西南交通大学学报

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2020, 55(1)

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Key Technologies in Visualized Intelligent Management Platform for Life Cycle of Wind Power Systems

ZHU Qing, ZENG Haowei, XIE Xiao, ZHANG Yeting, JIANG Jie

2020, 55(1): 1-8. doi: 10.3969/j.issn.0258-2724.20180721

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For years, each sector in the wind farm life cycle has used separate management systems, which results poor data sharing and low levels of intelligent automation. It is difficult to achieve comprehensive and efficient management of whole space and full information in wind power systems. To deal with...

Reliability Optimization of Co-phase Power Supply Device Based on Frequency Conversion Control Strategy

CHEN Minwu, TIAN Hang, SONG Yalin, CHEN Ling

2020, 55(1): 9-17. doi: 10.3969/j.issn.0258-2724.20180668

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Co-phase power supply technology can effectively deal with the obstacles in neutral-section passing and power quality common for the traction power supply system. In order to ensure the safe and reliable operation of co-phase power supply systems, the reliability optimization of the co-phase power s...

Recognition Method for Multi-scale Sparse Power Quality Disturbance

ZHU Yunfang, WU Zhiyu, GAO Yan, HOU Yishuang, LIU Zhengjie

2020, 55(1): 18-26. doi: 10.3969/j.issn.0258-2724.20180606

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In the traditional power quality disturbance recognition, there is a large amount of data and disturbance characteristics are dependent on subjective selection. To deal with these problems, a recognition method for multi-scale sparse power quality disturbance is proposed. Firstly, a multi-scale spar...

Traction Load Classification Method Based on Improved Clustering Method

ZHANG Liyan, CHEN Yingyue, HAN Zhengqing

2020, 55(1): 27-33, 40. doi: 10.3969/j.issn.0258-2724.20180513

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In order to obtain more accurate traction load classification, based on a large amount of measured traction load data, an improved fuzzy C-means clustering method is proposed, which can automatically obtain the best classification number. A charged effective coefficient, the maximum value, the avera...

Review on Network Virtualization Simulation Software

WANG Yingshu, WANG Xu, ZUO Yu, LIU Qing, ZHANG Juanjuan, YUAN Shu, YU Fucai

2020, 55(1): 34-40. doi: 10.3969/j.issn.0258-2724.20190556

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Network virtualization simulation software (NVSS) is an integration of network virtualization and virtualization software, serving as an important auxiliary tool for network engineers in learning and training, and researchers in experimental verification. It realizes the virtualization of network eq...

Passenger Flow Prediction for Guangzhou-Zhuhai Intercity Railway Based on SARIMA Model

LI Jie, PENG Qiyuan, YANG Yuxiang

2020, 55(1): 41-51. doi: 10.3969/j.issn.0258-2724.20180617

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To achieve the short-term prediction on the railway passenger flow and analyze the influence of prediction step on prediction accuracy, firstly, the characteristics and variation of passenger flow for Guangzhou-Zhuhai intercity railway were analyzed. Then, considering the passenger flow characterist...

Design Method of Hydraulic Valve Block for Tunnel Boring Machine

ZHANG Huailiang, ZHAO Lina, ZHOU Jingxing

2020, 55(1): 52-59. doi: 10.3969/j.issn.0258-2724.20180072

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In order to improve the flow quality of flow channels in hydraulic valve block under foundation vibration, a simulation model of flow channels under foundation vibration was established based on finite element theory and the correctness of the simulation model was verified. The effects of the differ...

Method of Using Flat Plate as Calibration Tool for Robot Tool Center Point Calibration

HAN Fenglin, LI Peng, TAN Donghe, LI Dan, SHAO Dongshi, YAN Hongzhi

2020, 55(1): 60-67. doi: 10.3969/j.issn.0258-2724.20180807

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To obtain the tool center point (TCP) parameters readily and accurately in the industrial field and reduce the positioning error of robot end tools, a robot TCP calibration method utilizing a flat plate as calibration tool is proposed. The robot TCP parameter calibration model is established under t...

Temperature Rise Characteristic Analysis and Liquid Cooling Structure Design of Lithium Battery

PAN Chaofeng, LIU Bing, CHEN Long, HE Zhigang, HAN Chao

2020, 55(1): 68-75. doi: 10.3969/j.issn.0258-2724.20180241

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Concerning the phenomenon of uneven temperature distribution and excessive temperature of power battery heat generation in electric vehicles, the thermal analysis model of the battery package was established on the basis of thermal physical parameters of the battery and internal resistance at differ...

Temperature Field of in-Wheel Motor Using Coupled Multi-physics Domain Solution

ZHANG Heshan, XU Jin, DENG Zhaoxiang, JIANG Yanjun

2020, 55(1): 76-83, 91. doi: 10.3969/j.issn.0258-2724.20170263

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In order to study the influence of temperature change on the working performance and service life of in-wheel motor for electric vehicles, a coupled multi-physics analysis method is proposed. Firstly, the field-circuit coupling method is used to solve the finite element model of the in-wheel motor a...

