论文部分内容阅读
基于单层单跨变截面轻型门式刚架整体拟静力试验研究,对影响整体结构抗震性能的因素,如翼缘宽厚比、腹板高厚比以及楔率进行有限元分析,得到了上述因素对整体结构承载力、耗能能力、初始刚度和刚度退化等的影响规律,并给出合理取值区间,为结构设计提供一定参考。同时,在有限元分析结果的基础上,给出考虑翼缘宽厚比、腹板高厚比以及楔率影响的三线型骨架曲线关键参数拟合公式,为相关恢复力模型分析奠定基础。
Based on the whole quasi-static test of lightweight single-span portal frame with single span and single span, the finite element analysis of factors influencing the seismic performance of the whole structure, such as flange width to thickness ratio, web thickness ratio and wedge ratio, The influence of factors on the bearing capacity, energy dissipation capacity, initial stiffness and stiffness degradation of the whole structure, and gives a reasonable range of values for the structural design to provide some reference. At the same time, based on the finite element analysis results, the fitting formulas of the key parameters of the three-line skeleton curve considering the effect of the flange width-to-thickness ratio, the web thickness-thickness ratio and the wedge ratio are given, which lays the foundation for the analysis of the relevant restoring force model.