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为满足小跨高比连梁承载力、延性及耗能的要求,同时避免由于钢筋密集导致的施工困难,采用纤维增强混凝土(FRC)代替普通混凝土作为连梁基体,完成了4个对角斜筋小跨高比FRC连梁试件与1个混凝土连梁对比试件的拟静力试验,分析其破坏过程、破坏形态、承载能力、变形能力和耗能能力等。分析结果表明:FRC可提高连梁的承载力、延性和耗能能力;对角斜筋FRC连梁在主斜裂缝出现前,已具有很高的受剪承载力和变形能力以及良好的抗损伤能力,能够满足强震下的承载力和变形需求,强震后无需修复或稍加修复即可继续使用。
In order to meet the requirements of bearing capacity, ductility and energy dissipation of beams with small span ratio, at the same time, to avoid the construction difficulties caused by intensive reinforcement, FRC was used instead of ordinary concrete as the connecting beam. Four diagonal diagonal Quasi-static test of FRC beam-beam specimen and a concrete-connected beam, and analyze the failure process, failure mode, bearing capacity, deformation capacity and energy dissipation capacity. The results show that FRC can improve the bearing capacity, ductility and energy dissipation capacity of the beam. The diagonal slab FRC coupling beam has high shear capacity and deformation capacity and good resistance to damage Ability to meet the strong earthquake bearing capacity and deformation requirements, no need to repair after a strong earthquake or a little repair can continue to use.