高层建筑结构中柱的混凝土强度等级往往高于梁板的混凝土强度。采用夹芯节点施工较为方便,然而当梁柱混凝土等级级差过大时,节点承载力将不能满足设计要求。针对这一问题,通过数值模拟分析对框架角节点区进行了应力分布和抗剪承载力特征分析。研究表明:采用箍筋加强和梁端竖向加腋的加强措施,既满足了强度要求,又减小了施工难度。 The concrete strength of columns in high-rise building structures tends to be higher than the concrete strength of the slab. It is more convenient to use sandwich node construction. However, when the beam-column concrete grade difference is too large, the node bearing capacity will not meet the design requirements. In response to this problem, the stress distribution and the shear bearing capacity characteristics of the corner joints were analyzed by numerical simulation. The research shows that the reinforcement measures by the stirrups and the vertical increase of the axles at the beam ends not only meet the strength requirements but also reduce the construction difficulty.