久置临轨超深基坑后加分隔墙施工技术研究与应用

Research and Application of Construction Technology of Adding Separating Wall After Long-standing Deep Foundation Excavation

苏州某超高层项目是典型的临近轨道超深基坑工程,保护要求提高。为更好地保护地铁,首次采用了后加分隔墙分坑施工方案。主要介绍了在基坑在后加分隔墙分坑施工过程中的难点、关键技术及主要解决措施。

A super high-rise project in Suzhou is a typical near track super deep foundation pit project,and its protection requirements are improved.In order to protect the subway better,the construction scheme of pit separation with rear partition wall is adopted for the first time.This paper mainly introduces the difficulties,key technologies and main solutions in the construction process of the foundation excavation with additional partition wall.