Effect of Rolling Direction on Contact Fatigue Damage of CL60 Wheel Steel

HU Yue, LI Qun, LIU Qiyue, GUO Jun, WANG Wenjian

2020, 55(1): 84-91. doi: 10.3969/j.issn.0258-2724.20180073

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In order to investigate the effect of wheel rolling direction on rolling contact fatigue (RCF) damage of wheel steel, the rolling-sliding wear experiments under both unidirectional and bidirectional conditions were carried out on a rolling wear testing apparatus (WR-1, China). The wheel surface dama...

Study on Reinforcement for Fatigue Cracking of Rib-to-Diaphragm Welded Joints of Steel Bridge Deck

ZHANG Qinghua, JIN Tong, LI Jun, BU Yizhi

2020, 55(1): 92-99. doi: 10.3969/j.issn.0258-2724.20170744

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In order to study the reinforcement effects of bolted angle steel on fatigue cracking of the orthotropic steel bridge deck, the full-scale test model was used to study the reinforcement effect of fatigue cracks on the rib-to-diaphragm welded joints. A finite element model with fatigue cracks was est...

Transverse Seismic Pounding Effect and Pounding Reduction of Simply-Supported Girder Bridge for High-Speed Railway

YANG Menggang, MENG Dongliang, WEI Kanghua, QIAO Jiandong

2020, 55(1): 100-108. doi: 10.3969/j.issn.0258-2724.20180277

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A 32 m standard-span simply-supported girder bridge with 7 spans for high-speed railway was used as a prototype to study the effects of the earthquake-induced transverse pounding, as well as the pounding reduction effects of various isolation devices. The actual force-deformation curves of shear key...

Time-Frequency Characteristics of Box-Girder Vibration and Noise Based on Wavelet Transform

ZHANG Xun, ZHAO Yu, RUAN Linghui, LIU Rui, LI Xiaozhen

2020, 55(1): 109-117. doi: 10.3969/j.issn.0258-2724.20170768

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In order to explore time-frequency characteristics of train-induced box-girder vibration and noise, a simply-supported concrete box-girder with a span of 32 m was selected as the case, the vibration and near-field noise of the box-girder slabs were measured, and the signals were processed by using w...

Reconstruction Method of Shear Keys on Existing Bridges Based on Structural Fuse Concept

XU Lueqin, WANG Long, LI Jianzhong, LI Zhongxiong

2020, 55(1): 118-125, 143. doi: 10.3969/j.issn.0258-2724.20180425

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Shear keys in existing bridges are ineffective in controlling the seismic displacement due to the lack of design codes to guide the details of construction and reinforcement. To improve the ability of existing bridges to resist earthquake damage, the reconstruction of shear keys based on the structu...

Analysis of Seismic Fragility and Recoverability of Long-Span Cable-Stayed Bridge

WU Fangwen, MENG Yuanying, CHEN Yue, JI Quanyou, YANG Yuanyuan, WU Zhida

2020, 55(1): 126-133. doi: 10.3969/j.issn.0258-2724.20180449

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To study the seismic capacity of the main tower of cable-stayed bridge under earthquake and evaluate its seismic recoverability, the structural dynamic calculation model was established by the finite element analysis program SPA2000 based on a single-column long-span concrete cable-stayed bridge, th...

Refined Study on 3D Flow Characteristics around Bridge Piers

YANG Wanli, WU Chengwei, ZHU Quanlong, WANG Guangjun

2020, 55(1): 134-143. doi: 10.3969/j.issn.0258-2724.20180335

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In order to investigate into the characteristics and mechanism of the current forces on bridge piers, a refined study on 3D flow around the typical pier model was conducted considering the influence of the free surface. ANSYS FLUENT was employed to address the characteristics of the drag force and l...

Levenberg-Marquardt Algorithm for Orthogonal Fitting of Transition Curves

SONG Zhanfeng, WANG Jian, LI Jun

2020, 55(1): 144-149. doi: 10.3969/j.issn.0258-2724.20190130

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To identify the parameters of transition curves in as-built alignments by measured points, orthogonal least-squares fitting is studied on the basis of the parameter equation of transition curves. First, eigenvalue analysis has clarified that the Gauss-Newton (GN) algorithm usually fails to converge ...

Method of Force-Finding Analysis Based on Ratio Updating for Cable Domes

JIANG Zhengrong, LIU Xiaowei, SHI Kairong, LIN Quanpan

2020, 55(1): 150-157. doi: 10.3969/j.issn.0258-2724.20180201

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In order to determine the prestress distribution of cable domes efficiently, a new method of force-finding analysis based on ratio updating was proposed. In this method, values of cable prestresses are pre-assumed and then constantly adjusted according to the continuously updated ratio of cable pres...

