某医院消能减震结构地震响应分析

SEISMIC RESPONSE ANALYSIS OF ENERGY DISSIPATION STRUCTURE OF A HOSPITAL

减震技术因其概念明确、减震效果明显,获得广泛应用。高烈度区框架-剪力墙结构医院的消能减震技术应用前景广阔,相关的研究还较少,有待于进一步的研究和工程实例扩充。文中以某框架-剪力墙结构医院为工程实例,利用ETABS建立有限元分析模型,对非减震结构与减震结构进行了多遇地震作用下的弹性时程分析和罕遇地震下的弹塑性时程分析。结果表明设置粘滞型阻尼器可有效降低地震作用下结构层间位移角及楼层剪力;地震发生时,阻尼器滞回环形状饱满,耗能能力强。

Damping technology has been widely used because of its clear concept and obvious effect.The energy dissipation and damping technology for hospitals with frame-shear wall structure has a wide application prospect.The related research is still few,further research and more project examples are needed.In this paper,taking a hospital with frame-shear wall structure as an example,the ETABS software was used to establish finite element analysis models to perform elastic time-history analysis under frequent earthquakes and elasto-plastic time history analysis under rare earthquakes for the non-damping structure and damping structure.The results show that the viscous dampers can effectively reduce the displacement angle and story shear forces of the structure when earthquakes occurs;at the same time,the hysteresis loops of viscous dampers have a large encircling area and the energy dissipation capacity is good.