2016 Vol. 16, No. 5

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Micro-crack propagation behavior of pavement concrete subjected to coupling effect of fatigue load and freezing-thawing cycles
GUO Yin-chuan, SHEN Ai-qin, HE Tian-qin, ZHOU Sheng-bo
Abstract: In order to quantitatively characterize and analyze the evolution laws of pavement concrete internal cracks under the coupling effect of fatigue load and freezing-thawing cycles, the SEM and the morphological image segmentation method were used to extract the micro-crack patterns, the Image-Pro Plus...
2016, 16(5): 1-9. doi: 10.19818/j.cnki.1671-1637.2016.05.001
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New design method of supplemented surface for airport turnoff taxiway
TAN Zhi-ming, YAO Yao, CHEN Jing-liang
Abstract: In order to simplify the design methods of supplemented surface bend on airport, the corresponding differential equation was established based on the turning track of landing gear tire when the plane glided on the runway, the gliding track was divided into two stages to solve the equation: nose whee...
2016, 16(5): 10-16. doi: 10.19818/j.cnki.1671-1637.2016.05.002
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Mechanical property of segmental tower of cable-stayed bridge
CHEN Kang-ming, WU Qing-xiong, HUANG Han-hui
Abstract: Based on the segmental tower of Waitan Bridge in Ningbo City, the axial compressive loading experiment of 1∶3.34scaled-model was conducted by using the prestressed steel strand self-balanced loading mode, and the force transferring route, mechanical characteristics, actual bearing capacity and local...
2016, 16(5): 17-29. doi: 10.19818/j.cnki.1671-1637.2016.05.003
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Modeling and simulation of railway vehicle wheel considering thermo-mechanical coupling
WEN Yong-peng, XU Xiao-jun, SHANG Hui-lin, LI Qiong
Abstract: Urban railway vehicle wheel was taken as research object, and an S-plate wheel model was established.The features of structural stress and thermal stress of wheel under different abrasions were investigated respectively by using FEM, the effects of thermo-mechanical coupling in the structure field a...
2016, 16(5): 30-41. doi: 10.19818/j.cnki.1671-1637.2016.05.004
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FEA of vibration response tolerance of traction transformer for high-speed train
YU Jin-peng, SONG Qing-peng, ZHANG Ming-yuan, ZHANG Ji-wang, LIU Xiao-xia, ZHANG Li-min
Abstract: In order to ensure the structure safety of lower body equipment for high-speed train, based on the simulation calculation method of vibration response tolerance and the Von Mises stress yield criterion, the vibration response capacities of high-speed train traction transformer under linear and nonli...
2016, 16(5): 42-48. doi: 10.19818/j.cnki.1671-1637.2016.05.005
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Evolution of wheel wear and dynamics performance of heavy haul freight car
LI Heng-li, LI Fei, WANG Xin-rui, YANG Ji-zhen
Abstract: The vehicle dynamics model considering wheel wear process was established based on a multi-body dynamics software of SIMPACK.The program of wheel/rail iterative automatic computation was programmed.Vehicle dynamics model, wheel/rail contact model, wheel/rail wear model, wheel/rail profile update and...
2016, 16(5): 49-56. doi: 10.19818/j.cnki.1671-1637.2016.05.006
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Effect of ridgeline strengthening in thin-walled structure
ZHENG Yu-qing, ZHU Xi-chan, HU Qiang, LIU Jin
Abstract: The theoretical expressions of mean crushing force, energy absorbing prediction and ridgeline strengthening(RS)effect of thin-walled RS square tube were respectively derived out based on the ideal folding element model of square tube, the energy dissipation decomposition method during its plastic de...
2016, 16(5): 57-65. doi: 10.19818/j.cnki.1671-1637.2016.05.007
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Locking control of hydraulic torque converter
HUI Ji-zhuang, GUO Yun-xin, ZHENG Heng-yu, ZHANG Ze-yu, HU Hao
Abstract: A type of engineering vehicle was used as research object, its characteristics of working condition were considered, and the common locking points at different throttle openings were calculated and selected based on the locking control principle.Based on throttle opening and turbine speed, brake sig...
2016, 16(5): 66-73. doi: 10.19818/j.cnki.1671-1637.2016.05.008
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Receding horizon optimization of en route flight conflict resolution strategy
TANG Xin-min, CHEN Ping, LI Bo
Abstract: Aiming at conflict resolution problem of two aircrafts on fixed airway, the static single optimal resolution strategy based on adjusting course angle and ground speed was analyzed, the uncertain factors such as speed disturbance possibly existing in aircraft flying process were considered, and a dyn...
