罕遇地震下設(shè)黏滯阻尼器鋼框架-混凝土核心筒結(jié)構(gòu)減震效果評估
發(fā)布時間：2018-08-16 14:05
【摘要】：為評估設(shè)非線性液體黏滯阻尼器鋼框架-混凝土核心筒結(jié)構(gòu)在罕遇地震作用下的減震效果,以某典型的高層建筑實際工程為背景,采用PERFORM-3D程序建立三維計算模型,分別輸入3條地震波進行非線性動力時程分析。然后根據(jù)原結(jié)構(gòu)和減震結(jié)構(gòu)的分析結(jié)果,從樓層位移、樓層位移角、塑性損傷和結(jié)構(gòu)耗能分布等方面進行了對比分析。分析結(jié)果表明:設(shè)非線性液體黏滯阻尼器后,鋼框架-混凝土核心筒結(jié)構(gòu)的樓層位移、層間位移角和塑性損傷都明顯減小,并達到罕遇地震作用下的預(yù)期減震目標;對比原結(jié)構(gòu),由于阻尼器消耗了大部分地震能量,使得減震結(jié)構(gòu)構(gòu)件的非彈性耗能有所減少。針對罕遇地震作用下的減震效果,對減震結(jié)構(gòu)方案提出了具體改善措施,以供實際工程參考。
[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.
【作者單位】： 深圳華陽國際工程設(shè)計有限公司;北京工業(yè)大學(xué)建筑工程學(xué)院;
【基金】：北京市教育委員會科技計劃重點項目(KZ201010005007)
【分類號】：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.
【作者單位】： 深圳華陽國際工程設(shè)計有限公司;北京工業(yè)大學(xué)建筑工程學(xué)院;
【基金】：北京市教育委員會科技計劃重點項目(KZ201010005007)
【分類號】：TU973.17;TU973.31
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