耦合和非耦合效应下沥青路面受力对比分析研究  

Different Stress Research of Asphalt Pavement under the Effect of Coupling and Uncoupling

作　　者：易富[1] 金艳[1] 高健[1] 杨宇婷[1] 

机构地区：[1]辽宁工程技术大学土木与交通学院,阜新123000

出　　处：《硅酸盐通报》2015年第3期803-807,共5页Bulletin of the Chinese Ceramic Society

基　　金：辽宁省教育厅科研基金项目(L 2013144);辽宁省百千万人才基金(2011921064)

摘　　要：为了更加深入分析沥青路面在温度场和应力场耦合作用下的变化规律,本文采用修正的Burgers模型作为沥青混合料的本构模型,对双轮标准轴载作用下高速公路沥青路面的应力场和温度场进行了有限元分析,并与非耦合状态下沥青路面受力情况进行对比研究。结果表明:温度和应力耦合作用时,路面的主要设计指标路表竖向位移、底基层底面的水平应力、面层内的剪应力和竖向应力均大于非耦合作用,该研究可以为沥青路面的力学分析及路用性能研究提供有利依据。It is a combination of temperature and stress lead to the occurrence and development of diseases of asphalt pavement. In order to analysis the change rule of asphalt pavement under the coupling effect of the temperature field and stress field, we use the modified Burgers model as constitutive model, analyzing the stress and deformation fields of highway asphalt pavement under a standard wheel axle loads by finite element, and comparing with the coupling condition of asphalt pavement stress distribution. The result shows that relative to the uncoupling, when considering the coupling effect, the road main design index vertical displacement of surface, horizontal stress of sub-basing bottom shear stress of facing and vertical stress are bigger. The research provides beneficial basis for mechanical analysis and road performance research of asphalt pavement.

关 键 词：沥青路面 温度场 应力场 耦合作用 非耦合作用 

分 类 号：U416[交通运输工程—道路与铁道工程]