车路耦合条件下沥青混凝土路面变形特性时域分析

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摘要 Analysis of the vehicle-pavement couple system was mainly based on the linear elastic model in frequency domain considering pavement roughness. The nonlinear dynamic numerical model for the vehicle-pavement coupled system was established using finite element mothed. Using the model, the deformation characteristics of asphalt concrete pavement were studied under the conditions of different pavement roughness, different vehicle speeds, different vehicle loads and different subgrade strength. The pavement roughness was worse and the vibration deformation of the pavement was larger, the max deformation of the C level pavement roughness was 1.31 times than that of the A level pavement roughness. With the faster of the vehicle speed, the deformation of pavement was smaller, but the trend was not obviously. The deformation of pavement increased obviously for overload, and the ratio of the overload reached by 100%, the ratio of deformation increased by 50%~109%. The deformation of pavement increased obviously for the subgrade strength reduction, the subgrade strength was reduced by 28%, and the deformation of the pavement increased by about 15%.

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	许海亮
	任合欢
	何兆才
	何炼

关键词 ： road engineering, pavement structural response, nonlinear model, vehicle-pavement coupled, pavement roughness

Abstract：Analysis of the vehicle-pavement couple system was mainly based on the linear elastic model in frequency domain considering pavement roughness. The nonlinear dynamic numerical model for the vehicle-pavement coupled system was established using finite element mothed. Using the model, the deformation characteristics of asphalt concrete pavement were studied under the conditions of different pavement roughness, different vehicle speeds, different vehicle loads and different subgrade strength. The pavement roughness was worse and the vibration deformation of the pavement was larger, the max deformation of the C level pavement roughness was 1.31 times than that of the A level pavement roughness. With the faster of the vehicle speed, the deformation of pavement was smaller, but the trend was not obviously. The deformation of pavement increased obviously for overload, and the ratio of the overload reached by 100%, the ratio of deformation increased by 50%~109%. The deformation of pavement increased obviously for the subgrade strength reduction, the subgrade strength was reduced by 28%, and the deformation of the pavement increased by about 15%.

Key words： road engineering pavement structural response nonlinear model vehicle-pavement coupled pavement roughness

收稿日期: 2019-01-14

通讯作者: XU Hai-liang E-mail: 635191293@qq.com

引用本文:

许海亮, 任合欢, 何兆才, 何炼. 车路耦合条件下沥青混凝土路面变形特性时域分析[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 13-19.
XU Hai-liang, REN He-huan, HE Zhao-cai, HE Lian. Time-domain Analysis of Deformation Characteristics of Asphalt Concrete Pavement Considering Vehicle-pavement Coupled Effect. Journal of Highway and Transportation Research and Development, 2019, 13(2): 13-19.

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