紧邻住宅群的软土深基坑的时空效应法施工

Time space Effect Method in Deep Foundation Pit Construction of Dense Building Group in Soft Ground

以上海地铁二号线中央公园车站深基坑为工程背景，详细阐述了在基坑工程中，如何运用时空效应规律指导施工，达到保护周围建筑群的要求。基坑周边有建筑物时，要快速开挖，及时支撑，避免搁置，施工参数要同周围环境相联系。在施工组织设计中，每栋建筑物对应的土体应划在同一开挖段中，而且基坑开挖的最后位置应远离建筑物。

The deep foundation pit at the Central Park Station on Shanghai Subway Route 2 is taken as the engineering background of this article. The application of time space effect method in foundation pit construction with protection of the surrounding buildings is discussed in details. When surrounded by other buildings, foundation pits should be excavated quickly, supported in time without delay. Meanwhile construction parameters should be related to surroundings. In planning, earthwork excavated from each building should be arranged in one section and the ultimate excavation spot should be away from the nearby building.