西南交通大学学报

Organization Methods of Overnight Operation for Chinese High-Speed Railways

PENG Qiyuan, YANG Kui, WEN Chao, TAO Siyu

2015, 28(4): 569-576. doi: 10.3969/j.issn.0258-2724.2015.04.001

[Abstract](1495)

Abstract:
In current network operation mode, Chinese high-speed railways have been qualified for overnight operation to serve rail passenger better and improve rail company performance. Waiting, transferring, operation and maintenance in bidirectional lines meanwhile, and demand-based periodic operation are t...

Driving Speed Decision-Making on Complex Highways Based on Strategy of Trajectory-Speed Coupling

XU Jin, ZHAO Jun, LUO Qing, SHAO Yiming

2015, 28(4): 577-589. doi: 10.3969/j.issn.0258-2724.2015.04.002

[Abstract](1037)

Abstract:
To provide the target speed profile for automatic driving of cars, a speed determination algorithm was presented based on the curvature of pre-view trajectory. Firstly, the position of trajectory on several preview cross-sections was determined and the curvature of each trajectory point was calculat...

Multi-scale Extraction of Road Network Incremental Information in Navigation Electronic Map

WANG Yanhui, YIN Chuan, DING Yuhong

2015, 28(4): 590-596. doi: 10.3969/j.issn.0258-2724.2015.04.03

[Abstract](808)

Abstract:
To overcome the disadvantage in matching old and new targets by use of usual experienced threshold value for incremental information extraction, a multi-scale extraction method is proposed for the road network incremental information in navigation electronic map. In this method, an Otsu-based adapti...

Evaluation of Guide Sign Layout in Rail Transit Hubs Based on Human Environment Interaction

GUO Fanliang, YU Dandan, DONG Baotian

2015, 28(4): 597-603. doi: 10.3969/j.issn.0258-2724.2015.04.004

[Abstract](1038)

Abstract:
In order to optimize the guide sign layout of rail transit hubs and improve their operation efficiency and service level, a simulation model of passenger way-finding behavior was established using the cellular automat based on the interactive features between passenger way-finding behaviors and guid...

Vehicle-Turnout Coupled Dynamics and Improvement Measures for Heavy Haul Lines

HOU Bowen, GAO Liang, LIU Qibin

2015, 28(4): 604-609. doi: 10.3969/j.issn.0258-2724.2015.04.005

[Abstract](934)

Abstract:
To ensure that heavy-haul vehicle safely passes the turnout zone and increase turnout service life, a refined vehicle-turnout dynamic model was established based on the rigid-flexible coupling modeling method. The effects of the directions of vehicle passing turnout and vehicle speed on the dynamic ...

Response Analysis of Long-Span Suspension Bridge under Mountainous Winds

HUANG Guoqing, SU Yanwen, PENG Liuliu, MA Cunming, LIAO Haili, LI Mingshui

2015, 28(4): 610-616. doi: 10.3969/j.issn.0258-2724.2015.04.006

[Abstract](1322)

Abstract:
This study investigates static wind and buffeting responses of long-span suspension bridges under non-stationary winds in the mountainous area, where a suspension bridge located in Yunnan province was taken as an example. Firstly, a scheme to reasonably determine the mean wind speed and accurately e...

Influence of Wind Sensor Location on Bridge Tower on Measurement Results

ZHANG Mingjin, LI Yongle, YU Xianquan, LIU Dejing, ZHANG Li

2015, 28(4): 617-622. doi: 10.3969/j.issn.0258-2724.2015.04.007

[Abstract](1113)

Abstract:
In order to investigate the effect of wind sensor location on measurement results, finite volume method (FVM) was adopted to discretize the computational domain by taking the commercial computational fluid dynamics (CFD) software Fluent as a platform, and the k- turbulence model was used to calculat...

Model Updating Method for Prefabricated Multi-girder Bridges

ZHOU Zhengmao, YUAN Guifang, TIAN Qingyong

2015, 28(4): 623-629. doi: 10.3969/j.issn.0258-2724.2015.04.008

[Abstract](849)

Abstract:
In order to reflect the real status of an existing bridge, a new model updating method for multi-girder bridges was presented. In this method, the relative displacement in a hinge joint is supposed to be proportional to the shear force; the stiffness of hinge joint, flexural and torsional rigidity o...

Stochastic Analysis of Bending Deflection for Reinforced Concrete Beam in Loading Process

XU Tengfei, BAI Xuemeng, ZHAO Renda

2015, 28(4): 630-634,647. doi: 10.3969/j.issn.0258-2724.2015.04.009

[Abstract](1010)

Abstract:
Combining Monte Carlo sampling with nonlinear finite element method, the random analysis model for nonlinear deflection of reinforced concrete beams was established to assess the random deflection of in-service reinforced concrete beams. Based on this model, the stochastic deflection of the classic ...

