西南交通大学学报

Using Free-Station Linear-Angular Intersection Network in Tunnel Horizontal Survey of High-Speed Railway

LIU Chenglong, JIN Guoqing, YANG Xuefeng, WANG Changjin, XU Xiaozuo

2014, 27(1): 1-7. doi: 10.3969/j.issn.0258-2724.2014.01.001

[Abstract](1384)

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Abstract:
To deal with the defects of loop traverse networks for the tunnel of high-speed railway, such as less redundant observations, great sensitivity to lateral refraction, difficult usage of control points and large lateral error, a new method using free-station linear-angular intersection network for th...

Strapdown Inertial Measurement Method Based on Data Fusion Technique and Its Application to Railway Track

WANG Xuemei, NI Wenbo

2014, 27(1): 8-14,51. doi: 10.3969/j.issn.0258-2724.2014.01.002

[Abstract](1096)

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Abstract:
To further increase the accuracy of strapdown inertial measurement system, based on Kalman data fusion technique, a novel strapdown inertial measuring method for railway track geometrical parameters was proposed. By analyzing major error factors that affect the strapdown inertial system, the error s...

Dynamics Interaction between Heavy-Haul Locomotive and Track under Driving Conditions

LIU Pengfei, WANG Kaiyun, ZHAI Wanming

2014, 27(1): 15-20. doi: 10.3969/j.issn.0258-2724.2014.01.003

[Abstract](1334)

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In order to investigate the characteristics of the dynamic interaction between locomotive and elastic track, a locomotive-track coupled dynamics model for the heavy-haul locomotive driven by axle hung traction motor was built, taking the electric motor drive system and traction into account. Then, t...

Modeling of Coupler and Draft Gear Systems and Their Compressive Behaviors for Heavy-Haul Locomotives

XU Ziqiang, WU Qing, MA Weihua, LUO Shihui

2014, 27(1): 21-26. doi: 10.3969/j.issn.0258-2724.2014.01.004

[Abstract](1585)

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To study the compressive behavior of the coupler and draft gear system for heavy-haul locomotives, a typical cylindrical-pin coupler with coupler shoulder alignment control module and a long-flat pin coupler with tail friction surface were built, and a mathematical model for the coupler and draft ge...

Feature Extraction of High Speed Train Bogie Based on Ensemble Empirical Mode Decomposition and Sample Entropy

QIN Na, JIN Weidong, HUANG Jin, LI Zhimin, LIU Jingbo

2014, 27(1): 27-32. doi: 10.3969/j.issn.0258-2724.2014.01.005

[Abstract](1360)

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Abstract:
To monitor the working condition of key components of high speed train bogie in time, a novel method for feature extraction is proposed by combination of ensemble empirical mode decomposition (EEMD) and sample entropy theory. Vibration signals are obtained from train body and bogie under four typica...

Dynamic Reliability of Novel Damped Outrigger System

TAN Ping, FANG Chuangjie, WANG Lei, ZHOU Fulin

2014, 27(1): 33-38,65. doi: 10.3969/j.issn.0258-2724.2014.01.006

[Abstract](1116)

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Two novel damped outrigger systems, viscous type (VD) and buckling restrained brace type (BRB), were presented for high rise buildings with outriggers. The probability density evolution method (PDEM) was introduced into the analysis of such systems. Random sources from site excitation and damper par...

Seismic Reliability Analysis of Continuous Rigid Frame Bridge Using Probability Density Evolution Method

LIU Zhangjun, XIONG Min, WAN Yong

2014, 27(1): 39-44. doi: 10.3969/j.issn.0258-2724.2014.01.007

[Abstract](1239)

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In engineering practice, ground motion has strong randomness in time and spatial distributions. In order to capture accurately the seismic response behavior of long-span bridge structures, the randomness of earthquake excitation should be considered in dynamic response and reliability analyses. By u...

Relability of van der Pol-Duffing Oscillator with Fractional Derivative under Wide-Band Noise Excitations

CHEN Lincong, LI Haifeng, MEI Zhen, ZHU Weiqiu

2014, 27(1): 45-51. doi: 10.3969/j.issn.0258-2724.2014.01.008

[Abstract](1363)

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To investigate the first-passage time of van der Pol-Duffing oscillator with fractional derivative under wide-band noise excitations, the restoring force described by a fractional derivative was firstly separated into the equivalent quasi-linear dissipative force and quasi-linear restoring force by ...

Full-Scale Model Test of Pre-stressed Cable-Pylon Anchorage for Single-Oblique-Pylon Cable-Stayed Bridges

YE Huawen, LI Cuijuan, XU Xun, XIAO Lin, QIANG Shizhong

2014, 27(1): 52-58. doi: 10.3969/j.issn.0258-2724.2014.01.009

[Abstract](1100)

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In order to ensure the safety of cable-pylon anchorage of Maxin Bridge in Xiamen, a full-scale model test under oblique loading and spatial finite element analysis were conducted to analyze the mechanical behavior of the prestressed cable pylon installed with asymmetric cables and embedded with smal...

