非轴对称垂直荷载下弹性半空间体理论解及力学分析  

The theoretical solution and mechanical analysis for elastic half-space under asymmetrical loading

作　　者：陈松强 王东升[1] 张瑞[1] 冯德成[1] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090

出　　处：《中国科技论文》2017年第7期806-811,共6页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20132302120053);国家自然科学基金资助项目(51408161)

摘　　要：为反映轮胎实际接地压力形式下路面结构受力状态,以非轴对称层状弹性体系理论一般解为基础,针对非轴对称垂直荷载下弹性半空间体的边界条件,求解荷载函数的Hankel积分变换,完成非轴对称垂直荷载作用下弹性半空间体理论求解,并与圆形均布荷载下弹性半空间体力学响应进行对比分析。结果表明,非轴对称垂直荷载与圆形均布荷载下应力与位移的场分布差异显著,圆形均布荷载下最大拉应变、最大剪应力和最大弯沉值显著提高,表明荷载的非轴对称特性将加剧沥青路面的断裂和变形破坏。In order to reflect the response of pavement structure under the actual form of tire pressure, combining with the Hankel transformed loading function, the analytical solution for elastic half space was completed under the elliptical vertical load based on the general solution of asymmetrical load. There are significant differences in the distribution of stress and displacement. The first principal strain, maximum of shear stress and deflection throughout the pavement structure clearly increased. It was also found that an asymmetric vertical loading would aggravate the fracture and deformation failure potential of asphalt pavement.

关 键 词：沥青路面 弹性半空间体 非轴对称荷载 力学响应理论解 

分 类 号：U416.217[交通运输工程—道路与铁道工程]