厦漳跨海大桥南汊主桥方案液体粘滞阻尼器研究

Research on Fluid Viscous Damper for Southern Branch Main Span Scheme of Xiazhang Sea-Crossing Bridge

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。

The performance of fluid viscous damper is studied for southern branch main span scheme of Xiazhang Sea-Crossing Bridge. Damping coefficient and damping exponent are chosen as two main parameters, whose sensitivity is discussed through non-linear dynamic time-history method. The locations of dampers are investigated afterwards. The analysis indicates that both relative displacement of key points and seismic response of key components could be obviously reduced with reasonably choosing the parameters and locations of dampers.