2016 Vol. 16, No. 1

Display Method:
Calculation method of moisture warping stress for cement concrete pavement slab
ZHANG Xiao, ZHAO Hong-duo, ZHAO Dui-jia, SUN Li-jun
Abstract: In order to analyze the impact of moisture gradient on mechanical properties of cement concrete pavement, the calculation formulas of moisture warping stress for nonhomogeneous infinite pavement slabs subjected to free-rein constrain, axial deformation constraint, bending deformation constraint, ben...
2016, 16(1): 1-7. doi: 10.19818/j.cnki.1671-1637.2016.01.001
Noise characteristics of cement concrete pavement in tunnel based on on-board sound intensity method
LI Bo, ZHANG Zheng-wei, KANG Hong-wei, LI Liang-ying, WANG Feng
Abstract: The noises of expressway concrete pavements and asphalt pavements were tested by the on-board sound intensity(OBSI)method.The test samples were conducted by using statistics products and service solution software(SPSS).In tunnel, A-weighted sound levels and 1/3 octave bands of noise characteristics ...
2016, 16(1): 8-15. doi: 10.19818/j.cnki.1671-1637.2016.01.002
Shearing performances of corrugated steel webs encased with concrete
ZHANG Feng, LI Shu-cai, LI Hong-jiang, YAO Chen, YANG Sheng
Abstract: In order to study the shearing behavior of corrugated steel webs encased with concrete, the nonlinear-refined-numerical finite element model of corrugated steel webs encased with concrete was established, and its validity was verified by using the deflection and strain of test model.The shearing mec...
2016, 16(1): 16-24. doi: 10.19818/j.cnki.1671-1637.2016.01.003
Construction control of cantilever casting of long span reinforced concrete arch bridge
HU Da-lin, CHEN Ding-shi, ZHAO Xiao-you, GONG Jian-ping, LI Ying
Abstract: The structure characteristics of cable-stayed and anchored cantilever casting construction system for the main arch ring of arch bridge were analyzed.The methods to determine the forces of anchored cables in cantilever casting construction were summarized.The advantages, disadvantages, and applicabi...
2016, 16(1): 25-36. doi: 10.19818/j.cnki.1671-1637.2016.01.004
New numerical simulation method of shortwave track irregularity
LI Zai-wei, LEI Xiao-yan, GAO Liang
Abstract: Aiming at the shortwave track irregularity problem, a numerical simulation method based on scattered binary wavelet was proposed.The relationship between ISO 3095 standard spectrum and wavelet coefficients was obtained with ISO 3095 standard spectrum as objective function.The algorithm flow and step...
2016, 16(1): 37-45. doi: 10.19818/j.cnki.1671-1637.2016.01.005
Fast recognition method of rail region based on hue value mutation feature of image
MIN Yong-zhi, YIN Chao, DANG Jian-wu, CHENG Tian-dong
Abstract: The rail boundary points in track inspection image were extracted by detecting the hue value mutation features of different regions in the HSL color space of color images.The rail's edges were determined by the linear fitting of multiple rail boundary points of different bisectors, and then the targ...
2016, 16(1): 46-54. doi: 10.19818/j.cnki.1671-1637.2016.01.006
Calculation of reasonable-longitudinal-continuous length for bed plate of CRTSⅢ slab ballastless track
CAI Xiao-pei, ZHAO Lei, GAO Liang, ZHONG Yang-long, LAU Albert
Abstract: According to the design scheme of CRTSⅢ slab ballastless track on subgrade, the nonlinear interaction between multilayer structures was considered, and the spatial coupled models of track structure with different longitudinal-continuous lengths of bed plate were established based on finite element m...
2016, 16(1): 55-62. doi: 10.19818/j.cnki.1671-1637.2016.01.007
Dynamic characteristics and parameter sensitivities of new cutting subgrade for high-speed railway in expansive soil area
YANG Guo-lin, QIU Ming-ming, YANG Xiao, FANG Yi-he
Abstract: The field vibration test of comprehensive experimental section for new cutting subgrade of Yun-Gui High-Speed Railway in expansive soil area was carried out, the 3Dtrack-subgradebase dynamics model was established by adopting the finite difference software FLAC3 D, and the dynamic responses of new c...
2016, 16(1): 63-72. doi: 10.19818/j.cnki.1671-1637.2016.01.008
Weighted PID control of battery temperature for electric vehicle
QIN Da-tong, HUANG Jing-ying, LIU Yong-gang, HU Ming-hui
Abstract: A two degrees of freedom lumped parameter thermal model of lithium-ion battery for electric vehicle was developed.In order to obtain the real-time thermal responses of battery, the thermal model was combined with vehicle driving dynamics model.The parameters of thermal model were obtained by hybrid ...
