Responses of Building Base Isolated With High Damping Rubber Bearings
Nguyen Anh Dung1, Quang Hung Nguyen2
1Nguyen Anh Dung, Thuyloi University, 100000 Ha noi, Vietnam.
2Quang Hung Nguyen, Thuyloi University, 100000 Ha noi, Vietnam.

Manuscript received on 30 June 2019 | Revised Manuscript received on 05 July 2019 | Manuscript published on 30 July 2019 | PP: 1287-1292| Volume-8 Issue-9, July 2019 | Retrieval Number: I8205078919/19©BEIESP| DOI: 10.35940/ijitee.I8205.078919
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Abstract: Seismic isolation is one of the most efficient techniques to protect structures against earthquakes. Rubber bearings are suitable for low-rise and medium-rise buildings due to its durability and easy fabrication. This paper presents the hori-zontal response of a six-storey base-isolated building using high damping rubber bearings (HDRB) under two ground motions of earthquakes as types I and II in JRA (2002) by finite element analysis. In this analysis, these bearings are mod-elled by the bilinear hysteretic model which is indicated in JRA and AASHTO. Comparison of horizontal response including base shear force and roof level acceleration between the two cases: base-isolated building and fixed-base building is carried out to evaluate the effectiveness of the use of HDRB on the protection of buildings from earthquakes. The numerical results show that the peak value of roof floor acceleration of the fixed-base building is two times higher than that of the base-isolated building, and the floor accelerations depend on the peak values of ground acceleration. In addition, the step-by-step design procedure for deter-mining the size of HDRBs used for buildings is also presented in this paper.
Keywords: High damping rubber bearings; seismic responses; earthquakes; buildings.

Scope of the Article: Swarm Intelligence