徐家汇枢纽工程盖挖加层施工技术

On Construction Technique of Covering Digging Adding-floor Applied in Xujiahui Hub Project

介绍了上海轨道交通徐家汇枢纽工程盖挖加层施工技术。针对实际情况,设计了先土体加固、后对原结构托换、再进行盖挖法施工的方案。实时监测结果表明选取的开挖方案对周边环境影响较小,也与数值模拟接近。

The paper introduces the construction technology of covering digging adding-floor in Shanghai Metro Xujiahui Hub Project. Aiming at the practical condition,the construction plan is divided into strengthening soil body firstly,underpinning existing structure secondly and covering digging adding-floor finally.The results from on-site monitoring indicate that the selected excavation plan influences the surroundings lightly,closing to numerical simulation.