基于扩展有限元法的加铺应力吸收层对反射裂缝影响浅析  

Effect Analysis of Overlay Stress Absorbing Layer on Reflection Crack Based on Extended Finite Element Method

作　　者：林娟 LIN Juan(Fuzhou Planning&Design Research Institute,Fuzhou 350003,China)

机构地区：[1]福州市规划设计研究院,福建福州350003

出　　处：《中国市政工程》2021年第1期78-82,90,共6页China Municipal Engineering

摘　　要：基于福建某旧路改造工程,借助ABAQUS软件平台,模拟旧混凝土路面加铺沥青混凝土结构层,分析在荷载作用下沥青混凝土加铺层厚度、应力吸收层厚度和模量变化对应力值、弯沉值以及裂缝扩展的影响。研究表明,合理增加沥青混凝土加铺层厚度可有效防治面层反射裂缝,适当加铺应力吸收层可较好防治面层反射裂缝。研究结果可为类似工程提供借鉴。Based on an old road reconstruction project in Fujian,with the help of ABAQUS software platform,the overlay of asphalt concrete structure layer on old concrete pavement is simulated;and the influence of overlay thickness,stress absorbing layer thickness&modulus change on stress value,deflection value&crack propagation under load is analyzed.The results show that increasing the thickness of asphalt concrete overlay can effectively prevent&control the reflective cracks of the surface,and laying stress absorbing layer properly can prevent&control the reflective cracks of the surface,which may provide reference for similar projects.

关 键 词：扩展有限元 沥青混凝土加铺层 应力吸收层 反射裂缝 

分 类 号：U416.217[交通运输工程—道路与铁道工程]