梁柱节点区柱腹板的宽厚比验算及加劲肋设置

Placement of Ribbed Stiffener and Testing of Width-thickness Ratio for Column's Web in Beam-column Joint Zone

当柱与梁连接时,节点处柱受到压力和拉力作用,腹板受压区可能在翼缘未屈服前屈曲。根据国内外规范对梁柱节点处柱腹板宽厚比的不同要求,通过对节点处柱腹板的受力分析,参考圣维南原理,利用稳定理论计算柱腹板的屈曲宽厚比,增加柱腹板宽厚比的许可范围。利用受压两边简支板的临界应力计算加劲肋的宽厚比,通过板的屈曲理论对柱腹板和加劲肋厚度建立对比关系,为进一步确定加劲肋厚度提供参考。

In the beam-column joint zome,the column is bearing compression and tensile force.So the web may yield before the flange.Based on the nationd and foreign codes,the width-thickness ration is calculated using stability theory to increase the scope of column web's width-thickness ration.The critical stress analysis of simply supported slab is used to calculate the width- thickness ration of the ribbed stiffener.The comparison relation of column web's and ribbed stiffener's thickness is set up through the slab's yielding theory.It is can be refemed for more research.