Short-Term Temperature Characteristics of H-Shaped Section Concrete Pylon of Cable-Stayed Bridge

DAI Pu, QIAN Yongjiu

2014, 27(1): 59-65. doi: 10.3969/j.issn.0258-2724.2014.01.010

[Abstract](1244)

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In order to research the effects of temperature load acting on solid concrete pylon, a calculation method was put forward based on the fundamental principles of the heat transfer theory. In this method, initial conditions are determined by means of applying periodic load, and boundary conditions are...

Experimental Investigation of Temperature Effects on Dynamic Characteristics of Reinforced Concrete Slab

CHEN Bo, SUN Yuzhou, GUO Weihua

2014, 27(1): 66-71. doi: 10.3969/j.issn.0258-2724.2014.01.011

[Abstract](1043)

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Concrete structures are prone to solar radiation and environmental air changes, which may cause non-uniform temperature distribution and thereby induce changes in structural dynamic properties. An experimental model was constructed to conduct the measurement on time-varying temperature distribution ...

Bending Performances of High-Strength Steel-Encased Composite Beams

CAO Lilin, SHI Qiyin, WANG Zhen, GE Yitao, LI Aiqun

2014, 27(1): 72-78. doi: 10.3969/j.issn.0258-2724.2014.01.012

[Abstract](1028)

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In order to investigate the bending behavior of high-strength steel-encased composite beams under static load, bending performances of three simply-supported beam specimens with full-interaction and different strengths of steel and concrete were investigated experimentally. The load-defection relati...

Dimension-Reduction Method for Structural Reliability Analysis

LI Jinping, JIAO Shengjie, CHEN Jianjun, LIU Guoliang, XU Xinxin

2014, 27(1): 79-85. doi: 10.3969/j.issn.0258-2724.2014.01.013

[Abstract](1180)

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To predict the reliability of implicit and nonliear performance function for complex structures, a dimension-reduction method was presented. The multi-dimensional integration applied to calculate statistical moments of performance function is transformed into multiple low dimensional integrations us...

Synthetic Displacement of Steady-State Vibration under Random-Phase Harmonic Excitation

WANG Baisheng

2014, 27(1): 86-92. doi: 10.3969/j.issn.0258-2724.2014.01.014

[Abstract](916)

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The superstructure members of multi-story factories directly sustain the dynamic loads of power machines. Accurate displacement calculation of such members is considered as a key problem that remains to be solved. Based on the theories of probability and vibration, the distribution function of synth...

Computational Modeling of Flows in Random Porous Media using Lattice Boltzmann Method

LUO Zhongxian, QIU Yanjun, YU Huaqian

2014, 27(1): 93-96,118. doi: 10.3969/j.issn.0258-2724.2014.01.015

[Abstract](963)

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In order to capture the relation between permeability and porosity, fluid flowing through two-dimensional random porous media was simulated at pore level by enforcing the no-slip condition on the fluid-solid interface. Fluid flow in two dimensional randomly generated porous media was simulated at th...

Experimental Study on Acoustic Emission Features of Marbles during Unloading Failure Process

CONG Yu, WANG Zaiquan, ZHENG Yingren, ZHANG Liming

2014, 27(1): 97-104. doi: 10.3969/j.issn.0258-2724.2014.01.016

[Abstract](933)

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To explore the relationship between stress path and emission characteristics during failure process, the conventional triaxial compression test, and constant axial stress and unloading confining pressure test were performed on marbles. The results show that acoustic emission features differ with str...

Accuracy of Settlement Prediction of Composite Foundation by Centrifuge Model Tests

FENG Yan, JIANG Guanlu, CHEN Weizhi, LI Anhong

2014, 27(1): 105-110. doi: 10.3969/j.issn.0258-2724.2014.01.017

[Abstract](1083)

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To quantitatively assess the prediction ability of geotechnical centrifuge model test for composite foundation, centrifugal model tests were carried out on two kinds of composite foundation. Through the comparison of experimental and field filling results, the factors affecting the prediction accura...

Statistical Damage Constitutive Model of Cement and Asphalt Mortar

FU Qiang, XIE Youjun, ZHENG Keren, ZENG Xiaohui

2014, 27(1): 111-118. doi: 10.3969/j.issn.0258-2724.2014.01.018

[Abstract](1013)

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In order to investigate the constitutive relationship for cement and asphalt mortar (CA mortar) under different strain rates, a statistical damage constitutive model considering the strain rate effect of CA mortar was established by using the method of statistical damage mechanics. In addition, the ...

Model and Algorithm of Multi-objective Discrete Transportation Network Design under Stochastic Demand among OD Pairs

YANG Ming, SU Biao, SUN Zhijie, XU Yi

2014, 27(1): 119-125. doi: 10.3969/j.issn.0258-2724.2014.01.019

[Abstract](1284)

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In order to solve the multi-objective optimization problem under uncertain traffic demand among practical OD pairs, a bi-level programming model was proposed to optimize the traffic management, environment protection, investment cost, and user behavior for stochastic multi-objective discrete transpo...

