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北京地铁奥运支线森林公园站北区地下一层施工时,地下二层、三层图纸没有一起出图,且地下二、三层先进行施工。中层板允许承受5kPa,在顶板混凝土浇筑时产生的荷载远远大于中层板承受力要求,根据以往施工经验,施工地下一层顶板时地下二、三层必须采用满堂红脚手架回顶,以保证顶板施工荷载可以由脚手架传递至底板,从而保证中层板不会因荷载太大而遭受破坏。但为确保冷热滑的总体工期,地下三层、二层站台板及二次砌筑内部施工必须与地下一层主体施工同时进行,为了保证工期且确保中层板不因顶板荷载太大而遭受破坏,经过各种方案讨论研究,地下一层施工时采用工字钢支撑满堂红脚手架进行加固处理。
Beijing Olympic Olympic Forest Park Station North Station underground basement construction, underground two, three drawings do not work together, and underground two, three first construction. According to the construction experience in the past, underground two or three floors must be covered with red scaffolding to the top of the roof to ensure the roof construction The load can be transferred from the scaffolding to the soleplate so that the intermediate plate can not be damaged by too much load. However, in order to ensure the overall schedule of hot and cold sliding, the construction of underground three-storey, two-deck platform and secondary masonry must be carried out simultaneously with the construction of the main body of the ground floor. In order to ensure the construction period and to ensure that the middle deck will not suffer from too much roof load Destruction, after a variety of programs to discuss the study, the construction of the ground floor using I-beam support full house red scaffolding reinforcement.