装有3DB的三维隔震建筑的平扭-竖向地震反应分析  

Analysis of Lateral-Tensional and Vertical Seismic Response for Base Isolated Building with 3DB Isolator

作　　者：熊世树[1] 唐建设[1] 梁波[1] 唐家祥[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《工程抗震与加固改造》2004年第5期17-22,共6页Earthquake Resistant Engineering and Retrofitting

摘　　要：首先提出了一种铅芯橡胶碟簧三维隔震支座 (3DB)。它由铅芯叠层橡胶支座LRB和加有阻尼材料的碟形弹簧支座DSB串联组成 ,能有效地解决三维隔震支座竖向阻尼的难题 ,并可以有效地抑制摇摆。然后 ,建立了3DB三维隔震框架结构多维地震反应的分析模型和运动方程 ,并以一栋五层 3DB三维基础隔震框架结构为例 ,对其多维地震反应进行了仿真分析。研究结果表明 ,本文提出的 3DB能简单有效地解决建筑结构的三维基础隔震问题 ,装有 3DB的隔震建筑的多维地震反应降低了 5 0In this paper is introduced the three-dimension lead-rubber dish-spring bearing (3DB), composed of lead rubber bearing (LRB) and dish-spring bearing with damper (DSB) in series, which is found effective at vertical damping of 3D isolation bearing and suppressing oscillation. The analytical model of multi-dimension seismic responses and the motion equation for 3D base isolated frame structure have been established. Taking a five-story frame structure as an example, the extensive simulation analysis is carried out. The results show that 3D isolation problem of building can be solved easily and effectively with the proposed 3DB, and the multi-dimension seismic responses of isolated building with the 3DB can reduce at least 50% compared to that of non-isolated building.

关 键 词：三维基础隔震 三维隔震支座 多维地震反应 铅芯橡胶支座 碟形弹簧支座 

分 类 号：TU311.3[建筑科学—结构工程]