Platoon Flow Dispersion Model Based on Truncated Normal Distribution of Speed

WU Weitiao, SHEN L, JIN Wenzhou

2014, 27(1): 126-133. doi: 10.3969/j.issn.0258-2724.2014.01.020

[Abstract](1037)

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In order to overcome the defect in Pacey's platoon dispersion model that the speed distribution assumption does not conform to the field situation, a platoon dispersion model based on flow patterns was established to study the relationship between the arriving flow distribution at the downstream int...

Relationships between Crash Rate and Traffic Density at Urban Expressway Diverge Segments

WU Yong, LIU Xinrong, LI Rui

2014, 27(1): 134-140. doi: 10.3969/j.issn.0258-2724.2014.01.021

[Abstract](988)

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In order to seek safer methods of geometric design and traffic control strategies, the characteristics of crash rate (CR) varying with traffic flow conditions at diverge segments was studied based on Nagoya Urban Expressway network. Diverge segments were generally defined from 450 m upstream to 300 ...

Computer-Assisted Determination of Out-of-Gauge Grade of Goods Based on Space Geometry

TAN Zhengmin, PENG Qiyuan, CHEN Si, GONG Xue

2014, 27(1): 141-146. doi: 10.3969/j.issn.0258-2724.2014.01.022

[Abstract](900)

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Due to the complex shape and huge bulk of out-of-gauge goods, it is difficult and error-prone to determine the level of out-of-gauge just by manual calculation with a large workload. In order to solve this problem, quantitative partition of the outer contour of goods was performed according to space...

Sorting Decision Model for Dynamic Fault Tolerance Based on Dominance Relation Rough Set

GOU Guanglei, WANG Guoyin, LI Hong

2014, 27(1): 147-152. doi: 10.3969/j.issn.0258-2724.2014.01.023

[Abstract](923)

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To enhance the fault-tolerant capacity of the dominance relation rough set model in solving sorting decision problems, three efficient sorting decision algorithms are proposed by regarding the fault-tolerant processing as a dynamic adjusting process according to the fault tolerance direction of the ...

K-Multiple Constrained Shortest Paths Problem for Connecting Path Search in International Flight Path Network

XU Tao, DING Xiaolu, LI Jianfu

2014, 27(1): 153-159. doi: 10.3969/j.issn.0258-2724.2014.01.024

[Abstract](881)

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In order to solve the problem that the connecting path search method takes long time in international flight path network, according to the features of the connecting path search in the network, a constrained Yen* algorithm, which adopts the heuristic strategy of A* algorithm and is based on the Yen...

Robust Design of Sheet Forming Process Based on Dynamic Kriging Model

XIE Yanmin

2014, 27(1): 160-164. doi: 10.3969/j.issn.0258-2724.2014.01.025

[Abstract](978)

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In order to decrease the quality fluctuation in stamping caused by uncertain factors, and to increase the global approximation accuracy of the traditional static metamodel, a robust design approach for stamping forming process based on dynamic Kriging model was proposed, which combined the robust de...

POI Classfication Based Sweep Coverage Scheme in Wireless Sensor Networks

SHU Li, LIN Feng, LIU Zhonghao, YOU Jian, ZHOU Jiliu

2014, 27(1): 165-172. doi: 10.3969/j.issn.0258-2724.2014.01.026

[Abstract](1023)

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A sweep coverage model for wireless sensor network which satisfies both POI (point of interest) coverage and data delivery was proposed. The sweep coverage problem was proved to be a NP-hard after translating it to a vehicle routing problem which is a classic combinatorial optimization problem. Base...

Substructure Normal Modes Selection Method for Component Mode Synthesis

LI Xingquan, DENG Zhaoxiang, LI Chuanbing, ZHANG Jingcheng, LI Yingqiang

2014, 27(1): 173-178. doi: 10.3969/j.issn.0258-2724.2014.01.027

[Abstract](1596)

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In order to reduce the normal mode number of retained substructures in the fixed interface component mode synthesis method, both frequency truncation and effective mode mass truncation methods were used for selection of component normal modes. By comparative analysis of the applicability of the two ...

Analysis on Influence of Train Interior Design on User Satisfaction and Visual Perception

LI Juan, XU Bochu, ZHI Jinyi, DONG Shiyu, WANG Chao

2014, 27(1): 179-184. doi: 10.3969/j.issn.0258-2724.2014.01.028

[Abstract](1198)

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To analyze the influence of train interior design factors on customer satisfaction and visual perception,9 sets of interior design plans for EMU second-class carriage were used as experimental stimulus with different tones and figure-ground relations, and the eye-movement characters of 19 subjects w...

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2014 Vol. 27, No. 1