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（同濟(jì)大學(xué)建筑設(shè)計(jì)研究院（集團(tuán)）有限公司，上海 200092）

［摘要］為研究超高層建筑翼墻性能，首先依據(jù)有限元理論建立了基于樁筏基礎(chǔ)和上部結(jié)構(gòu)共同作用的整體三維有限元模型，分別比較了模型中設(shè)置翼墻和不設(shè)置翼墻兩種情況下整體結(jié)構(gòu)的周期、最大層間位移角、巨柱及核心筒等關(guān)鍵構(gòu)件內(nèi)力和差異變形。其次，為考慮混凝土長期荷載下開裂及徐變的影響，對地下室翼墻剛度進(jìn)行適當(dāng)折減，獲得翼墻剛度折減前后結(jié)構(gòu)性能的變化情況。在上述分析基礎(chǔ)上，進(jìn)一步考慮了基底樁彈簧約束和施工過程模擬等因素對翼墻、柱、核心筒等關(guān)鍵構(gòu)件內(nèi)力的影響。

［關(guān)鍵詞］超高層建筑；翼墻；差異沉降；剛度折減；彈簧約束；施工模擬

中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2011)05-0024-04

Performance analysis on basement fin wall of Shanghai Center

Sun Huahua, Zhao Xin, Li Xueping, Ding Jiemin, Zhou Ying(The Architectural Design & Research Institute of Tongji University(Group) Co., Ltd., Shanghai 200092, China)

Abstract:In order to assess the performance of fin wall, a three dimensional finite element model including both piles, raft mat and the superstructure was established. Two cases, including model with fin wall and model without fin wall, were considered, and the structural periods, story drift, internal forces of key members and differential deformation were obtained respectively. By considering the effect of concrete cracking and shrinkage, the performance of models with and without fin wall stiffness reduction was compared. Based on the above mentioned analysis, the spring constraint and construction process were considered for further analysis to evaluate the  internal forces of key members.

Keywords:super tall building; fin wall; differential settlement; stiffness reduction; spring constraint; construction process

*上海市科技攻關(guān)計(jì)劃資助（09dz1207704）。

作者簡介：孫華華，碩士，Email:22shh@tjadri.com。

參考文獻(xiàn)

［1］DGJ08.9—2003， J10284—2003 建筑抗震設(shè)計(jì)規(guī)程［S］.上海：上海市建設(shè)工程標(biāo)準(zhǔn)定額管理總站,2003.

［2］YB9082—2006  鋼骨混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］.北京：冶金工業(yè)出版社，2007.