2018 Vol. 18, No. 5

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Establishment and finite element mesh of 3D mesoscopic stochastic models of concrete
HU Da-lin, ZHANG Li-xing, CHEN Ding-shi
Abstract: The concrete was assumed to be a two-phase composite material of aggregate and mortar.The mathematical boundary conditions and interference judgment of spherical and ellipsoid aggregates and their mixtures were studied, respectively.A stochastic packing algorithm was designed for the spherical and e...
2018, 18(5): 1-11. doi: 10.19818/j.cnki.1671-1637.2018.05.001
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Influence of unbalanced pavement friction on landing taxiing parameters of aircraft
CAI Jing, ZHANG Heng, LI Yue, SUN Rui-qiang
Abstract: A mechanical model of aircraft landing taxiing was established based on the kinematics principle, and the unbalanced pavement friction degree was introduced.On the basis of the in-situ measured pavement friction coefficient and unbalanced friction degree, the variation tendencies of an aircraft's ya...
2018, 18(5): 12-24. doi: 10.19818/j.cnki.1671-1637.2018.05.002
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Fatigue assessment of floorbeam cutout in orthotropic steel bridge deck based on hot-spot stress method
ZHU Zhi-wen, HUANG Yan, LI Jian-peng, RUAN Shi-peng
Abstract: Based on finite element analysis and stress monitoring data at fatigue details under random traffic flows, stress time histories for an area close to a floorbeam cutout of orthotropic steel bridge deck were obtained to analyze the peak stress distribution.Fatigue assessment at a floorbeam cutout was...
2018, 18(5): 25-34. doi: 10.19818/j.cnki.1671-1637.2018.05.003
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Parametric analysis on seismic behavior of integral abutment steel bridge considering SSI
ZHAO Qiu-hong, QI Chao-yang, AN Ze-yu, CHEN Bao-chun
Abstract: A 3D finite element model of integral abutment steel bridge was established by the SAP2000 software, the nonlinear spring elements and damping elements were used to simulate the soil reactions behind the abutment and around the piles under the earthquake action, and the mode, nonlinear time history ...
2018, 18(5): 35-46. doi: 10.19818/j.cnki.1671-1637.2018.05.004
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Extrapolating method of extreme load effects on long-span bridge under actual traffic loads
LU Nai-wei, LIU Yang, XIAO Xin-hui
Abstract: A probabilistic superposition approach was proposed for investigating the extreme load effects of stochastic traffic flows with multiple densities.The approach was utilized to extrapolate the extreme values of vehicle load effects on the long-span bridges using the measured traffic data.The principl...
2018, 18(5): 47-55. doi: 10.19818/j.cnki.1671-1637.2018.05.005
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Flexural behavior experiment of full-scale PC box girder strengthened by composite technique
WANG Shi-chao, WANG Chun-sheng, DUAN Lan, SHEN Jian-cheng, WANG Qian
Abstract: In order to solve the problem of declining structural performance of old concrete girder bridges, a full-scale test was conducted to investigate the flexural behavior of small PC box girders strengthened by the steel plate-concrete composite strengthening (SPCCS) technology.Two full-scale 20 m-span ...
2018, 18(5): 56-65. doi: 10.19818/j.cnki.1671-1637.2018.05.006
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Mechanical performance of jointless retrofitted bridge with hollow-slabs
XU Zhen, CHEN Bao-chun, HUANG Fu-yun, ZHUANG Yi-zhou, HUANG Qing-wei
Abstract: A multi-span bridge with hollow-slabs was retrofitted into a jointless bridge, in which the simple support slabs were converted into the continuous slabs with double row supports and the general abutments were converted into deck-extension abutments, thus, all movable deck joints of the bridge were ...
2018, 18(5): 66-76. doi: 10.19818/j.cnki.1671-1637.2018.05.007
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Calculation method of restoring force model of four-element variable cross-sectional concrete filled steel tubular laced column
OU Zhi-jing, CHEN Sheng-fu, WU Qing-xiong, YUAN Hui-hui
Abstract: The finite element analysis method of seismic performance of four-element variable cross-sectional concrete-filled steel tubular (CFST) laced column was put forward.The specimens were modeled and analyzed by the OpenSEES general program, and the load-displacement hysteretic curves and horizontal pea...
2018, 18(5): 77-89. doi: 10.19818/j.cnki.1671-1637.2018.05.008
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Effect of track comprehensive maintenance on geometry irregularity improvement of ballast track in high-speed railway
MU Dong-sheng, ZHOU Yu, HAN Yan-bin, ZHENG Xiao-feng, KUANG Di-feng
Abstract: According to the track geometry inspection data captured before and after comprehensive maintenance of ballast track in a high-speed railway, the improvements in the geometric irregularity of comprehensive maintenance that consists of large machinery work, artificial fine adjustment, and rail grindi...
