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（1 天津大學(xué)建筑工程學(xué)院， 天津 300072； 2 天津大學(xué)濱海土木工程結(jié)構(gòu)與安全教育部重點(diǎn)實(shí)驗(yàn)室， 天津 300072；  3 天津大學(xué)建筑學(xué)院， 天津 300072）

［摘要］研究超高層混合結(jié)構(gòu)津?yàn)硰V場9#樓施工期間日照溫差和季節(jié)溫差的溫度效應(yīng)?？紤]太陽輻射、構(gòu)件空間方位及日照時(shí)長影響，確定合理的溫度計(jì)算工況。建立考慮重力二階效應(yīng)的有限元分析模型，分析對比結(jié)構(gòu)變形和受力特點(diǎn)。結(jié)果表明：風(fēng)荷載引起的結(jié)構(gòu)側(cè)向變形為剪切型變形，溫差引起的側(cè)向變形為彎曲型變形；在季節(jié)溫差作用下結(jié)構(gòu)豎向變形明顯；在日照溫差作用下側(cè)向變形明顯；50年一遇的風(fēng)荷載作用下結(jié)構(gòu)頂部側(cè)移達(dá)到190mm，季節(jié)正溫差和日照溫差作用下，結(jié)構(gòu)頂部側(cè)移達(dá)到40mm，為風(fēng)荷載引起變形的21%。

［關(guān)鍵詞］超高層混合結(jié)構(gòu)； 季節(jié)溫差； 日照溫差； 變形及內(nèi)力

中圖分類號：TU973-14文獻(xiàn)標(biāo)識碼：A文章編號：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

*天津市建交委科技項(xiàng)目（2015-3）。

作者簡介：楊慧杰，碩士研究生，Email: 18322130934@163.com。