论文部分内容阅读
在现有RC梁柱节点抗剪模型的基础上,提出了高强箍筋RC梁柱节点抗剪模型。该模型考虑了节点中混凝土的斜压杆传力机制和箍筋的抗剪作用。计算结果表明:通过建议的节点抗剪模型计算的高强箍筋RC梁柱节点的剪切应力-应变曲线与试验结果符合较好,节点最大剪应力计算值与试验值之比的平均值接近于1且变异系数较小。将该节点抗剪模型应用于OpenSees程序中分析了高强箍筋RC梁柱节点在往复荷载作用下的力学行为,讨论了混凝土强度和轴压比对高强箍筋RC梁柱节点受力性能的影响。该模型可用于高强箍筋RC梁柱节点的受力分析。
Based on the existing RC beam-column joint shear models, a shear-resistant RC beam-column joint model is proposed. The model considers the baroclinic force transfer mechanism of concrete and the shear effect of stirrups. The calculation results show that the shear stress-strain curve of the RC beam-column joints calculated by the proposed joint shear model is in good agreement with the experimental results, and the average of the ratio of the maximum shear stress to the experimental value is close to 1 and the coefficient of variation is smaller. The shear model of the joint was applied in the OpenSees program to analyze the mechanical behavior of the beam-column joints with high-strength stirrups under cyclic loading. The effects of concrete strength and axial compression ratio on the behavior of RC beam-column joints were discussed . The model can be used to analyze the stress of RC beam-column joints.