复杂环境的地下室盖挖加层关键技术研究

上海市轨道交通徐家汇大型换乘枢纽为实现三条轨道交通线间的付费区换乘，需在既有1号线车站西侧地铁商场向下加层，形成换乘大厅。该文介绍了利用既有地下室顶板作为天然盖板，在地下室内进行暗挖加层的施工方法，避免了实施期间对交通、管线的影响。并保证1号线的运营安全。其相关技术可在既有建筑下增设地下室、地下室加层的工程中借鉴应用。

Study of Key Technique of Basement Covering Digging Adding-Floor in Complicated Environment

In order to realize the changing in the charging area among three rail traffic lines in Xujiahui Changing Hub of Shanghai Rail Traffic, it is required to add the floor downwards at the existing metro bazaar at the west side of No.1 Line Station to form the changing hall. The article introduces the construction method of utilizing the existing basement top plate as the natural cover plate and the blind excavating adding floor within the basement so as to avoid the influence on the traffic and pipelines durin...