Performance of Non - Linear E lastomeric Base - Isolated building structure
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Performance of Non - Linear E lastomeric Base - Isolated building structure
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Performance of Non-Linear Elastomeric Base-Isolated building structure

Author: Gomase O.P , Bakre S.V | Size: 506 KB | Format: PDF | Quality: Unspecified | Publisher: INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 2, No 1, 2011 | pages: 12 | ISBN: 0976 – 4399

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The seismic response of multistory building supported on base isolation is investigated under real earthquake time history motion. The force deformation behavior of an isolator is modeled as Bi-linear hysteretic behavior which can be effectively used to model all isolation system in practice. Uniform Building Code (UBC-97) is widely used in design of base isolation systems which contains provision according for near fault effect. In order to investigate the performance of base isolation systems, design according to UBC-97 under near fault earthquake. Non-linear time history analysis of a four storey base isolated building, located at close to an active fault. The isolation system is composed of high damping rubber bearing. Design displacements are estimated using UBC-97 parameter. The building is subjected to 1979 El-Centro, 1995 Kobe and 1994 Northridge earthquakes. The analysis result shows that UBC-97 predicts isolator displacements successfully. Floor acceleration and inter-story drifts of the subject base isolated building are significantly reduced when compared to its fixed base counterpart.

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