基于应力吸收层的水泥混凝土沥青加铺路面力学特性分析  

Analysis on stress of asphalt overlay on old Portland cement concrete pavement based on the stress absorption layer

作　　者：李侠[1,2] 

机构地区：[1]西安财经学院管理学院,陕西西安710061 [2]长安大学环工学院,陕西西安710054

出　　处：《西安建筑科技大学学报（自然科学版）》2012年第3期420-425,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：高等学校博士点科研基金项目(20090205120008)

摘　　要：为了研究设置应力吸收层后旧水泥混凝土沥青加铺路面结构的力学响应,采用有限元分析方法,建立水泥混凝土加铺路面接缝在最不利温度时的温度-荷载耦合模型,对不同沥青加铺层厚度、模量和不同应力吸收层厚度、模量工况下的温度应力与温度-荷载耦合应力进行研究.根据计算结果,提出了沥青加铺层、应力吸收层的合理厚度范围,并对加铺层与吸收层的模量加以控制.In order to study the mechanic response of asphalt overlay structure which was set wiht stress absorption layer, the finite element methods were adopted to build a thermal-loading coupled model at the position of juncture on overlay ce- ment concrete pavement under the most adverse temperature. Research is carried out on the thermal stress and the ther- mal-loading coupled stress under the condition of different modules and thicknesses of asphalt overlay and stress absorp- tion layer. According to the study, a reasonable thickness range of asphalt overlay and stress absorption layer was presen- ted. At the same time, the modules of asphalt overlay and stress absorption layer should be controlled properly.

关 键 词：水泥混凝土 沥青加铺层 应力吸收层 力学响应 温度应力 温度-荷载耦合应力 

分 类 号：U416.216[交通运输工程—道路与铁道工程]