The second crack is a crack originating at the groove weld toe of the column flange-girder flange connection .

第二种是产生于立柱 翼缘与主梁翼 缘 连接处的坡口 焊缝 焊趾处的裂纹。

Improving measures should include : change the nonstructural form of joint remove the notch effect on groove weld in beam flange modify the configuration of sphere corner and strengthen the connection between web and column .

讨论总结了改进节点设计的途径和改进措施，如：改变节点的构造形式，去除梁 翼缘 焊缝衬 板缺口效应，改进扇形切角构造，加强梁腹板与柱的 连接等。