SHAKING TABLE TESTS ON SEISMIC RESPONSE OF ISOLATORS FOR HOUSES(Structures)

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  • 住宅用免震部材の地震応答振動台実験(構造)
  • 住宅用免震部材の地震応答振動台実験
  • ジュウタクヨウメンシンブザイ ノ ジシン オウトウ シンドウダイ ジッケン

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Abstract

The high performance of seismically isolated structures during the 1995 Kobe earthquake revealed that seismic isolation systems are very effective on keeping the safety and functions of buildings during major earthquakes. In case of houses, it is generally difficult to elongate the period of the system to the sufficiently effective period by ordinary laminated rubber bearing isolators because of their light weight. In addition to rubber bearings, development and application of sliding and rolling isolators are needed for houses. In this paper, the mechanical characteristics of various kinds of seismic isolators newly developed and the effects on the response of seismically isolated houses are discussed by the shaking table tests of seismically isolated house models. The seismic performance and the validity of seismically isolated houses during strong earthquakes are demonstrated. It is shown that the seismic response of seismically isolated houses is definitely dependent on the mechanical characteristics of isolators, and that rubber, sliding and rolling isolators have their own distinctive features in the seismic response.

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