西南交通大学学报

Analysis of Effect of Cross Adit on Train-Tunnel Aerodynamic Multiple Peak Characteristics

WANG Yingxue, REN Wenqiang, LUO Yang, HE Jun

2018, 53(3): 427-433. doi: 10.3969/j.issn.0258-2724.2018.03.001

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For research the effect of setting cross adit to compression wave transmission characteristic, A cross adit near the tunnel entrance relieves the peak of a micro-compression wave; additionally, it also affects the transmission characteristics of the compression wave. In this study, on the basis of t...

Prediction of Rock Bursts for Sangzhuling Tunnel Located on Lhasa-Nyingchi Railway Under Coupled Thermo-Mechanical Effects

YAN Jian, HE Chuan, WANG Bo, MENG Wei, YANG Junfeng

2018, 53(3): 434-441. doi: 10.3969/j.issn.0258-2724.2018.03.002

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Coupled thermo-mechanical effects on the prediction of rock bursts for tunnels with special geostress and high geotemperatures is a new problem that needs to be solved. During the excavation of the newly built Sangzhuling tunnel in the Lhasa-Nyingchi railway project, the geotemperature at different ...

Refined Simulation Analysis of Water Pressure of Tunnel Lining Based on Temperature Analogy Method

QIU Yue, HE Chuan, HE Cong, ZOU Yulin, HU Wei

2018, 53(3): 442-449. doi: 10.3969/j.issn.0258-2724.2018.03.003

[Abstract](517)

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In this study, the distribution of a lining's water pressure is calculated under different construction states including excavation, lining construction, and grouting to verify the accuracy and feasibility of the temperature analogy method in water pressure calculations. The results were compared wi...

Vibration Reduction Effect of Stepped V-Cut Blasting

ZOU Xinkuan, ZHANG Jichun, PAN Qiang, WANG Wei

2018, 53(3): 450-458. doi: 10.3969/j.issn.0258-2724.2018.03.004

[Abstract](594)

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The aim of this research is to study the vibration reduction effect of stepped V-cut blasting (SV-cut) in tunnel blasting. Firstly, the method for determining SV-cut blasting parameters are provided based on the rock millisecond blasting theory. Secondly, numerical computation models for both tradit...

Spatial Distribution Characteristics of Rail Vibration Acceleration under Train Load

CAI Xiaopei, TAN Xi, GUO Liangwu, ZHONG Yanglong

2018, 53(3): 459-466. doi: 10.3969/j.issn.0258-2724.2018.03.005

[Abstract](633)

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A vehicle-track dynamic model and track-substructure finite element model were established to study the basic parameters and sensitive areas of rail vibration, respectively, when a train passes. The models were developed based on the co-simulation of MBS software GENSYS and finite element software A...

Collaborative Analysis of Dispatch Systems between High-Speed and Conventional Rail

ZHUANG He, LI Wenxin, YIN Yong, ZHANG Yongxiang, WEN Chao

2018, 53(3): 467-473. doi: 10.3969/j.issn.0258-2724.2018.03.006

[Abstract](609)

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To ensure the efficiency and safety of trains in the railway network, an evaluation index system and a method for the collaborative analysis of dispatch systems between high-speed and conventional rail based on planned and actual railway timetable data is proposed. First, the daily coordination rela...

Design of Inductively Coupled Power Transfer System Based on Dual-Loop Control

GONG Ming, LI Qiang

2018, 53(3): 474-482. doi: 10.3969/j.issn.0258-2724.2018.03.007

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To solve the problem of constant voltage output due to frequent load fluctuations in rail transit power supply systems, a dual-loop control strategy based on sliding mode control and PI control is proposed. First, the authors established a model for the system with a discrete time dynamic model for ...

