钢管桩与灌注桩结合支护方式应用探索

混凝土灌注桩在基坑支护中已经得到广泛应用,效果显著;钢管桩作为一种新型的支护方式,近几年应用也越来越多;二者结合应用却缺少实例.为了解决复杂环境中基坑支护的难题,衡水新华地下人防工程在支护设计上采用了钢管桩和钻孔灌注桩相结合的支护方式,取得良好的效果,为以后复杂环境下的基坑支护设计提供了一种新的可选择的支护形式.

Research on Application of Combined Supporting Pattern of Steel Pipe and Cast-in-Place Pile

Abstract The cast-in-place concrete pile is applied widely in foundation pit engineering for its marked effect. And the steel pipe pile is increasingly applied to underground engineering as a new support method in recent years. The application report about combination of the two piles is not found for lack of examples. To solve the problem of the foundation pit support in complex environment, the combined supporting design of steel pipe pile and bored pile was adopted in the underground civil air defense project in Hengshui Xinhua, which achieved good results. The support design could offer ahernatires to support engineering of the foundation pit in the complex environment.