SMA三维隔震支座的双层柱面网壳结构地震响应分析
|
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。
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.
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.
引文
[1]董军辉.一种新型SMA阻尼器的研究及在体育场挑蓬结构中的应用[D].北京:北京工业大学,2003.
[2]刘海卿,李忠献,陈海泉.基于SMA复合橡胶支座的建筑结构自适应隔震[J].振动工程学报,2004(增刊):1061-1064.
[3]刘海卿.SMA绞线-叠层橡胶复合支座及其隔震性能研究[D].天津:天津大学,2007.
[4]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[5]张玉敏.碟形弹簧竖向隔震装置的试验研究[D].唐山:河北理工大学,2005.
[6]孟庆利.基底隔震混合控制和三维隔震系统研究[D].哈尔滨:中国地震局工程力学研究所,2006.
[7]曹资,薛肃铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
[8]胥传喜,钱若军.隔震技术及其在空间网格结构中的应用[C]//第六届空间结构学术会议论文集.北京:地震出版社,1992:965-969.
[2]刘海卿,李忠献,陈海泉.基于SMA复合橡胶支座的建筑结构自适应隔震[J].振动工程学报,2004(增刊):1061-1064.
[3]刘海卿.SMA绞线-叠层橡胶复合支座及其隔震性能研究[D].天津:天津大学,2007.
[4]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[5]张玉敏.碟形弹簧竖向隔震装置的试验研究[D].唐山:河北理工大学,2005.
[6]孟庆利.基底隔震混合控制和三维隔震系统研究[D].哈尔滨:中国地震局工程力学研究所,2006.
[7]曹资,薛肃铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
[8]胥传喜,钱若军.隔震技术及其在空间网格结构中的应用[C]//第六届空间结构学术会议论文集.北京:地震出版社,1992:965-969.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心