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Title |
Effect of Flexural Performance on U-Shaped Precast Concrete Beams with Noncontact Lapped Splice
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Keywords |
연결재 ; 비접촉 겹침이음 ; 프리캐스트 콘크리트 ; U형 보 Connection reinforcing bar ; Noncontact lapped splice ; Precast concrete ; U-shaped beam |
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Abstract |
In this study, new moment-resisting precast concrete beam-column joint is proposed for moderate seismic regions. It has the connection reinforcing bars, penetrated the joint and lap-spliced with the bottom bars of precast U-shaped PC beam. To evaluate the performance for noncontact lapped splice, experimental and analytical works were conducted. Major variables for tests are the length of lap, the diameter of connection reinforcing bars, and the distance between lapped bars. Analytic research was performed nonlinear finite element method. Analytic research focused on crack pattern, load-deflection curve, comparison of internal force, evaluation of ductility strains of reinforcement bar. Results of experimental and analytical works show that the these variables has much influence on flexural strength and ductility, and joint behavior.
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