樓房摩擦單擺支承隔震研究

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题名:	樓房摩擦單擺支承隔震研究
作者:	郭宏鑫;Ho-Xin Guo
贡献者:	土木工程研究所
关键词:	摩擦單擺支承;friction pendulum bearing
日期:	2001-01-15
上传时间:	2009-09-18 17:06:40 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	本文主要在探討安裝摩擦單擺支承之樓房結構之受震行為；在受不同的地震力下，以數值模擬方式，分析摩擦單擺支承對提昇樓房耐震能力之效果。在本研究中，以有限元素分析程式，配合Newmark-β逐步積分法進行討論，輸入不同特性之地震?時記錄，包括EL Centro、JIJI、Kobe 與Mexico地震，並考慮不同摩擦單擺支承的摩擦係數與曲率半徑。研究結果顯示，安裝摩擦單擺支承之樓房，受震後樓層之絕對位移有放大情況，但樓層所受之柱剪力有減小的情況，以摩擦係數較小、曲率半徑較大之摩擦單擺支承，提升樓房耐震能力較佳。但在受Mexico地震力時，樓房所受剪力會增加，隔震效果很差，值得注意。 The objective of the present study is to investigate the seismic behavior of a building that is set friction pendulum bearing. By using numerical model, analyzing the effect of friction pendulum bearings promote the building's capability of seismic resistance during different earthquake. In the study, using finite element analytic code to discuss cases with Newmark-β method. Entering different earthquake history records, including EL Centro earthquake, JIJI earthquake, Kobe earthquake and Mexico earthquake, and considering different frictional coefficients and radiuses of curvature of friction pendulum bearings. The results indicate that the stories' absolute displacements are increasing but stories' column shear forces are decreasing for the building, that is set friction pendulum bearing, after exciting. Smaller frictional coefficient and larger radius of curvature of friction pendulum bearings have better effects of promoting the building's capability of seismic resistance. But during Mexico earthquake exciting, the stories' column shear forces are increasing. It should be noticed that the effects of base isolation are very bad.
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