2004 Vol. 4, No. 4

Display Method:
Environment protection in application of asphalt mixture
LI Zhu-long, DING Xiao-jun, ZHAO Shu-ceng, WU De-ping
Abstract: In order to control the emission volume of CO2 in the production of asphalt mixture for pavement, this paper introduced the application of medium-sized temperature technology in asphalt mixture, and the application and research of normal temperature asphalt mixture in Japan and Finland, analyzed the...
2004, 4(4): 1-4.
Damage causes of mastic asphalt pavement on orthotropic steel deck plate
CHEN Xian-hua, HUANG Wei, WANG Jian-wei, CHENG Gang
Abstract: This paper investigated the damage conditions of mastic asphalt pavement on orthotropic steel deck plate, analyzed the damage causes, including the properties of pavement materials, mechanical conditions with different truck load, traffic content, and so on. Analysis results indicate that failure of...
2004, 4(4): 5-9.
Subgrade resilience modulus measuring by portable falling weight deflectometer(PFWD)
DUAN Dan-jun, CHA Xu-dong, ZHANG Qi-sen
Abstract: This paper studied the relationships of dynamic elastic modulus with compaction, and moisture content with PFWD. It was pointed that the obtained satisfactory correlations of dynamic elastic modulus with static elastic modulus, compaction with moisture content are over 0.85, the maximum value of dyn...
2004, 4(4): 10-12.
Spreading machine disposing and paving methods of airport pavement asphalt
SHI Bao-hua, CAI Liang-cai, HUANG Bi-bin, SUN Tao
Abstract: Based on the features of spreading machine and incorporating engineering experience, it was pointed out that the spreading machines should be chosen and disposed according to the length and thickness of asphalt covering, the horizontal grade of runway and the productive capacity of asphalt mix machi...
2004, 4(4): 13-16.
Frequency number error and support condition of flexible cable tension
CHEN Chang-song, CHEN Zheng-qing, YAN Dong-huang
Abstract: In order to study the test errors of cable tension due to natural frequency order and support condition, based on dynamical equilibrium of infinitesimal element, the formulas of natural frequency and cable tension were deduced under flexural rigidity. In terms of Ray-Leiy energy method, the influenc...
2004, 4(4): 17-20.
Nonlinear track irregularity forecast model
ZHOU Yu, XU Yu-de, LI Hao-ran
Abstract: Based on nonlinear forecast theory of track irregularity, a forecast model was developed by multiple factor regression analysis with traffic data and inspection data of track inspection car. Future track irregularity development was forecasted using this model. The values of forecast and inspection ...
2004, 4(4): 21-24.
Extrapolation of probabilistic fatigue S-N curves on 16MnR steel weld joint
YANG Bing, ZHAO Yong-xiang, WU Ping-bo, CENG Jing
Abstract: This paper extended the commonly probabilistic curves of 16MnR steel weld joint into long life regime by 2m-1 exponent method according to the fatigue test data in different test conditions. The curves are constructed by Basquin relations, consisting of survival probability-based curves, confidence-...
2004, 4(4): 25-29.
Flexible multibody system dynamics predicting method of high-speed vehicle handling
XIA Zhang-gao
Abstract: In order to evaluate the handling of high-speed vehicle, taking the vehicle with a standard structure as its object of study, and using flexible multibody system dynamics method, this paper founded the subsystem models of steering, suspension, tire, body and the dynamics analysis model of automotive...
2004, 4(4): 30-33.
On-line monitoring and fault diagnosis system for electric system of 08-32 tamper
YING Li-jun, ZHOU Shu-wu, QI Lin, WANG Jing-yuan
Abstract: The railway would not run on schedule if 08-32 tamper takes place electric troubles while it maintains railway in blockading time. For solving the problem, the system of on-line monitoring and fault diagnosis was developed using computer technology and fault diagnosis theory. The function module of ...
2004, 4(4): 34-36.
Automobile rear end collision model on freeway
HOU Zhi-xiang, WU Yi-hu, LIU Zhen-wen, LI He-qing
Abstract: A probability model of automobile rear end collision based on ANFIS(adaptive neural-fuzzy inference systems) was provided, the speed difference of automobiles, the speed of tracing automobile and the distance of automobiles were taken as inputs, and the probability of automobile rear end collision w...
2004, 4(4): 37-39.
Determining method of airfield clearance zone
CAI Liang-cai, SHAO Bin, ZHENG Ru-hai, ZHONG Xiao-lei
Abstract: In order to solve the contradiction of construction development with airfield clearance protection, this paper analyzed the influence of weather condition, navigation equipment, takeoff and landing path on the airfield clearance zone. According to the flight airline theory and those influencing fact...
2004, 4(4): 40-43.
Management decision support system of multiple capacity air traffic flow
ZHANG Ying, HU Ming-hua, PENG Ying
Abstract: This paper analyzed the ground holding method and terminal sequencing method, put forward the core strategy of the system. It was pointed that the delay time is greatly decreased, the traffic flow becomes more fluent after executing the strategy, and the rationality of scheduled flight timetable has...
2004, 4(4): 44-48.
Forecasting method of parking-demand based on capacity-of-network
BAI Yu, XUE Kun, YANG Xiao-guang
Abstract: Based on parking-demand trip O-D prediction method, this paper studied the relationship between capacity-of-network and parking-demand, took capacity-of-network and network service level as restrictions to modify parking-demand trip O-D prediction method, and established the method to forecast parki...
2004, 4(4): 49-52.
Self-judgment and predigested decision-making method of urban parking facilities planning
ZHOU Zhi-yong, CHEN Jun, WANG Wei
Abstract: Using similar coefficient method in fuzzy clustering analysis, six evaluation indices were confined to appraise urban parking facilities planning, how to calculate the indices was given, fuzzy relative evaluation means was applied to express the indices, which are difficult to fix quantify directly....
