西南交通大学学报

Maximum Acceleration Recording from Lushan Earthquake on April 20, 2013

WEN Ruizhi, REN Yefei, QI Wenhao, LU Tao, YANG Zhenyu, SHAN Zhendong, WANG Yunlong

2013, 26(5): 783-791. doi: 10.3969/j.issn.0258-2724.2013.05.001

[Abstract](1323)

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Abstract:
The Lushan earthquake on April 20, 2013 is another destructive event after the Wenchuan earthquake in 2008. More than 100 strong motion stations were triggered in the main shock. The 51BXD station located in Baoxing Country recorded a peak ground acceleration (PGA) of more than 1g, that is 1.026g (-...

Influence of Metro Tunneling Methods on Environment and Its Control

QI Taiyue, WU Zhanrui, LUO Chi, WANG Rui

2013, 26(5): 792-797,817. doi: 10.3969/j.issn.0258-2724.2013.05.002

[Abstract](1151)

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Abstract:
In order to probe into the effects of the drilling-blasting method for metro tunnel with complicated sections on city environment, based on the principles that the influences of city metro tunnel construction on surface ground and buildings must satisfy the vibration, deformation and stress control ...

H∞ Norm Based Optimal Design of Vibration Control for Structural Perturbation Using Tuned Liquid Damper

HUO Linsheng, SHEN Wenhe, LI Hongnan

2013, 26(5): 798-802. doi: 10.3969/j.issn.0258-2724.2013.05.003

[Abstract](1059)

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In order to reduce the vibration of building structures excited by earthquakes, the mass ratio, frequency ratio, and damping ratio of a tuned liquid column damper (TLCD) are optimized. A five-story reinforced concrete structure building is selected for the numerical example with the consideration of...

Dynamic Model for Train-Track-Bridge Coupling System Subjected to Non-uniform Seismic Excitation

LEI Hujun, LI Xiaozhen

2013, 26(5): 803-809. doi: 10.3969/j.issn.0258-2724.2013.05.004

[Abstract](1295)

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Abstract:
In order to analyze the effects of traveling wave effect on the running safety of a train running over a high-speed railway bridge subjected to earthquake action, a dynamic model for train-track-bridge system subjected to non-uniform seismic excitation was set up based on the train-track-bridge dyna...

Stiffness Transition Analysis of a Steel-Concrete Joint Section Based on Vehicle-Bridge Interaction

LIU Quanmin, LI Xiaozhen, ZHANG Xun, ZHANG Zhijun, LI Yadong

2013, 26(5): 810-817. doi: 10.3969/j.issn.0258-2724.2013.05.005

[Abstract](1123)

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In order to study the dynamic stiffness transition issue of hybrid girder bridges, a vertical vehicle-bridge coupled vibration model was built for a cable-stayed bridge with single tower. In the coupled vibration model, a finite element model for the bridge was established by converting the joint se...

Structure Damage Detection Method Based on Adaptive Stochastic Resonance Technology and Response Sensitivity Method

LIU Liu, YAN Yunju, CHANG Xiaotong, XI Zhuyou

2013, 26(5): 818-824. doi: 10.3969/j.issn.0258-2724.2013.05.006

[Abstract](1158)

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In order to solve the structural damage identification problem in strong noise environment, a two-step approach based on nonlinear denoising and damage location was proposed. In the first step, structural excitation response and background noise are processed through the nonlinear stochastic resonan...

New Method for Move Distance Calculation with Coordinate Method for Existing Railway Curve

LIU Yongxiao, LIU Xueyi, YANG Junbin, DAI Feng

2013, 26(5): 825-830. doi: 10.3969/j.issn.0258-2724.2013.05.007

[Abstract](1189)

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Abstract:
To overcome the error resulted from substituting chord length for arc length in the traditional method to calculate the move distance of a transition curve, based on the theories related to existing railway curve realignment by the coordinate method, a new method to calculate move distance was put f...

Intelligent Railway Aignment Optimization Based on Stepwise Encoding Genetic Algorithm

LI Wei, PU Hao, ZHAO Haifeng, HU Jianping, MENG Cunxi

2013, 26(5): 831-838. doi: 10.3969/j.issn.0258-2724.2013.05.008

[Abstract](1393)

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In order to achieve the optimization of railway 3D alignments, an optimization model was built, in which comprehensive factors including construction, operation, environment, and constraints were embedded. Different distributions for horizontal and vertical control points were presented. A genetic s...

Experiment Study on Engineering Property Indexes of Expansive Soil for Railway Subgrade and Its Improvement Measures

JIANG Zezhong

2013, 26(5): 839-844,850. doi: 10.3969/j.issn.0258-2724.2013.05.009

[Abstract](1447)

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In order to improve the engineering properties of undisturbed subgrade soil, systematic indoor experiments were made to study the expansive soil for the railway subgrade filling in Xi'an-Nanjing railway subgrade project. Physical and mechanical parameters of the expansive soil were measured by the b...

