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Title |
Inelastic Behavior of Post-tensioned Wide Beam System with different Reinforcement ratios within Column core
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Authors |
최윤철 ; 임재형 ; 문정호 ; 이리형 ; 권기혁 |
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Keywords |
포스텐션 ; 프리캐스트 ; 넓은 보 ; 보-기둥 접합부 post-tensioned ; precast ; wide beam ; beam-column connection |
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Abstract |
Post-tensioned Precast concrete System(PPS) consists of U-shaped precast wide beams and concrete column. The continuity of beam-column joint is provided with floor concrete cast on the PC shell beam and post-tensioning. The purpose of this paper is to evaluate the response of PPS interior beam-column joint subjected to cyclic lateral loading. To this end, an experimental investigation was performed with three half-scale specimens of interior connection. The design parameters are the amount of beam reinforcement placed inside the joint core. The test results showed that cracks were distributed well without my significant degradation of strength and ductility. Also, it was found that the prestressing may affect to alter the torsional crack angle. And the specimens sufficiently resist up to limiting drift ratio of 0.035 in accordance with the provisional by ACl of acceptance criteria for concrete special moment frames.
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