西南交通大学学报

Mechanisms and Countermeasures of Out-of-Roundness Wear on Railway Vehicle Wheels

JIN Xuesong, WU Yue, LIANG Shuling, WEN Zefeng

2018, 53(1): 1-14. doi: 10.3969/j.issn.0258-2724.2018.01.001

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The rapid development of high-speed railway in China has significantly improved travel, and thus, people's quality of life. Travel times have been greatly shortened and work efficiency has improved considerably. China's high-speed railway network is becoming a "great artery for the rapid development...

Field Test on Controlled Grouting Technology for Soft Soil Subgrade of High-Speed Railway

YANG Xin'an, GUO Le, WANG Shujie

2018, 53(1): 15-22. doi: 10.3969/j.issn.0258-2724.2018.01.002

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This study proposes the controlled grouting technology to effectively control the influence of soft soil subgrade grouting on the surface and rail surface deformation of operating high-speed railway. Field tests on grouting uplift for soft soil composite subgrade of high-speed railway, located at th...

Fatigue Testing of CRTS Ⅲ Ballastless Slab Track Structures under Transverse Bending

LIU Xiaochun, JIN Cheng, YU Zhiwu, HE Chen, YANG Yiyi

2018, 53(1): 23-30. doi: 10.3969/j.issn.0258-2724.2018.01.003

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To investigate the transverse mechanical performance of CRTS Ⅲ slab ballastless track structures under the cyclic action of train loads, a full-scale CRTS Ⅲ slab track structure was fabricated using the same materials and technology as that employed in practical on-site construction applications. Si...

Simulation Solution Method for Long and Heavy-Haul Trains Negotiating Elastic Curved Tracks

LIU Pengfei, WANG Kaiyun, ZHAI Wanming

2018, 53(1): 31-37. doi: 10.3969/j.issn.0258-2724.2018.01.004

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To solve the synchronisation simulation problem for long trains and continuous elastic tracks, a representative case employing a train curving negotiation is used. A heavy-haul train-track coupled dynamic model is used to analyse the dynamic performance of the track structure with a 30 t axle-load t...

Shear Behavior of Mortar Layer in Continuous Slab Track with Different Arrangement Schemes of Embedded Steel Bars

ZHONG Yanglong, GAO Liang, HOU Bowen

2018, 53(1): 38-45, 63. doi: 10.3969/j.issn.0258-2724.2018.01.005

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In order to study the reasonable arrangement scheme of embedded steel bars under different temperatures, a three-dimensional finite element model of continuous slab track was established. In the model, a surface based cohesive zone model (SCZM) was introduced and utilized to simulate the complex int...

Deflection Calculation and Analysis of PC Box Girder Bridges with Corrugated Steel Webs

JI Wei, LIN Pengzhen, LIU Shizhong

2018, 53(1): 46-55. doi: 10.3969/j.issn.0258-2724.2018.01.006

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In order to study the effects of shear lag and shear deformation caused by corrugated steel webs on the deflections of prestressed concrete (PC) box girder bridges with corrugated steel webs (CSWs), the deflection calculation for this type of bridge was calculated based on the energy variational met...

Application Study on Grillage Method for Multiple-Cells Box Girder with Transverse Slope

HUANG Zuwei, LEI Junqing, TANG Jishun

2018, 53(1): 56-63. doi: 10.3969/j.issn.0258-2724.2018.01.007

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Mechanical properties of multiple-cells box girder with the transverse slope were analyzed in order to study the factors when using the grillage method. Based on the grillage method, formulas for multiple-cells box girder with tte transverse slope were derived while rationality of considering the tr...

Two-Dimensional Coupled Flutter Method Based on Genetic Hybrid Algorithm

ZHENG Shixiong, ZHU Jinbo, TANG Yu, GUO Junfeng

2018, 53(1): 64-71. doi: 10.3969/j.issn.0258-2724.2018.01.008

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Based on the traditional systematic analysis method of 2d2DOF (two dimensional two degree of freedom), flutter analysis was transformed into a solution to the nonlinear equations of system vibration frequency, innovatively. Several numerical iterative methods for superlinear convergence, such as the...

Failure Mode of Isolated Beam Bridge by Weighted Rank Sum Ratio Method

ZHANG Yun, TAN Ping, HUANG Jiadong

2018, 53(1): 72-78. doi: 10.3969/j.issn.0258-2724.2018.01.009

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To estimate the failure modes of seismically isolated continuous girder bridges, a practical engineering with six spans was analyzed considering the uncertainty of seismic ground motions. Sixteen ground motion records were selected to be used in IDA method, which could provide sufficient accuracy of...

