西南交通大学学报

Characteristics of Co-seismic Landslides Triggered by the Lushan Ms7.0 Earthquake on the 20th of April, Sichuan Province, China

HUANG Runqiu, WANG Yunsheng, PEI Xiangjun, LI Yusheng, LI Weile, LUO Yonghong

2013, 26(4): 581-589. doi: 10.3969/j.issn.0258-2724.2013.04.001

[Abstract](1273)

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Abstract:
In order to reveal the distribution laws of the secondary geohazards during the Lushan Ms7.0 earthquake, field investigations and interpretation of aerial photos after the earthquake were carried out to analyze the risk of the co-seismic geohazards. The results show that rockfall was the main type o...

Debris Flow Characteristics and Movement Process of Dayanbeng Landslide in Tianquan County Triggered by “4·20” Lushan Earthquake

HU Xiewen, GU Chengzhuang, NIU Yanbo, LIANG Jingxuan, PAN Cong, WU Jianli, LIN Jinhui, CHEN Dingcai

2013, 26(4): 590-598. doi: 10.3969/j.issn.0258-2724.2013.04.002

[Abstract](1177)

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The secondary geological disasters triggered by "4·20" Lushan strong earthquake were dominated by rockfalls rather than landslides, and their scales were not large. However, there was a large-scale landslide in Damiao Village, Laochang Township, Tianquan County, the only large-scale landslide in the...

Trigger Effect of Earthquake Geohazards around Baoxing County Induced by Lushan 4·20 Strong Earthquake

HU Xiewen, LIN Jinhui, ZHANG Maochun, XU Hao, LÜ, Junlei, GU Chengzhuang

2013, 26(4): 599-608. doi: 10.3969/j.issn.0258-2724.2013.04.003

[Abstract](1147)

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Even though Lushan 4·20 strong earthquake has characteristics of high seismic magnitude and strong destructiveness, its secondary geological disasters are dominated by rockfalls rather than landslides. Compared with secondary geological disasters induced by 5·12 Wenchuan earthquake, their size and n...

Distribution Law of Landslides Triggered by Earthquake Based on Cellular Automata

HUANG Yidan, YAO Lingkan, GUO Chenwen

2013, 26(4): 609-615. doi: 10.3969/j.issn.0258-2724.2013.04.004

[Abstract](1028)

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In order to interpret the mechanism of distribution of landslides triggered by earthquake from a physical point of view, typical sections in earthquake zones in the Wenchuan earthquake were investigated, and related remote sensing data was interpreted. The result shows that there exists a negative p...

Generalized Nonlinear Unified Strength Theory of Rock

ZAN Yuewen, YU Maohong

2013, 26(4): 616-624. doi: 10.3969/j.issn.0258-2724.2013.04.005

[Abstract](1040)

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The generalized Hoek-Brown strength criterion is used widely in rock engineering. The effect of the intermediate principal stress, however, is not taken into account in the Hoek-Brown criterion. The twin-shear models and the generalized Hoek-Brown strength criterion were generalized and combined int...

Bending Bearing Capacity Calculation of Prestressed Steel Reinforced Concrete Beam under Fire

FU Chuanguo, SHANG Shengqiang, WANG Yuzhuo, LI Shibo

2013, 26(4): 625-631,658. doi: 10.3969/j.issn.0258-2724.2013.04.006

[Abstract](1328)

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Based on the bearing performance of prestressed steel reinforced concrete beam at normal temperature,the simplified calculation formula for the bending bearing capacity of the prestressed steel reinforced concrete beam under high temperatures is established by means of the cross-sectional finite ele...

Performance-Based Plastic Design Method of Reinforced Concrete Frames

XIONG Ergang, ZHANG Qian

2013, 26(4): 632-638. doi: 10.3969/j.issn.0258-2724.2013.04.007

[Abstract](975)

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In order to desirably predict and control the inelastic activity of reinforced concrete (RC) frames subjected to severe ground motions, on the basis of energy-work balance a performance-based plastic design (PBPD) method for the design of RC frames was presented. In the PBPD method, the design base ...

Stability-Based Equivalent Static Wind Loads on Large-Span Snowy Roofs

HUANG Youqin, LIN Junhong, YUE Qizhe, FU Jiyang

2013, 26(4): 639-644. doi: 10.3969/j.issn.0258-2724.2013.04.008

[Abstract](1170)

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To avoid the dynamic instability of roofs in snowstorms, a method of stability-based equivalent static wind loads was presented. Snowdrifts on roofs are firstly simulated by the computational fluid dynamics (CFD) method. The state of dynamic instability of the snowy roof is determined by the Budians...

Creep of Concrete-Filled Steel Tube Arch Bridge Considering Geometric Nonlinearity and Construction

WU Wenjie, WANG Yuanfeng, MA Yishuo

2013, 26(4): 645-650. doi: 10.3969/j.issn.0258-2724.2013.04.009

[Abstract](1497)

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In order to investigate the creep behavior of long-span concrete filled steel tube (CFST) arch bridges, a finite element model for structural creep was developed using the age-adjusted effective modulus method based on the B3 model for concrete creep. In this framework, the corotational approach for...

