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铅芯橡胶隔震支座在平扭耦联地震作用下处于双向受剪及受扭的三向受力状态,与单向受剪或受扭表现出完全不相同的本构关系和耗能情况。作者设计一种平扭耦联装置,对ф100的铅芯橡胶隔震支座进行两种工况的平扭耦联力学性能试验,得到橡胶隔震支座水平Y向的滞回曲线和扭矩与转角的关系。平扭耦联橡胶隔震支座与轴向剪压的试验结果表明,铅芯橡胶隔震支座在平扭力作用下水平刚度、扭转刚度和阻尼比都有所减少,本文所设计的平扭耦联加力装置合理。
The lead-rubber rubber bearings are under bidirectional shear and torsional three-direction force under the action of the coupled torso-torsional vibration, showing completely different constitutive relations and energy consumption compared with uniaxial shear or torsion . The author designs a kind of torsional-torsional coupling device, which tests the torsional-torsional coupling mechanics performance of two kinds of working conditions on the lead-core rubber bearing of ф100. The horizontal Y-direction hysteresis curve and torque of the rubber bearing are obtained Corner of the relationship. The test results of the coupled torsionally-torsional-torsional rubber bearing and the axial shear test show that the horizontal stiffness, the torsional stiffness and the damping ratio of the lead-rubber bearing are reduced under the action of horizontal torsional force. The torsional stiffness Coupling force device is reasonable.