摘要
通过工程实例,介绍了在无传统换撑(即地下一层楼板)条件下的一种换撑方案,即采用一排钻孔灌注桩作为挡土结构,坑内设置2道钢筋混凝土内支撑,钻孔灌注桩外侧设置2排深层水泥搅拌桩作止水帷幕,同时可防止淤泥挤入。实际开挖证明该换撑做法是安全、可靠的。
With an engineering case, the paper introduced a new support replacement plan when there is no condition for traditional support replacement construction. A row of bored cast-in-place piles are taken as retaining structure, 2 lines of steel concrete inner support in the excavation, 2 rows of deep cement mixing pile outside the piles as water-stop curtain which can prevent silt to get in. It is proved that this support replacement is safe and reliable.
出处
《探矿工程（岩土钻掘工程）》
2009年第12期43-46,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
深基坑支护
换撑
墙板外侧边柱
先行回填土
deep excavation supporting
support replacement
edge column outside wallboard
pre-soil backfill