Experimental Investigation on Deformation Parameters of Silty Clay Based on Local Deformation Measurement

ZHANG Chonglei, JIANG Guanlu, WANG Zhimeng, LI Anhong

2013, 26(4): 651-658. doi: 10.3969/j.issn.0258-2724.2013.04.010

[Abstract](1175)

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In order to investigate the influence of deformation measurement methods on the deformation parameters of undisturbed silty clay, triaxial consolidated-drained shear tests equipped with local deformation measurement transducers were carried out to analyze the behaviors of strain-stress, shear streng...

Analysis of Dynamic Interaction between Hole Embedded in Saturated Soil and Moving Loads Using 2.5D Boundary Element Method

XU Bin, GAO Liang, LEI Xiaoyan, XU Manqing, LIU Linya

2013, 26(4): 659-665. doi: 10.3969/j.issn.0258-2724.2013.04.011

[Abstract](959)

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To study the mechanism of interaction between the saturated soil with complex surface and moving loads, a specific 2.5D boundary element method (BEM) for the problem of dynamic responses of the hole embedded in the saturated soil under a moving load was derived systematically. Based on Biot's theory...

LOD Algorithm of Terrain Based on Conservative Screen Error and Isolated Division of Quad-tree

ZHANG Junfeng, YAO Zhihong

2013, 26(4): 666-671,677. doi: 10.3969/j.issn.0258-2724.2013.04.012

[Abstract](997)

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In order to deal with the problems of enormous data redundancy, single evaluation standard of precision and strong scene of jumping at level switch in static and dynamic level of detail models, an algorithm for regular square grid was proposed. This algorithm reduces the complex computation in real-...

Rutting Model Considering Shear Behavior of Asphalt Pavement

CHEN Guangwei, LIU Liping, SU Kai, TANG Wen, CHEN Rongsheng

2013, 26(4): 672-677. doi: 10.3969/j.issn.0258-2724.2013.04.013

[Abstract](932)

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To provide a reference for the design of asphalt pavement, a rutting model considering shear behavior of asphalt pavement was established using the observed data from a circular road test, and this model was compared with the current rutting models. To verify the established rutting model, data obse...

Effect of Geometric Features of Simple Curves on Steering Behavior of Passenger Car

XU Jin, PENG Qiyuan, LUO Qing, SHAO Yiming

2013, 26(4): 678-687. doi: 10.3969/j.issn.0258-2724.2013.04.014

[Abstract](940)

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To study the kinematics characteristic and driver behaviors of vehicle driving on simple curves, a dynamic model of passenger car was built with ADAMS software to perform virtual driving tests on simple curves under the driving patterns of curve-cutting and curve-following. On the basis of the angle...

A Bi-Layer Cooperative Simulation Model of Bi-Directional Pedestrian Flows

TONG Weiping, CHENG Lin

2013, 26(4): 688-693,744. doi: 10.3969/j.issn.0258-2724.2013.04.015

[Abstract](1029)

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Pedestrian behavioral characteristics in metro interchange passageways were analyzed by means of the site observation data at Xinjiekou Station of Nanjing Subway. A comprehensive bi-layer cooperative model for bi-directional pedestrian flows was developed to eliminate the drawbacks in the existing m...

Railway Passenger Station Operation Combined Simulation Model Based on TCPN

LU Gongyuan, YAN Haifeng, XU Jin

2013, 26(4): 694-701. doi: 10.3969/j.issn.0258-2724.2013.04.016

[Abstract](1052)

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A timed colored Petri net (TCPN) simulation model is presented to describe the operating process of railway passenger stations. The TCPN model uses a route conflicting graph to define the station yard in order to solve the problems such as complex modeling process, limited applicable range, and inef...

Mechanical Properties of High-Speed Turnout Switching and Locking Device

XU Jingmang, WANG Ping, CHEN Rong, XU Hao

2013, 26(4): 702-707. doi: 10.3969/j.issn.0258-2724.2013.04.017

[Abstract](1198)

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In order to optimize the design of high-speed switching and locking device, a lateral force calculation model for switching and locking device was established according to the wheel-rail system coupled dynamics using the finite element method. Taking the external locking device of 60 kg/m rail No.18...

Modeling and Verification of Temporary Speed Restriction of CTC-S3 Train Control System

YUAN Lei, WANG Junfeng, KANG Renwei, LÜ, Jidong

2013, 26(4): 708-714. doi: 10.3969/j.issn.0258-2724.2013.04.018

[Abstract](1096)

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In order to meet the real-time performance requirement of a temporary speed restriction (TSR) system of Chinese train control system level 3 (CTCS-3), timed automata sub-models of each equipment of the train control system were established for the working process of TSR, and a timed automata network...

Decision Models and Coordinative Strategy of Closed-Loop Supply Chain Based on CVaR Criterion

XU Bing, JIA Yanli

2013, 26(4): 715-723. doi: 10.3969/j.issn.0258-2724.2013.04.019

[Abstract](941)

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The paper proposes the decentralized decision and centralized decision models of a closed-loop supply chain (CLSC) with stochastic demand, consisting of one risk-neutral manufacturer and one risk-averse retailer, with the use of the game theory and the conditional value-at-risk(CVaR) criterion. The ...

