基于应力吸收层的沥青混凝土加铺层结构应力分析  

Stress Analysis Based on Stress Absorbing Layer Old Asphalt Pavement Structure

作　　者：车青森[1] 宋金华[1] 张占华[1] 

机构地区：[1]河北工业大学,天津300401

出　　处：《吉林建筑工程学院学报》2012年第1期27-30,共4页Journal of Jilin Architectural and Civil Engineering

摘　　要：本文通过三维有限元数值模拟方法,对基于应力吸收层的旧沥青混凝土冷再生加铺层结构进行力学分析.研究表明:适当增加加铺层的厚度对防止反射裂缝的产生十分有效;不能用提高加铺层模量的方法来防止反射裂缝;合理的增加冷再生基层的厚度和减小冷再生基层的模量,对防治反射裂缝非常有效;适当提高应力吸收层的厚度对预防反射裂缝效果明显;应力吸收层的模量的提高对预防反射裂缝效果不明显.This thesis applies the 3D finite element method to stress absorbing layer based on old asphalt pavement structure stress analysis.The results showed that the suitable increase of the overlay thickness has great effect on the prevention of the occurrence of reflection cracks;it is not allowed to use the method of increasing the overlay modulus to prevent the reflection cracks;the suitable increase of the recycling base thickness and decrease of modulus have great effect on the prevention of the occurrence of reflection cracks;suitable increase of the thickness of the stress absorption layer has significant effect on the prevention of reflection cracks;the increase of the modulus of the stress absorbing layer has little effect on the prevention of reflection cracks.

关 键 词：耦合应力 三维有限元 应力吸收层 冷再生基层 

分 类 号：TU312.3[建筑科学—结构工程]