搅拌桩+钻孔桩+型钢内支撑组合支护在狭小场地深基坑中的应用

该文结合珠海横琴中心南路整体2#下穿地道箱涵深基坑支护实例,分析了搅拌桩+钻孔桩+型钢内支撑组合支护结构体系加固措施的优点及施工要点。特别在狭小场地深基坑及其周边环境复杂的情况下,搅拌桩+钻孔桩+型钢内支撑组合支护的优越性得到充分发挥及应用,达到了施工周期短、保证基坑及周边建筑安全的目的。

Application of Mixing Pile+Cast-in-situ Pile+Shaped Steel Inner Bearing Combined Supporting in Narrow Site Pit

According to the case of the integer 2# underpassing subway box culvert pit supporting of Hengqin Center Road(S) in Zhuhai,the article analyzes the advantages and the construction gist of the mixing + cast-in-situ pile + shaped steel inner bearing combined supporting structural system reinforcement measure.The superiority of the mixing pile + cast-in-situ pile + shaped steel inner bearing combined supporting is fully played and applied specially in the narrow site pit and complex surrounding environment,which achieves the objective of the short construction period,and to protect the security of the foundation pit and the surrounding buildings.