Effect of Ground Motion Spatial Variations on Pounding Response of High-Pier Railway Bridge

KANG Rui, ZHENG Kaifeng, LI Xi, JIA Hongyu, ZHENG Shixiong

2018, 53(3): 483-491, 499. doi: 10.3969/j.issn.0258-2724.2018.03.008

[Abstract](521)

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The authors present a theoretical analysis for a typical HPRB under synchronous and asynchronous excitations, using nonlinear dynamic analysis based on OpenSees, to investigate the effect of ground motion spatial variations (GMSVs) on the pounding response of high-pier railway bridges (HPRBs). The H...

Stochastic Analysis of Effective Moment of Inertia of Cracked In-Service Reinforced Concrete Beams

YANG Cheng, CHEN Wenlong, ZHAO Renda, XU Tengfei

2018, 53(3): 492-499. doi: 10.3969/j.issn.0258-2724.2018.03.009

[Abstract](576)

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For cracked reinforced concrete structures in working service life, calculation of the stiffness of the cracked reinforced concrete beam is important for the serviceability design of reinforced concrete structures. However, owing to the uncertainty and nonlinearity of concrete, it is difficult to pr...

Experiment Research on Seismic Behavior of Steel Reinforced Concrete Shear Walls of Concealed Bracings

WANG Yuzhuo, HUANG Ying, WANG Huimin, FU Chuanguo

2018, 53(3): 500-507. doi: 10.3969/j.issn.0258-2724.2018.03.010

[Abstract](553)

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Three steel reinforced concrete shear walls with concealed bracings and one common concrete shear wall were tested under a low cyclic reversed load condition to investigate the seismic behaviour and the effect of having a different number of concealed bracings. The failure characteristics of steel r...

Investigation into Effects of Turbulence Integral Length on Wind Loads Acting on Tall Buildings Using Large Eddy Simulation

ZHU Zhiwen, DENG Yanhua

2018, 53(3): 508-516. doi: 10.3969/j.issn.0258-2724.2018.03.011

[Abstract](589)

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To investigate the influence of turbulence integral length on the wind pressure value and distribution on the surface of tall buildings and determine the reasonable value of turbulence integral lengths, a large eddy simulation (LES) was conducted under different turbulence integral lengths to repres...

Consistency between Calculated and Tested Values of Critical Flutter Speed of Flat Box Girder

WU Bo, WANG Qi, LI Zhiguo, LIAO Haili

2018, 53(3): 517-524. doi: 10.3969/j.issn.0258-2724.2018.03.012

[Abstract](666)

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To obtain the precise flutter performance of a flat box girder, concordances between calculated values and tested values of critical flutter speed were studied, using sectional model wind tunnel testing combined with the calculation method of critical flutter speed. The flutter derivatives under dif...

Study of Three-Dimensional Wave Forces on Lowering of Steel-Suspending Cofferdam

HUANG Bo, DUAN Lunliang, ZHU Bing

2018, 53(3): 525-532. doi: 10.3969/j.issn.0258-2724.2018.03.013

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In order to understand the interaction between dumbbell shaped steel boxed cofferdam and wave during the construction of the bridge across the sea. The interaction between a steel-suspending cofferdam and wavesis studied, to investigate the influence of waves on the construction progress of the larg...

Numerical Study of Flow Characteristics Around Square Cylinder at High Reynolds Number

ZHOU Qiang, LIAO Haili, CAO Shuyang

2018, 53(3): 533-539. doi: 10.3969/j.issn.0258-2724.2018.03.014

[Abstract](747)

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Three-dimensional large eddy simulations (LES) were performed at high Reynolds numbers (Re=22 000) and using the dynamic Smagorinsky sub-grid model to investigate uniform flow over a square cylinder. Meshing of the model was performed using Open Foam-an open-source computational tool. Mean integral ...

