以厦漳跨海大桥南汊主桥方案为工程背景,研究了液体粘滞阻尼器对该桥抗震性能的影响。利用非线性动力时程分析方法,对阻尼系数和阻尼指数进行了参数分析,并对阻尼器的布置位置进行了探讨。研究发现,通过选择合适的阻尼器参数和布置位置,可明显减小结构关键部位的相对位移,同时可有效降低关键构件的地震力。 Taking the project of Nanzhang main bridge of Xiamen-Zhangzhou Sea-Crossing Bridge as engineering background, the influence of liquid viscous damper on the seismic performance of the bridge is studied. Using nonlinear dynamic time history analysis method, the damping coefficient and damping index are analyzed, and the position of the damper is discussed. The study found that by choosing the appropriate damper parameters and location, the relative displacement of the key parts of the structure can be obviously reduced, and the seismic force of the key components can be effectively reduced.