西南交通大学学报

Application of Digital One-Cycle Control for Current in Electromagnetic Suspension System

JIANG Qilong, LIANG Da, YAN Feng

2019, 54(1): 1-8, 22. doi: 10.3969/j.issn.0258-2724.20170771

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Abstract:
In an electromagnetic suspension system （EMS） with cascade control, the response speed and accuracy of the current loop play a vital role in the overall suspension control. A current controller was designed for digital one-cycle control （D-OCC） based on TMS320F28335 for the suspension system, in ord...

Ladder Sleeper Lateral Resistance Test and Contribution Analysis of Ballasted Track

JING Guoqing, JIA Wenli, QIANG Weile, LU Wei

2019, 54(1): 9-13. doi: 10.3969/j.issn.0258-2724.20170481

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The ladder sleeper with the advantages of good stability, less vibration, and reduction of the dynamic load transferred to the ballast can be used in high-speed, heavy-haul, and urban railways, but its lateral resistance has not been systematically studied yet. In this work, the lateral resistance o...

Analysis of Dynamics and Wheel Wear of Low Floor Vehicle Based on Different Patterns

LI Jincheng, DING Junjun, WU Pengpeng, YANG Yang, LI Fu

2019, 54(1): 14-22. doi: 10.3969/j.issn.0258-2724.20170757

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In order to reduce wheel wear of 70% low-floor trams, the steering mechanisms of the rigid wheelset and independently rotating wheels were analyzed. Two vehicle models were considered, i.e. those with traditional rigid wheelsets and with independently rotating wheels in the trailer bogies. In additi...

Failure and Parametric Analysis of Shield Tunnel Bolts under Impact Load

YAN Qixiang, LI Binjia, CHEN Hang, ZHANG Weilie, DENG Zhixin

2019, 54(1): 23-31, 38. doi: 10.3969/j.issn.0258-2724.20160637

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In order to study the influence of bolt parameters on bolt failures and segments when a derailed high-speed train impacts a shield tunnel, a numerical model of division assembling the segmental lining of a shield tunnel was established using the finite element software ABAQUS. The contact effect of ...

Study on Stress Field and Security of Primary Support in High Rock Temperature Tunnel

TANG Xinghua, WANG Mingnian, TONG Jianjun, DONG Congyu, ZHANG Chong

2019, 54(1): 32-38. doi: 10.3969/j.issn.0258-2724.20150958

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The characteristics and changing behaviour of the initial support in high rock temperature tunnel were studied to evaluate security during the construction process. First, the temperature field of the initial support was analysed during the construction process of high rock temperature tunnel by usi...

Experimentation on Stress Analysis of Arch-Shaped Open Tunnel Structure under Rockfall Impaction

TANG Jianhui, WANG Yusuo, XIE Qiang, PAN Rundong, CHEN Cheng, GUO Xiaohan, LI Maoru, ZHOU Xiaojun

2019, 54(1): 39-47. doi: 10.3969/j.issn.0258-2724.20180429

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In order to study the stress characteristics of the arch-shaped open tunnel structure under rockfall impaction, the magnitude and distribution characteristics of crosswise strain, axial force and moment in different parts of the impaction cross-section of the structure were analysed by a 1∶30 reduce...

Pre-excavation Grouting to Prevent Water Inflow of Jointed Rock in Underground Construction

LIU Rentai, ZHENG Zhuo, LI Shucai, ZHANG Qingsong

2019, 54(1): 48-54. doi: 10.3969/j.issn.0258-2724.20170551

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Fracture frequency information was acquired by drilling for pre-excavation grouting for underground construction fracture water inflow. The permeability coefficient of the surrounding rock mass was measured by pump-in tests on each section. The measured data were analysed by employing statistical me...

ZHANG Yanjun, NIAN Tingkai, WANG Liang, TANG Jun

2019, 54(1): 55-60, 72. doi: 10.3969/j.issn.0258-2724.20160366

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In the selection and manufacture of similar materials for physical model tests of rock slopes, only the similarities in the magnitudes of density, cohesion, internal friction angle and elastic modulus were generally taken into consideration. The ability of the obtained similar materials to reproduce...

Discontinuities and Engineering Geological Significances of Strong Earthquake-Induced Daguangbao Landslide

CUI Shenghua, PEI Xiangjun, HUANG Runqiu, ZHANG Weifeng, LIANG Yufei

2019, 54(1): 61-72. doi: 10.3969/j.issn.0258-2724.20160480

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The Daguangbao （DGB） landslide is the largest landslide triggered by the 2008 Wenchuan earthquake and considered as one of the largest of these events in the world. In this paper, the geological cause of the DGB landslide was analysed on the basis of rich photographs, remote sensing images, and orie...