Wind-Resistant Optimization of Portal Frames Based on Quantum-Behaved Particle Swarm Algorithm

FU Jiyang, ZHONG Liang, HUANG Youqin, WANG Yanping, XU An

2013, 26(5): 845-850. doi: 10.3969/j.issn.0258-2724.2013.05.010

[Abstract](1199)

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In order to make up for the insufficiency of researches on the structural wind-resistant optimization of large span roofs, the quantum-behaved particle swarm algorithm was adopted to optimize a large-span roof under wind loads. Equivalent static wind loads on the structure were obtained from the dat...

Numerical Simulation of Wind-Induced Roof Snow Distributions Based on Time Variable Boundary

WANG Weihua, LIAO Haili, LI Mingshui

2013, 26(5): 851-856,967. doi: 10.3969/j.issn.0258-2724.2013.05.011

[Abstract](1075)

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In order to predict snow deposition on a building roof under wind action, a numerical method based on the Euler-Euler two-phase mixture model was employed to simulate wind-induced roof snow distributions. In the method, the latest improved k-ω turbulence model is used to turbulence closure, and the ...

Equilibrium Equation Derivation of Structures Formed by Stages Based on Plane Shell Element

XU Leiping, QIN Shunquan, MA Runping

2013, 26(5): 857-862. doi: 10.3969/j.issn.0258-2724.2013.05.012

[Abstract](1054)

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In order to research the influence factor of the final state of structures formed by stages based on plane shell element, the structural equilibrium equation including the unstressed state amounts was established. The relationship between unstressed state amounts at any point within the isoparametri...

Nonlinear Target Tracking Algorithm Based on Block Ensemble Kalman Filter

CUI Bo, ZHANG Jiashu, YANG Yu

2013, 26(5): 863-869. doi: 10.3969/j.issn.0258-2724.2013.05.013

[Abstract](1042)

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Abstract:
As target tracking performance depends on correlated tracks and the selection of filter initial states, ensemble Kalman filter was introduced to nonlinear target tracking system, and the feasibility and validity of the system were verified. A new target tracking algorithm based on block ensemble Kal...

Forest Fire-Point Location Based on Bundle Adjustment of Double Images

DUAN Zhugeng, XIAO Huashun

2013, 26(5): 870-877. doi: 10.3969/j.issn.0258-2724.2013.05.014

[Abstract](986)

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Abstract:
Using a camera to obtain the stereo pair of digital photographs of forest area, and a three-dimensional electronic compass to measure the three-dimensional attitude angles at each instant shooting as the initial values, three dimensional coordinates of the forest fire-point was determined with bundl...

Dynamic Traction Load of a Multi-mass EMU Braking Model

HE Xiaoqiong, PENG Xu, ZHOU Yingying, XIAO Jian

2013, 26(5): 878-884. doi: 10.3969/j.issn.0258-2724.2013.05.015

[Abstract](1171)

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Abstract:
As single-mass model of an EMU (electrical multiple units) model can not exactly describe vehicle braking performance, a multi-mass EMU model was established according to braking force distribution. Basic resistance, additional resistance and the time-varying power of traction network were deduced, ...

Multi-objective Optimal Control of Micro-grid Based on Event-Driven Method

CHEN Weirong, LU Wenting, DAI Chaohua

2013, 26(5): 885-891. doi: 10.3969/j.issn.0258-2724.2013.05.016

[Abstract](1000)

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The multi-objective optimal control problem of micro-grid is usually described by high dimensional nonlinear differential equations, which cannot be solved satisfactorily by current mathematics method. Hybrid control method is proposed to achieve multi-objective optimal control of micro-grid. A Stat...

A 2FSK-Based High-speed Signal Transmission Method for ICPT System

DAI Xin, DU Renjie, TANG Chunsen, WANG Zhihui, SUN Yue

2013, 26(5): 892-897. doi: 10.3969/j.issn.0258-2724.2013.05.017

[Abstract](809)

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Abstract:
In view of magnitude attenuation and electromagnetic interference in the signal transmission of the inductively power transfer (ICPT) system, a new high-speed signal transmission method based on 2FSK is proposed. This method can achieve high-speed signal transmission without increasing the number of...

Analysis of Characteristics of Wheel/Rail Rolling Contact Based on Mixed Lagrangian/Eulerian Method

XIAO Qian, XU Hongxia, WANG Chengguo, ZHANG Hai

2013, 26(5): 898-903. doi: 10.3969/j.issn.0258-2724.2013.05.018

[Abstract](1033)

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To overcome the long time consumption of the explicit finite element calculation of wheel/rail rolling contact, the mixed Lagrangian/Eulerian method is used to establish a wheel/rail rolling contact finite element model. Through this model, the elements of the wheel/rail contact region are refined, ...

Causes Analysis of Tread Spalling Defects on Solid Rolled Wheels of SS3B and DF8B Locomotives

WANG Yuhui, HE Guoqi

2013, 26(5): 904-908. doi: 10.3969/j.issn.0258-2724.2013.05.019

[Abstract](895)

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Abstract:
In order to find out the causes of locomotive wheel tread spalling defects, the tread spalling of solid rolled wheels were sampled for routine examinations, including the SS3B31024047 wheels of the SS3B locomotive, the DF8B31644017 wheels and the DF8B32774060 wheels of the DF8B locomotive. The macro...

