津湾广场9#楼超高层混合结构温差效应研究  

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

作　　者：杨慧杰[1] 陈志华[1,2] 周婷[3] 李志国[1] Yang Huijie;Chen Zhihua;Zhou Ting;Li Zhiguo(School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coastal Structures in Civil Engineering and Safety of Ministry of Education,Tianjin University,Tianjin 300072,China;School of Architecture,Tianjin University,Tianjin 300072,China)

机构地区：[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

出　　处：《建筑结构》2018年第14期75-79,98,共6页Building Structure

基　　金：天津市建交委科技项目(2015-3)

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%。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 is21% of the lateral displacement caused by wind loads.

关 键 词：超高层混合结构 季节温差 日照温差 变形及内力 

分 类 号：TU973.14[建筑科学—结构工程]