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本文根据调质阻尼器(TMD)的基本原理及R.H.Scanlan教授提出的大跨悬吊桥梁风致抖振的分析理论,导出了TMD用于控制桥梁弯扭抖振的理论公式,在此基础上,讨论了一些工程约束条件,给出了按照这一方法设计TMD的步骤。最后,以国内新建成的一座大跨斜拉桥为例,分析了TMD的参数对抖振控制效果的影响。
Based on the theory of quenched damper (TMD) and the theory of wind induced chattering proposed by Prof. RHScanlan, the theoretical formula of TMD for controlling bending and torsional vibration of bridge is deduced. Based on this, Some engineering constraints are discussed, and the steps of designing TMD according to this method are given. Finally, taking a newly built span cable-stayed bridge in China as an example, the influence of TMD parameters on the chattering control effect is analyzed.