Abstract
본 논문은 PC 텐던 등에 의한 긴장력을 도입하지 않고 일반 철근만을 사용한 프리캐스트 교각의 내진성능을 검증하기 위하여 프리캐스트 교각의 실물모형 내진성능 실험을 실시하였다. 프리캐스트 블록은 축방향 철근 3개를 하나의 홀로 삽입되도록 하여 시공성을 향상시켰다. 프리캐스트 유무와 FRP보강 유무를 실험변수로 하여, 동일한 형상의 3개의 실험체에 대하여 실험을 실시하였고, 파괴형상, 반복 횡하중에 대한 연성능력을 평가하고 각 시험체의 강성저하에 따른 감쇠비, 강성 저감과 소산에너지 등을 비교하였다. 실험결과, 프리캐스트 교각의 시공성과 내진성 및 FRP 보강에 의한 내진성능 향상을 확인할 수 있었다. In this study, the tests of seismic performance for full-scale models of the precast pier were conducted in order to verify the seismic performance of the precast pier using general rebar without introducing prestressing force such as a PC tendon. The constructability of the precast blocks was improved by inserting three rebars on an axis direction into a one hole. The tests for three piers with identical form were carried out, with use of precast and FRP reinforcement as test variables. The ductility for failed shape and cyclic transverse loads was evaluated. The damping ratio, stiffness reduction, and energy dissipation according to reducing stiffness were compared. These tests proved improvement of constructability and seismic performance for precast pier and of seismic performance for FRP reinforcement in their results.
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