Dynamic Response Analysis of Bridge Pier in Deep Water under Combined Loads of Wave, Current and Earthquake

WU Anjie, YANG Wanli, ZHAO Lei

2018, 53(1): 79-87. doi: 10.3969/j.issn.0258-2724.2018.01.010

[Abstract](673)

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The dynamic equation of a structure under the combined loads of wave, current, and earthquake, was presented based on the nonlinear Morison equation, to reveal the coupling mechanism of water and bridge substructure under the combined action of wave-current and earthquake. The dynamic responses of a...

Dynamic Reliability Analysis on Pounding of High-Pier Bridges Subjected to Stochastic Seismic Excitations

JIA Hongyu, DU Xiuli, LUO Nan, ZHANG Jin, ZHENG Shixiong, ZHANG Keyue

2018, 53(1): 88-94. doi: 10.3969/j.issn.0258-2724.2018.01.011

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A dynamic reliability analysis based on the pseudo-excitation method in the frequency domain was proposed to investigate the pounding reliability of high-pier bridges subjected to seismic excitations with different ground motion intensity levels. A high-pier bridge was selected as the numerical exam...

Influence of Reservoir Water Storage on Wind Characteristics over Bridge Site in Mountainous Area

WANG Yunfei, WANG Bin, LI Yongle

2018, 53(1): 95-101, 145. doi: 10.3969/j.issn.0258-2724.2018.01.012

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In this study, the influence of a hydropower dam built in a mountainous region on the wind characteristics of a bridge site in the reservoir area after storing water was examined.For this purpose, the example of a long-span suspension bridge over a deep-cutting gorge in a complicated mountainous are...

Numerical Study of Horizontal Wave Load on Composite Pile Foundation in Marine Environment

XIANG Baoshan, WANG Shaohua, CAI Zilong, ZHU Bing, ZHANG Qibo

2018, 53(1): 102-108. doi: 10.3969/j.issn.0258-2724.2018.01.013

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To investigate the effects of pile cap submerged depth and wave obliquity on wave load on a composite pile foundation, a three-dimensional numerical model for wave-structure interaction around the Pingtan Strait railway bridge foundation was established. This model was based on the CFD code FLOW-3D,...

Effect of Pounding on Elastic-Plastic Dynamic Response of High Pier Bridge in Mountainous Area

LI Xi, JIA Hongyu, LI Qian, KANG Rui, CHEN Zhiwei

2018, 53(1): 109-118. doi: 10.3969/j.issn.0258-2724.2018.01.014

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To study the effect of pounding on the seismic response of high-pier bridge in mountainous areas, the elastic-plastic dynamic analysis models of two typical bridge structures were established by using the OpenSees framework, based on the prototype of a real high-pier bridge. The variation in stiffne...

Construction Parameters Control of Shield Tunnel Underneath Traversing Existing Dual Shield Tunnels

MA Wenhui, PENG Hua, YANG Chengyong

2018, 53(1): 119-127. doi: 10.3969/j.issn.0258-2724.2018.01.015

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In order to investigate reasonable construction parameters of a shield tunnel underneath traversing existing dual shield tunnels, the project that shield tunnel of the East Trunk Canal of the South-to-North Water Diversion Project traversed subway shield tunnels in Beijing was studied as an example....

Characterization of Vertical and Horizontal Propagations of Double Cracks in Asphalt Pavements under Moving Loads

AI Changfa, XU Cheng, REN Dongya, GUO Yujin, YANG Enhui

2018, 53(1): 128-135. doi: 10.3969/j.issn.0258-2724.2018.01.016

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The purpose of this research is to analyse the evolution of vertical and horizontal propagations of double cracks in asphalt pavements under moving loads using fracture mechanics and finite-element numerical simulations. In this regard, the effects of cracking space and reflective cracking depth on ...

Monitoring Video-Based Visibility Detection Method and System for Highways in China

ZHANG Changli, MENG Ying, LI Pengchao, SUN Ting

2018, 53(1): 136-145. doi: 10.3969/j.issn.0258-2724.2018.01.017

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In view of the urgent demands for visibility detection, alarm and emergency disposal on highways in China, a monitoring video-based method for highway visibility detection was proposed. In this method, images of fixed-distance reference objects were first extracted from monitoring camera images, and...

Seismic Vulnerabilitu Models and Simplified Calculation Method for Regular Highway Girder Bridges

CHEN Libo, HUANG Caigui, HUANG Yongbing, LI Huaiguang

2018, 53(1): 146-155. doi: 10.3969/j.issn.0258-2724.2018.01.018

[Abstract](469)

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In order to swiftly assess the probability of a bridge structure reaching a specific damage state, seismic vulnerability models for regular highway girder bridges and a simplified method for their calculation are established, based on the results of a nonlinear dynamic time history analysis. Dependi...

