考虑地震残余变形的高层建筑抗震性能分析
发布时间：2018-09-08 13:42
【摘要】：结构震后残余变形的大小直接影响到人群能否顺利疏散和逃生,以及震后修复加固的可行性和必要性,而土体的参与也会影响到整体的残余变形。对某高层建筑分别建立了考虑和忽略土-结构相互作用(SSI)的有限元模型,通过不同地震动水平下的非线性时程分析获得结构的最大变形和残余变形。结果表明,考虑SSI后,最大层间位移角增大,结构最大变形和残余变形增加,且增加的幅度随地震强度增大而逐渐变大,因此忽略SSI会使结构分析和设计结果偏于危险,高设防烈度地区更应考虑SSI的影响。
[Abstract]:The magnitude of the residual deformation of the structure directly affects the evacuation and escape of the crowd, and the feasibility and necessity of post-earthquake repair and reinforcement, and the participation of soil will also affect the residual deformation of the whole. A finite element model considering and neglecting soil-structure interaction (SSI) is established for a high-rise building. The maximum deformation and residual deformation of the structure are obtained by nonlinear time-history analysis at different ground motion levels. The results show that considering SSI, the maximum interstory displacement angle increases, the maximum deformation and residual deformation of the structure increase, and the amplitude of the increase increases with the increase of earthquake intensity. Therefore, ignoring the SSI will make the structural analysis and design results more dangerous. The influence of SSI should be considered more in high fortified area.
【作者单位】： 天津大学建筑工程学院;天津市建筑设计院;
【分类号】：TU973.31
本文编号：2230685
[Abstract]:The magnitude of the residual deformation of the structure directly affects the evacuation and escape of the crowd, and the feasibility and necessity of post-earthquake repair and reinforcement, and the participation of soil will also affect the residual deformation of the whole. A finite element model considering and neglecting soil-structure interaction (SSI) is established for a high-rise building. The maximum deformation and residual deformation of the structure are obtained by nonlinear time-history analysis at different ground motion levels. The results show that considering SSI, the maximum interstory displacement angle increases, the maximum deformation and residual deformation of the structure increase, and the amplitude of the increase increases with the increase of earthquake intensity. Therefore, ignoring the SSI will make the structural analysis and design results more dangerous. The influence of SSI should be considered more in high fortified area.
【作者单位】： 天津大学建筑工程学院;天津市建筑设计院;
【分类号】：TU973.31
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