2009 Vol. 9, No. 5

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Evaluation indices and methods of performances of preventive maintenance materials spraying on asphalt pavement
ZHANG Chao, WANG Chun-qing, YANG Shu-xiang, WANG Yu-shun
Abstract: In order to take advantage of the function of preventive maintenance materials spraying on asphalt pavement, five types of maintenance materials were studied in laboratory to establish their reasonable evaluation indices and evaluation methods according to their performance requirements, such as ant...
2009, 9(5): 1-6. doi: 10.19818/j.cnki.1671-1637.2009.05.001
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Study of influence factors on tendons-soil interface characteristic
LING Tian-qing, ZHOU Bin, WU Chun-bo, ZHENG Zhi-neng
Abstract: A rib-reinforced slope in expressway's widening engineering was designed, in which holistic and unilateral polyethylene geogrid and steel-plastic composite geobelt were taken as enhancement materials and sand with fine-grained soil was taken as fill.The friction performance of tendons-soil interface...
2009, 9(5): 7-12. doi: 10.19818/j.cnki.1671-1637.2009.05.002
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Practical evaluation method of component reliability for existing concrete bridge
YAN Lei, LU: Ying-zhao, HE Shuan-hai, JIANG Jing
Abstract: In order to realize the rapid assessment of the reliability of existing concrete bridge, a loading effect probability model considering evaluation base period and the modification factor of live load was established.A classification evaluation criterion of component's bearing capacity was put forwar...
2009, 9(5): 13-19. doi: 10.19818/j.cnki.1671-1637.2009.05.003
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Spatial dynamic analysis of isolated bridges subjected to near-fault ground motion
WANG Tong-ning, LIU Jian-xin, YU Yong-bo
Abstract: With nonlinear dynamic time-history method, 3D dynamic responses of isolated bridge and non-isolated bridge were analyzed.Through comparing the dynamic responses of isolate bridge under the excitations of earthquakes with different frequency spectrums, the dynamic characteristic of isolated bridge w...
2009, 9(5): 20-25, 31. doi: 10.19818/j.cnki.1671-1637.2009.05.004
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Distribution property of induced current for rail
WU Guang-ning, LEI Dong, DONG An-ping, WANG Wan-gang, AI Bing
Abstract: The mathematical model of induced current for rail was deduced by using infinitesimal method.On the basis of the real-time synchronous testing data of the Da-Qin Railway, the formation mechanism, distribution characteristic, influencing factors of induced current and its influence on rail voltage we...
2009, 9(5): 26-31. doi: 10.19818/j.cnki.1671-1637.2009.05.005
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Hunting motion and bifurcation behavior of six-axle locomotive based on continuation method
GAO Xue-jun, LI Ying-hui, GAO Qing
Abstract: A six-axle locomotive with simple nonlinearities was taken as the study object.The creep forces and the flange forces between wheels and rails in rolling contact were decided by the Vermeulen-Johnson creep force laws and piecewise function respectively.The hunting motion and bifurcation behavior of ...
2009, 9(5): 32-36. doi: 10.19818/j.cnki.1671-1637.2009.05.006
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Modeling and dynamics simulation of vehicle with linear induction motor
LIU Bin-bin, CENG Jing, LUO Ren, WU Ping-bo
Abstract: In order to research the dynamics performance of linear-motor metro vehicle and the suspension characteristics of linear induction motor(LIM), the classical electromagnetic mechanics model and finite element model of LIM, and the multibody dynamics model of the vehicle were established.The longitudi...
2009, 9(5): 37-43. doi: 10.19818/j.cnki.1671-1637.2009.05.007
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Control and test of vehicle semi-active suspension based on wheelbase preview
BEI Shao-yi, YUAN Chuan-yi, FENG Jun-ping
Abstract: In order to study the influence of wheelbase preview control technology on the performance of semi-active suspension system, a half-vehicle semi-active suspension model based on wheelbase preview was established. Neural networks and PID control theory were utilized, the control algorithm of single n...
2009, 9(5): 44-48. doi: 10.19818/j.cnki.1671-1637.2009.05.008
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Optimization method of suspension parameters for articulated vehicle based on ride comfort and road-friendliness
ZHENG Zhong-lang, LU: Peng-min
Abstract: In order to investigate the influence of articulated vehicle's suspension system on ride comfort and road-friendliness and reasonably choose suspension parameters, a 7D dynamics model of 4-axle articulated vehicle was established.Taking the vertical acceleration of tractor and the dynamic load of ev...
2009, 9(5): 49-54. doi: 10.19818/j.cnki.1671-1637.2009.05.009
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Numerical simulation of engine bleeding brake
LUO Fu-qiang, HANG Jin, HE Ren
Abstract: In order to investigate the working process of engine bleeding brake, a numerical simulation model was built by computational fluid dynamics software Fluent. Its prescision was tested by using pressure curves. The pressure and flowfield of cylinder under bleeding brake were calculated. It is pointed...
2009, 9(5): 55-61. doi: 10.19818/j.cnki.1671-1637.2009.05.010
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Image feature extraction from wavelet scalogram based on kernel principle component analysis
SUN Li-ping, CHEN Guo, TAN Zhen-zhen
Abstract: The scalogram image features of unbalance, misalignment, rub-impact and oil whirl fault were analyzed, and a new feature extraction method from the wavelet scalogram of fault signals was put forward based on kernel principle component analysis(KPCA).By using ZT-3 multi-functional rotor test bed, 32 ...
