循环荷载下软基土工格室加筋再生沥青路面基层性能研究
Study on Performance of Soft Foundation Geocell Reinforced Recycled Asphalt Pavement Base under Cyclic Load
田海宁 1杨杰2
作者信息
- 1. 中国公路工程咨询集团有限公司,北京 110000
- 2. 公路工程咨询集团有限公司,北京 110000
- 折叠
摘要
为验证土工格室加筋再生沥青路面(RAP)基底的性能及其优势,在循环荷载下对土工格室加筋RAP基础的薄弱基层进行试验研究.对厚度0.30 m未加筋路段和厚度分别为0.15、0.23、0.30m的加筋土工格室路段,监测基底和路基界面处的表面变形、垂直应力以及土工格室的应变.结果表明:土工格室加筋RAP基础具有更小的永久变形,界面处的垂直应力明显减小;与未加筋截面相比,在75mm的永久变形下,土工格室0.15、0.23、0.30 m加筋RAP基础截面的寿命分别提高了 6.4、3.6、19.4倍.
Abstract
In order to verify the performance and advantages of geocell reinforced recycled asphalt pavement(RAP)base,the weak base of geocell reinforced RAP foundation was studied under cyclic load.The surface deformation,vertical stress and strain of the geocell at the interface between the base and the subgrade were monitored on unreinforced section with a thickness of 0.30 m and a reinforced geocell section with a thickness of 0.15,0.23,0.30 m.The results show that the geocell reinforced RAP foundation has less permanent deformation and the vertical stress at the interface is obviously reduced.Compared with the unreinforced section,the life of the 0.15,0.23,0.30 m reinforced RAP base section of the geocell is increased by 6.4,3.6,19.4 times respectively under the permanent deformation of 75 mm.
关键词
加筋RAP基底/土工格室/循环荷载/沥青路面/使用寿命/软弱地基Key words
reinforced RAP base/geocell/cyclic load/asphalt pavement/service life/soft foundation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据