Improved Ant Colony Algorithm for Two-Sided Assembly Line Balancing Problem of Type I

ZHANG Zeqiang, HU Junyi, CHENG Wenming

2013, 26(4): 724-730. doi: 10.3969/j.issn.0258-2724.2013.04.020

[Abstract](1365)

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To overcome the disadvantages of traditional algorithms in solving large-scale two-sided assembly line balancing problems (TALBPs), such as long computing time and unstable results, an improved ant colony algorithm (ACO) was proposed for solving the TALBP of type I. In the proposed algorithm, a task...

Lattice Boltzmann Simulation of Micro-scale Gas Flows in the Transitional Regime

LIU Jiali, ZHANG Jiye, ZHANG Weihua

2013, 26(4): 731-737. doi: 10.3969/j.issn.0258-2724.2013.04.021

[Abstract](839)

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In order to study the flow characteristics of micro-scale gas in the transitional regime, the relationship between Knudsen number and dimensionless relaxation time was derived based on the gas kinetic theory and the effect of Knudsen layer. Computational formulas for the slip velocity on the wall an...

New Special Energy-Absorbing Component at Vehicle End of Rail Vehicles

LEI Cheng, XIAO Shoune, LUO Shihui

2013, 26(4): 738-744. doi: 10.3969/j.issn.0258-2724.2013.04.022

[Abstract](1136)

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In order to improve the crashworthiness of rail vehicles, a new special energy-absorbing component at vehicle end was designed according to the energy-absorbing principle of axial cutting and compression process of thin-walled metal structure. An equivalent three-dimensional finite element model for...

Stamp-Forming of Heads of Railway Tank Cars

LUO Zhengzhi, ZENG Jing, HUANG Liebing, QIN Shengmou

2013, 26(4): 745-749,768. doi: 10.3969/j.issn.0258-2724.2013.04.023

[Abstract](939)

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In order to ensure the cold stamping quality of railway tank car heads, die surfaces with three different types of draw bead structures at the die entrance, including round draw bead, rectangular draw bead and no draw bead, were designed for the head stamping process. Then, the head stamping process...

On-line Monitoring Method for Short-Circuit Reactance of V/X Wiring Traction Transformer

ZHOU Lijun, HUANG Xiaofeng, LI Xianlang, ZHANG Zhigang

2013, 26(4): 750-755. doi: 10.3969/j.issn.0258-2724.2013.04.024

[Abstract](957)

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Based on the equivalent circuit of V/X wiring traction transformer, a calculation model of short-circuit reactance was established to effectively detect the transformer winding deformation by using the monitoring current and voltage data of each primary phase and the feeder line. According to the re...

Objective Evaluation Method of Speech Quality Based on Auditory Perceptual Properties

TAN Xiaoheng, XU Ke, QIN Jiwei

2013, 26(4): 756-760. doi: 10.3969/j.issn.0258-2724.2013.04.025

[Abstract](1017)

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Based on Mel-frequency cepstral coefficients (MFCC), Mel-cepstral distance measure (Mel-CD) algorithm used for the objective evaluation of speech quality was analyzed. According to the theory of psychoacoustics, a human auditory model proposed by Johannesma and nonlinear compression were applied to ...

Performance Analysis of Multi-Channel Slotted ALOHA Protocol Based on Power Capture and Backoff

YANG Liu, FAN Pingzhi, HAO Li

2013, 26(4): 761-768. doi: 10.3969/j.issn.0258-2724.2013.04.026

[Abstract](1221)

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To extend the theoretical analysis in multi-channel slotted ALOHA protocol based on power capture and backoff, some important performance measures including access success ratio, throughput and delay performance were analyzed. The protocol performance is dependent on channel load, power capture radi...

Blind Sources Separation of Non-stationary Signals Based on Adaptive Maximum Signal-to-Noise Ratio Method

ZHANG Jie

2013, 26(4): 769-775. doi: 10.3969/j.issn.0258-2724.2013.04.027

[Abstract](1018)

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In order to improve the blind separation performance of non-stationary signals, a new blind source separation algorithm named adaptive maximum signal-to-noise ratio algorithm was proposed. This algorithm uses the signal noise ratio function as the cost function parameter and an improved multinomial ...

Cartesian Mesh Generator for Parallel Finite-Difference Time-Domain Method

CHEN Linglu, ZHOU Haijing, LI Hanyu, FU Haijun, LIAO Cheng

2013, 26(4): 776-782. doi: 10.3969/j.issn.0258-2724.2013.04.028

[Abstract](1084)

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In order to generate discrete geometric-model that can be solved by the finite-difference time-domain (FDTD) method, and avoid complicated manual operations, an efficient parallel mesh generation technique for massively parallel FDTD simulation was presented. The parallel mesh generator is capable o...

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2013 Vol. 26, No. 4