Evaluating the Accuracy of an Equivalent Linear Model in Predicting Peak Displacement of Seismic Isolation Systems using Single Friction Pendulum Bearings

Author:

Nguyen Thanh-Truc,Dao Nhan DinhORCID

Abstract

This study evaluates the accuracy of an equivalent linear model in predicting peak nonlinear time-history displacement of seismic isolation systems with single friction pendulum bearings. To perform this evaluation, dynamic response of numerical models of 120 isolation systems subjected to 390 strong earthquake ground motions, including motions with pulse and motions without pulse, was analyzed and statistically processed. The results show that the equivalent linear model can partly predict the peak displacement of its counterpart nonlinear model. However, the equivalent model can also underestimate or overestimate the peak displacement. On average sense, the equivalent linear model underestimates small peak displacement and overestimates large peak displacement. It is also observed that the relationship between linear and nonlinear peak displacements depends on ground motion types. Based on the analysis data, equations representing relationship between linear and nonlinear peak displacements at different reliable levels for different ground motion types were proposed. These equations can be used in practice.

Publisher

Periodica Polytechnica Budapest University of Technology and Economics

Subject

Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Seismic response of base-isolated buildings: exploring isolator properties;Asian Journal of Civil Engineering;2024-04-15

2. A critical assessment of the design displacements of friction pendulum systems;Soil Dynamics and Earthquake Engineering;2024-02

3. Practical Equations for Predicting Maximum Displacement of Single Friction Pendulum Isolation Systems;Practice Periodical on Structural Design and Construction;2022-08

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