2009, 9(5): 62-66. doi: 10.19818/j.cnki.1671-1637.2009.05.011
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Planning method of basic road netwok based on ArcGIS
HU Xiao, WU Qun-qi, CHEN Xue, LU Xin-wei, JIANG Jing
Abstract: In order to sovle the bottleneck problem of road transportation of China, the scopes of main road network and basic road network in current road network.The influence of the construction expense and ground-occupied cost of highway, transportation cost, the service efficiency of road network on basic...
2009, 9(5): 67-72. doi: 10.19818/j.cnki.1671-1637.2009.05.012
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Process neural network modeling for real time short-term traffic flow prediction
SONG Guo-jie, HU Cheng, XIE Kun-qing, PENG Rui
Abstract: In order to fully utilize the spatio-temporal process characteristic of traffic flow and predict traffic flow in real time, both process neural network and the online learning technology of data stream were imported into short-term traffic prediction. Considering the inherent traffic features of dai...
2009, 9(5): 73-77. doi: 10.19818/j.cnki.1671-1637.2009.05.013
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Hybrid evacuation population estimation model based on fuzzy logic and discrete choice model
AN Shi, CUI Jian-xun, WANG Jian
Abstract: In order to predict the personnel decision behaviors in potential dangerous areas about participating evacuation or not reasonably, a hybrid model was presented based on fuzzy logic and discrete choice model, which could reflect the influencing factors and degrees for evacuation decision behavior.Th...
2009, 9(5): 78-82. doi: 10.19818/j.cnki.1671-1637.2009.05.014
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Calculation model of inland waterway transit capacity based on ship-following theory
ZHU Jun, ZHANG Wei
Abstract: In order to make sure the scale and layout of inland waterway reasonably, the connotation of waterway transit capacity was analyzed. The functional relationship between space headway and vessel velocity was studied by using optimization principle and nonlinear shipfollowing theory, and the calculati...
2009, 9(5): 83-87. doi: 10.19818/j.cnki.1671-1637.2009.05.015
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Grey residual error model of highway traffic accident forecast
LI Gang, HUANG Tong-yuan, YAN He, HUANG Xi-yue
Abstract: Grey residual error model (GREM) was proposed to improve the prediction accuracy of highway traffic accidents with high randomicity. GREM was used to depict the accident prediction values piecewise with the linear superposition of multiple exponential functions, and it overcomed the shortcomings of ...
2009, 9(5): 88-93. doi: 10.19818/j.cnki.1671-1637.2009.05.016
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Multifactor prediction model for traffic accident based on grey-radial basis function neural network
LIU Zhao-hui
Abstract: In order to realize the traffic accident prediction under various road factors, a muhifactor prediction model based on grey-radial basis funetion(RBF) neural network was put forward, which combined grey system theory with neural network theory. Grey theory could improve the utilization of available ...
2009, 9(5): 94-98. doi: 10.19818/j.cnki.1671-1637.2009.05.017
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Dynamic congestion pricing model of combined travel with elastic demand in multi-class network
ZHANG Hua-xin
Abstract: The dynamic congestion pricing problem of combined travel was studied in multi-class network with elastic demand by using dynamic transportation assignment theory and stochastic utility theory. The assumptions that all users were homogeneous and total travel demands were all the same were released. ...
2009, 9(5): 99-105. doi: 10.19818/j.cnki.1671-1637.2009.05.018
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Calculation method for transit period of railway freight under speed-raising condition
ZHU Chang-feng, LI Yin-zhen
Abstract: The problems existing in present calculation methods of transit period were analyzed, the daily average running tariff kilometer of each kind of freight transport product was analyzed under speed-raising condition, and its statistical results were examined by adopting χ2 testing method.A new transit...
2009, 9(5): 106-110. doi: 10.19818/j.cnki.1671-1637.2009.05.019
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Multi-attribute combinatorial auction model and algorithm for container shipping service
YANG Hua-long, DONG Fang, ZHENG Bin, JI Ming-jun
Abstract: In order to solve the problem of high transaction cost in container shipping service, the combinatorial auction approach of container shipping service was pointed out.Freight rate, carrier's service quality, reputation and network coverage capacity were selected as criteria to determine the combinat...
2009, 9(5): 111-115. doi: 10.19818/j.cnki.1671-1637.2009.05.020
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Driver's conflict avoidance decision model based on preemptive level
XIAO Yong-jian, YANG Jian-guo, WANG Zhao-an
Abstract: Vehicles' crossing behaviors were analyzed from the perspective of conflict avoidance, their decision rules during crossing process were described by using field graph tool, and a driver's conflict avoidance decision model based on preemptive level was introduced, which was different with the conven...
2009, 9(5): 116-120. doi: 10.19818/j.cnki.1671-1637.2009.05.021
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Factor analysis and fuzzy clustering of driver behavior pattern
ZHANG Lei, WANG Jian-qiang, YANG Fu-rui, LI Ke-qiang
Abstract: In order to study driver pattern and population clustering feature, driver behavior self-reported investigation for normal drivers was conducted with standardized driver behavior questionnaire(DBQ), and its validity and reliability of the questionnaire were verified based on statistics analysis.Driv...
2009, 9(5): 121-126. doi: 10.19818/j.cnki.1671-1637.2009.05.022
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