水泥混凝土路面沥青加铺层温度应力分析  

Thermal stress analysis of asphalt overlay on cement concrete pavement

作　　者：马庆雷[1] 杨斌[2] 周然 陈栓发[1] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]广西大学土木建筑工程学院,广西南宁530004 [3]济南汇通联合市政工程有限责任公司,山东济南250032

出　　处：《山东大学学报（工学版）》2005年第2期103-106,共4页Journal of Shandong University（Engineering Science）

摘　　要：温度应力是引起水泥混凝土路面沥青加铺层反射裂缝的主要因素之一,当温度降低沥青加铺层变形受阻时,水泥混凝土路面接缝或裂缝处沥青加铺层会因温度应力集中而产生反射裂缝.采用三维有限元方法分析了沥青加铺层的温度应力与降温幅度、加铺层厚度、土工合成材料模量之间的关系,结果表明。Thermal stress is one of the main factors to cause the reflective crack of asphalt overlay on concrete pavement, shrinkage in asphalt overlay is restricted while temperature drop, asphalt overlay at the joint or crack of cement concrete pavement produces thermal stress concentration to cause reflective crack. The 3-D finite element method is used to analyze the relationships of asphalt overlay thermal stress and temperature drop range, overlay height and geosynthetics, the results indicate that some necessary measures should be token in some regions with low temperature and great difference in temperature of day and night so as to resist the bad influence of thermal stress.

关 键 词：水泥混凝土路面 沥青加铺层 反射裂缝 温度应力 三维有限元 

分 类 号：U416.1[交通运输工程—道路与铁道工程]