Ultimate Shear Strength and Collapse Behavior of RC and SRC Members

钢筋混凝土(RC)柱和型钢混凝土(SRC)柱在地震力作用下经常出现剪切裂缝，强度急剧下降，建筑物破坏严重。本文对钢筋混凝土和型钢混凝土构件的极限抗剪强度和倒塌性能进行了研究，得到了以下结果：1)假定钢筋混凝土和型钢混凝土构件的极限抗剪强度公式和倒塌抗剪强度公式不同于现有的抗剪强度公式。2)进行了钢筋混凝土和型钢混凝土柱的剪切破坏试验，验证了所提公式的正确性。3)假定主筋和钢材在粘结作用下的塑性铰，并考察了塑性铰间距。

Shear cracks often occurs and the strength deteriorates abruptly in reinforced concrete (RC) columns and steel reinforced concrete (SRC) columns subjected to earthquake force, and buildings are damaged severely. In this studyon ultimate shear strength and collapse behavior of RC and SRC members, obtained resultsare as follows:1) Ultimate shear strength formulae and collapse shear strength formulae was proposed by assuming shear collapsemechanism, different from the present shear strength formulae.2) Shear failure test of RC and SRC columns was performed, and the validity of proposed formulae was testified.3) Plastic hinges of main reinforcedbars and the steel due to dowel action was assumed, and the distance between plastic hinges were investigated.