Research on horizontal mechanical properties of self-reset rigid slide plate isolation bearings
The basic structure and isolation principle of the self-reset rigid slide plate isolation bearing were introduced,the self-reset rigid slide plate isolation bearing was theoretically analyzed based on the mechanical balance principle,the equivalent stiffness of the bearing was deduced,and the hysteretic model of the bearing was constructed,the recovery characteristic of the bearing was discussed.The hysteretic characteristics and recovery ability of the bearing under cyclic load were tested by using an electro-hydraulic servo compression-shear testing machine.The hysteretic characteristics and recovery of the bearing under horizontal displacement excitation were simulated by ABAQUS software.The results show that the numerical simulation results are in good agreement with the experimental results,and the hysteretic performance of the self-reset rigid slide plate isolation bearing is good,and the greater the pressure is,the fuller the hysteretic curve is.The maximum stress in the cyclic loading process of the bearing is located in the center of the rigid slider and in the elastic range.The self-reset ability of the bearing is inversely correlated with the friction coefficient of the sliding surface and positively correlated with the shear modulus of the recovery rubber.
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