西南交通大学学报

Analysis of the Bearing Capacity of PBL Shear Connector

SONG Suidi, HUANG Bo, ZHU Bing, CHEN Kejian

2017, 30(4): 647-654. doi: 10.3969/j.issn.0258-2724.2017.04.001

[Abstract](683)

Abstract:
The PBL shear connector used to connect the corrugated steel ribs and concrete roof of long-span continuous rigid frame bridges has its unique structure, mechanics, and stress environment characteristics. In order to study the load-slip properties and bearing capacities of this kind of PBL shear con...

Influence of Crossed Hangers on Aerostatic Stability of Suspension Bridge during Constructing

LI Cuijuan, LI Yongle, YE Huawen, QIANG Shizhong

2017, 30(4): 655-662. doi: 10.3969/j.issn.0258-2724.2017.04.002

[Abstract](627)

Abstract:
In order to evaluate the aerostatic safety of super-large span suspension bridges, the 3D nonlinear finite element method was used to analyze the aerostatic stability of a super-large span suspension bridge with 3 500 m long main span and carbon fibre reinforced plastic (CFRP) cables, and the influe...

Non-Stationary Synthesis of Multi-Dimensional and Multi-Point Seismic Waves

JIA Hongyu, CHEN Hang, ZHANG Keyue, KANG Rui, ZHENG Shixiong

2017, 30(4): 663-670. doi: 10.3969/j.issn.0258-2724.2017.04.003

[Abstract](595)

Abstract:
To better understand the realistic spatial behaviour and the multi-dimensionality and non-stationary nature of seismic ground motions, the trigonometric-series method was used to generate and synthesize the multi-dimensional and non-stationary seismic waves in the present work. Firstly, the design r...

Numerical Study on Wave-induced Oscillatory Soil Liquefaction around a Partially Buried Pipeline

DUAN Lunliang, ZHENG Dongsheng, ZHANG Qibo, ZHU Bing, YANG Bing

2017, 30(4): 671-677. doi: 10.3969/j.issn.0258-2724.2017.04.004

[Abstract](601)

Abstract:
To examine the oscillatory soil response around a partially buried pipeline under wave load, a numerical model for wave-seabed-pipeline interactions was proposed using the finite element method, in which the momentum source function was added to the Reynolds-averaged Navier-Stokes (RANS) equation to...

Analysis of Ultimate Load-Carrying Capacity of Crescent-Shaped Concrete-Filled Steel Tube Arch Bridge

MA Ming, QIAN Yongjiu, XU Baishun

2017, 30(4): 678-684,714. doi: 10.3969/j.issn.0258-2724.2017.04.005

[Abstract](581)

Abstract:
In order to investigate the influences of structure parameters on the ultimate load-carrying capacity of crescent-shaped concrete-filled steel tube arch bridge, based on the constitutive relation of core concrete under confinement, the extreme-point stability of the arch bridge was analyzed. First, ...

Mechanical Characteristics of Asphalt Pavement on Bridge Deck under the Braking Force of BRT Buses

AI Changfa, ZHANG Yilin, AL-KAHTANI M S M, YANG Enhui

2017, 30(4): 685-693. doi: 10.3969/j.issn.0258-2724.2017.04.006

[Abstract](657)

Abstract:
To reveal the mechanical response characteristics of deck pavement under dynamic loads, taking for example the asphalt pavement of one viaduct in Chengdu, several asphalt pavement structures under the braking force of BRT buses were compared and analyzed by using the numerical simulation analysis me...

Research on Macropores Flow in Unsaturated Zone Soil of Slopes under Different Vegetation Community

ZENG Qiang, XU Zemin, ZHANG Youwei, ZHANG Huining, MEI Xuefeng, REN Zhe

2017, 30(4): 694-704. doi: 10.3969/j.issn.0258-2724.2017.04.007

[Abstract](626)

Abstract:
To evaluate Macropores Flow in unsaturated zone Soil of natural Slopes under rainfall conditions, A dyeing tracing test with methylene blue was carried out based on retaining the original state of the slopes and simulating rainfall process. Combined with water breakthrough method and high-precision ...

