Analysis of fatigue crack growth in reinforced concrete beams

摘要: Mechanical behavior of reinforced concrete members is influenced by the action unknown crack bridging reactions rebars. Under cyclic loading, due to progressive growth cracks, this contributes overall strength, stiffness and hysteretic member. In work, fatigue beams are studied using a propagation law, developed dimensional analysis for plain with effect reinforcement being simulated through constraint exerted on opening. The parameters considered in model fracture toughness, length, loading ratio structural size. A numerical procedure followed compute life RC dissipated energy steel shake down phenomenon under loading. Through sensitivity study, it concluded that size most sensitive parameter phenomenon. Furthermore, residual moment carrying capacity an member determined as function extension including bond-slip mechanism.