摘要
以长平高速公路K94+920.9通道桥改扩建工程为依托,运用FLAC3D软件进行数值模拟,对桩端后注浆桩的沉降特性进行了研究。结果表明:进行桩端后注浆后,桩端土的承载能力得到了很大改善,桩顶沉降较普通桩各级荷载下的沉降减小约40%,计算结果与现场实测结果较吻合。
Based on Changping Expressway Passage Bridge （K94 ＋920. 9） Expansion Project, the FEAC3D software was adopted to make numerical simulation and study the settlement characteristics of pile-end post- grouting pile. The results show that, after pile-end post-grouting, the bearing capacity of the pile end soil has been greatly improved, the settlement of pile top is about 40 % smaller than that of ordinary pile at all levels of loads. The calculated results are consistent with the field test results.
出处
《路基工程》
2016年第6期129-133,共5页
Subgrade Engineering
基金
吉林省交通科技计划项目:钻孔桩桩端后注浆技术应用研究(2011-1-11)
关键词
通道桥
桩端后注浆
沉降量
沉降特性
数值模拟
passage bridge
pile-end post-grouting
settlement amount
settlement characteristics
numerical simulation
