卸载后弧线型地道基坑围护的施工分析  

Construction Analysis for the Foundation Pit Bracing of Arc-type Tunnel after Site Unloading

作　　者：王家东[1] 

机构地区：[1]上海市第七建筑有限公司

出　　处：《上海公路》2009年第3期41-44,共4页Shanghai Highways

摘　　要：深基坑工程一般通过大面积卸载施工区域上皮土方,来缩减基坑开挖深度,进而减少基坑围护工程量,以达到节约施工成本的目的。以虹桥综合交通枢纽内规划EW二路穿越京沪高铁段的地下通道基坑工程卸载施工为对象,总结和分析了在有条件进行场地卸载的情况下,优化弧线型基坑围护施工方案时,需要在地基加固处理、工序施工顺序、施工测量等几方面应注意的事项,供同行参考。In the project of deep foundation pit,the excavation depth is usually shortened by unloading construction region earthwork which may reduces the quantities of foundation pit bracing and the cost.Taking the unloading construction of underground tunnel foundation pit of the EW Roads passing through the Beijing-Shanghai high-speed railway in Hongqiao integrated transport hub as example, the paper summarizes some factors in the foundation reinforcement,construction procedure,construction measuring when optimizing arc-type pit construction plan in the favorable condition of site unloading.

关 键 词：基坑围护 卸载 地基加固 施工测量 

分 类 号：TU753[建筑科学—建筑技术科学]