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目的分析不同参数对贯穿式方钢管混凝土-H型钢梁节点的抗震性能的影响.方法采用ABABQUS软件对不同参数的该类节点分别进行单调加载及往复加载,并与试验结果进行对比,研究轴压比、钢管壁厚度、隔板厚度及外伸长度等参数对该类节点受力性能的影响规律.结果塑性铰一般出现在梁端且与隔板的外伸尺寸密切相关,“滞回环”很饱满.通过对比分析,笔者建议节点轴压比应小于0.4,隔板的外伸长度取值范围60~100 mm,隔板厚度取8~10 mm.结论节点的抗震性能的增强是随着隔板外伸长度的增加而增加的,虽然隔板厚度对组合节点的抗震性有一定程度的影响,但作用效果不明显.轴压比越大,位移延性和承载力下降越快.另一方面随着钢管壁厚度的增加节点的耗能也在不断增加.
Aim To analyze the influence of different parameters on the seismic performance of steel-reinforced concrete-H type steel beam joints with pierced sections.METHODS ABABQUS software was used to monotonously load and reciprocally load different kinds of nodes with different parameters respectively and compare with the experimental results Pressure ratio, the thickness of the steel pipe wall, the thickness of the diaphragm and the extensional length on the mechanical behavior of such joints were analyzed.Results The plastic hinge generally appeared at the end of the beam and was closely related to the external dimension of the diaphragm, and the “hysteresis loop ”Comparative analysis shows that the author suggests that the axial compression ratio of joints should be less than 0.4, the extensional length of diaphragms should be in the range of 60 ~ 100 mm, and the thickness of diaphragms should be 8 ~ 10 mm.Conclusion The seismic performance of joints is enhanced With the increase of the extension of the separator, although the thickness of the separator has a certain degree of impact on the seismic resistance of the composite joints, the effect is not obvious. The greater the axial compression ratio, the faster the displacement ductility and the bearing capacity decrease. On the other hand, as the thickness of the steel pipe increases, the energy consumption of the node is also increasing.