任重翠, 李建辉, 唐意, 刘军进, 严亚林, 郝玮, 孙超. 风震联合作用下高层建筑主体结构和玻璃幕墙的性能研究[J]. 工程力学, 2022, 39(7): 58-69. DOI: 10.6052/j.issn.1000-4750.2021.03.0223
引用本文: 任重翠, 李建辉, 唐意, 刘军进, 严亚林, 郝玮, 孙超. 风震联合作用下高层建筑主体结构和玻璃幕墙的性能研究[J]. 工程力学, 2022, 39(7): 58-69. DOI: 10.6052/j.issn.1000-4750.2021.03.0223
REN Chong-cui, LI Jian-hui, TANG Yi, LIU Jun-jin, YAN Ya-lin, HAO Wei, SUN Chao. PERFORMANCE STUDY OF MAIN STRUCTURE AND GLASS CURTAIN WALL OF HIGH-RISE BUILDING UNDER COMBINED ACTION OF WIND AND EARTHQUAKE[J]. Engineering Mechanics, 2022, 39(7): 58-69. DOI: 10.6052/j.issn.1000-4750.2021.03.0223
Citation: REN Chong-cui, LI Jian-hui, TANG Yi, LIU Jun-jin, YAN Ya-lin, HAO Wei, SUN Chao. PERFORMANCE STUDY OF MAIN STRUCTURE AND GLASS CURTAIN WALL OF HIGH-RISE BUILDING UNDER COMBINED ACTION OF WIND AND EARTHQUAKE[J]. Engineering Mechanics, 2022, 39(7): 58-69. DOI: 10.6052/j.issn.1000-4750.2021.03.0223

风震联合作用下高层建筑主体结构和玻璃幕墙的性能研究

PERFORMANCE STUDY OF MAIN STRUCTURE AND GLASS CURTAIN WALL OF HIGH-RISE BUILDING UNDER COMBINED ACTION OF WIND AND EARTHQUAKE

  • 摘要: 为研究风、地震单独及联合作用下,主体结构和玻璃幕墙的性能变化和相互影响,基于高烈度区98 m高框筒结构,依据规范要求增设玻璃幕墙形成总体有限元分析模型,选取3组三向地震动记录,并通过比例为1∶440的缩尺模型风洞试验获得不同重现期的风压时程数据,采用动力弹塑性分析方法,研究风、地震单独与联合作用下主体结构和玻璃幕墙的受力变化。结果表明:主体结构对玻璃幕墙的受力影响大于玻璃幕墙对主体结构的,在风、地震单独及联合作用下,主体结构的层间变形大于玻璃幕墙自身变形。在设防大震和超烈度大震作用下,主体结构的响应和玻璃幕墙的损毁范围随荷载增大而增大,结构变形增长大于结构基底剪力;玻璃幕墙在风荷载作用下未坏,主体结构完好,结构基底剪力、顶部楼层位移和楼层层间位移角呈线性增长;与单独大震作用相比,在1.1倍100年重现期风压和大震联合作用时,结构出现扭转现象,楼层层间位移角之比由1.0增至1.3,主体结构和玻璃幕墙的非线性响应大于风震单独作用的叠加,其中结构顶点位移和最大层间位移角为单独作用时求和值的121%、106%。在大震及风震联合作用下,玻璃幕墙容易发生破坏的位置为平行地震作用主向的侧面。

     

    Abstract: The performance and interaction between main structure and glass curtain wall under the individual and combined actions of wind and earthquake was studied. Glass curtain wall is added to a 98 m high frame-core wall according to the standard. Three groups of 3D data are selected from seismic records, and the wind pressure data of different return periods are obtained through a 1∶440 scale wind tunnel model test. Then the effects of individual and combined actions of wind and earthquake on the behavior of main structure and glass curtain wall are studied by the dynamic elastoplastic analysis method. The results show that main structure has a greater impact on glass curtain wall than on main structure. Whether under the individual or combined actions of wind and earthquake, the story drift of main structure was larger than glass wall itself. Under the design and super-intensity earthquake loadings, with the increase of the effective load, the response of the main structure and the damage degree of the glass curtain wall are increasing, and the growth of structural deformation are greater than base shear. Under wind load, glass curtain wall was not fail, main structure was in good stage, and the base shear, top displacement and max story drift increased linearly. Compared with rare earthquake acting alone, when 1.1 times 100-year return period wind pressure is combined, torsional effect appears, and story drift ratio increased from 1.0 to 1.3. The nonlinear effect of main structure and glass curtain wall is greater than the sum of wind and earthquake. The top displacement and the max story drift were 121% and 106% of the sum of wind and earthquake. Under rare earthquake or combined with wind pressure, the failure of glass curtain wall is more likely to happen on the side parallel to earthquake main direction.

     

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