(1 同济大学建筑设计研究院（集团）有限公司，上海 200092； 2 山东同圆设计集团有限公司，济南 250101；3 同济大学建筑工程系，上海 200092）

［摘要］计算了上海地区施工历时较长的超高层混合结构上海中心大厦在施工阶段的温度作用：季节温差和日照温差，给出温度作用的两种工况和构件计算温度，考虑太阳的照射角度、日照时间及构件之间的遮挡情况，选取合理的日照温差作用范围，选用考虑重力二阶效应的有限元分析软件模型，分析结构在两种工况下代表位置处的整体变形特点和伸臂构件的受力情况，并比较两种工况下的结构效应。结果表明：日照温差作用对结构影响较大，结构在两种工况下竖向位移较大，季节温差作用下水平位移很小，日照温差下水平层间位移角相对较大；日照温差工况下，向阳面位置处相邻竖向构件相差较大，由于竖向构件的差异变形和结构整体弯曲效应，使得伸臂在此工况下的内力较季节温差有很大差别。

［关键词］巨型框架伸臂核心筒结构；日照温差；季节温差；整体变形；伸臂内力

中图分类号：TU973+2文献标识码：A文章编号：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

*上海市科技攻关计划资助（09dz1207704）。

作者简介：郑毅敏，硕士，Email: 22zym@tjadri.com。

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