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对高阻尼橡胶支座的竖向刚度进行了试验研究,分析了支座竖向压应力和剪切应变对支座竖向刚度的影响。结果表明,高阻尼橡胶支座具有稳定的竖向承载能力和变形性能;在纯压状态下,支座的竖向刚度随着竖向压应力的增大近似呈线性增大;在偏压状态下,随着支座剪切应变的增大,在相同竖向压应力作用下支座的竖向刚度近似呈线性减小,并且在不同竖向压应力作用下,支座竖向刚度的减小幅度基本一致。
The vertical stiffness of high-damping rubber bearings was studied and the influence of vertical compressive stress and shear strain on the vertical stiffness of bearings was analyzed. The results show that the high damping rubber bearing has stable vertical bearing capacity and deformation performance. Under pure pressure, the vertical stiffness of bearing increases approximately linearly with the increase of vertical compressive stress. , With the increase of bearing shear strain, the vertical stiffness of abutment decreases linearly with the same vertical compressive stress, and under different vertical compressive stress, the vertical stiffness of bearing decreases Slightly the same.