• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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  • Chinese Science Citation Database

2021 Vol. 56, No. 4

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A Review of Vulnerable Line Identification in Power Systems
LIU Zhigang, ZHANG Qiao, HE Xiaofeng, FAN Wenli
2021, 56(4): 673-688. doi: 10.3969/j.issn.0258-2724.20200717
[Abstract](708) [FullText HTML] (409) PDF 1867KB(86)
Abstract:
With the further interconnection of the power grid, the scope of blackouts have become more extensive. Identification of vulnerable lines has important theoretical and practical significance for preventing cascading failures and ensuring the safety and stable operation of the system. The current res...
Continuous Power Supply Scheme and Power Flow Algorithm of Traction Cables for Urban Railways
LIU Wei, LIU Xueqing, WANG Hui, LI Qunzhan, LIU Tongtong, PAN Weiguo
2021, 56(4): 689-697. doi: 10.3969/j.issn.0258-2724.20200066
[Abstract](657) [FullText HTML] (355) PDF 1957KB(45)
Abstract:
Continuous power supply scheme of traction cables is explored for urban railways, in which the power runs through the whole line, and two main substations are set with the same phase power supply devices, one for primary use and one for standby. The feeding section distance is modeled and solved in ...
Analysis on Extreme Distance of Power Supply for Urban Rail AC Power Supply System
ZHANG Liyan, YANG Lianghui, HAN Dushuo
2021, 56(4): 698-705. doi: 10.3969/j.issn.0258-2724.20200059
[Abstract](586) [FullText HTML] (304) PDF 2597KB(30)
Abstract:
The power supply distance is an important indicator to measure the power supply capacity of a traction system, and has a practical impact on the stability and economic operation of the system. The urban rail AC power supply system uses the cable structure of the traction network, which has the outst...
Visual Simultaneous Localization and Mapping Algorithm Based on Convolutional Neural Network to Optimize Loop Detection
GUO Lie, GE Pingshu, WANG Xiao, WANG Dongxing
2021, 56(4): 706-712, 768. doi: 10.3969/j.issn.0258-2724.20190723
[Abstract](794) [FullText HTML] (314) PDF 2396KB(54)
Abstract:
Traditional visual SLAM (simultaneous localization and mapping) without loop detection may lead to error accumulation. Even if there exits loop detection, it is unable to be applied to the lightweight applications because of its low accuracy and efficiency. Thus, a visual SLAM with loop detection op...
Comparison of AOA Localization in Ultrashort Wave under Various Azimuth Calculation Methods
MA Fangli, XU Yang, XU Peng
2021, 56(4): 713-719. doi: 10.3969/j.issn.0258-2724.20200014
[Abstract](594) [FullText HTML] (266) PDF 4779KB(27)
Abstract:
Given that azimuth calculation is fundamental to angle-of-arrival (AOA) localization, the spherical approximation method and normal cylindrical projection-plane method for azimuth calculation on geodetic coordinates are proposed firstly. Furthermore, the AOA localization equations based on spherical...
Method of Motor Starting Current Control Based on Hydraulic Pump/Motor Reverse Drive
LIU Huanlong, LI Shun, XIE Chixin
2021, 56(4): 720-729. doi: 10.3969/j.issn.0258-2724.20190727
[Abstract](660) [FullText HTML] (368) PDF 2826KB(11)
Abstract:
Aiming at the short cruising range of the battery rail engineering vehicles (BREVs) and the large starting current of the permanent magnet synchronous motor (PMSM), a new method of controlling the starting current of the PMSM driven by the hydraulic pump/motor was proposed based on the characteristi...
Residual Life Prediction of Mechanical Equipment Based on Feature Learning in Big Data Background
GUO Liang, LI Changgen, GAO Hongli, DONG Xun, XIANG Shoubing
2021, 56(4): 730-735, 768. doi: 10.3969/j.issn.0258-2724.20190528
[Abstract](745) [FullText HTML] (646) PDF 4047KB(124)
Abstract:
For the traditional data-driven methods of remaining useful life prediction, health indicators are generally built with some hand-crafted feature extraction methods. However, in the big data era, hand-crafted feature extraction methods require specific expert knowledge and time-costing. In order to ...
