西南交通大学学报

Finite Element Model Updating of Box Girder Bridges with Corrugated Steel Webs

JI Wei, SHAO Tianyan

2021, 56(1): 1-11. doi: 10.3969/j.issn.0258-2724.20191198

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Abstract:
In order to reduce the error between the finite element values and measured values of the box girder bridge with corrugated steel webs, a bridge finite element model updating method using response surface method and Fmincon algorithm was presented, taking a box girder bridge with corrugated steel we...

Study of Extreme Wave Forces on T-and Box-Types Girder

YANG Zhiying, HUANG Bo, DUAN Lunliang, ZHANG Jiawei, ZHU Bing

2021, 56(1): 12-19. doi: 10.3969/j.issn.0258-2724.20181069

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The extreme wave forces on costal bridges with T-type girder and box-type girder have great differences due to their special geometrical shapes. First, numerical models based on solitary wave theory and cnoidal wave theory were developed to simulate the tsunami waves and hurricane waves, in which th...

Shaking Table Tests on Seismic Response of Tunnel with Longitudinal Cracking Lining

LI Bingtian, QIU Wenge, QI Xingxin, DENG Zhiheng, HU Hui

2021, 56(1): 20-27, 55. doi: 10.3969/j.issn.0258-2724.20190657

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In order to study the influence of longitudinal cracks in the lining of double track tunnel of high speed railway on the seismic safety of the structure, a large-scale shaking table model test was carried out on class IV surrounding rock in accordance with the Code for design of railway tunnel (TB 1...

Comparative Analysis of Shear Strength Models in Plastic Hinge Region for Concrete Hollow Piers

SHAO Changjiang, QI Qiming, WEI Wang, HU Chenxu

2021, 56(1): 28-36. doi: 10.3969/j.issn.0258-2724.20190196

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Accurate evaluation of shear strength in plastic hinge region is of great significance for seismic design of long-span bridges with tall piers. However, the shear design models for hollow piers are not directly listed in the current codes in China and abroad. The applicability of both the existing f...

Out-of-Plane Stability Analysis Method for Circular Arch Structures

DING Min, WANG Jiajia, JIANG Xiugen, CAO Qiongqiong, WANG Hongzhi

2021, 56(1): 37-46. doi: 10.3969/j.issn.0258-2724.20191158

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In order to analyze the out-of-plane stability behavior of circular arch structures, according to the deformation correlation of circular arch with circular curved beam, the equilibrium equations of circular curved beam were firstly established by taking secondary moment effect into account. Combine...

Evolution Characteristics of Indoor Pollutant Concentration in Buoyancy-Driven Natural Ventilation

ZHUANG Jiawei, DIAO Yongfa, ZHANG Li’an, SHEN Henggen

2021, 56(1): 47-55. doi: 10.3969/j.issn.0258-2724.20190582

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Evolution of pollutant concentration at different heights was analyzed to explore the evolution rule of indoor gaseous pollutants during a period from buoyacy-driven natural ventilation to steady state. Firstly, according to the non-uniform three-layer model used to examine the transient flows drive...

Optimization and Tensile Properties of Composite Insulator at High and Low Temperature

YAN Zhitao, MA Wenjun, ZHANG Pu, QIU Zhe

2021, 56(1): 56-61, 83. doi: 10.3969/j.issn.0258-2724.20181032

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In order to find out the influence of high and low temperature and the crimping process between the core rod and the end fittings on the bearing capacity of composite insulator, and to get the final optimized crimping mode, the finite element simulation analysis was carried out on the high and low t...

Generation Mechanism of Railway Disc Brake Squeal and Its Suppression Method

QIAO Qingfeng, YANG Weidong, ZHU Qi, CHEN Guangxiong

2021, 56(1): 62-67. doi: 10.3969/j.issn.0258-2724.20190799

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In order to study the generation mechanism of railway disc brake squeal and its influencing factors, the disc brake squeal of a railway brake unit for several different brake conditions in a field test was measured, and the generation mechanism of railway disc brake squeal was obtained. Based on the...

Research on Multi-Parameter Fitting of Fastener Structures to Suppress Wheel-Rail Friction Self-Excited Vibration

CUI Xiaolu, HUANG Bo, CHEN Guangxiong

2021, 56(1): 68-74. doi: 10.3969/j.issn.0258-2724.20190023

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To study the effect of fastener structure parameters on wheel-rail frictional self-excited oscillation, based on the viewpoint of frictional self-excited vibration of the wheel-rail, a finite element model of the wheelset-track system on a small-radius curve track supporting by the monolithic roadbe...

Experimentation on Vibration Transmission Characteristics of Modern Tram Tracks

ZHANG Xun, LI Xi, HAO Chenxi, YOU Yingchuan, CHEN Weijie, PU Yu, XU Yujin

2021, 56(1): 75-83. doi: 10.3969/j.issn.0258-2724.20200013

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In order to explore vibration transmission characteristics of different tracks in modern tram traffic (MTR), the MTR in a city was selected as the case, three different tracks were measured, i.e., ordinary track without vibration absorption elements, ordinary track with elastic cladding materials, a...