Construction Control of 500 m Scale Concrete- Filled Steel Tubular Arch Bridge

HAO Niebing, GU Anbang

2015, 28(4): 635-640. doi: 10.3969/j.issn.0258-2724.2015.04.010

[Abstract](963)

Abstract:
In order to solve the problems in construction control of 500 m scale concrete-filled steel tubular (CFST) arch bridges, the limitations of the existing construction control methods were analyzed. Based on the mechanical characteristics of the structure in construction process, an adjustable domain ...

Axial Compression Stress-Strain Model for UHPC Cylinders Confined by FRP

DENG Zongcai, WANG Yichao

2015, 28(4): 641-647. doi: 10.3969/j.issn.0258-2724.2015.04.011

[Abstract](1062)

Abstract:
In order to investigate the axial compression behaviors of FRP (fiber-reinforced polymer) confined UHPC (ultra-high performance concrete) specimens under axial compression, 30 FRP confined UHPC specimens and 3 unconfined UHPC cylindrical specimens were tested. The effects of FRP types, layers of fib...

Experimental Study on Shear Bearing Behavior of Continuous Steel-Concrete Composite Beams with Web Openings

LI Longqi, ZHOU Donghua, LIAO Wenyuan, CHEN Xu, YAO Kaicheng

2015, 28(4): 648-655. doi: 10.3969/j.issn.0258-2724.2015.04.012

[Abstract](1186)

Abstract:
In order to investigate the shear bearing behavior of continuous steel-concrete composite beams with web openings, five continuous composite beams with web openings under two monotonic symmetric concentrated loads were tested using the thickness and reinforcement ratio of slabs as variables. The she...

Experimental Investigation on Anisotropic Creep Characteristics of Quartz Mica Schist

LIU Huaizhong, XIE Hongqiang, HE Jiangda, XIAO Mingli, ZHUO Li, LIU Jianfeng

2015, 28(4): 656-661,697. doi: 10.3969/j.issn.0258-2724.2015.04.013

[Abstract](805)

Abstract:
To investigate the anisotropic rheological properties of quartz mica schist in the underground chamber of Danba hydropower station, two groups of uniaxial compression creep tests were conducted on quartz mica schist samples. Based on the creep characteristics of quartz mica schist, the damage Nishih...

Revision of Additional Stress in Soils Based on Centrifuge Model Tests

WU Lijun, JIANG Guanlu, LI Anhong

2015, 28(4): 662-668. doi: 10.3969/j.issn.0258-2724.2015.04.014

[Abstract](857)

Abstract:
To improve the accuracy of embankment settlement control of high-speed railway, centrifuge model tests with different loading methods were conducted to investigate the distribution of additional stress in two medium-compression soils under subgrade load. In addition, numerical computations with PLAX...

Differential-Pressure Type Precision Measuring System of High-Speed Railway Substructure Settlement

ZHANG Wenchao, SU Qian, HUANG Junjie, WANG Wubin, JIANG Wei

2015, 28(4): 669-675. doi: 10.3969/j.issn.0258-2724.2015.04.015

[Abstract](1007)

Abstract:
A differential-pressure type settlement measuring method based on pressure transmitter was proposed for precision measurement of high-speed railway substructure settlement and deformation. First, the settlement measuring principle was introduced based on Euler differential equation of static fluid. ...

Extracting Fault Features of High-Speed Train Bogies Using Copula Function

JIN Weidong, LÜ, Qianyong, SUN Yongkui

2015, 28(4): 676-682. doi: 10.3969/j.issn.0258-2724.2015.04.016

[Abstract](1261)

Abstract:
To monitor the working condition of key components of high-speed train bogies in real time, an approach using Copula function to extract features is proposed. Vibration signals of a certain high-speed train are obtained under four typical working conditions, including normal condition, yaw damper fa...

Bi-level Imperfect Maintenance Strategy and Optimization for Single Component of Electric Multiple Unit

WANG Hong, DU Weixin, LIU Zhilong, JIANG Zuhua

2015, 28(4): 683-690. doi: 10.3969/j.issn.0258-2724.2015.04.017

[Abstract](827)

Abstract:
The maintenance of EMU (electric multiple unit) components is an important measure to ensure the operation reliability of vehicles. In addition, the determination of maintenance interval has direct influence on the safety of rail transport. Therefore, based on the multi-level maintenance rule of EMU...

Numerical Simulation of Residual Stress Field and Surface Roughness for Steel Plate Subjected to Shot Peening

QIANG Bin, LI Yadong, GU Ying, YANG Yuanlu

2015, 28(4): 691-697. doi: 10.3969/j.issn.0258-2724.2015.04.018

[Abstract](1145)

Abstract:
In order to study the distribution of residual stress field and surface roughness of a steel plate after shot peening treatment, finite element models of shot peening with multiple shots are established using ABAQUS. Through the models, the dynamic process of cast shot peening of Q345 steel plates u...

Influence of Triethanolamine Content on CuS Thin Films Prepared by Chemical Bath Deposition

FAN Ximei, ZHANG Fengzhang, LI Xiangqi, WU Xiaofeng, FAN Jian, HUANG Yaohan, LI Guangli

2015, 28(4): 698-702. doi: 10.3969/j.issn.0258-2724.2015.04.019

[Abstract](773)

Abstract:
In order to study the effect of triethanolamine (TEA) on chemical bath deposition process, CuS thin films were successfully deposited onto glass substrates by chemical bath deposition using copper chloride, thiourea, ammonium and TEA as raw materials. The effects of TEA content on thickness, structu...

