人工挖孔桩、水泥土搅拌桩复合支护的应用  

Application of the Composite Retaining from Manual Hole Digging Pile and Cement Mixing Pile

作　　者：杨永康[1] 张季超[1] 

机构地区：[1]广州大学土木工程学院,广州510006

出　　处：《地下空间与工程学报》2010年第A01期1484-1487,共4页Chinese Journal of Underground Space and Engineering

基　　金：国家"十一五"科技支撑计划资助项目(2006BAJ27B05)

摘　　要：在富水性较大的砂层中实施人工挖孔桩,极易发生塌孔。本文通过工程实例,介绍了人工挖孔桩与水泥土搅拌桩复合支护在含水砂层的应用。充分发挥了人工挖孔桩施工速度快、造价低和水泥土搅拌桩防渗性好的优点。利用水泥土搅拌桩作为止水帷幕,能较好的控制含水砂层对人工挖孔桩施工的影响,成功地克服了人工挖孔桩在施工中容易发生塌孔的缺点,使人工挖孔桩达到较高的承载力,确保基坑支护的安全,提高了施工进度,并取得了良好的经济效益。It is easy to find collapsed hole for implementing the manual hole digging piles in the sand layer with water abundance. In this paper, application of the composite retaining of manual hole digging pile and cement mixing pile is introduced with an engineering example, giving full play to the rapid construction and low cost of manual hole digging pile and taking full advantage of good anti-seepage of cement mixing pile. Using cement mixing pile as water-stop curtain, the influence of the construction of manual hole digging pile in the water - bearing sand layer could be better controlled. The defects of the manual hole digging pile as easy hole collapse in the construction were success-fully overcome, which makes the manual hole digging pile one with high bearing capacity. It ensures the safety of foundation pit support and improves the construction progress and achieves good economic results.

关 键 词：人工挖孔桩 水泥土搅拌桩 基坑支护 止水帷幕 

分 类 号：TU473.1[建筑科学—结构工程]