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Effect of Flexural Performance on U-Shaped Precast Concrete Beams with Noncontact Lapped Splice  

Ha, Sang-Su (한경대학교 건설공학연구소)
Kim, Seung-Hun (한밭대학교 건축공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.12, no.6, 2008 , pp. 119-128 More about this Journal
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.
Keywords
Connection reinforcing bar; Noncontact lapped splice; Precast concrete; U-shaped beam;
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