Model Test and Numerical Simulation of Penetration Process of Sleeve for Cast-in-Place Piles Driven by Vibratory Hammers

XIAO Yongjie, CHEN Fuquan, DONG Yizhi

2017, 30(4): 705-714. doi: 10.3969/j.issn.0258-2724.2017.04.008

[Abstract](505)

Abstract:
A model test was carried out to investigate the excess pore pressure, the radial extruding stresses, and the degree of soil plug of a vibratory driven sleeve for cast-in-place piles. A finite element model was also introduced by using the commercial code, ABAQUS. The results from the finite element ...

Test Study on Seismic Performance of PEC Column Fabricated with Thin-Walled Steel Plates-Steel Beam (Reduced Beam Section) Composite Frame

FANG Youzhen, DAI Yaping, WANG Chenyu, ZHAO Hongkang, YANG Bin

2017, 30(4): 715-724. doi: 10.3969/j.issn.0258-2724.2017.04.009

[Abstract](654)

Abstract:
In order to investigate the seismic performance of a partially encased concrete(PEC)column fabricated with thin-walled steel plates-steel beam (reduced beam section)composite frame, a 1/2 scale test specimen of inter-story substructure was designed and a lateral-cycle repeated loading test was condu...

Transportation Model and Simulation of Chloride in Concrete under Electric Field

LIU Zongmin, ZHAO Kunpu, MAO Jize

2017, 30(4): 725-730. doi: 10.3969/j.issn.0258-2724.2017.04.010

[Abstract](541)

Abstract:
For the study of the durability of concrete structures in the coupling environment of chlorine salt and stray current, transportation law of chloride in concrete under electric field was investigated. According to the Hamilton-type variational principle, a transportation model of chloride in concret...

Analysis of Static and Dynamic Flexural Failure Mode of Double-Layer Concrete Composite Beam

SU Chengguang, LIU Dan, CAO Shihao, ZHAO Pingrui, LIU Xueyi

2017, 30(4): 731-737. doi: 10.3969/j.issn.0258-2724.2017.04.011

[Abstract](550)

Abstract:
To deal with the interface damage of non-ballasted tracks, the coordinated working performance of double-layer concrete was studied. From the mesoscopic perspective, actual aggregate distribution was obtained using the image processing technology, and the 2D model of double-layer concrete was establ...

Three-Dimensional Analysis Model of Surrounding Rock Deformation and Support Stiffness for Tunnel Construction

YU Fucai, ZHANG Dingli, FANG Qian, SUN Zhenyu, TAI Qimin, ZHAO Jiangtao

2017, 30(4): 738-745,763. doi: 10.3969/j.issn.0258-2724.2017.04.012

[Abstract](589)

Abstract:
In the field of analyzing 3D tunnel construction mechanics, the current mechanical models have many difficulties, including low computing accuracy, high computing resource requirements, and low computing efficiency, which can't meet the practical requirements; thus, a new analysis model of a deep-bu...

Tunnel Entrance Field Characteristics Induced by High Speed Train with Crosswind at Entrance

LUO Jianjun

2017, 30(4): 746-754. doi: 10.3969/j.issn.0258-2724.2017.04.013

[Abstract](654)

Abstract:
In order to ensure the safety of high speed trains under the existing geographical landscape, a numerical simulation was performed to study the aerodynamic effects of crosswinds at the tunnel entrances. The results of the model show that a crosswind at the tunnel entrance creates a negative pressure...

Active Current Control Method Based on Grid-Connected Proton Exchange Membrane Fuel Cell

LI Qi, YU Shuang, HAN Ying, CHEN Weirong

2017, 30(4): 755-763. doi: 10.3969/j.issn.0258-2724.2017.04.014

[Abstract](596)

Abstract:
The conventional PQ control method fails to effectively respond to load demands because it does not adequately consider the actual operating characteristics of the proton exchange membrane fuel cell (PEMFC) system when the power load changes. In order to ensure that the PEMFC operation system respon...

Research on Optimised Synchronous Space Vector Pulse Width Modulation Algorithm to Minimise Harmonic Current

ZHANG Zhaoyang, ZHANG Xiaohua, GE Xinglai, FENG Xiaoyun, XU Junfeng

2017, 30(4): 764-773,788. doi: 10.3969/j.issn.0258-2724.2017.04.015

[Abstract](649)

Abstract:
One of the major concerns with regard to high-power traction inverters is the current harmonics that arise when working under the condition of low pulse ratios. To solve this problem, an optimized synchronous space vector pulse width modulation (SVPWM) was proposed to minimize root-mean-square (RMS)...