2016, 16(1): 73-79. doi: 10.19818/j.cnki.1671-1637.2016.01.009
Performance comparison of backup brake system
ZHU Lu, WANG Xiao-dong, WU Meng-ling, TIAN Chun
Abstract: In order to compare the differences among three kinds of backup brake systems, the braking distance and coupler force were taken as evaluation indexes, and the simulation model of train brake system and the analysis model of performance parameters were built through the cosimulation of AMESim and Si...
2016, 16(1): 80-87. doi: 10.19818/j.cnki.1671-1637.2016.01.010
Time integration algorithm in nonlinear railway vehicle system
YANG Chao, XIAO Shou-ne, ZHU Tao
Abstract: The nonlinear elements existing in railway vehicle system were studied, a corrected explicit method with double time steps was introduced, and the corresponding mathematical expressions were provided.Based on the simplified dynamics models of nonlinear railway vehicle system, five typical nonlinear ...
2016, 16(1): 88-94. doi: 10.19818/j.cnki.1671-1637.2016.01.011
Influence of mechanical sealing surface shape of marine stern shaft on sealing performance
ZHOU Xu-hui, LIU Zheng-lin, MENG Xiang-kun, LIU Jiao
Abstract: In allusion to the unstable performance of marine stern shaft mechanical seal caused by the factors such as marine shaft axis bending, shaft misalignment, the wear of stern bearing, the force of propeller, etc., the influence laws of both spherical and planar sealing surface shapes on sealing perfor...
2016, 16(1): 95-102. doi: 10.19818/j.cnki.1671-1637.2016.01.012
Optimzation of mixed air cargo transportation network
YANG Zhong-zhen, YU Shu-nan, CHEN Gang
Abstract: In order to optimize the air cargo transportation network with the mixed characteristics of point-to-point and hub-and-spoke, a bi-level optimization model was built based on the OD flow of air cargo transportation companies.The objective of upper model was designed to minimize the total transportat...
2016, 16(1): 103-114. doi: 10.19818/j.cnki.1671-1637.2016.01.013
Optimization model of terminal container truck appointment based on coordinated service of inner and outer container trucks
CENG Qing-cheng, ZHANG Xiao-ju, ZHANG Qian
Abstract: Aiming at the congestion problem induced by terminal container trucks arriving together, an optimization model of terminal container truck appointment based on the coordinated service of inner and outer container trucks was proposed, the vacation queuing system was built, the solving method based on...
2016, 16(1): 115-122. doi: 10.19818/j.cnki.1671-1637.2016.01.014
IHSDM freeway accident prediction models
MENG Xiang-hai, HOU Qin-zhong, SHI Yong-yi, JING Lin-peng, ZHENG Lai
Abstract: IHSDM(interactive highway safety design model)was used to predict accidents of 11 types of freeways, and the predicted accident numbers were compared with the actual accident numbers.The basic accident prediction models and the modification coefficients of alignment indexes were obtained, a set of I...
2016, 16(1): 123-132. doi: 10.19818/j.cnki.1671-1637.2016.01.015
Regional traffic state evaluation method based on data visualization
HE Zhao-cheng, ZHOU Ya-qiang, YU Zhi
Abstract: The spatio-temporal accumulation index of traffic congestion was introduced to identify and quantitatively analyze regional traffic operation state.The functional relationship between congestion source and congestion evaluation point was built to construct visual model.The histogram of oriented grad...
2016, 16(1): 133-140. doi: 10.19818/j.cnki.1671-1637.2016.01.016
Investigation of information quantity threshold on combined traffic signs
LIU Xiao-ming, WANG Yu, JIANG Ming, WEI Zhong-hua
Abstract: Aiming at lacking quantitative basis for information quantity threshold of combined traffic signs, combined signs containing guide sign and lane directional sign were designed.The subjects'visual cognition accuracy and reaction time of combined signs were measured.The information quantity threshold ...
2016, 16(1): 141-148. doi: 10.19818/j.cnki.1671-1637.2016.01.017
Comparison of relative navigation methods for large vessel formation
ZHOU Hong-jin, ZHONG Yun-hai, LI Wei
Abstract: A relative navigation model based on the pseudo-range double-difference of navigation satellite was built.Pseudo-range single difference based least square algorithm, pseudo-range double-difference based least square algorithm, pseudo-range single difference based EKF algorithm and pseudo-range doub...
2016, 16(1): 149-158. doi: 10.19818/j.cnki.1671-1637.2016.01.018