Study on Mechanical Property of Bridge Bearings under Eccentric Compression and Shearing

Abstract

—In order to obtain the mechanical properties of plate type elastomeric pad bearing in bridge engineering under non-ideal working conditions, eccentric compression-shear test is carried out, taking into account different rotation angle and shearing deformation of the bearing. Numerical analysis is carried out by ABAQUS software, to simulate the disengaging of bearing accurately. Disengaging factor is put forward based on the disengaging area of the bearing. The influence of loading direction to slipping property of bearing is also studied, and equivalent friction coefficient is put forward. Results show that the rotation angle of bearing under different shear deformation has a large influence on its mechanical properties, especially on the bearing stiffness, disengaging factor and equivalent friction coefficient.