中文摘要：

为了研究上下表面有相对转动的橡胶隔震支座水平力学性能,利用有限元分析软件ABAQUS分析了支座无初始转角和有初始转角时的支座水平性能,进而得出了水平刚度与水平剪应变之间的变化趋势。结果表明：在小剪应变下,支座的水平刚度先随转角的增大而减小,接着随转角的增大而增大,最终趋于相等;与无转角相比,水平刚度随转角增大而增大,使得支座在地震设防烈度下具有较大的安全富余;在工程受力范围内,竖向压力对水平刚度的影响较小。

英文摘要：

In order to analyze the horizontal mechanical properties of the rubber bearings with relative rotation between upper and lower faces, this paper use the finite element software ABAQUS to analyze the horizontal mechanical properties with and without initial rotation angle, the varying trends of horizontal stiffness and shear strain are obtained. The results show that when shear strains are small, the horizontal stiffness of bearings decreases at first with the increases of the rotation, and then increases, and finally tended to equal. Comparing results without rotation the values of the horizontal stiffness increases with the increases of the rotation, so it has a large safety margin under the seismic precautionary intensity. The vertical pressures have little effect on the horizontal stiffness in the engineering stress range.