复合土钉技术在汕头某饱和砂性土深基坑支护中的应用

Application of Composite Soil-Nailing Technology in Deep Foundation Excavation Support on Seaside Saturated Sand of Shantou

针对某基坑项目工程特点,就如何在巨厚富水砂层中进行基坑治水及支护进行介绍,在复杂条件下采用深层水泥搅拌桩隔水帷幕、超前微型钢管桩、土钉墙及锚索形成复合支护体来确保基坑的顺利开挖和地下室的构筑,在汕头地区尚属首例,为该地区同类工程提供经验和相关设计思路,对富水砂层基坑支护和开挖具有一定指导意义。

This paper according to the features of the project,how to in the thick rich water sand layer in the positive support for pit,was introduced.Under complicated conditions in the deep cement mixing pile the water curtain and leading micro steel pipe piles,the soil nailed wall and anchor cable form a composite support to ensure the smooth body of foundation pit excavation and the construction of the basement in shantou region is still in the first,for the region to provide experience for similar projects and the related design ideas,rich water sand layer of foundation pit excavation and which is significant.