随机动载作用下沥青路面的动力响应分析

Dynamic Response of Asphalt Pavement under the Random Dynamic Load Caused by Pavement Roughness

为深入了解沥青路面早期损坏的力学行为,研究路面不平度引起随机动荷载作用下沥青路面受力的特性,将车辆随机动载作为输入激励,运用ANSYS软件建立二维有限元模型,对车辆随机动载作用下的动力响应问题进行了理论分析,计算表明在各等级路面条件下,同一路面等级下沥青路面的垂直位移、竖向应力、应变都随着车速的增大有所改变.

In order to further comprehend mechanical behavior of early damage of asphalt pavement,the characteristics of asphalt pavement under the random dynamic load caused by pavement roughness is studied in this paper.Vehicle random dynamic load as input excitation,using the ANSYS program to build two-dimensional model,the dynamic responses were analyzed under the vehicle random dynamic load,and the results showed that vertical displacement and vertical stress and strain of the early damage of asphalt pavement were reduced with vehicle speed increasing in different classification of highway pavement