箍筋对核心混凝土有较强的约束作用,能减少构件最终发生突然脆性破坏的可能性,提高其承载力和延性。箍筋在斜截面抗剪中起非常重要的作用,配箍率过小或箍筋间距过大,构件一旦出现斜裂缝,可能导致箍筋屈服、拉断而发生斜拉破坏;特别是受扭构件,当其已形成多条裂缝后,如果说纵向钢筋相当于桁架结构中的“受拉弦杆”,那箍筋则是“受拉竖向腹杆”。1.随意减少箍筋数量的情况多发生在梁柱节点的交叉部位,因为此处钢筋密 Hoop reinforcement has a strong restraint effect on the core concrete, which can reduce the possibility of sudden brittle failure of the component and increase its bearing capacity and ductility. Hoop reinforcement plays a very important role in the shear of diagonal section. If the stirrup ratio is too small or the stirrup spacing is too large, the diagonal cracks in the member may cause the stirrups to yield and pull off to cause the cable-stayed failure. In particular, After the member has formed a plurality of cracks, if the longitudinal reinforcement is equivalent to the “tensioned chord” in truss structure, then the stirrup is “tensioned vertical web.” 1. Free to reduce the number of stirrups occur at the intersection of beam and column nodes, because here dense steel