综合明挖顺作法开挖速度快、楼板逆作法刚度大的优点,运用明挖与逆作相结合的框架逆作法,在深基坑关键部位以楼板的框架体系代替支撑,在留出大量出土空间的同时,支撑体系的整体刚度得以加强,从而充分利用“时空效应”原理,加快土体开挖和支撑安装速度,达到控制基坑变形、保护基坑周边环境的目的。 Based on the merits of fast digging method and large stiffness of floor counter-method, the method of open cut and reverse combined frame inverse method was used to replace the support in the key part of deep foundation pit with the floor frame system, leaving a large amount of unearthed Space at the same time, the overall stiffness of the support system to be strengthened, so as to make full use of “space-time effect ” principle to speed up the speed of soil excavation and support installation to control deformation of the foundation pit to protect the surrounding environment of the foundation pit.