深基坑超大双圆环内支撑施工关键技术

Key Construction of Ultra-large Double-ring Internal Support in Deep Foundation Excavation

随着高层建筑的不断建设,高层建筑的基坑支护施工技术越来越复杂,施工要求越来越高。武汉长江航运中心项目,在临江超深基坑施工中,采用直径150m超大双圆环内支撑,在内支撑施工中,重点把控圆环弧度控制,主要监控内支撑各节点钢筋安装、模板安装,确保内支撑施工质量,在深基坑内支撑施工质量及安全性方面,取得了较好成效。

With the continuous construction of high-rise buildings,foundation support construction for high-rise building is more and more complex,the requirement is higher. Wuhan Yangtze River shipping center project uses large diameter of150 m double-ring internal support,in internal support of the construction,focusing on the control arc control,and monitoring support mainly for each joint steel bars installation and formwork installation,to ensure the quality of internal support construction in the deep foundation excavation to support construction quality and safety,and achieved good results.