고장력철근을 사용한 철근콘크리트 내부 보-기둥 접합부 내진성능에 대한 실험적 연구

Performance of RC(Reinforced-concrete) beam-column joints exposed to the earthquake loadings has been determined by shear and bond strength mechanism. However, since the quality of shear and bond strength show very brittle performance for cycle loadings, the column and the connection should maintain elastic condition through plastic hinges occurred in the vicinities of beam-column joints which should dissipate the energy from the earthquake. This study was scrutinized for the seismic performance of 6 RC beam - column joints with the high strength reinforcements(700Mpa) compared to 3 RC beam-column joints with the ordinary strength reinforcements(400Mpa) based on the design and detailing requirements in the ACI 318-05 Provisions and KCI-07 appendix Ⅱ. The main parameters including ductility, strength, stiffness and failure mechanisms were considered to account for the beam-column joint strength.