【摘要】 对于大跨度空间网壳结构,在地震作用下,竖向激励对结构的破坏是不能忽视的。特别是在一些高烈度和震中地区的建筑物,由于竖向分量明显,必须进行竖向隔震在内的三维隔震研究。论文在SMA-橡胶复合隔震支座基础上,针对普通橡胶支座存在的不足,设计了SMA三维隔震支座,分析了SMA三维隔震支座的构造和工作原理。建立了某体育场的双层柱面网壳模型,通过与普通橡胶支座的对比分析,应用SMA三维隔震支座的网壳结构的水平和竖向杆件内力都较普通橡胶支座下有明显降低,特别是网壳结构最容易发生变形破坏的外端环杆内力降低比较明显,对结构具有较好的保护作用;通过位移时程反映分析,在SMA三维复合隔震支座作用下结构节点位移峰值明显降低,时程曲线趋于平缓,说明了SMA三维隔震支座有较好的隔震效果。更多还原

【Abstract】 In the earthquake,the vertical structure of incentives for the destruction can not be ignored.In some areas of high intensity and the epicenter of the structure,especially nuclear power plants and lifeline engineering and need for vertical isolation,including three-dimensional Seismic Isolation.Built the double layer lattice dynamic equation with SMA 3D base isolator considering its principle and choose a project which with the situation of laminated rubber bearing and The SMA 3D base isolator under the horizontal and vertical seismic impact.Through the analysis the truss horizontal and vertical internal force dropped obviously with the SMA 3D base isolator,especially the outer part which easily happened deformed damage and the structure internal force distribution is more reasonable,the deformation in harmonies,the lattice damage of weakness part is limited and offer efficient protection.Either the displacement analysis,the peak displacement reduced significantly and time history tends to slow,the isolating effect of the SMA 3D base isolator is prior to the laminated rubber bearing.更多还原