Journal of Highway and Transportation Research and Development (English Edition): Recent submissions
Now showing items 381-400 of 742
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Research on the Road Bearing Capacity Based on Real-Time Data
(American Society of Civil Engineers, 2013)To represent the road network operation effectively, a model for road bearing capacity (the product of speed and flow) is proposed, and the reliability of road network is also evaluated based on the mass traffic data with ... -
Analysis Developing Mechanism of Highways and Transportation Using the Theory of Increasing Returns to Scale against the Background of MFOZ
(American Society of Civil Engineers, 2014)This study aims to analyze the theory mechanism behind MFOZ (main functional areas zone) and investigates MFOZ’s effect on high ways and transportation. This study adopts the classic theory of increasing returns to scale ... -
Test and Study on the Long-Age Performance of Cement Concrete Pavement Material
(American Society of Civil Engineers, 2014)Experimental research is conducted to determine the long—age statistical parameters of road pavement properties such as flexural strength, flexural elastic modulus, compressive strength, and splitting strength after ... -
Analysis of External Water Pressure on the Support and Lining of Deep Mountain Tunnels below High Water Tables
(American Society of Civil Engineers, 2014)To protect the environment and to minimize the water pressure on a tunnel lining, the controlled drainage principle is proposed for deep mountain tunnels below high water tables. The mechanical characteristics of tunnel ... -
Distribution Characteristics of Dynamic Deflection Basins of Distressed Asphalt Pavements
(American Society of Civil Engineers, 2013)The objective of this study was to discuss the distribution features of dynamic deflection basins of distressed asphalt pavements using the dynamic finite element method. Based on the results obtained by systematic analysis, ... -
Effect of Water to Cement Ratio on Autogenous Shrinkage of Pavement Cement Concrete and Its Mechanism Analysis
(American Society of Civil Engineers, 2014)The autogenous shrinkage of pavement concrete with different water to cement ratios are measured in an experimental setup, and these samples’ gradation and pore structure characteristics are analyzed by a mercury intrusion ... -
Study on the Salt Scaling Resistance of Pavement Cement Concrete
(American Society of Civil Engineers, 2014)The single-side salt-freeze test was used to optimize the concrete mix design for improving the resistance of concrete to salt scaling. The results show that the resistance of concrete to salt scaling improves with decreasing ... -
An Automatic Recognition Approach for Traffic Congestion States Based on Traffic Video
(American Society of Civil Engineers, 2014)With the increasing demand for traffic information services as well as the extensive deployment of traffic video surveillance, there is a critical need for realizing automatic identification of congestion state with traffic ... -
Exploratory Experimental Study on Fatigue Prestress Loss of Prestressed Concrete Beams
(American Society of Civil Engineers, 2014)To study the fatigue prestress loss of prestressed concrete beams, four bonded post-tensioned bonded concrete simple supported beams were designed and constructed for constant-amplitude fatigue load displacement tests. ... -
Drivers’ Peripheral Risk Perception Evaluation Indexes and Threshold Division
(American Society of Civil Engineers, 2014)First, the importance of drivers’ peripheral risk perception ability to traffic safety is discussed. Second, the detection of peripheral risk perception ability is put forward and its evaluation indexes are established. ... -
Analysis of Transverse Crack on Top Slab of Prestressed Concrete Box Girder
(American Society of Civil Engineers, 2013)According to the construction characteristics and the specialties of stress distribution in the top slab of a prestressed concrete box girder bridge, two improvements on the submodel method have been made on the basis of ... -
Evaluation of IEEE 802. 11p in Vehicular Communication via Simulation
(American Society of Civil Engineers, 2014)IEEE 802. 11p, which is a fundamental protocol of dedicated short—range communication in intelligent transportation systems, is evaluated in this work. The relationship of IEEE 802. 11p with other protocols in the layered ... -
Integrated Producer-Distributor-Retailer Inventory Model for Cold Chain Items
(American Society of Civil Engineers, 2013)An integrated cold chain inventory model of a manufacturer, a distributor, and multiple retailers in a finite horizon is established. The three-echelon model assumes that the demand rate is a time-varying function and that ... -
Identification of Damage in Cantilever Retaining Wall Based on Flexibility-difference Mean Curvature
(American Society of Civil Engineers, 2014)To solve the problem of identification damage in a cantilever retaining wall, a damage identification method for such a wall, based on the flexibility-difference mean curvature, is proposed. The concept of mean curvature ... -
Analysis of the Factors Affecting Freight Transportation Energy Consumption Based on LMDI
(American Society of Civil Engineers, 2013)An energy consumption logarithmic mean divisia index decomposition model is built and applied to quantitatively analyze the effects of structure, energy consumption intensity, and turnover of freight transportation on ... -
A Method to Determine Relative Vehicle Positioning for Safety Warning
(American Society of Civil Engineers, 2014)Determining relative vehicle positioning for vehicle safety warning services requires high level of accuracy. Positioning based on general satellite information has a large margin of error due to cost constraints. This ... -
Some Theoretical Discussion on High-grade Highway Asphalt Pavement Maintenance Quality Evaluation Method
(American Society of Civil Engineers, 2006)A new maintenance quality evaluation system for high-grade highway is put forward. An analytical hierarchy process is used to establish suitable distress conversion factor. The riding quality index model is revised based ... -
Deformation Behavior of Topographic Unsymmetrical Loaded Tunnels and Their Pre-Reinforcements after Excavation
(American Society of Civil Engineers, 2013)This study used FLAC to simulate the excavation of unsymmetrical loaded tunnels with various transversal gradients, surrounding rock grades, and thicknesses of side covering soil by considering all factors that affect these ... -
Light and Dark Adaption Times Based on Pupil Area Variation at Entrance and Exit Areas of Highway Tunnels
(American Society of Civil Engineers, 2014)The sharp variation of illumination at the entrance and exit of highway tunnels causes difficulty in the visual adaptation of drivers and may even lead to accidents. Therefore, ascertaining the light and dark adaption time ... -
An Optimization Method of Signal Control for a Four-Leg Roundabout Based on the Single Release Method
(American Society of Civil Engineers, 2014)A single release method for four-leg roundabouts is proposed. To completely use the time and space resources of roundabouts from the aspects of adjacent entrances and T-type storage spaces of the circulating lane, two types ...