地墙与排桩复合围护体系底板换撑施工技术

摘要

结合工程实例，对钻孔灌注桩+地下连续墙复合围护体系底板换撑方案作了研究，提出了下翻牛腿方案和临时型钢换撑方案，通过比选，在施工中采用了临时型钢换撑方案，指出该方案施工周期短，难度小且经济安全。%Combininf with enfineerinf examples,the paper studies the composite envelope system with diaphrafm wall and bored pile,puts for-ward the down bracket scheme and temporary steel transformation strut scheme,and applies temporary steel transformation strut scheme throufh comparison,and finally points out its advantafes,such as short construction duration,simple construction technolofy,economic and safe as well.