2018, 18(5): 90-99. doi: 10.19818/j.cnki.1671-1637.2018.05.009
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Dynamic optimization design of hanging parameters for traction transformer of high-speed train
HE Xiao-long, ZHANG Li-min, ZHANG Fu-bing, LUO Tian-hong
Abstract: A vehicle-equipment rigid-flexible coupling system model with 21 degrees of freedom was proposed in order to optimize the hanging parameters of traction transformer.The new and rapid explicit numerical integration method was used to compute the vibration response of the vehicle and traction transfor...
2018, 18(5): 100-110. doi: 10.19818/j.cnki.1671-1637.2018.05.010
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Suspension stiffness selecting method of elastic suspension equipment under vehicle
ZHU Tao, LEI Cheng, XIAO Shou-ne, YU Jin-peng
Abstract: Taking the low-order elastic vibration, the rigid body vibration and the equipment active vibration of carbody as inputs, a method for rapidly and simply determining the suspension stiffness of elastic equipment was proposed.Under the premise of fully considering the coupling vibration that may occu...
2018, 18(5): 111-118. doi: 10.19818/j.cnki.1671-1637.2018.05.011
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Sliding mode control for ship dynamic positioning based on linear matrix inequality
XUE Han, SHAO Zhe-ping, PAN Jia-cai, FANG Qiong-lin
Abstract: In order to solve the control problem of ship dynamic positioning systems with nonlinear and environmental disturbances, a sliding mode control algorithm based on the linear matrix inequality (LMI) was proposed.The tracking error was designed as a sliding mode function, and a linear matrix inequalit...
2018, 18(5): 119-129. doi: 10.19818/j.cnki.1671-1637.2018.05.012
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Game control of multi-agent damper system for laterally interconnected air suspension
LI Zhong-xing, TANG Wei, HUANG Jian-yu, LU Ying
Abstract: To further improve the ride comfort and handling stability of vehicles equipped with laterally interconnected air suspension (LIAS), on the basis of multi-agent theory and the cooperative game Shapley value principle, a multi-agent damper control system was constructed.The multi-agent vibration abso...
2018, 18(5): 130-139. doi: 10.19818/j.cnki.1671-1637.2018.05.013
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Multi-mass trammel pendulum model of fluid lateral sloshing for tank vehicle
YANG Xiu-jian, XING Yun-xiang, WU Xiang-ji, ZHANG Kun
Abstract: To deeply investigate the lateral dynamics of tank vehicle, the equivalent mechanical model of fluid lateral sloshing for a tank with elliptical (circular) sectional shape was studied.The predicting precision of the trammel pendulum (TP) model was evaluated by the computational fluid dynamics (CFD) ...
2018, 18(5): 140-151. doi: 10.19818/j.cnki.1671-1637.2018.05.014
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Ship scheduling optimization on bulk cargo port considering ship lightening and berth shifting
ZHENG Hong-xing, LIU Bao-li, ZHANG Run, WANG Cui-ping
Abstract: To improve the service level of bulk cargo port and make full use of its existing berth resource, the ship scheduling optimization on bulk cargo ports using ship lightening and berth shifting strategies was studied.The impact of large ship lightening and berth shifting on ship scheduling in a bulk c...
2018, 18(5): 152-164. doi: 10.19818/j.cnki.1671-1637.2018.05.015
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Robust optimization on distributing routes of hazardous materials based on bi-level programming
MA Chang-xi, HE Rui-chun, XIONG Rui-qi
Abstract: To solve the optimization problem for the hazardous materials distributing routes (HMDR) with multi-distribution centers and time windows in uncertain environments, a robust optimization method with robust control parameters was proposed.Comprehensively considering the transportation risk, transport...
2018, 18(5): 165-175. doi: 10.19818/j.cnki.1671-1637.2018.05.016
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Commute activity identification based on spatial and temporal information of transit chaining breaks
JIN Hai-tao, JIN Feng-jun, CHEN Zhuo, WANG Jiao-e, YANG Yu
Abstract: An approach to improve the recognition of transfers, working commutes, and nonworking commutes in smartcard data mining was introduced.The study focus was shifted from the information of transit processes to the durations and displacements between the transit chaining breaks.The probabilities of tra...
2018, 18(5): 176-184. doi: 10.19818/j.cnki.1671-1637.2018.05.017
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Optimization methods for traffic signal control of isolated intersection under rainy weather
LI Yan, NAN Si-rui, MA Jing, ZHOU Wen-hui, CHEN Kuan-min
Abstract: To improve the efficiency of traffic signal control at an isolated intersection under rainy weather, a traffic signal timing method was established by introducing a rainy correction coefficient.The high-resolution video of the isolated intersection under rainy weather was analyzed by using the motio...
2018, 18(5): 185-194. doi: 10.19818/j.cnki.1671-1637.2018.05.018
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Pre-warning system of maritime traffic safety risk in restricted visibility weather
DAI Hou-xing, WU Zhao-lin
Abstract: To enhance the pre-warning applicability and accuracy of maritime traffic safety risk, a pre-warning system in restricted visibility weather of the risk was set up, and it was composed of the risk matrix knowledge base, traffic flow density prediction subsystem and visibility warning subsystem.By co...
2018, 18(5): 195-206. doi: 10.19818/j.cnki.1671-1637.2018.05.019
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