Flexural Performance of U-Shaped Precast Concrete Beams with Non-Contact Lapped Splice
In this study, new moment-resisting precast concrete beam-column joint is proposed for moderate seismic regions. The new joint includes the connection reinforcing bars, penetrated the joint and lap-spliced with the bottom bars of precast U-beam. To evaluate the performance for non-contact lapped splice, experimental and analytical work were conducted, for major variables of the length of lap and the diameter of connection reinforcing bars(D19, D22, and D25). Results of experimental and analytical works show that these variables have much influence on flexural strength and ductility, and deformation of lapped joint. Using nonlinear finite element method, analytic research was performed for investigating crack and fracture patterns, load-deflection curve, comparison of internal force, evaluation of ductility, stains of reinforcement bar.
H.S. Lee, I.S. Yoon and M.H. Aliabadi
S. S. Ha and S. H. Kim, "Flexural Performance of U-Shaped Precast Concrete Beams with Non-Contact Lapped Splice ", Key Engineering Materials, Vols. 385-387, pp. 349-352, 2008