Journal of Highway and Transportation Research and Development (English Edition): Recent submissions
Now showing items 561-580 of 742
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Research on Ground Penetrating Radar (GPR) Exploration on Subgrade Failure Based on Spectrum Profile
(American Society of Civil Engineers, 2007)Subgrade failure is relative to spectrum signal received by ground penetrating radar. For the practical exploring demand of Beijing road surface, the method to identify hidden diseases in subgrade such as cavity and loose ... -
Study on Problems in Sand Consolidation Measures for the Taklimakan Desert Highway
(American Society of Civil Engineers, 2007)Based on the investigation and survey for many years, it is found out that there are some problems existing in the mechanical anti-sand engineering system, though it basically can guarantee the highway unblocked. The ... -
Study of High Temperature Performance of Asphalt Mastic Based on Dynamic Viscoelastic Mechanics
(American Society of Civil Engineers, 2007)Dynamic frequency sweep and stable flow experiments were conducted on four asphalt mastics consisting of fly ash, limestone, hydrated lime and cement fillers. The influence of different mineral fillers and the ratio of ... -
Researches on Deflection Index of Full-depth Asphalt Pavement Structure in China
(American Society of Civil Engineers, 2007)Considering the deflection can represent the distortion of the subgrade and pavement layers all together, the deflection index is adopted for full depth pavement structure analysis. In China, the deflection formula is ... -
The Method of Restricted Searching Area Optimal Route Guidance Based on Parallel Genetic Algorithm and Neural Network
(American Society of Civil Engineers, 2007)To work out route guidance in gigantic traffic network, the traffic information forecasting method based on Artificial Neural Network is studied in-depth and the time-varied road weight matrixes are constructed, which solve ... -
Mode Choice for the Mass Rapid Transit System Based on Combined Method of DEA and AHP
(American Society of Civil Engineers, 2007)Construction of the mass rapid transit system is of great importance both to rationally utilizing the economical resource and optimizing the overall arrangement of urban land use. However, the decision-making process is ... -
Study on the Application of Dissipative Structure and Entropy Change Theory in Regional Transportation System
(American Society of Civil Engineers, 2007)Regional transportation system is a dissipative structure. Based on the properties of transportation system, average traffic congestion degree of effective road is used as a sequential parameter to describe the process and ... -
Study on Design and Simulation of On-ramp Fuzzy Controller for Urban Freeway
(American Society of Civil Engineers, 2007)On-ramp control is one of the most effective measures to combat traffic congestion of urban freeway. The characteristics of traffic flow and the model of on-ramp control are analyzed, and a fuzzy control measure is put ... -
Modeling of Electric Power Steering System and Research on Control Strategy
(American Society of Civil Engineers, 2007)The advantages of Electric Powered Steering System are summarized and the model of EPS is developed. On the basis of the model, the different control effects of proportion control and proportion-plus-derivative control are ... -
Adaptive Control of the Hybrid Power System in Fuel Cell City Bus
(American Society of Civil Engineers, 2007)For hybrid power system composed of a fuel cell engine and a group of Ni-H batteries, a new control method with a bi-directional power converter is proposed. On the base of analyzing the output characteristic of the fuel ... -
Modeling and Control of Urban Expressway Traffic Flow
(American Society of Civil Engineers, 2007)First, the high-order macroscopic models are briefly reviewed and discussed. Then, a hierarchical control system consisting of three control layers is developed, taking ramp metering as the control measure. Finally, a ... -
Research on Impetus of Purchasing Consortia Based on Related Total Cost
(American Society of Civil Engineers, 2007)By comparing the related total cost before and after the purchasing consortia formation, the impetus of formation is analyzed. Moreover, based on different transportation and storage policies, the formation impetus is ... -
Research and Application Review on CFRP Cables for Cable-stayed Bridges
(American Society of Civil Engineers, 2007)For its excellent characteristics, such as light weight, high strength, good corrosion resistance and outstanding fatigue resistance, the CFRP cables will find wide application for future cable-stayed bridges. The state ... -
Finite Element Modeling of the Tower of Runyang Cable-stayed Bridge Based on Ambient Vibration Test
(American Society of Civil Engineers, 2007)The multi-level model updating method is put forward for finite element modeling of the bridge tower for long-span cable-stayed bridge, which includes model order updating, model structure updating and model parameter ... -
Study on Semi-active Control of Seismic Bend Torsion Coupling for Curved Bridge
(American Society of Civil Engineers, 2007)Theoretical research and earthquake damage investigation indicate that there is bend torsion coupling vibration for curved bridge when earthquake occurs. To reduce the bend torsion coupling seismic response, the approach ... -
Equivalent Stiffness Modulus of Polyester Fiber Reinforced Asphalt Concrete
(American Society of Civil Engineers, 2007)The equations established for fiber reinforced composites by Zhao and Tandon using the theory of micromechanics are used to discuss effective stiffness moduli of fiber reinforced asphalt concrete under low temperature. The ... -
Research on Measurement and Evaluation of Asphalt Pavement Rut Based on Traffic Safety
(American Society of Civil Engineers, 2007)Rutting is one of the major distresses of the expressway pavements in China. At present, rut depth is the only evaluation index for rutting at home and abroad. It can’t show the whole information of rut. A rut-meter is ... -
Experimental Study on Behaviour of Concrete Box Girder Prestressed with External CFRP Tendons
(American Society of Civil Engineers, 2007)A concrete thin-walled box girder prestressed with external CFRP tendons has been made, and tested in the course of CFRP tendons tensing until concrete cracking. Prestressing loss and some behaviors under uniform load such ... -
Discussion of Pin-connected Joints Design Considering Contact
(American Society of Civil Engineers, 2007)Pin-connected joints are characteristic of contacted bearing loads. With no consideration of the contact, the disadvantage for pin-connected joints to bear loads will be overestimated. Based on the Winkler elastic foundation ... -
A Design Method of Optimum Stable Excavating Angle of Rock Slopes Containing Weak Surfaces and Its Application
(American Society of Civil Engineers, 2007)According to the structure characters of rock slopes containing weak surfaces, model of roadbed slope containing weak surfaces is build up, and then a design method based on the limiting equilibrium is established. The ...