Experimental study on an irregular bridge with polynomial friction pendulum isolators

T. Y. Lee, L. Y. Lu, J. W. Tso

研究成果: Conference contribution

摘要

In this study the effectiveness of Polynomial Friction Pendulum Isolators (PFPIs) for the isolated bridge with columns of irregular height is investigated using shaking table testing. A single-span model bridge was designed and built, and two sets of PFPI prototype isolators were fabricated. Compared with typical isolated bridges, the isolated bridges with columns of irregular heights result in different seismic response at each column. The experimental results show that the hysteresis loops of the prototype PFPIs agree well with the theoretical ones predicted by numerical simulation. The analytical displacements are almost identical to the experimental data. Moreover, the test results also demonstrate that when the parameters of the PFPIs are proportionally designed, the PFPIs are able to effectively decrease the maximum shears at the base of the irregular columns which are induced by a near-fault earthquake. In addition, it is difficult to determine the parameters of the PFPIs at each irregular column. The PSO-SA hybrid searching algorithm is thus adopted to explore the optimum parameters of the PFPIs through numerical analysis. With the proper selection of the objective function, the maximum moment at the base of each column can be uniform satisfactorily.

原文English
主出版物標題11th National Conference on Earthquake Engineering 2018, NCEE 2018
主出版物子標題Integrating Science, Engineering, and Policy
發行者Earthquake Engineering Research Institute
頁面3150-3160
頁數11
ISBN(電子)9781510873254
出版狀態Published - 2018
事件11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018 - Los Angeles, United States
持續時間: 2018 6月 252018 6月 29

出版系列

名字11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy
5

Conference

Conference11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018
國家/地區United States
城市Los Angeles
期間18-06-2518-06-29

All Science Journal Classification (ASJC) codes

  • 岩土工程與工程地質

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