微型预制钢管后注浆桩在基坑支护中的应用

The application of micro prefabricated steel pipe post grouting pile in foundation pit support

通过分析某工程的岩土工程及水文地质条件,对该工程的基坑支护设计思路与方案进行了研究,主要阐述了放坡+微型钢管桩+锚杆+挂网喷射混凝土方案的施工方法及各施工工序的注意事项,以实现基坑支护的安全性和经济性。

Through the analysis on the geotechnical engineering and hydrology geology conditions of an engineering, this paper researched the foundation pit support design idea and scheme of the engineering, mainly elaborated the construction method and matters needing attention of grad- ing ＋ micro steel pipe pile ＋ anchor ＋ wire netting sprayed concrete scheme, so as to achieve the safety and economy of foundation pit support.