Research on Wetting-Deformation Regularity and Microstructure Evolution Characteristics of Remoulded Loess in Triaxial Soaking Tests

GUO Nan, CHEN Zhenghan, YANG Xiaohui, ZHOU Yong, XIAO Wencheng

2019, 54(1): 73-81, 90. doi: 10.3969/j.issn.0258-2724.20160736

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To explore the wetting-deformation regularity and microstructure evolution characteristics of filled soil, three groups, 17 samples, of immersed anisotropic consolidation tests of reshaped Q₂ loess in the Yan’an new district were studied using the improved unsaturated soil triaxial apparatus with co...

Experimental Study of Stick-Slip Behaviour of Dry Granular Materials

CUI Deshan, CHEN Qiong, XIANG Wei, LIU Qingbing, WANG Jing’e, HUANG Wei

2019, 54(1): 82-90. doi: 10.3969/j.issn.0258-2724.20160615

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The stick-slip characteristics of glass beads were analysed based on an indoor triaxial test to investigate the mechanism of shallow vibration. Glass beads with diameters of 0.6–0.8 mm were used to conduct consolidated and undrained triaxial tests under cell pressures of 30, 60, 100, 200, 400, and 6...

Experimental Study on Permeability of Mining-Cracked N₂ Laterite

WANG Qiqing, LI Wenping, PEI Yabing, LÜ Chengcheng

2019, 54(1): 91-96. doi: 10.3969/j.issn.0258-2724.20160611

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The laterite of Neogene pliocene series （N₂）, abbreviated as N₂ laterite, over coal seams distributed widely in the mining area of western China is the key aquifuge soil for protecting the shallow water from being destroyed by coal mining. The permeability change induced by soil-water interactions o...

Discussion on Slope Stability Analysis Method of Abandoned Dreg Site Based on Spatial Effect

SUN Chaoyi, CHEN Congxin, ZHENG Yun, LU Zude, DENG Yangyang

2019, 54(1): 97-105. doi: 10.3969/j.issn.0258-2724.20170607

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An abandoned dreg site is a common occurrence in construction projects. There are numerous factors that influence the slope stability including the spatial effect of the concave and convex form, and side-body-end and slope strike, which play vital roles in slope stability analysis. In order to inves...

Virtual Experiments to Predict Bolster Fatigue Lifetime Based on FEM Model Validated by Static Tests

HU Jiexin, XIE Liyang, YU Haiyang, LIU Longxi, YIN Wei, HU Zhiyong

2019, 54(1): 106-112. doi: 10.3969/j.issn.0258-2724.20160536

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To study the service safety of a metro train bolster, a virtual experiment method was used to evaluate fatigue lifetime, avoiding time-consuming and expensive fatigue tests. A static test of the bolster was designed based on the EN12663-1 standard, and the stresses and displacements on its surface w...

Analysis of Required Separation Distances of High-Pier Bridges Subjected to Non-stationary Ground Motions

LI Lanping, BU Yizhi, JIA Hongyu, ZHANG Ming, LI Xi

2019, 54(1): 113-120. doi: 10.3969/j.issn.0258-2724.20180039

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To investigate the influence of non-stationary ground motions on required separation distances, the influence of site conditions on non-stationary gap under different intensities was analysed based on the random vibration theory and pseudo excitation method. First, the mathematical formulation clari...

Buffeting Response and Equivalent Wind Load of Single Cantilever Corridor Bridge in Mountainous Areas

SU Yi, LI Mingshui, YANG Yang, DUAN Qingsong

2019, 54(1): 121-128. doi: 10.3969/j.issn.0258-2724.20170647

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In order to study the buffeting response and the wind loading of a cantilevered pedestrian bridge in windy mountainous, a corridor bridge model was put in a wind tunnel to obtain its aerostatic force coefficients and buffeting responses. The maximum equivalent wind load in the transverse direction w...

Fatigue Experimental Analysis of Damaged Steel Beams Strengthened with Prestressed Unbonded CFRP Plates

YE Huawen, LI Xinshun, SHUAI Chun, QU Haobo, XU Xun, WEI Xing

2019, 54(1): 129-136. doi: 10.3969/j.issn.0258-2724.20180297

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Aged steel bridges are prone to fatigue cracking, which is a challenging problem for the safety of bridges during their service. An experimental and theoretical study was conducted to improve the fatigue performance of notched steel beams strengthened with prestressed unbounded carbon-fibre-reinforc...

Research on Equivalent Static Load of High-Rise Buildings Based on Wind-Induced Responses

LIN Yongjun, LIN Chitan, LIU Xianming, ZHANG Jing, SONG Jirong

2019, 54(1): 137-144, 188. doi: 10.3969/j.issn.0258-2724.20170654

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To study the influence of dynamic response of a high-rise building under wind loads on the along-wind equivalent static wind load, the wind-induced response of high-rise buildings was studied using the random vibration mode decomposition method. This method is based on the wind-induced response dyna...

Research on Mechanical Behaviours of New Joints of Single-Layer Reticulated Shells

CAI Jian, WANG Yongqi, CHEN Qingjun, JIANG Zhengrong, QIAN Quan, ZUO Zhiliang

2019, 54(1): 145-153. doi: 10.3969/j.issn.0258-2724.20170575

[Abstract](509)

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A new kind of welded end-plate joint for a reticulated shell with a rectangular cross-section rod was proposed. To investigate the mechanical behaviour of the proposed joint, a test model at a scale of 1∶2 was designed and subjected to static loading tests. Load-strain curves, load-displacement curv...

