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提出在独塔斜拉桥主梁与桥塔连接处采用铅芯橡胶支座与粘滞阻尼器作为其减震、耗能措施,并利用非线性弹簧单元与Maxwell阻尼模型来模拟铅芯支座与粘滞阻尼器的滞回耗能特性,通过结构非线性地震反应的分析方法,探讨了铅芯支座与粘滞阻尼器对独塔斜拉桥的减震、耗能效果。结果表明:在独塔斜拉桥主梁与连接处采用铅芯支座与粘滞阻尼器是一种非常有效的减震措施。
It is proposed that lead rubber bearing and viscous damper should be adopted as the damping and energy dissipation measures at the connection of main girder and bridge tower of single tower cable-stayed bridge. The nonlinear spring unit and Maxwell damping model are used to simulate the lead support And the hysteretic energy dissipation characteristics of viscous dampers, the damping and energy dissipation effects of the lead core support and the viscous damper on the single pylon cable-stayed bridge are discussed through the analysis of nonlinear seismic response of structures. The results show that the lead support and viscous damper are the most effective damping measures for the main pylon of the single tower cable - stayed bridge.