Analysis for Displacement Response Characteristics of Complex Multi-layer Base-Isolated Structure under Near-Field Ground Motion

FANG Dengjia, DU Yongfeng, LIU Chengqing, DENG Youyi

2020, 55(1): 158-166, 192. doi: 10.3969/j.issn.0258-2724.20181038

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In order to study the influence of near-field ground motion characteristic parameters on the seismic displacement response of a super-long complex base-isolated structure, firstly the correlation among 128 near-field ground motion characteristic parameters was analyzed. Then, the near-field ground m...

Static Bearing Capacity Analysis of CFRP-Reinforced Short CHS Steel Tubular Columns under Axial Compression

SHAO Yongbo, ZHU Hongmei, YANG Dongping

2020, 55(1): 167-174. doi: 10.3969/j.issn.0258-2724.20180527

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To predict the ultimate strength of a short circular hollow section (CHS) steel tubular columns reinforced with carbon fibre-reinforced polymer (CFRP), both theoretical and numerical analyses were carried out. In the theoretical analysis, based on equivalent section method, the equations for calcula...

Flexural Behavior of Reinforced Concrete Beams Strengthened with Carbon Fiber Reinforced Polymer under Hydrothermal Environment

JIANG Shenghua, YAO Guowen, LIU Chaoyue, LIU Xiaochun

2020, 55(1): 175-183. doi: 10.3969/j.issn.0258-2724.20170893

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To study the durability of concrete structure strengthened with CFRP(carbon fiber reinforced polymer) under hydrothermal environment, six concrete beams strengthened with CFRP under warm and moisture conditions were used for flexural behavior experiment; the failure mode, bearing capacity, deflectio...

Experimental Study on Seismic Behavior of Resilient Circular Concrete Columns

LIU Zhihua, ZHAO Hua, SUN Yuping, ZHAO Shichun, ZHAO Jun

2020, 55(1): 184-192. doi: 10.3969/j.issn.0258-2724.20180451

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In order to maintain the positive stiffness and small residual deformation of reinforced concrete columns when they are subjected to tremendous earthquakes that exceed the standard set by current codes, a method of using high-strength and low-bond non-prestressed steel strands as longitudinal reinfo...

Effective Diffusion Range of Exponential Fluids Based on Navier-Stokes Equation in Collapse Area

WEN Lei, LUO Zhouquan, QIN Yaguang, WANG Wei, ZHENG Kaihuan

2020, 55(1): 193-201. doi: 10.3969/j.issn.0258-2724.20180331

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In order to study the diffusion range and pressure distribution of cement paste during grouting in the fractured rock mass, based on the deduced Navier-Stokes equation, a single fracture model is established on the COMSOL platform to simulate the flow characteristics of slurry on irregular single fr...

Study on Creep Test of In-situ Scaling Model of Suspension Bridge Tunnel Anchorage

WEN Lina, CHENG Qiangong, CHENG Qiang, GUO Xifeng

2020, 55(1): 202-209. doi: 10.3969/j.issn.0258-2724.20181013

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In order to obtain the creep deformation law of tunnel anchor of Luding Dadu River super-large suspension bridge on Yakang Expressway, creep test of 1∶10 in-situ scale model of tunnel anchor was carried out according to similarity theory. The graded loading test of model anchor was carried out with ...

Main Influencing Factors of Dust Removal Efficiency by Negative Ionization in Tunnel Construction

XU Shiqiang, WANG Mingshan, LI Jie, HU Yaozhou, REN Hongyuan

2020, 55(1): 210-217. doi: 10.3969/j.issn.0258-2724.20180367

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In order to study the influence of dust particle size, particle concentration, ventilation velocity, the working voltage of a negative ion system and its longitudinal installation position on the dust removal efficiency of the negative ion system in tunnel construction, a three-dimensional model of ...

Parameters Quantification of Forchheimer Equation and Critical Point of Transition from Darcian to Non-Darcian Flow

LIU Jian, YANG Qiaoyan, BAI Xue, SONG Kai, LUO Chengjie, SA Yongfang

2020, 55(1): 218-224. doi: 10.3969/j.issn.0258-2724.20180756

[Abstract](674)

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In order to explore the movement law of water flow in rock mass fissures, a fracture seepage flow model was established with real rock mass materials to study the seepage flow state and parameters. The single-fracture seepage flow model was constructed using natural marble blocks, instead of the com...

Biotransformation of Bioethanol from Lignocellulose by High Yield Cellulase-Producing Aspergillus

LIU Yang, QIU Zhongping, MENG Tao, GONG Zhengjun, WANG Dongmei, FAN Chao

2020, 55(1): 225-230. doi: 10.3969/j.issn.0258-2724.20180477

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Biotransformation of bioethanol was innovatively processed with crude enzyme to hydrolyse rice straw from a high-yield cellulase-producing Aspergillus W-10 and by simultaneous saccharification and fermentation (SSF) with Saccharomyces cerevisiae. Hydrolysis and saccharification of pretreated rice st...

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2020 Vol. 55, No. 1