[2004] EFFECT OF REINFORCEMENT ARRANGEMENT ON STRUCTURAL PERFORMANCE OF DAPPED-END BEAMS
Keywords:dapped-end beams、reinforcement arrangement、structural performance、structural design
The structural performance of dapped-end beams, reinforced with either diagonal or hanger rebars in the disturbed region, is investigated through nonlinear finite element analysis. The results indicate that a dapped-end beam reinforced with diagonal rebars shows greater capacity, stiffness, and crack restraint compared to one reinforced with hanger rebars. However, excessive horizontal cracking at the re-entrant corner may occur when using only diagonal rebars under higher load levels. Therefore, an enhanced structural design of the dapped-end beam is suggested by integrating both diagonal and hanger rebars.