岩土工程学报2012，Vol.34Issue(2)：355-362,8.
路桥过渡段桩承式加筋路堤现场试验研究
Experimental investigation of geogrid-reinforced and pile-supported embankment at bridge approach
摘要
Abstract
The geogrid-reinforced and pile-supported （GRPS） embankment and the geogrid-reinforced filling technique are employed to treat the bridge approach in loess area so as to reduce the differential settlement and alleviate the bump at the end of the bridge approach. Moreover, the earth pressure on the surfaces above and below the geogrid along the central axis and shoulder of the embankment are measured as well as deformation of the geogrid. The results show that the load on the soil between piles can be reduced effectively due to the soil arching and tensioned membrane effects. In the central axis of the embankment, most of the load is transferred by the soil arching and the tensioned membrane effects, but the tensioned membrane effect is not obvious. At the road shoulders, the tensioned membrane effect increases efficiently and the load is transferred by the soil arching effect together with the tensioned membrane effect. The effect of load transfer is significant at the bridge approach and decreases gradually with the increase of distance from bridge abutment.关键词
桩承式加筋路堤/路桥过渡段/现场试验/土拱效应/张拉膜效应Key words
geogrid-reinforced and pile-supported embankment/bridge approach/field experiment/soil arching effect/tensioned membrane effect分类
建筑与水利引用本文复制引用
郑俊杰,张军,马强,董友扣..路桥过渡段桩承式加筋路堤现场试验研究[J].岩土工程学报,2012,34(2):355-362,8.基金项目
国家自然科学基金项目(50978112):教育部留学回国人员科研启动基金项目(20091341) （50978112）
华中科技大学研究生科技创新基金项目(HF-08-01-2011-240) （HF-08-01-2011-240）
