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자료유형
학술저널
저자정보
Farsangi, Ehsan Noroozinejad (Department of Earthquake Engineering, Graduate University of Advanced Technology [KGUT]) Tasnimi, Abbas Ali (Department of Civil and Environmental Engineering, Tarbiat Modares University) Yang, T.Y. (International Joint Research Laboratory of Earthquake Engineering, Tongji University) Takewaki, Izuru (Department of Architecture and Architectural Engineering, Kyoto University) Mohammadhasani, Mohammad (Seismology Engineering & Risk Department, Road, Housing & Urban Development Research Center [BHRC])
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제22권 제4호
발행연도
2018.1
수록면
383 - 397 (15page)

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Traditional base isolation systems focus on isolating the seismic response of a structure in the horizontal direction. However, in regions where the vertical earthquake excitation is significant (such as near-fault region), a traditional base-isolated building exhibits a significant vertical vibration. To eliminate this shortcoming, a rocking-isolated system named Telescopic Column (TC) is proposed in this paper. Detailed rocking and isolation mechanism of the TC system is presented. The seismic performance of the TC is compared with the traditional elastomeric bearing (EB) and friction pendulum (FP) base-isolated systems. A 4-storey reinforced concrete moment-resisting frame (RC-MRF) is selected as the reference superstructure. The seismic response of the reference superstructure in terms of column axial forces, base shears, floor accelerations, inter-storey drift ratios (IDR) and collapse margin ratios (CMRs) are evaluated using OpenSees. The results of the nonlinear dynamic analysis subjected to multi-directional earthquake excitations show that the superstructure equipped with the newly proposed TC is more resilient and exhibits a superior response with higher margin of safety against collapse when compared with the same superstructure with the traditional base-isolation (BI) system.

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