叠层橡胶隔震支座动力特性试验研究

通过对16个叠层橡胶隔震支座的动力试验，研究了这类隔震支座的基本性能，包括：大震时设计压力下的水平刚度和阻尼特性；水平剪切变形、水平荷载频率、水平荷载循环次数、竖向荷载变化对隔震支座水平刚度和阻尼特性的影响；纯压承载力；极限水平位移；大震时的极限竖向荷载．

Experimental Investigation on Dynamic Performance of Laminated Rubber Mounts

Dynamic performance tests have been carried out on sixteen laminated rubber mounts. The horizontal stiffness and damping characteristics under serious earthquake4 the influences of the horizontal shearing deformations, the vertical loads, and the frequencies and cycle index of horizontal loading on the dynamic performance of the rubber mount; the load-carring capacity under pure compression, the limiting horizontal displacement as well as the maximum vertical load under serious earthquake are obtained. It can be seen from test results that the stiffness and the damping of the laminated rubber mount are obviously reduced with the increase of shearing deformation, and attention should be paid to the situation if the mount is to be designed to stand against either a strong or a weak earthquake. However, for a strong earthquake, the influence of frequencies and cycle index of the loading on the performance of the mounts can be neglected.