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本文给出了斜拉桥钢绞线斜拉索粘性剪切型阻尼器的设计和安装方法。在描述了斜拉索常见的风致振动及其危害后,介绍了目前所采用的斜拉索减振措施。根据国内粘性剪切型阻尼器研究现状,针对钢绞线斜拉索,采用AN SY S有限元程序进行设计计算;分析了影响粘性剪切型阻尼器减振效果的因素。通过在安庆长江大桥上进行实桥试验,验证了本粘性剪切型阻尼器设计计算方法的可行性和减振效果。
In this paper, the design and installation method of cable-stayed viscous shear dampers for cable stayed bridges are presented. After describing the common wind-induced vibration and its hazards of the stay cables, the present measures of damping of the stay cables are introduced. According to the research status of viscous shear damper in China, the finite element program of AN SYS was used to design and calculate the diagonal cable of the strand, and the factors that affect the damping effect of the viscous shear damper were analyzed. Through the actual bridge test on Anqing Yangtze River Bridge, the feasibility and damping effect of this viscous shear damper design and calculation method are verified.