2016 Vol. 16, No. 2

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Mechanical responses of Boeing 747 running on runways
WANG Xing-tao, CHEN Jian-feng, YE Guan-bao, YANG Dong, XUE Jian-feng
Abstract: Based on the large amounts of measured strains and deflections of runway pavement at Denver International Airport, the main characteristics of deflections and strains at different positions of pavement were analyzed when Boeing 747 was running on runway, and the load transfer capacities of different...
2016, 16(2): 1-9. doi: 10.19818/j.cnki.1671-1637.2016.02.001
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Mechanical property of early-strength water-containing unsaturated polyurethane concrete
JIANG Kai, SU Qian, FENG Xu
Abstract: To solve the problem of poor workability, fast curing and molding difficulty of common polyurethane concrete, a new water-containing unsaturated polyurethane concrete was proposed according to the requirement of high standards for aggregate in common polymer concrete.The mechanical properties of wat...
2016, 16(2): 10-17. doi: 10.19818/j.cnki.1671-1637.2016.02.002
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Finite element simulation of inside-outside temperature gradient and thermal stress for abutment mass concrete
SUN Zeng-zhi, TIAN Jun-zhuang, SHI Qiang, LIU Wei, CHEN Hua-xin, XU Qin-wu, ZHANG Ben
Abstract: Aimed at the earlier temperature cracks of mass concrete during construction, a 3D finite element model of mass concrete was built based on the abutment of Laoshangou Highway Bridge in Inner Mongolia, and the effects of content of fly ash, pouring temperature, environmental temperature, and maintena...
2016, 16(2): 18-26. doi: 10.19818/j.cnki.1671-1637.2016.02.003
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Translation control model and optimization method of immersed tube under action of water flow
LI Jun-jun, YANG Xiao-jun, LI Yun, XIAO Ying-jie
Abstract: Aiming at the translation control of immersed tube under the action of water flow, the resultant force and resultant moment of tugboats were analyzed based on the mathematical description, the calculation equations of tug moment in four quadrants were unified, the translation control model of immers...
2016, 16(2): 27-36. doi: 10.19818/j.cnki.1671-1637.2016.02.004
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Improved fuzzy method of removing abnormal spike data from track's geometric irregularity of high-speed railway
LIU Jin-chao, LI Guo-qing, SUN Shan-chao, ZHAO Gang, GUO Jian-feng
Abstract: According to the mutation property of abnormal spike data for track's geometric irregularity of high-speed railway, an improved fuzzy method of removing abnormal spike data was designed.The point with unexpectedly increasing or decreasing forward difference was defined as the starting point of abnor...
2016, 16(2): 37-45. doi: 10.19818/j.cnki.1671-1637.2016.02.005
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Effects of spallation on rail thermo-elasto-plasticity in wheel-rail sliding contact
LIU Yang, JIANG Shuo, WU Ya-ping, DUAN Zhi-dong, WANG Liang-bi
Abstract: A finite element model with rail spallations in wheel-rail sliding contact was established by using the finite element software ANSYS, the material nonlinearity was considered, the impact behaviors of wheel-rail contact were calculated when the wheels passed through the rail spallations, and the inf...
2016, 16(2): 46-55. doi: 10.19818/j.cnki.1671-1637.2016.02.006
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Friction and wear behavior of carbon strip/contact wire
HU Yan, DONG Bing-jie, HUANG Hai, CHEN Guang-xiong, WU Guang-ning, GAO Guo-qiang
Abstract: The friction and wear tests of pure carbon strip/Cu-Ag alloy contact wire were conducted on a ring-block type tester.When the electric current was 250 A and the relative sliding speed was 160-350 km·h-1, the running condition of carbon strip/contact wire of pantograph-catenary systems for high-speed...
2016, 16(2): 56-63. doi: 10.19818/j.cnki.1671-1637.2016.02.007
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Solving method of fatigue parameters of vehicle structures based on projection in spherical direction cosine group
YANG Bing, LIAO Zhen, MA Bai-quan, XIAO Shou-ne, YANG Guang-wu, ZHU Tao
Abstract: In the traditional projection method, the maximum principal stress was assumed to be the maximum tensile stress in advance, and the tension/compression properties of principal stress were not taken into account in the projection process.To improve the above inadequacies, a solving method of fatigue ...
2016, 16(2): 64-71. doi: 10.19818/j.cnki.1671-1637.2016.02.008
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Electrostatic monitoring of gearbox's lubricating oil system
LI Xin, ZUO Hong-fu, CAI Jing
Abstract: The lubricating oil electrostatic monitoring system that was built by a new type 3 499.5 kW gearbox test rig for the wear condition monitoring of gearbox in ground test, was used to complete the full flow abrasive particle electrostatic monitoring test for the lubricating oil systems of gearboxes.Th...
