软土地区复杂边界条件下深大基坑钢前撑支护应用研究

Study on Application of Steel Front Support in Deep Foundation Pit Under Complex Boundary Conditions in Soft Soil Area

钢前撑是近几年应用的一种新型基坑支护技术,与常规支护基坑形式相比,具有施工便利、降低成本、节省工期等优点。以其在浙江省玉环市某深大基坑工程中的应用为例,从方案选型、数值模拟、技术要点及实施效果等角度进行分析,结合施工监测进行验证,为相似复杂地质条件和边界条件下的深大基坑工程提供经验。

Steel front support is a new type of foundation pit support technology applied in recent years.Compared with the conventional form of foundation pit support,it has the advantages of convenient construction,reducing cost and saving construction period.Taking its application in a deep and large foundation pit project in Yuhuan City,Zhejiang Province as an example,it is analyzed from the aspects of scheme selection,numerical simulation,technical points and implementation effect,and verified in combination with construction monitoring,so as to provide experience for deep and large foundation pit project under similar complex geological and boundary conditions.