Citation: | WANG Chuanlian, HU Yueqi, LI Pinget al. Safe driving speed threshold on curve section of road under different loading conditions based on TruckSim[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(6): 1337-1346. doi: 10.13700/j.bh.1001-5965.2017.0808(in Chinese) |
In order to investigate the influence of loading conditions and road conditions on safe driving speed threshold on curve section of road, oversize vehicle dynamics model, road scene model and driver control model were established by using TruckSim software. Simulation tests were conducted in terms of the loading quality and road adhesion coefficient, and the contributory factors to vehicle rollover and sideslip on curve section of road and the degree of influence were analyzed. Finally, one curve section on an expressway in Shaanxi Province was taken as an example, and the safe driving speed threshold influenced by two factors was studied. The results indicate that the safe driving speed threshold on curve section decreases with increasing loading quality of freight, and it shows a power function relationship between safe driving speed threshold and loading quality; safe driving speed threshold on the curve section presents a downward trend while the road adhesion coefficient increases from 0.1 to 0.6, and the safe driving speed threshold and road adhesion coefficient show an exponential function relationship; safe driving speed threshold on the curve section remains stable while the road adhesion coefficient increases from 0.6 to 1.1. In accordance with the model simulation analysis results and aimed at overload and over-limited problems, this paper gives some security advice to traffic management departments, stevedores as well as drivers, which can improve the active safety for driving on the curve section of road and provide theoretical and technical support for road safety operation research.
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