Study on Isolated Reinforcement Scheme of Ancient Masonry Pagoda in Sichuan Province

PAN Yi, WANG Zichao, SHANG Feng, GE Qingzi, YUAN Shuang

2018, 53(3): 540-547. doi: 10.3969/j.issn.0258-2724.2018.03.015

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In order to more effectively protect masonry pagodas and retain their original historical style and features, Pengzhou Zhenguo White Pagoda was examined as a representative case. The isolation performance of the pagoda was analysed using different isolation schemes as parameters. The vertex maximum ...

Simulation and Macro-Mesoscopic Parameter Analysis for Direct Shear of Filled Rough Joints

XU Wanzhong, LIN Hang, CAO Rihong

2018, 53(3): 548-557. doi: 10.3969/j.issn.0258-2724.2018.03.016

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A joint model based on particle flow was built successfully and the mechanical properties of the fill joint were investigated in this study. The morphology of damage and the crack evolution mechanism of roughness of the jointed model were also analysed from the viewpoint of meso-mechanics. At the sa...

Improvement in Definition of Joint Parameters in Discontinuous Deformation Analysis

WANG Jinmei, ZHANG Yingbin, ZHAO John X., YU Pengcheng, WANG Pan

2018, 53(3): 558-564, 573. doi: 10.3969/j.issn.0258-2724.2018.03.017

[Abstract](479)

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To improve the accuracy of value assignment for the joint parameters in the discontinuous deformation analysis (DDA) program, an improved method for definition of the joint parameters was proposed based on the definition of the joint parameters in the DDA original program. First, according to the ph...

Preliminary Study of Assessment System for Subsurface Karst Development Degree

ZHANG Kai, HUO Xiaolong, CHEN Shougen, TU Peng, TAN Xinrong

2018, 53(3): 565-573. doi: 10.3969/j.issn.0258-2724.2018.03.018

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An attempt was made to establish an assessment system for subsurface karst development by combining quantitative and qualitative methods. The assessment results can assist the preliminary determination of the extent of underground karst development and guide the planning and construction of undergro...

Multiple Model Analysis for Studying Groundwater Uncertainties

SONG Kai, LIU Dan, LIU Jian

2018, 53(3): 574-581. doi: 10.3969/j.issn.0258-2724.2018.03.019

[Abstract](511)

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Multiple Model Analysis was applied to study the groundwater modelling uncertainties caused by the deviation of model structure and heterogeneity in aquifer media. According to different natural conditions, two hydrogeological conceptual models were established. Using a large number of model paramet...

Algorithm Development and Application of Double-Yield-Surface Elastoplastic Constitutive Model for Earth-Rock Materials

CEN Weijun, CHEN Sining, Deng Tongchun, XIONG Kun

2018, 53(3): 582-588. doi: 10.3969/j.issn.0258-2724.2018.03.020

[Abstract](476)

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To enrich the constitutive models of geotechnical materials in universal commercial finite-element analysis software suites, e.g. ADINA, ABAQUS, and ANSYS, and to improve the precise simulation ability for certain geotechnical structures, Shen's double-yield-surface elastoplastic model was chosen as...

Predictive Controller with UKBF for Marine Dynamic Positioning System

SU Yixin, ZHAO Jun, ZHANG Huajun

2018, 53(3): 589-595. doi: 10.3969/j.issn.0258-2724.2018.03.021

[Abstract](553)

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For surface vessel dynamic positioning (DP) system controls, a design method for predictive controllers is proposed based on the unscented Kalman-Bucy filtering (UKBF) algorithm and on a non-switching analytical model predictive control (NSAMPC) method. To avoid linearization and discretization erro...

Effect of Thread Wear on Anti-Loosening Ability of Threaded Fastener under Vibration

ZHANG Mingyuan, LU Liantao, ZHANG Yuanbin, ZHANG Jiwang, ZENG Dongfang

2018, 53(3): 596-601. doi: 10.3969/j.issn.0258-2724.2018.03.022

[Abstract](491)

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In order to improve the anti-loosening ability of threaded fasteners under vibration, the anti-loosening abilities of the electro-zinc-plated fastener (EZP) and the electro-zinc-plated fastener treated by fine particle peening (FPP-EZP) were evaluated using a fastener transverse vibration apparatus....

