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(1 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； 2 山東同圓設(shè)計(jì)集團(tuán)有限公司，濟(jì)南 250101；3 同濟(jì)大學(xué)建筑工程系，上海 200092）

［摘要］計(jì)算了上海地區(qū)施工歷時(shí)較長(zhǎng)的超高層混合結(jié)構(gòu)上海中心大廈在施工階段的溫度作用：季節(jié)溫差和日照溫差，給出溫度作用的兩種工況和構(gòu)件計(jì)算溫度，考慮太陽(yáng)的照射角度、日照時(shí)間及構(gòu)件之間的遮擋情況，選取合理的日照溫差作用范圍，選用考慮重力二階效應(yīng)的有限元分析軟件模型，分析結(jié)構(gòu)在兩種工況下代表位置處的整體變形特點(diǎn)和伸臂構(gòu)件的受力情況，并比較兩種工況下的結(jié)構(gòu)效應(yīng)。結(jié)果表明：日照溫差作用對(duì)結(jié)構(gòu)影響較大，結(jié)構(gòu)在兩種工況下豎向位移較大，季節(jié)溫差作用下水平位移很小，日照溫差下水平層間位移角相對(duì)較大；日照溫差工況下，向陽(yáng)面位置處相鄰豎向構(gòu)件相差較大，由于豎向構(gòu)件的差異變形和結(jié)構(gòu)整體彎曲效應(yīng)，使得伸臂在此工況下的內(nèi)力較季節(jié)溫差有很大差別。

［關(guān)鍵詞］巨型框架伸臂核心筒結(jié)構(gòu)；日照溫差；季節(jié)溫差；整體變形；伸臂內(nèi)力

中圖分類號(hào)：TU973+2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)05-0028-05

Analysis on sunshine temperature difference effect of Shanghai Center

Zheng Yimin¹, Zhang Panpan², Zhao Xin¹, Zheng Yu³(1 Architectural Design & Research Institute of Tongji University（Group）Co, Ltd, Shanghai 200092, China;2 Shandong Tong Yuan Design Group Co, Ltd, Jinan 250101, China;3 Department of Building Engineering, Tongji University, Shanghai 200092, China)

Abstract:The season temperature and sunshine temperature differences is calculated during construction stage of Shanghai Center whose constructional period lasts long in Shanghai. Two cases of the temperature difference and the design temperature was given. Considering the irradiation angle, sunshine time and the shading between members, the reasonable temperature action position was adopted. According to  the finite element analysis  which taken the gravity second-order effect into consideration, the global deformation and the inernal force of outriggers in the typical location were analyzed and the effects between the two cases were compared. The results show that the effects of sunshine temperature difference to the structure are striking. The vertical displacements under the two cases are large and the horizontal displacement under the sunshine temperature difference is much larger than that of the season temperature. The much bigger differential displacement between the adjacent vertical members located the sunny slope and the overall bending effect leads to the internal force of outriggers different from the season differential temperature.

Keywords:outrigger braced mega frame core-wall structure; sunshine temperature difference; season temperature difference;  global displacement;  internal force of outrigger

*上海市科技攻關(guān)計(jì)劃資助（09dz1207704）。

作者簡(jiǎn)介：鄭毅敏，碩士，Email: 22zym@tjadri.com。

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