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针对铅芯橡胶隔震支座进行了各项基本力学性能和极限性能试验研究。采用三个不同厂家按同种规格生产的LRB支座,通过竖向轴压和水平剪切试验检验支座的各项基本力学性能、压力和剪切变形相关性,试验结果表明,支座的基本性能良好,相关性能稳定。进一步对支座进行了水平极限剪切变形试验,并对比了极限变形前后支座的基本力学性能。试验中A、B和C三个支座均达到水平剪切变形400%未出现破坏,其中C支座最大水平变形达到支座的±500%未出现破坏。各支座在极限变形后的力学性能保持稳定,未出现异常。
The basic mechanical properties and ultimate performance tests of lead rubber bearing were carried out. Using three different manufacturers according to the same specifications of LRB bearings produced by vertical axial pressure and horizontal shear test of the basic mechanical properties of bearings, pressure and shear deformation correlation test results show that the support The basic performance is good, the related performance is stable. The bearing was further subjected to the horizontal ultimate shear deformation test, and the basic mechanical properties of the bearing before and after the limit deformation were compared. Tests A, B and C three bearings reached horizontal shear deformation of 400% did not appear to damage, where the maximum level C bearing deformation to ± 500% of the bearing does not appear damaged. The mechanical properties of the bearings in the deformation after the limit remained stable, without exception.