宿迁市人防指挥大楼隔震设计方法研究

Research on the design method of base-isolated structure of Suqian Renfang Zhihui Building

宿迁市人防指挥大楼位于地震高烈度区,钢筋混凝土框架-剪力墙结构,地上13层,高48.9m。该工程采用基础隔 震技术设计,为我国目前最高的隔震建筑之一。隔震层布置在地下室顶板和±0.00楼面之间,由橡胶隔震支座、滑移支座 和粘滞阻尼器组成,共采用了53只橡胶隔震支座、12只滑移支座,沿结构的两个主轴方向共设置4只非线性粘滞阻尼 器。分析结果表明,采用基础隔震措施可显著降低上部结构的地震作用;设置粘滞消能器能较好地解决降低上部结构地震 作用和限制隔震层位移之间的矛盾。在本工程中采用基础隔震技术,具有明显的技术经济效益。

Suqian Rengfang Zhihui Building is a 13 story reinforced concrete frame-shear wall structure with a height of 48.9 m and located in a region of high earthquake intensity. The building is one of the highest base-isolated building in China, its isolation devices consist of 53 laminated rubber bearings, 12 friction sliding bearings and 4 viscous dampers lying on the top of the basement. Calculation results of the nonlinear space time-history analysis by SAP2000 software showed that the horizontal earthquake action upon the superstructure can be greatly reduced by using the base isolation technique, the viscous dampers can effectively restrict the displacement of isolation layer meanwhile reduce the earthquake action of superstructure. Using the base isolation technique in this project demonstrates obvious technical and economic benefit.