城区复杂环境中围护结构施工技术

深圳地铁某标段区间明挖隧道从密集的高层建筑区内通过，场地十分狭窄，地层上软下硬，施工范围内存在多种地下障碍物，围护结构施工技术难度极大。重点介绍了围护结构施工方案的选用原则及优化方案，并介绍了围护结构的主要施工技术。

Construction Technology of Retaining Structures under Complicated Urban Environment

An open-cut running tunmel of Shenzhen Metro passes through underneath an area with dense high-rise buildings. The job site of the tunnel is narrow, the surrounding ground of the tunnel consists of soft materials on the top and hard materials at the bottom and there exist various underground obstacles within the job site, therefore there exit great difficeulties in the construction of the retaining structures. This paper introduces the selection and optimization of the construction schemes of the retaining structures, as well as the major construction technologies of retaining structures.