车辆荷载作用下半刚性基层道路反射裂缝应力分析与处理  

Analysis of Stresses and Processing Method on the Reflection Cracks of Semi-Rigid Base Road Resulting from the Vehicle Loads

作　　者：包龙生[1] 魏喜乐 于玲[1] 陈爱宝 BAO Longsheng WEI Xile YU Ling CHEN Aibao(School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China, 110168 Jinzhou Zhengxing Real Estate, CO. Ltd. , Jinzhou, China, 121013)

机构地区：[1]沈阳建筑大学交通工程学院,辽宁沈阳110168 [2]锦州市正兴置业有限公司,辽宁锦州121013

出　　处：《沈阳建筑大学学报（自然科学版）》2017年第3期458-466,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51078242);住房和城乡建设部科学技术项目(2016-K2-012);沈阳市科学技术基金项目(F16-095-1-00);沈阳市建委科技项目(SJW2016001)

摘　　要：目的为了提高半刚性基层道路的通行能力并延长其使用寿命,对该道路由车辆荷载引起的反射裂缝进行研究,并提出了合理的处理措施.方法应用ABAQUS建立含有裂缝的复合路面有限元模型,分析路面结构中的应力、应变随车辆轴重的变化情况.然后对比分析设置与未设置防裂功能层两种情况下路面结构内的应力变化情况.结果路面结构在增设了防裂功能层后的应力、应变均低于不设功能层时的数值,且下降幅度较为明显,在50%左右.结论提出的处理措施可以有效地减少半刚性基层道路因车辆荷载引起的反射裂缝数量.Reflection cracks caused by vehicle load is studied in this paper ,to improve the traffic capaci- ty ,prolong the service life of the Semi-Rigid Base Road,and put forward measures accord it. The author established the finite dement model of composite pavement with cracks by using the finite element software ABAQUS. This paper analyzed stress and strain of the pavement construction with the change of the vehicles＇ axle-weight. Then,the stress variation in the pavement structure was analyzed and compared in two cases of setting anti-crack function layer or not. After set up the anti-crack function layer ,it has an obviously reduce of the stress and strain,about fifty percent lower than before. The treatment measure proposed by the author can effective reduce the reflection cracks caused by the vehicle loads.

关 键 词：车辆荷载 有限元模拟 防裂功能层 对比分析 

分 类 号：TU997[建筑科学—市政工程]