钢管微桩+锚杆在狭窄场地基坑支护中的应用

Application of Micro Steel Pipe Pile+Anchor Technology in Foundation Pit Support in Narrow Site

摘要:

在城市建设或工业建筑的改扩建中，经常在有限狭窄场地开挖基坑，为保护基坑周边建筑物和坑内施工作业的安全，基坑边坡必须得到安全可靠的支护。利用钢管微桩+锚杆联合支护体系能很好地解决有限狭窄场地的基坑支护问题。通过2个工程实例，阐述了钢管微桩+锚杆联合支护体系设计思路、设计及施工注意事项。

关键词:钢管微桩;锚杆;狭窄场地;基坑支护

Abstract:

The foundation pit excavation in narrow site is very common in reconstruction and expansion of urban construction and industrial buildings. The safe and reliable support of excavation is necessary to ensure the safety of the surrounding buildings and the operation in the excavation. Micro steel pipe pile + anchor combined supporting system can effectively support the excavation. By 2 engineering cases, the paper described the combined supporting system about the design idea, specific design and the attentions in construction.

Key words:micro steel pipe pile; anchor; narrow site; foundation pit support