高層建筑結構非彈性時變分析方法*
郁冰泉1，趙 昕2
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（1 同濟大學建筑工程系，上海 200092；2 同濟大學建筑設計研究院（集團）有限公司，上海 200092）
[摘要] 傳統(tǒng)的高層建筑時變分析分析方法是通過結構彈性時變分析得出結構的內力時程進而得出構件的非彈性變形時程，而并未考慮內力時程與變形時程之間的相互關聯(lián)性。事實上結構在施工過程中從一個施工階段向后一個施工階段轉化時，內力將不斷重新分布，結構在前一個施工階段的力學性態(tài)也必然會對后續(xù)的施工階段的力學性態(tài)的產生影響，變形也隨之相應發(fā)生變化，反過來影響內力的分布，這種時變的耦合作用在現(xiàn)階段采用的結構非彈性時變分析方法中還未體現(xiàn)。本文提出的非彈性時變分析方法通過對結構在施工過程中由收縮徐變引起的時變作用的預計算，發(fā)現(xiàn)耦合效應對豎向構件內力有著不可忽視的影響。[關鍵詞] 時變作用;耦合效應;豎向變形;超高層結構中圖分類號：TU313 文獻標識碼：A 文章編號：1002-848X(2013)S1-0995-05*上海市科技攻關計劃資助（編-號：09dz1207704）；上海市青年科技啟明星計劃（跟蹤）資助（編號：11QH1402700）。通訊作者：郁冰泉，Email:ybqcxx@126.com。The time-varying and coupling effect of super high-rise structuresYu Bingquan 1, Zhao Xin 2(1 Department of Building Engineering, Tongji University, Shanghai 200092, China；2 Tongji Architectural Design (Group) Co., Shanghai 200092, China)Abstract: The forces of super high-rise structures will be redistributed during the construction of structures; the former mechanical phase will have an impact on the next one. Nowadays, this time-varying coupling effect hasn’t be reflected in the methods of the time-varying effect analysis. In this paper, pre-computing the time-varying effect caused by shrinkage and creep, found that the coupling effect have a negligible impact on the forces of vertical component during the construction of structures.Keywords: time-varying effect, coupling effect, vertical deformation, super high-rise structure
