自复位摇晃式支座运用于建筑隔震之可行性研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (8) : 68-78.

论文

自复位摇晃式支座运用于建筑隔震之可行性研究

郑锦铜1，江铭鸿2,3

作者信息 +

Application of Self-centering Rocking Bearing on the Isolation of Buildings

Chin-Tung Cheng 1 Ming-Hung Jiang 2,3

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文章历史 +

摘要

运用摇晃（Rocking）及滚动（Rolling）机制研发了一种新型隔震支座，称作自复位摇晃式隔震支座（Self-centering Rocking Bearing，简称SCRB），根据该支座力与位移关系，建立了以其作为隔震组件之隔震建筑理论运动模型；并以其滚动曲面半径、高宽比（Aspect Ratio）及上部结构自振周期作为研究参数，对SCRB隔震结构受自由振动、简谐力、地震地表加速度扰动进行数值分析。结果显示，经适当设计之SCRB隔震结构不具固定振动周期，不会被特定之扰动频率锁定而引发共振；在受大地震时，能有效降低上部结构之加速度反应，亦能减少层间变位（Drift），可用于建筑隔震。

Abstract

In this research, a new type of isolated bearing referred to as self-centering rocking bearing, SCRB), which applies rocking and rolling mechanism of the bearing, is promoted. A theoretical model for the isolated structure equipped with this bearing is constructed to simulate the relation of force and displacement under excitations. Investigated parameters include diameter of rolling surface, aspect ratio and vibrating frequency of the superstructure. Numerical analysis is proceeded to investigate the performance of the structure under the excitations of free, harmonic and earthquake type vibrations. Calculated results indicate that the appropriately designed structure with SCRB vibrates without resonance for any particular frequency, in other words, the isolated structure does not have fixed natural frequency. The acceleration and displacement of isolated structure are all significantly reduced under the excitation of strong earthquake to manifest the feasibility of SCRB applied on the isolation of buildings.

导出引用

郑锦铜;江铭鸿;. 自复位摇晃式支座运用于建筑隔震之可行性研究[J]. 振动与冲击, 2013, 32(8): 68-78

Chin-Tung Cheng Ming-Hung Jiang;. Application of Self-centering Rocking Bearing on the Isolation of Buildings[J]. Journal of Vibration and Shock, 2013, 32(8): 68-78