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对于地震作用,建筑物的结构设计历来都是以抗震设计为主,而抑制地震作用、不使地震能量传递到建筑物的隔震技术是一种新的技术手段。通过在基础固定和隔震情况下,对一层和多层建筑的基础剪力系数、隔震层变形等反应值的计算研究,结果表明,基础固定时结构的自振周期和设计谱的形状,是影响结构内地震作用的根本原因。为了发挥良好的隔震效果,实际工程中,隔震体系的周期应远大于基础固定时结构的自振周期。
For the earthquake effect, the structural design of buildings has always been based on the seismic design, while the seismic isolation, which can restrain the earthquake action and not transmit the earthquake energy to the building, is a new technical means. Based on the calculation of the basic shear stress and the deformation of the isolation layer, the results show that the natural vibration period and the shape of the design spectrum of the structure are basically fixed Is the fundamental reason that affects the earthquake effect in the structure. In order to exert a good effect of isolation, in practice, the period of the isolation system should be much longer than the natural period of the structure when the foundation is fixed.