Simulation on Survivability and Cascading Failure Propagation of Urban Subway-Bus Compound Network

SHEN Li, ZHANG Dianye, XIANG Yang, WANG Zhouquan, ZHANG Tong

2018, 53(1): 156-163, 196. doi: 10.3969/j.issn.0258-2724.2018.01.019

[Abstract](852)

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To study the topological characteristics of urban public transit compound network, the validity of urban subway-bus compound network in Chengdu under attack&congestion was analyzed by constructing multimode topology network. Through the complex network theory, firstly, the static invulnerability...

Numerical Simulation of Gas-Liquid Two-Phase Flow at Various Inlet Positions in Bubble Column at Low Gas Velocity

WANG Le, SU Junwei, ZHENG Xipeng, YANG Shunsheng

2018, 53(1): 164-172. doi: 10.3969/j.issn.0258-2724.2018.01.020

[Abstract](482)

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In order to examine the law of the gas-liquid two-phase flow at various inlet positions of a bubble column, an Euler-Euler two-fluid model coupled with the population balance model (PBM) was used to simulate the effects of four inlets at various positions in the middle of the bubble column bottom on...

Optimum Sensor Placement Method for Cable-Stayed Bridges Based on Damage Identifiability

LIU Jie, WANG Hailong, ZHANG Zhiguo, ZHANG Ruiyun, CAO Lihui, WANG Guoan

2018, 53(1): 173-181. doi: 10.3969/j.issn.0258-2724.2018.01.021

[Abstract](457)

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In order to make the modal parameters identified by the sensors on cable-stayed bridges that are sufficiently sensitive to structural damage, a damage information index of the node degree of freedom containing the damage information of all elements was proposed and obtained, considering the damage i...

Novel Scattering Path Recognition Algorithm Based on LPMD

DENG Ping, RUI Yang, DENG Shuifa

2018, 53(1): 182-188. doi: 10.3969/j.issn.0258-2724.2018.01.022

[Abstract](514)

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Non-line-of-sight (NLOS) error is the major source of error in ground wireless localization. In order to recognize single-bound scattering path and multiple-bound scattering paths from all the NLOS scattering paths, we propose a novel recognition algorithm based on line-of-possible-mobile-device (LP...

Intrapulse Feature Evaluation Model of Radar Emitter Signal Based on Differential Evolution, Particle Swarm Optimization and Projection Pursuit Algorithm

ZHU Bin, JIN Weidong, YU Zhibin

2018, 53(1): 189-196. doi: 10.3969/j.issn.0258-2724.2018.01.023

[Abstract](448)

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To address the problems in comprehensive evaluation of radar emitter signal (RES) intrapulse features, such as incomplete evaluation criteria and the lack of objectivity, a new comprehensive evaluation model of RES intrapulse features was proposed based on swarm intelligence. First, the comprehensiv...

Data Exchange Method of Railway Engineering Information Model for GIS Applications

LI Hao, ZHAO Guotang, FAN Dingyuan, FAN Dengke

2018, 53(1): 197-205. doi: 10.3969/j.issn.0258-2724.2018.01.024

[Abstract](545)

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In order to realize interoperability and information sharing between different platforms, we propose a model data exchange method (called RIMTrans) supporting level of details (LoDs) and scene construction, based on multiple information separation and independent storage. First, parameters describin...

Air Traffic Flow Prediction Model Based on Improved Adding-Weighted One-Rank Local-rejion Method

WANG Chao, ZHU Ming, ZHAO Yuandi

2018, 53(1): 206-213. doi: 10.3969/j.issn.0258-2724.2018.01.025

[Abstract](549)

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Accurate air traffic flow prediction is an important basis for efficient air traffic control and management. Aiming at the inherent chaotic dynamic characteristics of air traffic flow time series, the chaotic traffic-flow time-series prediction model based on improved adding-weight one-rank local-re...

Modified Constitutive Model and Ductile Fracture Criterion for 5A06 Al-Alloy Sheets at Elevated Temperatures

LIU Kangning, LANG Lihui, XU Qiuyu

2018, 53(1): 214-218. doi: 10.3969/j.issn.0258-2724.2018.01.026

[Abstract](556)

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In order to obtain the formation characteristics of 5A06 aluminium alloy sheets, uniaxial tensile tests were conducted under different conditions. From hot tensile and fracture tests, a modified Misiolek equation was defined that extrapolated the flow stress from the diffuse necking of the metal she...

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2018 Vol. 31, No. 1