Design of isolated bridges using Polynomial Friction Pendulum Isolator

T. Y. Lee, L. Y. Lu, K. J. Chung

研究成果: Conference contribution

摘要

This paper is aimed to develop a design procedure of Polynomial Friction Pendulum Isolator (PFPI), a various-frequency sliding isolator, for decreasing the seismic responses of isolated bridges. Although sliding isolators have been widely used to mitigate seismic hazard, it may be not effective in decreasing the seismic responses of isolated structures subjected to near-field ground motions. The sliding surface of the PFPI is defined by a sixth-order polynomial function to avoid resonance under nearfield ground motions. The restoring stiffness of the PFPI possesses softening section as well as hardening section. The structural acceleration response can be decreased by decreasing the restoring stiffness in softening section while the structural displacement response can be decreased by increasing the restoring stiffness in hardening section. However, it is difficult to determine the design parameters of PFPI in practical implementations. This study proposes a design procedure for the PFPI based on the bridge seismic design code in Taiwan. Designers can follow this procedure to easily design the bridge with PFPIs which satisfies the requirements of the code. The bridge with PFPIs designed by using this procedure is analyzed to realize the dynamic nonlinear responses of the bridge under artificial strong earthquake. The results show that the PFPIs effectively decrease the seismic responses of isolated bridges as compared with non-isolated bridges.

原文English
主出版物標題ISEC 2015 - 8th International Structural Engineering and Construction Conference
主出版物子標題Implementing Innovative Ideas in Structural Engineering and Project Management
編輯Swapan Saha, Yixia X. Zhang, S. Yazdani, Amarjit Singh
發行者ISEC Press
頁面169-174
頁數6
ISBN(電子)9780996043717
DOIs
出版狀態Published - 2015
事件8th International Structural Engineering and Construction Conference: Implementing Innovative Ideas in Structural Engineering and Project Management, ISEC 2015 - Sydney, Australia
持續時間: 2015 11月 232015 11月 28

出版系列

名字ISEC 2015 - 8th International Structural Engineering and Construction Conference: Implementing Innovative Ideas in Structural Engineering and Project Management

Other

Other8th International Structural Engineering and Construction Conference: Implementing Innovative Ideas in Structural Engineering and Project Management, ISEC 2015
國家/地區Australia
城市Sydney
期間15-11-2315-11-28

All Science Journal Classification (ASJC) codes

  • 建築與營造
  • 土木與結構工程

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