2016, 16(5): 74-82. doi: 10.19818/j.cnki.1671-1637.2016.05.009
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Phase-state identification of traffic flow in terminal area incorporated with prior experience clustering
YUAN Li-gang, HU Ming-hua, ZHANG Hong-hai, MA Yong
Abstract: The traffic flow in terminal area was taken as research object, and the characteristics of traffic flow were defined and extracted based on the result of trajectory spectral clustering.The relationship of characteristics and phase-state transition law of traffic flow were analyzed to reveal three ph...
2016, 16(5): 83-94. doi: 10.19818/j.cnki.1671-1637.2016.05.010
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Trailer pick-up tractor routing problem with timeliness requirement and solving
LI Hong-qi, ZHAO Wen-cong, LI Yan-ran
Abstract: Aiming at trailer pick-up tractor routing problem with timeliness requirement, fulltruck load transportation and many to many transportation demand were taken as basic characteristics, CO_2 emissions per ton-kilometer of freight transportation was taken as objective function, and a mixed integer pro...
2016, 16(5): 95-102. doi: 10.19818/j.cnki.1671-1637.2016.05.011
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Optimization on tractor-and-trailer transportation scheduling with uncertain empty-trailer tasks
YANG Zhen-hua, YANG Guang-min, XU Qi, GUO Shu-juan, JIN Zhi-hong
Abstract: In actual road network, the optimization model on tractor-and-trailer transportation scheduling with uncertain empty-trailer tasks was built.A two-stage heuristic algorithm was designed to solve the model.At the first stage, the transportation scheme of empty-trailer task was decided by two strategi...
2016, 16(5): 103-111. doi: 10.19818/j.cnki.1671-1637.2016.05.012
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Arterial coordination control optimization and application
QU Da-yi, WAN Meng-fei, WANG Zi-lin, XU Xiang-hua, WANG Jin-zhan
Abstract: The internal mechanism of arterial coordination control was analyzed based on the arrival characteristics of traffic flow at adjacent signal intersections.According to the queue state at downstream intersection, considering the constraint condition that signal state was green light when head and tai...
2016, 16(5): 112-121. doi: 10.19818/j.cnki.1671-1637.2016.05.013
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Traffic sign recognition method based on graphical model and convolutional neural network
LIU Zhan-wen, ZHAO Xiang-mo, LI Qiang, SHEN Chao, WANG Jiao-jiao
Abstract: In order to improve the recognition robustness of traffic sign, a recognition method of traffic sign based on graphical model and convolutional neural network(CNN)was proposed, and aapplication-oriented recognition system of traffic sign based on the regions with convolutional neural network(R-CNN)w...
2016, 16(5): 122-131. doi: 10.19818/j.cnki.1671-1637.2016.05.014
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Application of BDS in western low-density railway lines
SHANGGUAN Wei, YUAN Zhong-yang, CAI Bo-gen, WANG Jian, LIU Jiang
Abstract: Considering the application requirements of low-density, low-cost and high-reliability of western railway lines, the integrated positioning technology of Beidou satellite navigation system and the inertial navigation system was studied, and the requirement of continuous and seamless positioning of t...
2016, 16(5): 132-141. doi: 10.19818/j.cnki.1671-1637.2016.05.015
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Discriminating method of abnormal dynamic information in AIS messages
LIU Xing-long, CHU Xiu-min, MA Feng, LEI Jin-yu
Abstract: Aiming at the abnormal dynamic information in ship automatic identification system(AIS)messages, a recognition approach based on probabilistic inference with four steps including prior knowledge extraction, evidence modeling, evidence combination and weight coefficient optimization was proposed.Like...
2016, 16(5): 142-150. doi: 10.19818/j.cnki.1671-1637.2016.05.016
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Optimization model signal priority time threshold of tram
ZHOU Yang-fan, JIA Shun-ping, CHEN Shao-kuan, WEI Wei
Abstract: Vehicle delay and intersection saturation were taken as constraint conditions, early green and extended green priority strategies were used, and the model of solving signal priority time threshold of tram was built.The influence of tram length was considered, and the model was verified through real ...
2016, 16(5): 151-158. doi: 10.19818/j.cnki.1671-1637.2016.05.017
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