Structural rehabilitation using high damping rubber bearing (HDRB)

  • Ali Vatanshenas Tampere University, Tampere
  • Takahiro Mori Bridgestone Corporation, Yokohama
  • Nobuo Murota Bridgestone Corporation, Yokohama

Abstract

High damping rubber bearings show highly nonlinear stress-strain behaviour. Deformation-history integral (DHI) model which can estimate small strain stiffness degradation and nonlinear plasticity via a relatively simple innovative formulation is implemented in this study to model HDRB as the rehabilitation method for a seismically vulnerable building. Considered structure in this study is a three-dimensional, four-story steel frame residential building with a concentrically braced system. Nonlinear direct integration time history analysis and plastic hinges approach were implemented to evaluate structural behaviour of considered structure. It was observed that structural responses enhanced significantly after rehabilitation. Absolute maximum base shear values decreased 61.8% and 92.2% in the worst and best cases, respectively. Most of structural elements remained elastic after rehabilitation and required performance level was satisfied.

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Published
2021-03-01
How to Cite
Vatanshenas, A., Mori, T., & Murota, N. (2021). Structural rehabilitation using high damping rubber bearing (HDRB). Bulletin of the New Zealand Society for Earthquake Engineering, 54(1), 49-57. https://doi.org/10.5459/bnzsee.54.1.49-57
Section
Articles