Effect of Hollow Worn Tread of Electric Multiple Units on Vehicle Stability

WANG Chen, LUO Shihui, WU Pingbo, XU Ziqiang, MA Weihua, FANG Wengwu

2021, 56(1): 84-91. doi: 10.3969/j.issn.0258-2724.20181001

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To solve the issue of frame lateral instability alarm of high-speed EMU (electric multiple units) in the running process, a vehicle dynamics model considering hollow worn tread was established. The wheel-rail relationship between worn treads of different running distance and rail as well as the infl...

Wheel Tread Wear Characteristics of High-Speed Electric Multi-Units

XU Kai, LI Fu, AN Qi, MAO Wenhui

2021, 56(1): 92-100. doi: 10.3969/j.issn.0258-2724.20190266

[Abstract](857)

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In order to study the wheel tread wear characteristics of different types of high-speed electric multi-units (EMU) vehicles, and to explore vehicle performance evolution in the period of wheel wear, the CRH380A and CRH380B EMU running on Wuhan–Guangzhou passenger dedicated line are targeted. Based o...

Mechanical Performance and Microstructure of Single Component Geopolymer Mortar

YANG Shiyu, ZHAO Renda, JIN Hesong, LI Fuhai, QIAO Yu

2021, 56(1): 101-107, 137. doi: 10.3969/j.issn.0258-2724.20190588

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In order to investigate the strength development rule and microscopic mechanism of fly ash based geopolymer mortar with different NaOH concentrations, cement-sand ratios and solution-cement ratios at various curing temperatures, the mechanical properties test were carried out. The microscopic morpho...

Low Temperature Rheological Performance Analysis of Rubber Modified Asphalt under Heat Aging Process

YU Jiang, ZHAO Qun, YE Fen, SONG Qingqing

2021, 56(1): 108-115. doi: 10.3969/j.issn.0258-2724.20180987

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In order to explore the low temperature rheological properties of rubber modified asphalt (namely the activated twin-screw extruded rubber (AER) powder modified asphalt) and AER/SBS (styrene-butadiene styrene) composite modified asphalt under aging. The low temperature rheological properties of AER ...

Feature Line Extraction from 3D Model of Oblique Photogrammetry Based on Multi-Objective Weighted Shortest Path

ZHU Qing, SHANG Qisen, HU Han, YU Haojia, ZHONG Ruofei, DING Yulin

2021, 56(1): 116-122. doi: 10.3969/j.issn.0258-2724.20180248

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Oblique photogrammetry 3D models suffer from coarse structure, high noise and regularity deficiency in corner or ridge regions, which make it difficult to extract feature lines quickly and accurately from these regions. To deal with this problem, a method of feature line extraction from 3D model of ...

Optimal Evacuation Model of Parking Vehicles in Dynamic Traffic Flows

GAN Jiahua, MAO Xinhua, ZHAO Jing

2021, 56(1): 123-130. doi: 10.3969/j.issn.0258-2724.20190611

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In order to develop an effective evacuation plan for vehicles in a parking lot and achieve the shortest evacuation time, an optimal evacuation model was built by considering the dynamic traffic flow characteristics of a road network. Firstly, according to queuing theory, the vehicle queue on each ex...

Inclusion of Latent Class in Behavior Model of Motorized Travel in City

LIU Zhiwei, LIU Jianrong, DENG Wei

2021, 56(1): 131-137. doi: 10.3969/j.issn.0258-2724.20190945

[Abstract](574)

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To study the preference heterogeneity of travel choice and the influence of psychological factors on travel behavior, the psychological latent variables that influence the travel mode choice are obtained through confirmatory factor analysis. Then, these variables are introduced into latent-class con...

Sensitivity Analysis for Transit Network with Distance Effect

DU Muqing, YU Chunbin

2021, 56(1): 138-146. doi: 10.3969/j.issn.0258-2724.20190453

[Abstract](763)

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In order to accurately analyze the performance of transit network, the amplification effect of distance on the travelers’ perceived travel cost is considered, and a generalized travel cost function is proposed in the sensitivity analysis of transit network. Firstly, as to the influence of distance e...

Text-Mining Based Risk Source Identification Model for Transportation Safety

LUO Wenhui, CAI Fengtian, WU Chuna, XIA Hongwen, MENG Xingkai

2021, 56(1): 147-152. doi: 10.3969/j.issn.0258-2724.20200140

[Abstract](755)

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In order to solve data deficiency and excessive staff workload in the risk-source identification of road transportation safety, an automatic identification model is proposed from the angle of text mining. Firstly, the model performs feature enhancement preprocessing operation through the causality s...