Magnetically Integrated Structure for Transformer-Type Controllable Reactors: Magnetic Circuit and Circuit Analysis

TIAN Mingxing, FU Pengyu, LI Ninghao

2017, 30(4): 774-781. doi: 10.3969/j.issn.0258-2724.2017.04.016

[Abstract](689)

Abstract:
In order to meet the high impedance and weak coupling design requirements of controllable reactors of transformer type (CRT), a practical CRT body structure is proposed, based on magnetic integration technology. First, the paper presents the new structure. By using a leakage magnet core between the ...

Measuring Impulse Grounding Resistance by Multi-Frequency Combination Method

MA Yutang, GAO Zhuqing, CAO Xiaobin, ZHOU Fangrong, DU Junle, TIAN Mingming

2017, 30(4): 782-788. doi: 10.3969/j.issn.0258-2724.2017.04.017

[Abstract](522)

Abstract:
To measure the impulse grounding resistance of transmission line towers accurately, a multi-frequency combination measurement method based on Fourier transformation is proposed. Firstly, a standard lightning impulse waveform was extended as a periodic function. This function was then expanded as a t...

Optimization of Public Traffic Network Based on Comfort Improvement

WANG Dianhai, XIONG Manchu, ZHANG Lihui, XU Fei

2017, 30(4): 789-795. doi: 10.3969/j.issn.0258-2724.2017.04.018

[Abstract](616)

Abstract:
In order to mitigate the crowding in buses and make passengers more comfortable, an optimization method is proposed based on the OD information of bus stations. An optimization model was developed with the goal of maximizing the average passenger comfort. The maximum route length and number of trans...

Structural Brittleness Analysis of Information Transfer Process of High-speed Railway Train Control

PENG Qiyuan, FENG Liping, WEN Chao, ZHANG Xinzhu

2017, 30(4): 796-801,809. doi: 10.3969/j.issn.0258-2724.2017.04.019

[Abstract](635)

Abstract:
The majority of previous studies on train control process safety focused on individual subsystems; this approach lacks wholeness and ignores the risk-sharing problem introduced by information transfer between different subsystems. Here, a three-level system, namely a computer-based interlocking syst...

Optimization Methods for Bidirectional Green Wave Control Based on Speed Volatility Interval

XIA Jingxin, TAO Yumeng, JIAO Tiantian

2017, 30(4): 802-809. doi: 10.3969/j.issn.0258-2724.2017.04.020

[Abstract](646)

Abstract:
In order to overcome the drawbacks of traditional arterial signal coordination methods that apply parallel and equal green wave bandwidth and ignore the speed volatility of segments between intersections, a non-parallel and unequal green wave band representation is introduced here based on the segme...

Game Model for Balanced Use of Parking Lots

DUAN Manzhen, CHEN Guang, CAO Huiyun, ZHOU Huxing

2017, 30(4): 810-816. doi: 10.3969/j.issn.0258-2724.2017.04.021

[Abstract](647)

Abstract:
To alleviate the local parking congestion problem caused by herding effect, a parking lots allocation model for individuation guidance was proposed using the Stackelberg game theory to describe the relationship between drivers and parking resources manager. In the model, the allocation plan strives ...

Dependable Clustering Method of Flight Trajectory in Terminal Area Based on Resampling

ZHAO Yuandi, WANG Chao, LI Shanmei, ZHANG Zhaoyue

2017, 30(4): 817-825,834. doi: 10.3969/j.issn.0258-2724.2017.04.022

[Abstract](643)

Abstract:
To master the complex and changeable spatial distribution characteristics of air traffic flow in a terminal area accurately, and to evaluate and optimize arrival and departure procedures effectively, the cluster problem of 3D real flight trajectories in a terminal area was addressed using a resampli...

Numerical Simulation of Fire-induced Smoke in Train Compartment Based on Fire Dynamics Simulation

YU Minggao, CHEN Jing, SU Guanfeng

2017, 30(4): 826-834. doi: 10.3969/j.issn.0258-2724.2017.04.023

[Abstract](631)

Abstract:
In order to examine the flow law of the fire-induced smoke in a train compartment, the study took the internal space of one compartment of the high-speed train CRH2A as a research object. Nine sets of working conditions were examined according to the states of the carriage doors, fire source power, ...

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2017 Vol. 30, No. 4