90005234

open access

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Optimization of on-off dampers for reducing collision of base-isolated buildings with retaining walls

English (英語)

Proceedings of the 11th National Conference on Earthquake Engineering : integrating Science, engineering, & policy

1227-1227

Earthquake Engineering Research Institute　(EERI)

2018-06-26

2018-09-26

11th U.S. National Conference on Earthquake Engineering : integrating Science, engineering, & policy (June 25-29, 2018), Los Angeles, California. Abstract: An optimized approach for initial clearance length, which is important when using on-off dampers in base-isolated buildings, is proposed. The influence of initial clearance length on the response of a superstructure model to seismic motion is investigated, given that the response may lead to collision with retaining walls. Furthermore, the optimization is configured to uniquely determine values of initial clearance lengths, which are used to minimize the responses of the superstructure model. An experiment is presented that uses a shaking table and on-off dampers with 28 combinations of initial clearance lengths. Comparison of the experimental results with those obtained from numerical analyses shows good agreement with respect to the solution of optimization.

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