2016, 16(2): 72-81. doi: 10.19818/j.cnki.1671-1637.2016.02.009
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Simulation of crane ship's ballast system based on well cluster theory
DONG Zhi-hui, HAN Duan-feng, LIN Xiao-jie, YUAN Li-hao, ZAN Ying-fei
Abstract: The virtual well cluster system and pipe network structure model of crane ship's ballast system were established, the calculation methods of node's water head and flow rate were analyzed, the calculation equation of pressure drop loss of pipe was researched, and the open degrees of valves and the sp...
2016, 16(2): 82-89. doi: 10.19818/j.cnki.1671-1637.2016.02.010
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Bayesian network model for intelligent recognition of typical compartment fire
XIE Tian-hua, LIN Yan, YANG Zu-yao, JIN Liang-an
Abstract: Based on advanced fire sensors, the Bayesian network model of recognizing fire size and category intelligently was established, six fire characteristic parameters including upper temperature, lower temperature, CO concentration, CO2 concentration, O2concentration and light obscuration were considere...
2016, 16(2): 90-99. doi: 10.19818/j.cnki.1671-1637.2016.02.011
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Impact of adjusting airspace structure on arrival traffic flow in terminal area
ZHANG Hong-hai, LIAO Zhi-hua, ZHANG Qi-qian, ZHANG Xiang-yu
Abstract: The airspace network model in terminal area was built according to the airspace operation rules in terminal area by the network theory.Air traffic flow following model and holding model were built based on aircraft microcosmic behaviors.Simulation test was carried out based on NetLogo simulation pla...
2016, 16(2): 100-108. doi: 10.19818/j.cnki.1671-1637.2016.02.012
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Optimization model of arrival and departure resource allocation in terminal area
WAN Li-li, HU Ming-hua, TIAN Yong, ZHANG Si
Abstract: In order to improve the operation efficiency of terminal area and reduce the flight delay, some factors such as airspace capacity and safety interval were considered, the minimum total flight fuel consumption, balance arrival fix holding time and minimum total flight delay were taken as optimization...
2016, 16(2): 109-117. doi: 10.19818/j.cnki.1671-1637.2016.02.013
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Optimization model of energy-efficient driving for train in urban rail transit based on particle swarm algorithm
HUANG You-neng, GONG Shao-feng, CAO Yuan, CHEN Lei
Abstract: In order to reduce the interstation operation energy consumption of train in urban rail transit, the interstation energy-efficient driving strategy of train was studied.On the basis of considering speed limit and gradient, a energy-efficient optimization model with the constraint of trip time was es...
2016, 16(2): 118-124. doi: 10.19818/j.cnki.1671-1637.2016.02.014
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Dynamics model of airdrop process for air transportation cargo
SUN Xiu-xia, XU Guang-zhi, LIU Ri, DONG Wen-han, QI Peng-chun
Abstract: In view of the status that the modeling condition of transport aircraft dynamic model in airdrop process for air transportation cargo was too much simplified, which was far away from the real airdrop project, the current airdrop process dynamic models and their applicabilities were systematic resear...
2016, 16(2): 125-131. doi: 10.19818/j.cnki.1671-1637.2016.02.015
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Combined optimization model of bus-only lane location and transit route network
LU Xiao-lin, YU Jie, ZOU Nan
Abstract: The combined optimization design idea of simultaneously adjusting bus-only lane location and transit route network based on transit corridor was proposed, and two-level optimization model was designed to find the optimal combined design approach of bus-only lane location and transit route network.Th...
2016, 16(2): 132-142. doi: 10.19818/j.cnki.1671-1637.2016.02.016
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Prediction method of OD travel time based on driver's route choice preference
SUN Jian, ZHANG Ying, ZHANG Chun
Abstract: Based on about three million data of more than 3 000 floating cars in Shenzhen City of Guangzhou Province, geographic information system (GIS) technology was used as main tool, the representative Futian and Luohu Districts were used as study areas, and the expansion radii of different OD pairs were ...
2016, 16(2): 143-149. doi: 10.19818/j.cnki.1671-1637.2016.02.017
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Coordinated control method of ramps based on automatic tracking dynamic critical occupancy
XU Kun, CHAI Gan, LI Qing-quan, GUO Jian-hua, LI Xiao-da
Abstract: In order to solve the problems of traffic congestion in mainline confluence area and the on-ramp queue overspill for freeway, a coordinated control method of ramps was proposed. Based on the traffic statuses in mainline confluence area and the on-ramp queue lengths, the real-time number of coordinat...
2016, 16(2): 150-158. doi: 10.19818/j.cnki.1671-1637.2016.02.018
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