Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)
- Volume 6 Issue 1
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- Pages.179-191
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- 2002
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- 2234-6937(pISSN)
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- 2287-6979(eISSN)
Seismic Nonlinear Damage Assessment and Retrofit Strategies for Existing Bridges with Isolation System using Retrofit Slate Function
비선형 내진 손상도 평가 및 보강상태함수를 이용한 기존교량의 내진 보강 전략
- Received : 2001.08.10
- Published : 2002.01.31
Abstract
This paper presents a systematic approach to the seismic nonlinear analysis and retrofit strategies for existing bridges with isolation system using retrofit slate function newly proposed in this study. A seismic retrofit scheme using sliding base isolation system was presented to reduce the seismic hazard for bridge structures. In this study, two types of isolation systems such as lead bearings and sliding isolators were used. The behavior of sliding isolators was modeled by a triaxial interaction model. And three types of earthquakes such as El Centro, San Fernando, and the artificial were used as earthquake ground excitations. Seismic response analyses of the bridge before and after retrofit were effectively carried out by using a three-dimensional nonlinear seismic analysis program, IDARC-Bridge. Also, this paper proposes a retrofit state function for easily representing the efficiency of a retrofit scheme.
Keywords
- Seismic Nonlinear Analysis;
- Retrofit Strategies;
- Isolation System;
- Retrofit State Function;
- Lead Rubber Bearings;
- Sliding Isolator;
- IDARC-Bridge