罕遇地震下设黏滞阻尼器钢框架-混凝土核心筒结构减震效果评估
发布时间：2018-08-16 14:05
【摘要】：为评估设非线性液体黏滞阻尼器钢框架-混凝土核心筒结构在罕遇地震作用下的减震效果,以某典型的高层建筑实际工程为背景,采用PERFORM-3D程序建立三维计算模型,分别输入3条地震波进行非线性动力时程分析。然后根据原结构和减震结构的分析结果,从楼层位移、楼层位移角、塑性损伤和结构耗能分布等方面进行了对比分析。分析结果表明:设非线性液体黏滞阻尼器后,钢框架-混凝土核心筒结构的楼层位移、层间位移角和塑性损伤都明显减小,并达到罕遇地震作用下的预期减震目标;对比原结构,由于阻尼器消耗了大部分地震能量,使得减震结构构件的非弹性耗能有所减少。针对罕遇地震作用下的减震效果,对减震结构方案提出了具体改善措施,以供实际工程参考。
[Abstract]:In order to evaluate the seismic absorption effect of steel frame-concrete core tube structure with nonlinear liquid viscous dampers under rare earthquake, a three-dimensional calculation model is established by PERFORM-3D program based on a typical high-rise building engineering. Three seismic waves were inputted for nonlinear dynamic time history analysis. Then, according to the analysis results of the original structure and the seismic absorption structure, a comparative analysis is carried out from the aspects of floor displacement, floor displacement angle, plastic damage and energy dissipation distribution of the structure. The results show that the floor displacement, interstory displacement angle and plastic damage of the steel frame-concrete core tube structure are obviously reduced after the nonlinear liquid viscous damper is installed, and the expected damping target under rare earthquake is achieved. Compared with the original structure, the inelastic energy dissipation of the structure is reduced because the dampers consume most of the seismic energy. In view of the effect of earthquake absorption under rare earthquake, the concrete improvement measures are put forward for the scheme of seismic absorption structure, which can be used as a reference for practical engineering.
【作者单位】： 深圳华阳国际工程设计有限公司;北京工业大学建筑工程学院;
【基金】：北京市教育委员会科技计划重点项目(KZ201010005007)
【分类号】：TU973.17;TU973.31
[Abstract]:In order to evaluate the seismic absorption effect of steel frame-concrete core tube structure with nonlinear liquid viscous dampers under rare earthquake, a three-dimensional calculation model is established by PERFORM-3D program based on a typical high-rise building engineering. Three seismic waves were inputted for nonlinear dynamic time history analysis. Then, according to the analysis results of the original structure and the seismic absorption structure, a comparative analysis is carried out from the aspects of floor displacement, floor displacement angle, plastic damage and energy dissipation distribution of the structure. The results show that the floor displacement, interstory displacement angle and plastic damage of the steel frame-concrete core tube structure are obviously reduced after the nonlinear liquid viscous damper is installed, and the expected damping target under rare earthquake is achieved. Compared with the original structure, the inelastic energy dissipation of the structure is reduced because the dampers consume most of the seismic energy. In view of the effect of earthquake absorption under rare earthquake, the concrete improvement measures are put forward for the scheme of seismic absorption structure, which can be used as a reference for practical engineering.
【作者单位】： 深圳华阳国际工程设计有限公司;北京工业大学建筑工程学院;
【基金】：北京市教育委员会科技计划重点项目(KZ201010005007)
【分类号】：TU973.17;TU973.31
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