控制超高層建筑樁筏基礎(chǔ)筏板彎矩的方法
巢斯1，趙錫宏2，張保良2，姜文輝1，肖俊華3，孔娟4，袁聚云4
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（1 同濟大學建筑設(shè)計研究院，上海 200092； 2 上海新華國際巖土技術(shù)有限公司，上海 200092；3 山東建筑大學，濟南 250101； 4 同濟大學，上海 200092）［摘要］為保證超高層建筑樁筏基礎(chǔ)的筏板彎矩設(shè)計能夠控制在安全范圍內(nèi)，采用相對彎曲計算筏板彎矩法（簡稱反算彎矩法）與共同作用理論的解析-數(shù)值解混合法（簡稱共同作用混合法）分別對金茂大廈、上海環(huán)球金融中心兩個實例進行分析。根據(jù)共同作用混合法計算上海中心大廈的地基變形，用以計算相對彎曲，求得相應彎矩，同時，分別采用共同作用混合法和共同作用數(shù)值解-迭代法（簡稱共同作用迭代法）計算上海中心大廈筏板彎矩并進行比較。利用上述計算的結(jié)果，分析上海中心大廈的筏板彎矩，確定控制其筏板彎矩的安全范圍。［關(guān)鍵詞］超高層建筑；樁筏基礎(chǔ)；筏板彎矩；反算彎矩法；共同作用混合法；共同作用迭代法Controlled method of moment in raft of piled raft foundation for super-tall buildingsChao Si1, Zhao Xihong2, Zhang Baoliang2, Jiang Wenhui1, Xiao Junhua3, Kong Juan4,Yuan Juyun4(1 Architectural Design & Research Inst.of Tongji Univ.,Shanghai 200092，China; 2 Shanghai Xinhua International Geotechnical Eng.Co.,Ltd.，Shanghai 200092,China; 3 Shandong Jianzhu Univ.,Jinan 250101,China; 4 Tongji Univ.，Shanghai 200092,China)Abstract:To ensure the designed moment in raft of piled raft foundation for super-tall buildings controlled in safe range, the back-analysis and the hybrid method on interaction between superstructure and foundation were used to calculate the moment in raft of piled raft foundation for Jinmao Building of 88-storey and Shanghai World Financial Center of 101-storey. The relative bending in raft for Shanghai Center Tower of 121-storey by the hybrid method was dealed with, and then the moments in raft of piled raft foundation were calculated by three methods: back analysis, hybrid method and iterative method on interaction between superstructure and foundation, respectively. Based on the above calculated results of moment in raft, the comprehensive analysis of moment in raft of piled raft foundation for Shanghai Center Tower is made in order to ensure the designed moment in safe range.Keywords:super-tall building; piled raft foundation; raft moment; back-analysis; hybrid method; iterative method作者簡介：巢斯，總工程師，教授級高工，Email：tj_tongyuan@vip.sina.com。參考文獻［1］董建國，趙錫宏. 高層建筑地基基礎(chǔ)——共同作用理論與實踐［M］. 上海：同濟大學出版社，1997.［2］趙錫宏，等.上海高層建筑樁筏與樁箱基礎(chǔ)設(shè)計理論［M］. 上海：同濟大學出版社，1989.［3］ZHAO X H,et al. Theory of Design of Piled Raft & Piled Box Foundations for Tall Buildings in Shanghai［M］. Shanghai:Tongji University Press, 1998.［4］徐至鈞，趙錫宏. 新世紀高層建筑結(jié)構(gòu)設(shè)計與施工手冊［M］. 北京：中國建材工業(yè)出版社，2006.［5］史佩棟. 樁基工程手冊［M］. 北京：人民交通出版社，2008.［6］徐至鈞，趙錫宏.高層建筑設(shè)計與施工（修訂版）［M］. 北京：科學出版社，2010.［7］龔劍，趙錫宏.對101層上海環(huán)球金融中心樁筏基礎(chǔ)性狀的預測［J］.巖土力學，2007，28（8）：1695-1699，1728.
