橡胶隔震支座竖向性能试验研究

Test study on vertical property of rubber isolators

为了全面评价隔震橡胶支座的竖向性能,特别是在压缩剪切变形状态下的竖向性能,对铅芯橡胶支座和天然橡胶支座的竖向性能进行了试验研究,分析了这两种隔震支座在压缩剪切变形状态下偏压竖向刚度以及竖向变形量等特性。结果是随着剪切变形的增加,隔震橡胶支座的竖向刚度逐渐减小;由剪切变形和竖向压力产生的竖向沉降量的比例是不断变化的。因此,在全面评价橡胶隔震支座特性时,单纯压缩竖向刚度不足以全面反应橡胶隔震支座的竖向压缩性能,

In order to reveal the evaluate property of rubber isolators, especially the vertical property at shear-compression deformation, vertical property tests of rubber isolators at shear-compression are performed with different parameters. The biasing pressure vertical stiffness and vertical deformation properties at shear-compression state are studied. The vertical stiffness decreases with shear deformation increase and the ratio of quantity of vertical deformation producing shear deformation and vertical stress is variable. So the pure vertical compressive stiffness is not enough estimated with vertical compressive property of robber isolator.