高层建筑顶部旋转结构地震响应及隔震措施研究  

Seismic Response and Seismic Isolation Mechanism of a Top Rotational System in a High-Rise Structure

作　　者：刘怡鹏[1] 辛灏辉[1] 陈宏敏[1] 南文文[1] 

机构地区：[1]同济大学土木工程学院,上海200092

出　　处：《结构工程师》2011年第5期129-134,共6页Structural Engineers

基　　金：国家大学生创新性实验计划(0200107110)

摘　　要：介绍构造的高层建筑顶部旋转结构的隔震系统,由弹性隔震支座和阻尼器构成。在试验中,这一隔震体系采用橡皮支座和小型液体阻尼器模拟。通过对结构频率、振幅、质量的调整以及对于支座、阻尼的布置与数量的变换,由试验获取加速度放大系数、自振频率等数据,经对试验数据进行的统计、比较、计算与分析,得出了该系统的振动特性。试验表明在一定条件下,所提出的隔震构造对上部旋转结构以及下部高层结构具有良好的隔震效果。The seismic isolation mechanism of a top rotational system in a high-rise structure consists of the elastic supports and the dampers,which were simulated with rubber bearings and miniature liquid dampers in the experiment.Through the calculation,comparison,statistics and analysis of the data according to the consequence of a great number of experiments,whose forms varied from the different frequency,amplitude and mass,to the different allocation or the number of elastic supports and dampers,the acceleration magnification factor,damping coefficients and natural frequency were generated,which helped to draw the conclusion that the anti-seismic systems able to provide positive effects for both the top rotational system and the lower high-rise structure.

关 键 词：旋转建筑 隔震系统 调频质量阻尼器 反应谱分析 加速度衰减系数 

分 类 号：TU352.12[建筑科学—结构工程]