Maintenance Scheduling Model for Road Networks Considering Payment Modes
MAO Xinhua, WANG Jianwei, YUAN Changwei
2021, 56(4): 736-743. doi: 10.3969/j.issn.0258-2724.20200192
[Abstract](381) [FullText HTML] (219) PDF 1969KB(13)
Abstract:
To ensure that the maintenance contractor obtains the maximum present value of revenue, the road network maintenance scheduling problem was explored under different payment modes of the client. First, three payment modes, i.e., time-based payment mode, progress-based payment mode and maintenance-cos...
Collaborative Optimization for Overnight Train Operation and Maintenance Window Setting of High-Speed Railways
XU Chang’an, LI Shengdong, LI Sihan, NI Shaoquan
2021, 56(4): 744-751. doi: 10.3969/j.issn.0258-2724.20191205
[Abstract](555) [FullText HTML] (276) PDF 1918KB(22)
Abstract:
There is a coupling relationship between overnight train operation and maintenance window setting of high-speed railways. Their collaborative optimization contributes to meeting passenger travel demands at night and improves the allocation of railway transportation resources. Taking the corridor-typ...
Deflection Calculation of New Type Composite Box Girder with Corrugated Steel Webs Based on Reddy Theory
WANG Li, LIU Shizhong, LU Wei, NIU Sisheng, MAO Yana
2021, 56(4): 752-759. doi: 10.3969/j.issn.0258-2724.20200377
[Abstract](617) [FullText HTML] (307) PDF 2167KB(24)
Abstract:
In order to accurately calculate the deflection of a new type of composite box girder with corrugated steel webs (CSWs), Reddy high-order theory is used to analyze the slip deformation of the steel-concrete interface and the high-order shear deformation effect of the whole section; the isoparametric...
Lateral Displacement Restrainer of Beam Based on Elastic Deviation Prevention and Plastic Unloading Mechanism
ZHAO Chenggong, ZHAO Renda, JIA Yi, WANG Yongbao, LI Fuhai
2021, 56(4): 760-768. doi: 10.3969/j.issn.0258-2724.20190741
[Abstract](465) [FullText HTML] (220) PDF 2550KB(7)
Abstract:
In order to alleviate the lateral deflection or overturning of the beam under various factors, and improve the rigid blocking defect of the existing anti-offset equipment, a lateral-movement limiting device of beam body based on the elastic anti-deflection and plastic unloading concept is designed b...
Effect of Turbulence Integral Scale on Fluctuating Wind Pressure and Its Distribution Characteristics on Rectangular Upwind Surface
DU Shubi, LI Mingshui, YANG Xiongwei
2021, 56(4): 769-776. doi: 10.3969/j.issn.0258-2724.20190677
[Abstract](675) [FullText HTML] (372) PDF 2958KB(15)
Abstract:
In order to study the influence of turbulence integral scale on the fluctuating wind pressure and its distribution characteristics on the rectangular windward surface of a high-rise building, rectangular models with 2∶1 and 1∶2 width-depth ratios were put in a wind tunnel to obtain statistical featu...
Spatial Distribution Characteristics of Dynamic Displacement of Heavy-Haul Railway Subgrade System under Launching Impact Load
YIN Zihong, ZHU Renzheng, QIU Hongtao, WANG Qingsong
2021, 56(4): 777-784. doi: 10.3969/j.issn.0258-2724.20191106
[Abstract](592) [FullText HTML] (253) PDF 2390KB(20)
Abstract:
To study the spatial distribution characteristics of dynamic response of military heavy-haul railway subgrade, using highly nonlinear analysis program ANSYS/LS-DYNA3D, a 3D explicit dynamic model of a track-subgrade-foundation system was established with the 3D consistent viscous-spring artificial b...
Extension Evaluation on Excavation Safety of Deep Foundation Pit in Sandy Cobble Stratum Based on Entropy Method
WANG Wei, LIU Danna, PENG Di
2021, 56(4): 785-791, 838. doi: 10.3969/j.issn.0258-2724.20200333
[Abstract](618) [FullText HTML] (334) PDF 1813KB(17)
Abstract:
In order to objectively evaluate the safety and stability of deep foundation pit excavation in watery sandy pebble stratum, eight evaluation indexes, such as ground settlement, building settlement and groundwater level, are selected to evaluate the excavation safety according to the structural defor...