Microsphere Agglomeration Technique for Drug Release from Porous-Coated Ti

WANG Dongwei, XIAO Dongqin, DUAN Ke, LU Xiong, FENG Bo, WENG Jie

2015, 28(4): 703-709. doi: 10.3969/j.issn.0258-2724.2015.04.020

[Abstract](798)

Abstract:
A microsphere agglomeration technique incorporating gentamicin in porous-coated Ti was used to overcome technical disadvantages associated with available drug-release techniques for bone implants. Chitosan microspheres containing various concentrations of gentamicin were prepared by a water-in-oil e...

Assessment Method of Gear Wear Condition Based on Data Mining

ZHANG Huailiang, LIU Sen, ZOU Baiwen

2015, 28(4): 710-716. doi: 10.3969/j.issn.0258-2724.2015.04.021

[Abstract](881)

Abstract:
To improve the accuracy of gear wear condition assessment, a novel gear wear condition assessment method based on data mining technology was proposed. In this method, a spur gear pair wear test was designed to extract oil parameters and vibration parameters within the whole life cycle of the gear pa...

Modal Control Model and Vibration Control of SCLD Plate

WANG Pan, LU Jun, DENG Zhaoxiang, YANG Xiaoguang, WANG Zhengya, LIAO Haichen

2015, 28(4): 717-724. doi: 10.3969/j.issn.0258-2724.2015.04.022

[Abstract](888)

Abstract:
To effectively suppress the low frequency vibration of thin plate, the active vibration control of smart constrained layer damping (SCLD) structure was studied. Firstly, the damping characteristics of viscoelastic material varying with temperature and frequency were considered, and coupling finite e...

Performance Testing of Planar Internal Gear Primary-Enveloping Crown Worm Drive

CHEN Yonghong, CHEN Yan, WANG Jinge, ZHANG Guanghui

2015, 28(4): 725-731. doi: 10.3969/j.issn.0258-2724.2015.04.023

[Abstract](855)

Abstract:
In order to obtain the transmission performance parameters of the planar internal gear primary-enveloping crown worm drive (hereinafter referred to as crown worm drive), an electrically enclosed transmission performance test rig was built based on the meshing geometry and meshing performance to test...

Dynamic Performance of Anti-climber Device for Trains in Crash

DING Sansan, LI Qiang, LU Yujiang, XIAO Shoune

2015, 28(4): 732-739. doi: 10.3969/j.issn.0258-2724.2015.04.024

[Abstract](928)

Abstract:
In order to investigate the influential factors of a vehicle's overriding condition in a crash, a 2D collision dynamics model that considers the dynamic coupling relationship between anti-climbers was set up. Based on this model, a geometric searching algorithm for anti-climber contact was presented...

Multidisciplinary Multi-objective Optimization Design of Hollow End Mill Based on Response Surface Method

ZHAO Hongfeng, SHAN Zhongde, LIU Feng, ZANG Yong

2015, 28(4): 740-746. doi: 10.3969/j.issn.0258-2724.2015.04.025

[Abstract](887)

Abstract:
In order to deal with the difficulty of removing sand chips in digitally machining sand molds without pattern with dry cutting, a hollow end mill was designed that can remove sand chips by pneumatic conveying. First, combined with simulation analysis and response surface method, a multidisciplinary ...

Integrated Optimization of Cargo Distribution and Ship Speed for Heavy-Cargo Transportation

LI Xiaojun, XIE Xinlian

2015, 28(4): 747-754. doi: 10.3969/j.issn.0258-2724.2015.04.026

[Abstract](886)

Abstract:
In order to study the influence of different fuel consumption of semi-submersible vessels with full-load and no-load on heavy cargo distribution and optimal speed, a integrated optimization model of cargo distribution and ship speed was built, and a global search method based on an insertion method ...

Document Semantic Compression Algorithm Based on Phrase Topic Model

WANG Lidong, ZHANG Yin, LÜ, Mingqi

2015, 28(4): 755-763. doi: 10.3969/j.issn.0258-2724.2015.04.027

[Abstract](888)

Abstract:
To extract representative semantic terms, a document SCPTM (semantic compression based on phrase topic modeling) algorithm was proposed. Firstly, SCPTM converts semantic terms extraction to the optimization model of maximization, and uses a greedy search algorithm to generate approximate solution. T...

Quantitative Indices of Streetscape Visual Evaluation and Their Validity Analyses

HAN Junwei, DONG Liang

2015, 28(4): 764-769. doi: 10.3969/j.issn.0258-2724.2015.04.028

[Abstract](992)

Abstract:
In order to establish an effective index system of streetscape visual evaluation, 6 quantitative indices were proposed to reflect the objective visual attributes of streetscape based on the idea of image processing, and their validity was verified by digital images of 10 walking streets. The mathema...

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2015 Vol. 28, No. 4