Filtering Characteristics of Hydraulic Suppressor with Compressible Liner

YANG Fan, DENG Bin, WANG Yuqiang, LI Zhiwei

2019, 54(1): 154-159. doi: 10.3969/j.issn.0258-2724.20170438

[Abstract](502)

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An improved expansion chamber hydraulic noise suppressor with a compressible polyurethane liner was introduced to improve the pulsation attenuation performance of conventional suppressors. The filtering characteristics of this improved configuration were studied based on the characteristics of distr...

Aerodynamic Noise Investigation of Metro Vehicle Auxiliary Converter

DING Jie, ZHANG Ping, LIU Haitao, LI Hua, ZHAO Qingliang, WANG Yongsheng

2019, 54(1): 160-167. doi: 10.3969/j.issn.0258-2724.20170187

[Abstract](436)

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To solve the problem of a 1.5 dB (A) noise excess in a metro vehicle auxiliary converter, the aerodynamic noise characteristics of an auxiliary converter are investigated by combining a numerical simulation with a noise test. First, the noise from aerodynamic sources in the auxiliary converter was c...

Study on Leachate Recirculation Volume of Aerobic Bioreactor Landfills

QIU Zhongping, LI Mingxing, LIU Yang, TANG Jian, WANG Wencan, HUA Jianjun, MENG Tao, TANG Guoxiong

2019, 54(1): 168-172. doi: 10.3969/j.issn.0258-2724.20180478

[Abstract](499)

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To study the influence of leachate recirculation on the stabilization process of aerobic landfills, an experiment was conducted to assess the variation trend of solid waste and leachate characteristics in an aerobic landfill with different recirculation rates. The landfill period was 122 days. Resul...

Two-Stream Neural Network Fusion Model for Highway Fog Detection

XIANG Yu, CONG Deming, ZHANG Yang, YUAN Fei

2019, 54(1): 173-179. doi: 10.3969/j.issn.0258-2724.20180205

[Abstract](494)

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The real-time detection of weather conditions on highways has a significant impact on high-speed traffic safety. However, the weather forecast reports weather conditions over a wide range of areas only, which cannot meet the demand of real-time detection of weather conditions in various sections of ...

Air Route Crossing Angles Optimization Model with Different Preferences

DAI Fuqing, PANG Bizhao, ZHAO Yuandi

2019, 54(1): 180-188. doi: 10.3969/j.issn.0258-2724.20170798

[Abstract](485)

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In order to investigate the internal mechanism of influence on air traffic posed by airspace structure and to clear bottlenecks of air traffic operation at air transit network nodes, the optimization of air route crossing angles was studied. After analysing the relationship between flight time, fuel...

Driver Behavior Response to Drowsiness Alarming at Different Levels

XU Chuan, GUO Qiming, WANG Xuesong

2019, 54(1): 189-195. doi: 10.3969/j.issn.0258-2724.20180254

[Abstract](589)

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To identify the timing of drowsiness driving warning is the key issue and a bottleneck of onboard drowsiness driving warning technology. Finding a rationale for warning timing using driver’s driving behavior response feature is an innovation. Therefore, after conducting a driving simulator experimen...

Transient Analysis of ZPW-2000 Track Circuit Based on FDTD Interface Method

WANG Zicheng, GUO Jin, ZHANG Yadong, SU Lina, SUN Ningxian, CHEN Mingbao

2019, 54(1): 196-201, 218. doi: 10.3969/j.issn.0258-2724.20180020

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A track circuit performs a transient process when a train enters or departs a section. Therefore, its circuit state can be judged by the transient change of signals at the receiving end. The finite-difference, time-domain (FDTD) is a common numerical solution for the transmission line. However, the ...

Efficient Privacy-Preserving Authentication Protocol for Mobile Cloud Computing Services

XIONG Ling, PENG Daiyuan, PENG Tu, LIANG Hongbin

2019, 54(1): 202-210. doi: 10.3969/j.issn.0258-2724.20170596

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To address the problems of mutual authentication and privacy preservation in mobile cloud computing (MCC) services, an efficient and provably secure privacy-preserving authentication protocol, based on an identity-based signature technique, is proposed for MCC services, achieving authentication with...

Parallel Algorithm for Overlapping Community Detection in Complex Networks

TENG Fei, DAI Rongjie, REN Xiaochun

2019, 54(1): 211-218. doi: 10.3969/j.issn.0258-2724.20160478

[Abstract](572)

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With the increasing size of complex networks, traditional detection methods are difficult to scale to larger networks. This paper proposes a parallel hierarchical link（PHLink） algorithm to discover overlapping communities. By studying the power-law degree distribution of complex networks, we disting...

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2019 Vol. 54, No. 1