某医技楼消能减震设计及非线性分析

发布时间：2019-03-10 21:00

【摘要】：上海某医院医技综合楼项目为高层框架-剪力墙结构,采用了墙板式软钢位移型阻尼器的消能减震设计方案。为研究该方案的减震效果,利用ETABS、PKPM-SAUSAGE两种有限元软件对结构进行多遇地震和罕遇地震下的非线性时程分析,分析结果表明:PKPM、YJK等常规设计软件中等效支撑+附加阻尼比能够有效地模拟阻尼器的作用;通用有限元分析模型中非线性连接单元能有效地模拟阻尼器的作用;软钢位移型阻尼器在小震下开始屈服耗能并为结构提供附加阻尼比,采用规范法和能量法两种方法计算,计算结果表明,阻尼器能够为该高层框架-剪力墙结构提供1%的附加阻尼比;罕遇地震下,阻尼器充分耗能,且所有阻尼变形均不超过产品限值;采用消能减震方案后,结构抗震性能有了较大提高。
[Abstract]:The high-rise frame-shear wall structure of a hospital medical technology complex in Shanghai has been designed by using the wall-plate soft steel displacement damper. In order to study the damping effect of the scheme, the nonlinear time history analysis of the structure under frequent and rare earthquakes is carried out by using two kinds of finite element software ETABS,PKPM-SAUSAGE. The results show that the PKPM, software is used to analyze the nonlinear time history of the structure under frequent and rare earthquakes. The additional damping ratio of equivalent bracing can effectively simulate the action of dampers in conventional design software such as YJK. The nonlinear connection element in the general finite element analysis model can effectively simulate the action of dampers. The soft steel displacement damper begins to yield energy dissipation under small earthquake and provides additional damping ratio for the structure. The calculation results show that the code method and the energy method are used to calculate the energy ratio of the structure. The damper can provide 1% additional damping ratio for the high-rise frame-shear wall structure. Under rare earthquakes, the dampers are fully energy dissipation and all damping deformation does not exceed the product limit, and the seismic performance of the structure is greatly improved after adopting the energy dissipation scheme.
【作者单位】：上海力岱结构工程技术有限公司;
【分类号】：TU973.31

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