波动荷载下的柔性基层沥青路面受力分析  

Stress analysis of flexible base asphalt pavement under fluctuating load

作　　者：高建红 杨圣春 GAO Jianhong;YANG Shengchun(Civil Engineering School, Inner Mongolia University of Science and Technology, Baotou 014010, China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2021年第3期303-306,共4页Journal of Inner Mongolia University of Science and Technology

基　　金：内蒙古自治区自然科学基金资助项目(2018LH05017).

摘　　要：针对现行规范采用静载带来的不足,建立3D模型施加动载并进行瞬态分析,得到沥青路面在动载下的等效应力时程曲线,揭示出:动载对路面结构的影响较静载复杂;等效应力总是在荷载到达该点位时才达到峰值,荷载离开后,迅速降低趋于零;路表受荷载影响最显著,从路表向下越深,影响越小,但影响规律不变.In view of the deficiency of static load in current specifications,the ANSYS was used to build the three-dimensional model and to carry out transient analysis.The Von Mises equivalent stress time-history curves of asphalt pavement under half wave sinusoidal load were obtained,revealing that the effect of dynamic load on equivalent stress of pavement structure was complex.The point equivalent stress always reaches its peak value when the load reaches this point.After the load leaves,it decreases rapidly to zero.Pavement surface is most significantly affected by load.The deeper the pavement surface is,the smaller the impact is,but the influence law remains unchanged.

关 键 词：半波正弦荷载 沥青路面 mises等效应力 

分 类 号：U416.217[交通运输工程—道路与铁道工程]