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随着城市地铁建设的发展,盖挖法施工由于其独特的优势开始在车站施工选型中占据重要位置,它相对于明挖法来说影响交通和周边环境时间较短,对于缓解城市地面交通有着极大的帮助。而相对于暗挖法,盖挖法是在结构顶板或临时路面系统下进行暗挖作业,施工风险小。本文选取青岛地铁一期工程M3号线五四广场站的盖挖逆筑车站为研究对象,研究其围护桩(墙)、立柱桩沉降及结构逆筑下差异沉降对结构内力的影响,分析结果可用于优化设计和指导施工。
With the development of urban subway construction, because of its unique advantages, cover-excavation construction occupies an important position in the selection of station construction. It has a shorter impact on traffic and surrounding environment than the open cut method, Has a great help. Compared with the undercut method, the method of cover excavation is undercutting in the structure of the roof or temporary pavement system, and the construction risk is small. In this paper, we choose the cover digging station of Wusi Square Station on M3 line of Qingdao Metro Phase I project as the research object and study the influence on the internal force of the structure by the settlement of the retaining pile (wall), the column pile and the differential settlement under the reverse construction. The results can be used to optimize design and guide construction.