Experimental investigation on seismic performance of nonlinear soil-structure system using MR dampers
نویسندگان
چکیده
This paper reports the results of an experimental study conducted to demonstrate the feasibility and capability of magneto-rheological (MR) dampers commanded by a decentralized control algorithm for seismic control of nonlinear civil structures considering soil-structure interaction (SSI). A two-story reinforced concrete (RC) frame resting in a laminar soil container is employed as the test specimen, and two MR dampers equipped in the first story are used to mitigate the response of this frame. The energy distribution and cumulative damage evaluation of the test structure are investigated. The results indicate that the MR damper can effectively reduce the response of the soil-structure system, even when the soil-structure system presents complex nonlinear hysteretic behaviour. The robustness of the proposed decentralized control algorithm is validated through the shaking table tests on the soil-structure system with large uncertainty.
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