【摘要】 针对某医院建筑的框架-剪力墙结构,分别在结构未采取减震措施和设置粘滞阻尼器减震装置情况下,采用三维空间有限元分析软件PERFORM-3D,进行7度(0.15 g)罕遇地震作用下的弹塑性时程计算,分析该结构的变形、内力、破坏情况和减震效果。非减震结构和减震结构计算结果的对比分析表明,减震结构地震反应减小,粘滞阻尼器耗能在非线性耗能中占有一定比例,主要承重构件非线性耗能有较大下降,该项目粘滞阻尼器的设置能够较好地达到提高结构抗震性能的目的。更多还原

【Abstract】 A frame-shear wall structure with viscous dampers for a hospital is located in 7( 0. 15 g) seismic intensity area. In order to investigate the deformation,internal force,damage and damping effect of the structure in rare intensity of 7 degree earthquakes,the three dimensional space finite element analysis software PERFORM-3D was used to perform elasto-plastic time history analysis for the structure under the state with or without damping measure. The calculation results indicate that the earthquake corresponding of the structure with viscous dampers is smaller than that of the structure without viscous dampers. The energy dissipation of viscous dampers has a certain proportion in the nonlinear energy dissipation. The nonlinear energy dissipation of the main load bearing members is greatly decreased. The setting of the viscous damper of the project can achieve the purpose of improving the structure seismic performance.更多还原