issn.0258-2724.20180248
Abstract:
Oblique photogrammetry 3D models suffer from coarse structure, high noise and regularity deficiency in corner or ridge regions, which make it difficult to extract feature lines quickly and accurately from these regions. To deal with this problem, a method of feature line extraction from 3D model of ...
Optimal Evacuation Model of Parking Vehicles in Dynamic Traffic Flows
GAN Jiahua, MAO Xinhua, ZHAO Jing
2021, 56(1): 123-130. doi: 10.3969/j.issn.0258-2724.20190611
Abstract:
In order to develop an effective evacuation plan for vehicles in a parking lot and achieve the shortest evacuation time, an optimal evacuation model was built by considering the dynamic traffic flow characteristics of a road network. Firstly, according to queuing theory, the vehicle queue on each ex...
Inclusion of Latent Class in Behavior Model of Motorized Travel in City
LIU Zhiwei, LIU Jianrong, DENG Wei
2021, 56(1): 131-137. doi: 10.3969/j.issn.0258-2724.20190945
Abstract:
To study the preference heterogeneity of travel choice and the influence of psychological factors on travel behavior, the psychological latent variables that influence the travel mode choice are obtained through confirmatory factor analysis. Then, these variables are introduced into latent-class con...
Sensitivity Analysis for Transit Network with Distance Effect
DU Muqing, YU Chunbin
2021, 56(1): 138-146. doi: 10.3969/j.issn.0258-2724.20190453
Abstract:
In order to accurately analyze the performance of transit network, the amplification effect of distance on the travelers’ perceived travel cost is considered, and a generalized travel cost function is proposed in the sensitivity analysis of transit network. Firstly, as to the influence of distance e...
Text-Mining Based Risk Source Identification Model for Transportation Safety
LUO Wenhui, CAI Fengtian, WU Chuna, XIA Hongwen, MENG Xingkai
2021, 56(1): 147-152. doi: 10.3969/j.issn.0258-2724.20200140
Abstract:
In order to solve data deficiency and excessive staff workload in the risk-source identification of road transportation safety, an automatic identification model is proposed from the angle of text mining. Firstly, the model performs feature enhancement preprocessing operation through the causality s...
Automatic Traffic State Recognition from Road Videos Based on 3D Convolution Neural Network
PENG Bo, TANG Ju, ZHANG Yuanyuan, CAI Xiaoyu, MENG Fanhe
2021, 56(1): 153-159. doi: 10.3969/j.issn.0258-2724.20191169
Abstract:
In order to directlyextract effective traffic information from videos, a traffic state recognition method based on 3D CNN (3D convolutional neural networks)was put forward. Firstly, with the deep convolutional network C3D (convolutional 3D) as 3D CNN prototype, the number and position of convolution...
Design of Airborne Video Dehazing System for UCAV Based on HSV Transmission Weighted Correction
WANG Jian, QIN Chunxia, YANG Ke, REN Ping, ZHENG Jie, ZHAO Yuanpeng, CHEN Guifeng
2021, 56(1): 160-167, 205. doi: 10.3969/j.issn.0258-2724.20190985
Abstract:
As there is image degradation when the UCAV (unmanned combat air vehicle) captures the real-time image in the haze day, a low power-consumption system is designed on the basis of the HSV (hue, saturation, value) transmission weighted correction. First, the overall design of the dehazing system is co...
Segmentation of Small-Field-of-Viewstar Images Based on Kittler Minimum Error Algorithm
SHI Chunlin, YANG Peizhang, ZHANG Chao, DU Lan, YE Kai, FAN Chengxiao, LI Jian, ZU Anran
2021, 56(1): 168-175. doi: 10.3969/j.issn.0258-2724.20190841
Abstract:
Compared with conventional images, small-field-of-view star images are more susceptible to the impacts of uneven illumination and measurement noises. Meanwhile, the traditional threshold segmentation algorithm has poor processing effect or efficiency. In terms of the Gaussian distribution of star im...
Multi-Discipline Forward Collaborative Design Technology Based on BIM Interaction and Data-Driven
SHI Haiou, YUAN Quan, ZHANG Yunlin, ZENG Wenqu, ZHENG Qing, DING Guofu
2021, 56(1): 176-181. doi: 10.3969/j.issn.0258-2724.20200035
Abstract:
In order to realize data-driven collaborative design among multiple disciplines and improve design efficiency, with the analysis of the forward collaborative design model of urban rail transits, the data-driven forward collaborative design technology is proposed for multiple disciplines. Firstly, th...
Peak-Current and Peak-Voltage Control Scheme for Single-Inductor Dual-Output Buck Converter
XU Limei, WANG Yao, ZHANG Liuyang, YANG Jiayong
2021, 56(1): 182-189. doi: 10.3969/j.issn.0258-2724.20191067
Abstract:
In order to reduce the output cross regulation of single-inductor dual-output (SIDO) buck converter in continuous conduction mode (CCM), a peak-current and peak-voltage (PCPV) control method is proposed. The circuit structure and operating principle of the PCPV-controlled SIDO buck converter are ana...
Fault Diagnosis for Track Circuit Based on Interval Type-2 Neural-Fuzzy System
WANG Zicheng, ZHANG Yadong, GUO Jin, SU Lina, YANG Jing, SONG Ci, LI Kehong
2021, 56(1): 190-196. doi: 10.3969/j.issn.0258-2724.20180983
Abstract:
At present, the threshold method, despite its low efficiency, has still been used to identify the fault of track circuit on site. To handle this, an interval type-2 neural-fuzzy system (IT2NFS) was built by combining neural networks and fuzzy logic. Intelligent identification of failure modes was re...
Power Following Control Strategy of SOC Dynamic Adjustment for Small Fuel-Cell Cars
CHEN Weirong, LI Jincheng, LI Qi
2021, 56(1): 197-205. doi: 10.3969/j.issn.0258-2724.20190552
Abstract:
An SOC (state of charge)-based energy management method is proposed to dynamically adjust the power following coefficient for the small-vehicle hybrid system that consists of an air-cooled proton exchange membrane fuel cell and a lithium battery. Moreover, a hybrid sightseeing car prototype is devel...
Mechanism of High-Speed Railway Interference on Power Cables of Adjacent Normal-Speed Railway
XIE Shaofeng, SUN Jingdi, LUO Bingxiang, SU Peng, LI Jingwen
2021, 56(1): 206-213. doi: 10.3969/j.issn.0258-2724.20191003
Abstract:
Due to high speed, large traction power and continuously receiving current in operation, high-speed railways generate obvious electromagnetic interference on the power cables of adjacent normal-speed railways. Based on the analysis of inductive coupling and resistive coupling mechanism, the interfer...
Heat Dissipation Characteristics Analysis of Surface Air-Oil Heat Exchanger Applied in Aircraft Engine
CAI Huikun, SU Lijun, LIAO Yidai, WENG Zeju, XU Chen
2021, 56(1): 214-220. doi: 10.3969/j.issn.0258-2724.20180964
Abstract:
In order to enhance aircraft engine heat transfer performance in the conditions of ground idle speed or low flying speed, a surface air-oil exchanger was presented using air inlet passage as its dissipation area. Its heat dissipation characteristics, as well as districted simulation equivalence, wer...