郑东新区土钉墙加微型钢管桩基坑支护技术

Application of Micro-steel Pipe Pile in Deep Foundation Excavation Retaining and Protection

摘要:

根据郑东新区基坑工程采用土钉加微型钢管桩成功支护的实例，详细介绍了土钉与微型钢管桩相结合的复合土钉墙支护中微型钢管桩的作用机理，促进了该项支护技术在工程中更广泛的应用。

关键词:复合土钉墙;微型钢管桩;基坑支护;郑东新区

Abstract:

According to the successful field case of the foundation pit engineering of Zhengdong new district, the paper introduced the mechanism of micro-steel pipe pile in composite soil nailing support with combination of soil nailing and micro-steel pipe pile, which promoted wide application of this technology in deep excavation engineering.

Key words:composite soil nailing wall; micro-steel pipe pile; retaining and protecting for foundation excavation