钢筋混凝土巨型框架节点区受力分析及抗剪计算

研究了钢筋混凝土巨型框架梁柱节点核芯区的受力性能以及节点区各部分的剪力值和受剪承载力的计算方法。用钢筋混凝土薄膜元理论 ,建立了节点区受力分析的理论方法 ;用建立的方法计算了 4个巨型框架梁柱节点试验模型节点区的承载力和其中一个节点区破坏的模型的破坏过程 ,用极限分析法计算了 4个试验模型梁端的受弯承载力 ,计算结果与试验结果吻合较好。在此基础上 ,提出了节点区抗剪计算的建议 ,可作为工程设计参考

Analysis and shear calculation of RC mega-frame beam-column core regions

The behavior of reinforced concrete (RC) mega frame beam column core regions was studied by calculating the shear force and the shear capacity of each portion of the core regions. The theory of reinforced concrete membrane elements was used to develop a theoretical method for analyzing the behavior of beam column core regions. This method was used to calculate the load carrying capacity of the core region of four RC mega frame beam column joint specimens and to analyze the failure process of one of the four specimens, which sustained damage in its core region. The ultimate analysis method was used to calculate the beam bending capacity of the specimens. The analytical results agreed well with the test results. The experimental and theoretical results were used to develop a new method for calculating the shear force and shear capacity of RC mega frame beam column core regions, which can be used to design RC mega frames.