Rock Burst Intensity Classification of Lhasa−Linzhi Railway Based on Stress Criterion
WU Fangyin, HE Chuan, WANG Bo, ZHANG Junbo, MENG Wei, LIU Jinsong
2021, 56(4): 792-800. doi: 10.3969/j.issn.0258-2724.20191167
[Abstract](621) [FullText HTML] (379) PDF 2171KB(33)
Abstract:
The rockburst prediction results of a tunnel in the Lhasa−Linzhi railway cannot meet the actual situation on site by applying the existing criteria directly. In order to formulate the rockburst intensity classification scheme and stress criterion for the whole line of the Lhasa−Linzhi railway, the m...
Random Search Method of Fracture Surface for Seismic Stability of Reinforced Retaining Wall
LI Qian, LING Tianqing, HAN Linfeng, ZHANG Ruigang
2021, 56(4): 801-808. doi: 10.3969/j.issn.0258-2724.20200320
[Abstract](427) [FullText HTML] (215) PDF 2390KB(32)
Abstract:
In order to determine the fracture surface location of the reinforced retaining wall, a polyline fracture surfaceform was proposed based on the horizontal slice method. The fracture surface of the reinforced retaining wall is viewed to be composed of several line segments, one connected with another...
Shear Properties of Paleosol Containing Calcareous ConcretionsBased on Ring Shear Tests
JIANG Chengcheng, FAN Wen, YUAN Weina
2021, 56(4): 809-817. doi: 10.3969/j.issn.0258-2724.20190951
[Abstract](635) [FullText HTML] (300) PDF 2421KB(16)
Abstract:
Paleosol containing calcareous concretion is widely distributed in the shear zone of loess landslides and affects the shear failure characteristics of landslides. Based on ring shear tests, the shear characteristics of paleosol with different contents of calcareous concretions under different normal...
Spatial Development Characteristics of Post-Fire Debris Flow in Bajiaolou Town
YANG Ying, HU Xiewen, WANG Yan, JIN Tao, CAO Xichao, HAN Mei
2021, 56(4): 818-827. doi: 10.3969/j.issn.0258-2724.20200015
[Abstract](467) [FullText HTML] (235) PDF 2389KB(18)
Abstract:
As a special type of debris flows closely relevant to forest fire, the generation of post-fire debris flow often shows a spatial variation. It is of great significance to analyze the spatial development characteristics and its influencing factors for hazard mitigation and reduction. By means of fiel...
State of the Art in Connection of Vertically Distributed Reinforcements for Precast Shear Wall
ZHANG Shiqian, CHEN Yueshi, LIU Yanan, MA Xinxu, LIAO Xiandong, XIAO Xuwen
2021, 56(4): 828-838. doi: 10.3969/j.issn.0258-2724.20191064
[Abstract](529) [FullText HTML] (322) PDF 2067KB(15)
Abstract:
Precast concrete shear wall structure is one of the most common structures for China’s high-rise residential buildings. Reliable vertical connection is critical for the structure to ensure safety. According to the number of vertically distribution reinforcement connections or lap joints (connection ...
Moisture Susceptibility of SBS and Coarse Crumb Rubber Composite Modified Asphalt Permeable Mixture
XIAO Feipeng, ZONG Qidi, WANG Jingang, CHEN Jun, LIU Ji
2021, 56(4): 839-846. doi: 10.3969/j.issn.0258-2724.20191116
[Abstract](524) [FullText HTML] (222) PDF 1841KB(10)
Abstract:
Permeable asphalt concrete (PAC) possesses good capacity of drainage and noise reduction due to its large porosity. Nevertheless, it is prone to suffer water damage. Coarse crumb rubber (CCR) and styrene-butadiene-styrene block copolymer (SBS) were used to prepare composite modified asphalt. Freeze-...
