河南發展大廈工程土方開挖施工方案.doc
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河南發展大廈工程位于鄭州市農業路東段路南、河南報業大廈對面，經一路與經二路之間。該工程地下兩層，地上由A座27層，B座15層及3層裙房組成。基礎采用樁筏結合基礎，地下及上部結構形式A座采用框架-核心筒結構，B座采用框架剪力墻結構（局部鋼結構）。
本工程基坑目前已按原基坑支護方案進行了支護，除A座第三道錨桿未施工外，其余支護工作已完成，經業主、監理等多方面專家論證，取消原樁-錨聯合支護體系中的第三道錨桿，改為在原第三道錨桿位置上部增加內支撐體系（具體詳見內支撐加固設計方案）。
本工程基坑土方開挖原定由昊鼎公司A座挖至-12.65m，B座至-8.05m，余土由我方挖除。現由于受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