一种叠层橡胶支座动态性能试验研究

通过对一种叠层橡胶支座进行伪静力试验，研究加载频率、剪切变形率、热老化对叠层橡胶支座的等效水平刚度、等效阻尼比等支座动态性能的影响。试验结果表明，加载频率、加载振幅对支座刚度和阻尼均有较明显的影响，在支座刚度计算中应当考虑这一因素。老化试验表明该叠层橡胶支座在建筑结构使用期内具有足够的耐久性，最后提出了该叠层橡胶支座的赐度计算建议公式。

Test Study on Dynamic Behavior of Laminated Rubber Bearings

In this paper, a pseudo-static test on dynamiic behavior of laminated rubber bearings(LRB) has been done.Some paramters such as load's frequency, shear deformation ratio have been considered as the variable quantity in the test. Another thermal aging test about the available life of LRB is also done to verify that the LRB can remain its capacity in whole life of the structure. Test results show that the equivalent horizontal stiffoess will increase and the damping ratio will decrease when had's frequency increased. When shear deformation ratio increases, the horizontal stiffness will decrease and damping ratio will increase. A calculated stiffness medel and suggested daming ratio are given in the end.