4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Optimum Cfrp Length For The Hogging Moment Zone Of Continuous Rc T-beams
Carbon fiber reinforced polymer (CFRP) laminates were proved as very effective method for either repairing or strengthening of used structures. However, the literature has no enough information about the behavior of RC continuous (two-span) T-section beams strengthened with CFRP laminates, especially in hogging moment zone. This paper examines the effect of CFRP laminates lengths, used for strengthening of the hogging moment zone, upon the behavior of such beams, to determine the optimum strengthening length. 3-D theoretical models using the Finite Element (FE) Package ANSYS are used. Very good agreement was found between both proposed FE models and previous experimental research used for the verification of the FE model. Redistribution of moments, energy dissipation and ductility of such beams are examined. It can be concluded that changing the strengthening CFRP length in the hogging moment zone is very effective upon the overall behavior of T-section continuous beams and their reinforcement bars. Finally, a criterion to calculate the optimum CFRP strengthening length and the corresponding anchorage length is included.
Mohammad Mohie Eldin, Ahmed Trabia, Rahma Hasson