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以贵州六冲河大跨度斜拉桥为研究对象,对地震区大跨度漂浮体系斜拉桥进行抗震研究,验证了塔梁间设置经过优化设计的阻尼器的减震耗能的有效性和合理性。通过合理选择阻尼参数,对漂浮体系斜拉桥塔梁之间设置阻尼器,并与无阻尼器漂浮体系在相同地震作用下的内力效应和位移效应进行对比。结果表明:塔梁间设置阻尼器降低了漂浮大跨度斜拉桥地震作用下关键截面的位移响应和内力响应,具有较高的使用价值。
Taking the large-span cable-stayed bridge of Liuchuang River in Guizhou Province as the research object, the seismic study on the long-span floating cable-stayed bridge in the earthquake area is carried out to verify the effectiveness and reasonableness of damping energy dissipation for dampers with optimized design Sex. By reasonably selecting the damping parameters, a damper is set up between the tower girders of the floating system cable-stayed bridge and compared with the internal force effect and displacement effect under the same earthquake without the damper system. The results show that the installation of dampers between the tower and beam reduces the displacement and internal force response of the key section under the earthquake action of the long-span cable-stayed bridge and has high value.