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基于ANSYS有限元软件,对于采用H形截面的软钢隔震耗能支座的滞回性能进行了支座腹板的宽厚比、轴压比和高宽比等多参数分析。其中尤以宽厚比对支座的耗能能力的影响最为显著,支座的极限剪应力和延性随着宽厚比的减小而增大,故较小的宽厚比可以有效地延缓支座腹板的屈曲变形,有利于支座隔震耗能性能的充分发挥。研究结果表明软钢隔震耗能支座的耗能能力优越,给出了工程中软钢隔震耗能支座的等效阻尼比的理论建议值,可供设计参考。
Based on the finite element software ANSYS, the hysteretic behavior of the soft steel isolated shock absorber with H-shaped section was analyzed by multi-parameters such as aspect ratio, axial compression ratio and aspect ratio. Among them, the ratio of width to thickness has the most significant impact on the energy dissipation capacity of the support. The ultimate shear stress and ductility of the support increase with the decrease of the ratio of thickness to thickness. Therefore, the smaller ratio of width to thickness can effectively delay the support web Of the buckling deformation, is conducive to bearing the full performance of energy-saving performance. The research results show that the energy dissipation capability of soft steel isolated shock absorber is superior and the theoretical value of the equivalent damping ratio of soft steel isolated shock absorber is given for design reference.