Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Experimental study on a Cantilever Type Metallic Damper for Seismic Retrofit of Building Structures

건물의 내진보강을 위한 캔틸레버타입 강재댐퍼의 실험

  • 안태상 (DRB동일 면진제진기술연구소) ;
  • 김영주 (DRB동일 면진제진기술연구소) ;
  • 박진화 (DRB동일 면진제진기술연구소) ;
  • 김형근 (SH공사 도시연구소) ;
  • 장동운 (쌍용건설 건축기술부) ;
  • 오상훈 (부산대학교 건축학부)
  • Received : 2012.01.31
  • Accepted : 2012.04.02
  • Published : 2012.04.27
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Abstract

The use of seismic energy-dissipative devices for passive control is increasing exponentially in the recent years for both new and existing buildings. Use of these devices started in and has been somewhat limited to developed countries. One of the current challenges is to promote the use of seismic dampers in earthquake-prone developing countries by lowering the cost of the devices. This paper proposed a new type of seismic damper based on yielding of a cantilever type metallic element for seismic retrofit of existing and new building structures. The hysteretic behavior and energy dissipation capacity of the proposed damper was investigated using component tests under cyclic loads. The experimental results indicated that the damping device had stable restoring force characteristics and a high energy dissipation capacity. Based on these results, a simple hysteretic model for predicting the load-displacement curve of the seismic damper was proposed.

최근에 신축 건물이나 기존 건물의 내진보강을 위해서 수동제진장치의 일종인 에너지소산형 제진장치의 사용이 매우 증가하고 있다. 제진장치는 선진국을 중심으로 개발되어 왔고 제한적으로 사용해 오고 있었지만, 최근에는 다소 저렴한 장치개발을 통하여 강진지역의 개발도상국으로도 그 사용이 확대되고 있다. 본 연구는 기존 또는 신축 건물의 내진보강을 위한 캔틸레버타입 강재댐퍼를 개발하고 제안하였다. 댐퍼에 대한 반복가력 실험을 바탕으로 이력거동 및 에너지소산능력을 조사하였다. 실험결과는 제진장치가 안정된 이력특성을 나타내고 있으며 큰 에너지소산능력을 갖고 있음을 보여준다. 실험결과를 바탕으로 댐퍼에 대한 간단한 하중-변위 이력모델을 제안하였다.

Keywords

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