一、箍筋的主要作用1.提高混凝土的抗压强度当配有螺旋形或环形箍筋的构件受压时,混凝土的侧向扩张受到箍筋的限制,箍筋因此而产生了环向拉应力,其反作用力使被箍筋约束的核心部分的混凝土受到均匀的径向压应力作用。核心部分混凝土由一维受压状态变为三维受压状 First, the main role of stirrups 1. To improve the compressive strength of concrete When equipped with spiral or annular stirrups, the lateral expansion of the concrete is limited by the stirrups, stirrups and thus generated a ring pull The stress, its reaction force causes the concrete in the core part constrained by the stirrups to be subjected to uniform radial compressive stress. Core concrete changes from one-dimensional compression to three-dimensional compression