（1 天津大学建筑工程学院， 天津 300072； 2 天津大学滨海土木工程结构与安全教育部重点实验室， 天津 300072；  3 天津大学建筑学院， 天津 300072）

［摘要］研究超高层混合结构津湾广场9#楼施工期间日照温差和季节温差的温度效应。考虑太阳辐射、构件空间方位及日照时长影响，确定合理的温度计算工况。建立考虑重力二阶效应的有限元分析模型，分析对比结构变形和受力特点。结果表明：风荷载引起的结构侧向变形为剪切型变形，温差引起的侧向变形为弯曲型变形；在季节温差作用下结构竖向变形明显；在日照温差作用下侧向变形明显；50年一遇的风荷载作用下结构顶部侧移达到190mm，季节正温差和日照温差作用下，结构顶部侧移达到40mm，为风荷载引起变形的21%。

［关键词］超高层混合结构； 季节温差； 日照温差； 变形及内力

中图分类号：TU973-14文献标识码：A文章编号：1002-848X(2018)14-0075-05

Research on temperature difference effect of super high-rise hybrid structure of No.9 building in Jinwan Square

Yang Huijie1, Chen Zhihua1,2, Zhou Ting3, Li Zhiguo1

(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Coastal Structures in Civil Engineering and Safety of Ministry of Education, Tianjin University, Tianjin 300072, China; 3 School of Architecture, Tianjin University, Tianjin 300072, China)

Abstract:The temperature effect of sunshine temperature difference and seasonal temperature difference during the construction period of super high-rise hybrid structure of No.9 building in Jinwan Square was studied. A reasonable temperature calculation condition was determined, taking into account the influence of solar radiation, spatial orientation of components and duration of sunshine. A finite element analysis model considering the second-order effects of gravity was established to analyze the structural displacement and force characteristics. The results show that the lateral displacement of the structure caused by wind load is a shear displacement, and the lateral displacement caused by a temperature difference is a bending displacement; the vertical displacement of the structure under the effect of seasonal temperature difference is obvious; the lateral displacement is obvious under the sunshine temperature difference; in the case of a 50-year wind load, the lateral displacement of the top of the structure reaches 190 mm; and under the influence of positive seasonal temperature difference and sunshine temperature difference, the lateral displacement of the top of the structure reaches 40 mm, which is 21% of the lateral displacement caused by wind loads.

Keywords:super high-rise hybrid structure; seasonal temperature difference; sunshine temperature difference; displacement and internal force

*天津市建交委科技项目（2015-3）。

作者简介：杨慧杰，硕士研究生，Email: 18322130934@163.com。