Effect of Wheel Material on Rolling Friction and Wear Behaviors of Wheel/Rail Rollers

WANG Wenjian, WANG Hong, LIU Qiyue

2013, 26(5): 909-914. doi: 10.3969/j.issn.0258-2724.2013.05.020

[Abstract](992)

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In order to find a desired match and alleviate the wear and damage between wheel and rail materials, the rolling friction, wear, and damage behaviors between three kinds of wheel materials and U71Mn rail were investigated under dry conditions using the MMS-2A testing apparatus. The results indicate ...

3D Model Reconstruction and Its Feature Parameters Extraction of a Turbine Blade

LAI Xide, LI Guangfu, ZHANG Weibin, CHEN Xiaoming, SONG Wei, JIANG Hai

2013, 26(5): 915-920. doi: 10.3969/j.issn.0258-2724.2013.05.021

[Abstract](1086)

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In order to achieve an innovation design of turbine blades, the point cloud data of an existing turbine blade was digitally acquired by a handy laser scanner, and then a reverse design methodology was proposed to accurately reconstruct a 3D digital model and extract the geometric and aerodynamic fea...

Response Analysis of Wing-Mounted Engine Rotor System under Atmospheric Turbulence

LIU Xiaobo, TU Junchao, DENG Beibei

2013, 26(5): 921-927. doi: 10.3969/j.issn.0258-2724.2013.05.022

[Abstract](1069)

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Abstract:
In order to study the phenomenon that wing-mounted engines working at high altitudes could be affected by the atmospheric turbulence, a dynamic model of wing-mounted engine rotor system under atmospheric turbulence was established using the theories of wing aeroelastics and rotor dynamics and adopti...

Analysis of Route Travel Time Variation of Road Network Suffering Traffic Incidents

ZHANG Xi, LIU Haixu, PU Yun

2013, 26(5): 928-933. doi: 10.3969/j.issn.0258-2724.2013.05.023

[Abstract](976)

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Analyzing route travel time variation of road network suffering traffic incidents can provide reliable decision supports for the incident management of advanced traffic management systems. Taking into consideration the randomness of travelers' daily route choice when incidents with a duration of sev...

General Model and Simulation Research on Passenger-Dedicated Line Station Based on TPr/T-S

LI Wang, NI Shaoquan

2013, 26(5): 934-941. doi: 10.3969/j.issn.0258-2724.2013.05.024

[Abstract](1120)

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Abstract:
In order to construct a general passenger-dedicated line station model, which is irrelevant to the stations' structure and scale, the station model can be treated as a set of routes and tracks. Predicate/transition-system (Pr/T-S) has been extended to timed predicate/transition-system (TPr/T-S) with...

Simulating Impacts of Variable Speed Limits on Traffic Safety on Freeways

LI Zhibin, LIU Pan, SHAN Xiaonian, WANG Wei

2013, 26(5): 942-948. doi: 10.3969/j.issn.0258-2724.2013.05.025

[Abstract](1086)

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To reduce the occurrence of rear-end collisions during the propagation of kinematic waves in freeway section upstream of a recurrent bottleneck, a simulation platform for variable speed limits (VSLs) was developed using the PARAMICS microscopic simulation model. The simulation network is a freeway s...

Design and Implementation of Path Planning System Based on Improved Highway-Hierarchical Algorithm

ZHANG Guanxiang, ZHOU Xing, CAI Wenxue, ZHONG Huiling, XU Jing

2013, 26(5): 949-954. doi: 10.3969/j.issn.0258-2724.2013.05.026

[Abstract](1026)

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Highway-Hierarchical algorithm is a highly efficient path planning approach in the recent years. In the preliminary data manipulation process, there are problems of compressed ring road in the network, the strategies of multi-layer data storage, and the calculation of the optimal route. To resolve t...

Short-Term Traffic Flow Forecasting and Reliability Analysis of Urban Road

NIE Qinghui, XIA Jingxin, QIAN Zhendong

2013, 26(5): 955-960. doi: 10.3969/j.issn.0258-2724.2013.05.027

[Abstract](1130)

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In order to capture the uncertainty of short-term traffic forecasting caused by the random fluctuation of traffic flow, the heteroscedasticity which can reflect the fluctuation is used to quantify the reliability of traffic forecasting. On the basis of time series and its heteroscedastic theory, a g...

Preparation of La0.7Sr0.3MnO3 Single-Crystal Epitaxial Films and Their Magnetoresistance Properties

ZHANG Xin, YANG Xinsheng, CHENG Cuihua, ZHANG Yong, LV Li, ZHANG Min, ZHAO Yong

2013, 26(5): 961-967. doi: 10.3969/j.issn.0258-2724.2013.05.028

[Abstract](1176)

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Abstract:
In oder to obtain high quality single La0.7Sr0.3MnO3 (LSMO) buffer layers and study their low-field magnetoresistance (MR), a series of epitaxial films of perovskite manganites La0.7Sr0.3MnO3 (LSMO) deposited on the LaAlO3 (LAO) single crystal substrates were fabricated by the polymer-assisted chemi...

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2013 Vol. 26, No. 5