Automatic Traffic State Recognition from Road Videos Based on 3D Convolution Neural Network

PENG Bo, TANG Ju, ZHANG Yuanyuan, CAI Xiaoyu, MENG Fanhe

2021, 56(1): 153-159. doi: 10.3969/j.issn.0258-2724.20191169

[Abstract](601)

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In order to directlyextract effective traffic information from videos, a traffic state recognition method based on 3D CNN (3D convolutional neural networks)was put forward. Firstly, with the deep convolutional network C3D (convolutional 3D) as 3D CNN prototype, the number and position of convolution...

Design of Airborne Video Dehazing System for UCAV Based on HSV Transmission Weighted Correction

WANG Jian, QIN Chunxia, YANG Ke, REN Ping, ZHENG Jie, ZHAO Yuanpeng, CHEN Guifeng

2021, 56(1): 160-167, 205. doi: 10.3969/j.issn.0258-2724.20190985

[Abstract](545)

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As there is image degradation when the UCAV (unmanned combat air vehicle) captures the real-time image in the haze day, a low power-consumption system is designed on the basis of the HSV (hue, saturation, value) transmission weighted correction. First, the overall design of the dehazing system is co...

Segmentation of Small-Field-of-Viewstar Images Based on Kittler Minimum Error Algorithm

SHI Chunlin, YANG Peizhang, ZHANG Chao, DU Lan, YE Kai, FAN Chengxiao, LI Jian, ZU Anran

2021, 56(1): 168-175. doi: 10.3969/j.issn.0258-2724.20190841

[Abstract](711)

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Compared with conventional images, small-field-of-view star images are more susceptible to the impacts of uneven illumination and measurement noises. Meanwhile, the traditional threshold segmentation algorithm has poor processing effect or efficiency. In terms of the Gaussian distribution of star im...

Multi-Discipline Forward Collaborative Design Technology Based on BIM Interaction and Data-Driven

SHI Haiou, YUAN Quan, ZHANG Yunlin, ZENG Wenqu, ZHENG Qing, DING Guofu

2021, 56(1): 176-181. doi: 10.3969/j.issn.0258-2724.20200035

[Abstract](898)

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In order to realize data-driven collaborative design among multiple disciplines and improve design efficiency, with the analysis of the forward collaborative design model of urban rail transits, the data-driven forward collaborative design technology is proposed for multiple disciplines. Firstly, th...

Peak-Current and Peak-Voltage Control Scheme for Single-Inductor Dual-Output Buck Converter

XU Limei, WANG Yao, ZHANG Liuyang, YANG Jiayong

2021, 56(1): 182-189. doi: 10.3969/j.issn.0258-2724.20191067

[Abstract](666)

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In order to reduce the output cross regulation of single-inductor dual-output (SIDO) buck converter in continuous conduction mode (CCM), a peak-current and peak-voltage (PCPV) control method is proposed. The circuit structure and operating principle of the PCPV-controlled SIDO buck converter are ana...

Fault Diagnosis for Track Circuit Based on Interval Type-2 Neural-Fuzzy System

WANG Zicheng, ZHANG Yadong, GUO Jin, SU Lina, YANG Jing, SONG Ci, LI Kehong

2021, 56(1): 190-196. doi: 10.3969/j.issn.0258-2724.20180983

[Abstract](655)

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At present, the threshold method, despite its low efficiency, has still been used to identify the fault of track circuit on site. To handle this, an interval type-2 neural-fuzzy system (IT2NFS) was built by combining neural networks and fuzzy logic. Intelligent identification of failure modes was re...

Power Following Control Strategy of SOC Dynamic Adjustment for Small Fuel-Cell Cars

CHEN Weirong, LI Jincheng, LI Qi

2021, 56(1): 197-205. doi: 10.3969/j.issn.0258-2724.20190552

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An SOC (state of charge)-based energy management method is proposed to dynamically adjust the power following coefficient for the small-vehicle hybrid system that consists of an air-cooled proton exchange membrane fuel cell and a lithium battery. Moreover, a hybrid sightseeing car prototype is devel...

Mechanism of High-Speed Railway Interference on Power Cables of Adjacent Normal-Speed Railway

XIE Shaofeng, SUN Jingdi, LUO Bingxiang, SU Peng, LI Jingwen

2021, 56(1): 206-213. doi: 10.3969/j.issn.0258-2724.20191003

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Due to high speed, large traction power and continuously receiving current in operation, high-speed railways generate obvious electromagnetic interference on the power cables of adjacent normal-speed railways. Based on the analysis of inductive coupling and resistive coupling mechanism, the interfer...

Heat Dissipation Characteristics Analysis of Surface Air-Oil Heat Exchanger Applied in Aircraft Engine

CAI Huikun, SU Lijun, LIAO Yidai, WENG Zeju, XU Chen

2021, 56(1): 214-220. doi: 10.3969/j.issn.0258-2724.20180964

[Abstract](698)

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In order to enhance aircraft engine heat transfer performance in the conditions of ground idle speed or low flying speed, a surface air-oil exchanger was presented using air inlet passage as its dissipation area. Its heat dissipation characteristics, as well as districted simulation equivalence, wer...

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2021 Vol. 56, No. 1