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河南发展大厦工程土方开挖施工方案.doc

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河南发展大厦工程位于郑州市农业路东段路南、河南报业大厦对面,经一路与经二路之间。该工程地下两层,地上由A座27层,B座15层及3层裙房组成。基础采用桩筏结合基础,地下及上部结构形式A座采用框架-核心筒结构,B座采用框架剪力墙结构(局部钢结构)。
本工程基坑目前已按原基坑支护方案进行了支护,除A座第三道锚杆未施工外,其余支护工作已完成,经业主、监理等多方面专家论证,取消原桩-锚联合支护体系中的第三道锚杆,改为在原第三道锚杆位置上部增加内支撑体系(具体详见内支撑加固设计方案)。
本工程基坑土方开挖原定由昊鼎公司A座挖至-12.65m,B座至-8.05m,余土由我方挖除。现由于受A座
Zhengzhou, Henan Building, Engineering in Agriculture Road, East Road, south, Henan Building, opposite the press, by the way and between Jinger Road. The underground floors, the ground from the 27th floor, Block A, B Block, 15-layer and 3 tier skirt form. The basis of combined use of piled raft foundation, the ground floor and the upper structure of a framework Block A - core tube structure, B Block, using frame structure (local steel).
Original foundation of this project has carried out excavation program support, in addition to Block A is not the construction of the third anchor, the other support has been completed by the owners, supervision and other aspects for discussion by experts, to lift the pile - Anchor Combined Support System of the third anchor, to anchor in the original location of the third increase in the upper support system (see specific programs in support of reinforcement).
The earth excavation of excavation by the ho-winning company originally dug to Block A-12.65m, B Block to-8.05m, more than soil excavation by us. Block A is due to
 

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