复杂环境下深基坑“双坑合一”开挖施工技术

Construction Technology for Deep Foundation Pit Excavation with "Double Pits in One" Under Complex Environment

以上海轨交13号线金科路站公交枢纽的基坑工程为背景,介绍了在紧邻地铁连通道口及地下隧道的复杂环境条件下,为缩短工期,将原深基坑“分坑”改为“双坑合一”施工的总体思路。通过采取针对性的技术措施、施工安全控制措施、变形实时监测措施,保证了基坑施工及相邻地铁项目的安全,既达到了节省工期的目的,又满足了地铁试运行的要求,取得了良好的社会和经济效益。

Taking the foundation pit project of Jinke Road Station Public Transit Hub of Shanghai Railway Transit Line 13 as the background,This paper introduces the general idea of changing the original deep foundation pit construction method from"separated pit"into"double pits in one"in order to shorten the construction period under the complex environment conditions of adjacent to subway access passage and underground tunnel.The targeted technical measures,construction safety control measures and real-time deformation monitoring measures are adopted to ensure the safety of foundation pits construction and adjacent subway projects,which not only achieve the goal of saving construction time,but also meet the requirements of subway trial operation,and obtain good social and economic benefits.