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구조물의 회복탄력성 기반 성능평가법에 대한 고찰 및 적용 방안에 관한 연구
김유성,강주원,이준호,Kim, Yu-Seong,Kang, Joo-Won,Lee, Joon-Ho 한국공간구조학회 2020 한국공간구조학회지 Vol.20 No.4
The resilience performance evaluation method of a structure can evaluate the ability to recover after an earthquake disaster, and this study deals with the consideration and introduction of the resilience performance evaluation method. The resilience evaluation method can be expressed as a quantified number by constructing a loss estimation model and a recovery evaluation model. The recovery evaluation model should consider downtime in addition to the repair time, and the loss estimation model should consider not only direct loss to structures and non-structures, but also indirect loss due to functional loss of the building. In addition, to build a loss estimation model, the structure should be simplified to perform an efficient analysis. Therefore, in this study, the equivalent terminal induction system proposed cantilever-type and rahmen-type SDOF, and it is evaluated somewhat conservatively compared to the example structure, and it is judged that there is a need to improve the hysteresis characteristics by applying the stiffness reduction factor of the SDOF model.
공업용 플라스틱으로 보강된 비좌굴가새의 실험적 구조성능평가
김유성,김기철,강주원,이준호,Kim, Yu-Seong,Kim, Gee-Chul,Kang, Joo-Won,Lee, Joon-Ho 한국공간구조학회 2020 한국공간구조학회지 Vol.20 No.3
In this study, the Buckling restrained braces reinforced with engineering plastics that can compensate for the disadvantages in the manufacturing process of the existing buckling restrained brace. The proposed PC-BRB was fabricated to evaluate the reinforcement effect by carrying out a structural performance test and a full-scale two-layer frame test through cyclic loading test. As a result of PC-BRB's incremental and cyclic loading test, stable hysteresis behavior was achieved within the target displacement, and the compressive strength adjustment coefficient satisfied the recommendation. As a result of the real frame experiment, the strength of the reinforced specimen increased compared to the unreinforced specimen, and the ductility and energy dissipation increased.
공업용 플라스틱의 선조립형 비좌굴가새로 보강한 건축물의 내진 성능 평가
김유성,박병태,이준호,Kim, Yu-Seong,Park, Byung-Tae,Lee, Joon-Ho 한국공간구조학회 2021 한국공간구조학회지 Vol.21 No.4
The precast-buckling restrained braces(PC-BRB) reinforced with engineering plastics that can compensate for the disadvantages in the manufacturing process of the existing buckling restrained brace. In this study, to examine the applicability of PC-BRB to actual structures, example structures similar to school facilities were selected and the reinforcement effect was analyzed analytically according to the damping design procedure of PC-BRB. Load-displacement curve through the incremental loading test appeared similar to the bilinear curve. Applying test result, Analytical model of PC-BRB model was constructed and applied to the example structure. As a result of the analysis, the PC-BRB showed stable hysteresis behavior without lowering the strength, and the inter story drift ratio and the shear force were reduced due to the damping effect. In addition, the reduction ratio of the shear force was similar to the reduction ratio assumed when designing the damping device.