Structural rehabilitation using high damping rubber bearing (HDRB)

Ali Vatanshenas, Takahiro Mori, Nobuo Murota

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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.
Original languageEnglish
Pages (from-to)49-57
Number of pages9
JournalBulletin of the New Zealand Society for Earthquake Engineering
Volume54
Issue number1
DOIs
Publication statusPublished - 1 Mar 2021
Publication typeA1 Journal article-refereed

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