Strain Rate Sensitivity of Porous Cotton-Phenolic Bearing Retainer
ZHANG Yafeng, ZHANG Shaohua, ZHOU Gang, ZHANG Jiyang, QING Tao, ZHOU Ningning
2021, 56(4): 847-852, 863. doi: 10.3969/j.issn.0258-2724.20190457
[Abstract](519) [FullText HTML] (260) PDF 2362KB(14)
Abstract:
In order to study the strain rate sensitivity of porous cotton cloth-phenolic bearing retainer, the hardness and elastic modulus of the porous cotton cloth-phenolic bearing retainer were measured by nanoindenter when the strain rate ranged from 0.01 s−1 to 0.05 s−1. And then the viscoelastic propert...
Experimental Study on Deformation Behavior of Polypropylene Fiber Reinforced Concrete Beams
LI Fuhai, HE Xiaoyunfeng, WU Haonan, JIANG Yilin, WANG Yibin, HU Dinghan
2021, 56(4): 853-863. doi: 10.3969/j.issn.0258-2724.20190959
[Abstract](575) [FullText HTML] (320) PDF 2958KB(12)
Abstract:
In order to explore the difference in deformation behaviors of polypropylene engineered cementitious composite (PP-ECC) beam and reinforced concrete (RC) beam, bending resistance tests were performed on four PP-ECC beams and four RC beams using two loading systems, i.e., step loading and cyclic load...
Simulation of Ⅰ - Ⅱ Mixed Mode Cracking Behavior of Ultra-Dense Asphalt Concrete
DU Jianhuan, REN Dongya, HUANG Yangquan, AI Changfa, QIU Yanjun
2021, 56(4): 864-871. doi: 10.3969/j.issn.0258-2724.20190988
[Abstract](573) [FullText HTML] (287) PDF 2172KB(23)
Abstract:
This work aims to study the propagation behavior of Ⅰ - Ⅱ mixed mode micro-cracks in the ultra-dense asphalt concrete in cold regions. Based on the Eshelby equivalent inclusion theory and the maximum circumferential stress fracture criterion, the relationship between the declination angle β and the...
Influence of Wheelset Installation Deflection Angle on Dynamic Characteristics of High-Speed Vehicles Crossing Switch
CHEN Rong, WANG Xuetong, CHEN Jiayin, DING Ye, XU Jingmang
2021, 56(4): 872-882. doi: 10.3969/j.issn.0258-2724.20190535
[Abstract](523) [FullText HTML] (288) PDF 3161KB(43)
Abstract:
The initial deflection angle of high-speed trains caused by inaccurate positioning sharply can aggravate wheel-rail contact relationships and affect traffic safety, especially when passing through weak areas such as turnouts. In order to study the dynamic performance of vehicles passing through high...
Calculation Method of Hertz Normal Contact Stiffness
GUAN Qinghua, ZHAO Xin, WEN Zefeng, JIN Xuesong
2021, 56(4): 883-888. doi: 10.3969/j.issn.0258-2724.20210015
[Abstract](1057) [FullText HTML] (2118) PDF 1964KB(528)
Abstract:
Elastic contact deformation between the wheel and rail is pivotal in the computation of the wheel-rail contact force in the vehicle-track coupled dynamics. Based on the Hertz contact theory, the nonlinear contact stiffness is used to depict the relation of the wheel-rail normal contact force and the...
Mechanical Properties of Tension-Torsion Coupling in Aluminum Conductor Steel Reinforced
ZHANG Long, HUANG Jue, ZHONG Yongli, YAN Zhitao
2021, 56(4): 889-896, 904. doi: 10.3969/j.issn.0258-2724.20200076
[Abstract](641) [FullText HTML] (332) PDF 2705KB(16)
Abstract:
The torsion parameter of the conductor is one of its basic mechanical properties. Moreover, the tension-torsioncoupling effect of iced transmission lines will greatly affect the accuracy of galloping analysis. To analyze this effect, the torsional test was carried out for the typical 7-strand alumin...
Evaluation of Train Passenger Interface Design Based on Analytic Hierarchy Process with Independent Weight Method
HE Sijun, ZHI Jinyi
2021, 56(4): 897-904. doi: 10.3969/j.issn.0258-2724.20190586
[Abstract](513) [FullText HTML] (250) PDF 1707KB(23)
Abstract:
In order to overcome the limitations of the existing evaluation model of high-speed train passenger interface, such as single index, subjective randomness of weighting method and lack of quantitative analysis. Firstly, a satisfaction survey was conducted on the new type double deck high-speed test s...

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