2004, 4(4): 53-57.
Supply-demand coordination development of urban road traffic system
WEI Lian-yu, MA Yong-feng
Abstract: Based on the supply-demand theory, this paper constructed the evaluation indices of supply-demand system of urban road traffic, proposed a concept of coordination development level of supply-demand system and a quantitative evaluation method of determining the coordination development level. An exam...
2004, 4(4): 58-61.
Planning indices system of urban road network
LU Jian, WANG Wei
Abstract: Based on the analysis of urban road network's quantity and quality, this paper discussed the urban road network planning indices system, put forward that urban road network planning indices system should be divided into two parts, space indices system and traffic quality indices system. Seven space ...
2004, 4(4): 62-67.
Short-term traffic flow prediction methods comparison of road networks
SHI Qi-xin, ZHENG Wei-zhong
Abstract: A large number of techniques have been applied into short-term traffic flow prediction, which can be classified into two groups: statistical models and artificial neural network model. The models and their application were discussed and compared. Several models, including historical average, ARIMA (...
2004, 4(4): 68-71.
Sampling methods of resident trip investigation
SHI Fei, LU Jian, WANG Wei, GE Hong-wei
Abstract: Applying mathematical statistics, this paper studied the characters of random sampling and its excessive random effect on other trip characters, put forward stratified sampling method, researched quota sampling and best distribution sampling. It is recommended that random sampling should be adopted ...
2004, 4(4): 72-75.
Evaluation and decision making method of preference matter element based on TOPSIS
MA Rong-guo, YANG Shen-lin, LI Tie-qiang
Abstract: In order to raise the accurateness of evaluation and decision making, discrease evaluation information loss, this paper put forward a matter element method to compute the related degrees of every scheme matter element with ideal matter element and negative ideal matter element. According to the rela...
2004, 4(4): 76-78.
Organization design process of virtual logistics
WANG Yi-sheng, WANG Feng, JIANG Da-li
Abstract: According to the key factors that should be considered in the organization design process of virtual logistics, this paper developed the organization design process of virtual logistics by IDEF0, gave some tools and methods in relevant processing phase, explained goal establishment, preliminary desi...
2004, 4(4): 79-83.
Genetic algorithm for optimal arrangement of general piece goods
BU Lei, YIN Chuan-zhong, PU Yun
Abstract: In order to make good use of container's loading weight of volume in railway transportation, this paper constructed reasonable coding and fitness function by improved genetic algorithm, according to loading weight, volume and priority. It was found that 42 pieces of goods are loaded into a 10 t cont...
2004, 4(4): 84-87.
Evaluation of international dry bulk shipping market
ZHENG Shi-yuan, YAO Zu-hong
Abstract: This paper studied the evaluation of international dry bulk shipping market by factor analysis, its index system was developed. Through the comparison to baltic freight index, it was pointed that the evaluation result can reflect the main trend of international dry bulk shipping market. The result i...
2004, 4(4): 88-92.
Developing strategies from highway freight station to modern logistic industry
CHENG Ri-sheng
Abstract: The Chinese highway transport industry was divided into three parts: transport corporations, freight stations and freight information markets. The highway freight stations should be transfered to consolidation center, sorting center, transferring center and processing center. The invest strategy of ...
2004, 4(4): 93-96.
Planning evaluation of multipurpose transit smart card system
ZHANG Ning, TAO Zhi-xiang, GUO Xiu-cheng
Abstract: Based on the system planning and evaluation factors of multipurpose transit smart card system, the evaluating model of the system was proposed by AHP. With the practice in Nanjing city, the optimized application arrangement was calculated using the AHP model. The results show that the evaluating mod...
2004, 4(4): 97-101.
Bus travel transit path based on ant algorithm
LI Wen-yong, WANG Wei, CHEN Xue-wu
Abstract: Considering the character of bus passenger travel, a bus travel transit path query algorithm with the least transfer times was brought out, which was based on ant algorithm and Dijkstra algorithm of bus stops query. Using the path selection character of ant looking for food and the principle of refr...
2004, 4(4): 102-105.
Coordination control of crossing pedestrian signal and crossroads signal
ZHENG Zhang-jiang, WANG Wei, CHEN Shu-yan
Abstract: Based on field investigation, the paper analyzed the pedestrian and vehicle traffic in the representative section of ideal artery with timing linear control system theory to optimize the crosswalk and intersection signal timing. After adopting the coordination control design, the mainstream vehicle ...
2004, 4(4): 106-109.
Geographical information system based on ArcView platform
LI Li, ZHOU Mei-yu
Abstract: This paper applied ArcView software and GIS technology to set up rail 3D visual model, developed visual user interface. Applied results show that the system can realize the picture and text reveal of geographical information system and 3D simulation geographical objects to satisfy consumer informati...
2004, 4(4): 110-113.
Heading measure system of differential digital magnetic compass and gyro
LIU Yan, YANG Xin-yong, HUANG Sheng-guo
Abstract: This paper defined DDMC (differential digital magnetic compass), built up this system based on C8051F005, introduced its software and hardware design, discussed its communication circuit. The identification precision of the system is 8°~10°, while identification rate is above 50%, error is below 15%...
2004, 4(4): 114-116.
Precise apparent position calculation of star in navigation
WANG An-guo, JIA Chuan-ying, SUN Peng
Abstract: Based on FK5 and DE405 ephemeris, the paper analyzed the influence of relativity, precession, nutation and aberration on apparent position calculation of star. Astronomy vector treatment was employed. The automatic calculation of star apparent position was realized by program language VC(++). The ca...
2004, 4(4): 117-120.