Design and Analysis of New Type of Piston Pump

LIN Chao, WEI Yanqun, ZHAO Xianglu, WU Xiaoyong

2018, 53(3): 602-609. doi: 10.3969/j.issn.0258-2724.2018.03.023

[Abstract](640)

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To improve the pulsating performance of a swashplate piston pump, a new type of double-acting piston pump is designed based on the meshing theory and the related knowledge of geometry. The pump is driven by the double curve-face gear and its pistons drain oil uninterruptedly. By using the transmissi...

Research and Prospect on High-Speed Catenary Component Failure

TAN Deqiang, MO Jiliang, PENG Jinfang, LUO Jian, CHEN Weirong, ZHU Minhao

2018, 53(3): 610-619. doi: 10.3969/j.issn.0258-2724.2018.03.024

[Abstract](688)

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The failure of catenary components seriously affects the operational safety of a catenary system, and the reliability of the catenary system provides an important foundation for the safe operation of trains and railway lines. In order to promote the development of high-speed catenary equipment techn...

Decoupling Operation Mode of Controllable Reactor of Transformer Type

TIAN Mingxing, LI Jin, Gao Yuan, LIU Yibin, MIN Yongzhi

2018, 53(3): 620-627. doi: 10.3969/j.issn.0258-2724.2018.03.025

[Abstract](533)

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As there is an electromagnetic coupling between the windings of a controllable reactor of transformer type (CRT), the current passing through each control winding cannot be maintained at its rated value, causing a considerable waste of winding material. To solve this problem, a decoupling operation ...

Pareto Hybrid Ant Colony and Genetic Algorithm for Multi-Objective U-Shaped Disassembly Line Balancing Problem

ZHANG Zeqiang, WANG Kaipu, ZHU Lixia, CHENG Wenming

2018, 53(3): 628-637, 660. doi: 10.3969/j.issn.0258-2724.2018.03.026

[Abstract](547)

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Owing to the incapability of traditional methods in solving multi-objective U-shaped disassembly line balancing problem (UDLBP), a multi-objective ant colony genetic algorithm based on Pareto set is proposed to solve the UDLBP. In constructing the initial solution phase, the maximum operation time a...

RBF Neural Network Robot Manipulator Control Based on Fuzzy Compensation

MAO Run, GAO Hongli, SONG Xingguo

2018, 53(3): 638-645. doi: 10.3969/j.issn.0258-2724.2018.03.027

[Abstract](417)

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For achieving high precision trajectory tracking control of robot manipulators, a control strategy based on fuzzy logic compensation for radial basis function (RBF) neural networks has been proposed. First, the output of a proportional-integral (PD) controller was used in conjunction with an RBF neu...

Adaptive Imaging Control System Based on Traffic Video Analysis

ZHANG Hongbin, HUANG Shan, YIN Yue

2018, 53(3): 646-653. doi: 10.3969/j.issn.0258-2724.2018.03.028

[Abstract](435)

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To ensure accurate video detection and data collection under high dynamic illumination and complicated road conditions, an adaptive traffic imaging control system was developed. A high-definition traffic imaging system was designed to meet the needs of full-time wide-field comprehensive detection. T...

Risk Transfer Mechanism and Control in Logistics of Fresh Agriculture Product Supply Chain

FU Zhuo, YAN Yusong, GUO Qian, QIU Zhongquan

2018, 53(3): 654-660. doi: 10.3969/j.issn.0258-2724.2018.03.029

[Abstract](615)

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In order to better reflect the transmission of financial risk caused by the time deviation of a logistics operation, the transmission problem of overdue risk caused by logistics delays in the supply chain of fresh agricultural products was analysed, based on the condition of time constraints of a lo...

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2018 Vol. 31, No. 3