非均布动荷载作用下沥青路面剪应力动态响应分析  

Dynamic Response Analysis of the Shear Stress in Asphalt Pavement Under Non-uniform Distributed Dynamic Loads

作　　者：高梦起[1,2] 何杰[2] 王鹏英 

机构地区：[1]河南省交通科学技术研究院有限公司,郑州450006 [2]东南大学交通学院,南京210096 [3]郑州市交通规划勘察设计院,郑州450006

出　　处：《交通运输工程与信息学报》2010年第2期100-104,共5页Journal of Transportation Engineering and Information

基　　金：国家自然科学基金资助(项目批准号:50708020);江苏省自然科学基金资助(BK2007566);"东南大学优秀青年教师资助计划"资助项目

摘　　要：为探求重载货车不同行车速度下沥青面层水平剪应力动态响应规律,结合半刚性基层路面特点,采用层状体系理论,建立一个ANSYS 3-D有限元粘弹性路面结构模型。在施加非均布动荷载情况下进行了非线性求解计算。结果表明,沥青面层内的最大水平剪应力均随行车速度的增加呈先增大后减小的规律,行车速度在20km/h左右时,水平剪应力达到最大,对路面剪切破坏程度最严重。To study the changes and dynamic response in asphalt pavement layers at different truck rules of speeds, a the horizontal shear 3-D finite element stress （FEA） visco-elastic road model was established with the layered theory and the ANSYS software. Then, the changes of horizontal shear stress in the asphalt pavement layers were calculated and analyzed under non-uniform distributed dynamic loads. The results showed that the horizontal shear stress firstly increased and then decreased with the speed increasing at different fiction factors. When the velocity was about 20km/h, the horizontal shear stress reached the maximum, and the asphalt pavement suffered the most serious shear damage.

关 键 词：非均布动荷载 粘弹性路面 水平剪应力 有限元分析 

分 类 号：U416.217[交通运输工程—道路与铁道工程]