摘要
针对某基坑地下连续墙遇到深埋污水管导致开口、无法连续施工的情况,采用土体加固和排桩相结合的方法,使之形成土拱,达到应力转移和隔离的目的。利用有限元对应力隔离之后的土体变形及排桩内力性状进行了详细分析,认为排桩数量和加固宽度对控制土体变形起到关键作用,加固范围越大,变形越小。实测数据表明,地下连续墙开口区域的位移小于计算值,结果可为类似工程参考。
While the underground continuous wall of a foundation pit encounters the sewage pipe,the wall need to break off, and the opening produces. To solve the above problems, the paper uses the method of the soil reinforcement and the pile combination, and the soil arch forms between the piles for stress transfer and isolation. By using the finite element, the soil deformation and internal force characteristics of piles are analyzed in detail. The conclusion is that the pile number and soil reinforcement width is the key role to control the soil deformation, and the deformation is smaller along with the greater the scope of consolidation. The measured data shows that the displacement of the opening region in underground continuous wall is less than the calculated value, and the results can be referred to similar projects.
作者
黄伟达
Huang Weida(Fuiian Academy of Building Research, Fuzhou 350025, Fuiian, China;Fujian Key Laboratory of Green Building Technology, Fuzhou 350025, Fujian,China)
出处
《岩土工程技术》
2017年第6期294-297,共4页
Geotechnical Engineering Technique
基金
福建省科技计划项目(2014Y0016)
福建省建设科技研究开发项目(2012K15)
关键词
地下连续墙
污水管
应力隔离
基坑
有限元
underground continuous wall
sewage pipe
stress isolation
foundation pit
finite element
