외부보강 원형강봉댐퍼 시스템 적용 2층 철근콘크리트 골조의 내진성능 평가를 위한 반복횡하중 가력 실험

With the frequency of earthquakes occurring in Korea increasing recently, it is necessary to develop a new efficient damping system with increasing resilience and energy dissipation that reduce residual deformation and increase usability. In this study, steel cylinder damper system installed at side of building to reduce torsion and lateral displacement for existing RC structures with non-seismic detail(e. g. school) is suggested and is experimented to evaluate seismic performance. Comparing the experiment result of non-retrofitted and retrofitted specimens, it is confirmed that the external steel cylinder damper system increases the rigidity and the energy dissipation of two-storied RC Structure Frame. It is also confirmed that steel cylinder damper could absorb seismic forced by dissipating seismic energy.