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框架节点是框架结构中极重要的部位。在工程质量检查中,常发现一些未能引起施工人员重视的问题。1.框架节点柱箍筋遗漏或箍筋间距过疏。众所周知,框架节点柱箍筋主要有以下作用:约束混凝土,提高节点混凝土的强度和变形能力;防止纵筋压曲;承受剪力,防止混凝土剪切破坏;承受反向荷载,防止或延迟混凝土在地震等反复荷载作用下发生低周期疲劳破
The framework node is a very important part of the framework structure. In the inspection of the project quality, some problems have often been found that have not caused construction personnel’s attention. 1. Spacing of stirrups in frame joints or sparse spacing of stirrups. As we all know, the frame joint stirrups mainly have the following functions: constrain the concrete, increase the strength and deformability of the joint concrete; prevent the vertical bar from buckling; withstand the shear force, prevent the shear failure of the concrete; withstand the reverse load, prevent or delay the concrete Low-cycle fatigue failure under earthquake and other cyclic loads