津文公路沥青路面反射裂缝的原因分析  

Reasons of reflection crack of asphalt pavement on Jinwen Highway

作　　者：龚能飞[1] 李自林[1] 王雪松[1] 

机构地区：[1]天津城市建设学院土木工程系,天津300384

出　　处：《天津城市建设学院学报》2005年第4期246-249,共4页Journal of Tianjin Institute of Urban Construction

摘　　要：以有限元法为基础,利用ANSYS软件仿真计算出了津文公路沥青混凝土路面基层在标准轴栽和温度场单独和共同作用下的最大拉应力,并与基层容许拉应力进行比较,得出了津文公路沥青路面纵、横向裂缝都是由最大拉应力引起的结论,从而找出了津文公路沥青混凝土路面产生反射裂缝的原因,这无论对理论研究还是对实际工程都有着重要的参考价值．Based on finite element method, maximal tension stresses of asphalt pavement grass root under standard axial load and temperature field respectively and jointly are calculated by software ANSYS and are compared with tolerable tension stresses. It is concluded that maximal tension stress brings longitudinal and transverse crack of semi-rigid asphalt pavement. Consequently reasons of reflection crack of semi-rigid asphalt pavement are found out. It has important reference value both in the theory research and the practical project.

关 键 词：有限元法 半刚性基层 温度应力 荷载应力 反射裂缝 

分 类 号：U416.223[交通运输工程—道路与铁道工程]