浅埋暗挖单拱大跨结构在地铁车站的应用
Railway Standard Design(2011)
Abstract
以青岛地铁一期工程(3号线)清江路站为例,介绍在青岛特有的"上软下硬"地质条件下,浅埋暗挖单拱大跨结构在地铁车站中的应用。通过建立有限元模型,对施做完二衬时水土同时作用、全水无围岩压力、全围岩无水和中板浇筑后水土同时作用时4种施工工况下的结构内力进行计算分析,得到在水土同时作用有中板支撑时结构为最不利荷载工况,通过配筋计算可知主体隧道二衬配筋较为合理。
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Key words
Single-arch and long-span,Internal force analysis,Shallow mining excavation,Subway station
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