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(1 華東建筑設計研究院有限公司  上海 200002； 2 同濟大學地下建筑與工程系  上海 200092)
［提要］  在考慮上部結(jié)構(gòu)基礎底板樁土協(xié)同作用分析方法的研究基礎上，提出了一種較為實用的計算方法：采用Poulos解或Geddes解分析樁土剛度，用Reissner厚板理論計算底板內(nèi)力與變形，用有限元法分析上部結(jié)構(gòu)。該方法能考慮樁土變剛度、底板變厚度、抗拔樁、不均勻土層、網(wǎng)格自動剖分等因素，解決實際工程中遇到的各種復雜問題的計算。在上海環(huán)球金融中心工程中，用該方法得到了樁頂?shù)姆戳?、基礎沉降、底板內(nèi)力等計算結(jié)果，據(jù)此進行地基基礎的設計及變形、內(nèi)力實測的布置。
［關鍵詞］  樁基礎  協(xié)同工作  Poulos解  Geddes解  Reissner厚板理論
Introduction and Application of the Utility Calculation and Analysis Method Considering the Combined Action of PileSoilRaftSuperstructure/Wang Weidong1, Shen Zhaowu2, Wu Jiangbin1(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China; 2 Geotechnical Engineering Department of Tongji University, Shanghai 200092, China)
Abstract:Some analysis method has been described that can consider the combined action of the pilesoil, raft and superstructure. A utility method has been summarized. In the method, Poulos or Geddes theory are used to count pilesoil system; Reissner thick plank theory is used to calculate raft, and the finite element method is used to analyse the superstructure. Through considering pilesoil stiffness changing, raft thickness changing, uplift piles, and inhomogeneous soil layer and so on, the method will become one of combined action design method which can accord with actual structure. Shanghai World Financial Centers axial forces of pile, settlement of foundation and stress of raft have been calculated by this method. This buildings actual measurements are also introduced.
Keywords:pile foundation; combined action; Poulos solution; Geddes solution; Reissner thick plank theory
*上海市科委創(chuàng)新團隊攻關項目：超高層建筑建造技術研究(03DZ12039)。