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Analytical Study for Optimal Reinforcement Amount and Development of FRP Seismic Reinforcement that can be Emergency Construction

긴급시공이 가능한 FRP 내진보강재 개발 및 최적 보강량 산정을 위한 해석적 연구

  • Received : 2013.06.14
  • Accepted : 2013.08.09
  • Published : 2013.09.30

Abstract

Social interest in the seismic retrofit of the structure is growing massive earthquake that occurred recently. The brittle fracture of Non-seismically designed Columns lead to full collapse of the building. In the past, cross-sectional expansion method, a steel plate reinforcing method is applied mainly in recent years, fiber-reinforced method utilizing the advantages of the composite material are preferred. However, the reinforcement methods such as this, there is a drawback to induce physical damage to structures, and time consuming work space is large. IIn this study, FRP seismic reinforcement was developed using the Aluminum connector and the composite material (Glass Fiber Reinforced Polymer). Then, the optimum quantities of FRP seismic reinforcement was determined using a nonlinear finite element analysis program. Finally, the quantity decision process through the design and analysis of FRP reinforcement was suggested.

최근 발생한 대규모 지진으로 구조물의 내진보강에 대한 사회적 관심도가 높아지고 있다. 특히 내진 설계가 반영되지 않은 기둥은 취성적인 파괴로 구조물 전체붕괴를 유발하기 때문에 내진보강이 적용 되어야한다. 과거에는 단면증설법, 강판보강법등이 주로 적용되었고 최근에는 복합재료의 장점을 이용한 섬유보강법이 선호되고 있다. 그러나 이러한 보강법들은 구조물의 물리적 손상을 유발하며, 작업공간과 시간소비가 크다는 단점이 있다. 본 연구에서는 기존 보강법의 단점을 보강하여 복합재료 (Fiber reinforced polymer)와 Aluminum 체결부 이용한 FRP 내진보강재를 개발하였다. 비선형 유한요소 해석프로그램을 통해 개발된 FRP 내진보강재의 최적 보강량을 결정하였다.

Keywords

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Cited by

  1. An Experimental Study on Seismic Performance Evaluation of Retrofitted Column of FRP Seismic Reinforcement that can be Emergency Construction vol.17, pp.6, 2013, https://doi.org/10.11112/jksmi.2013.17.6.021
  2. Evaluation of Damaged RC Columns with GFRP-Strip Device vol.20, pp.4, 2016, https://doi.org/10.1061/(ASCE)CC.1943-5614.0000650