悬索桥断索动力响应有限元模型参数研究

邱文亮,杨浩荣,吴广润

Parameter study on finite element model of abrupt hanger-breakage event induced dynamic responses of suspension bridge

Wen-liang QIU,Hao-rong YANG,Guang-run WU

表 2 修正模型的结构模态阻尼比与主缆局部振动阻尼比

Tab.2 Modal damping ratio of structure and local vibration damping ratio of main cable in modified finite element model

ξ ξB ξT ξloc 工况1） 工况2） % 0.5 0.52 0.53 5.31 2.5 1.5 1.51 1.51 6.27 2.5 2.5 2.51 2.55 7.17 2.5 0.5 0.54 0.53 6.73 5.0 1.5 1.55 1.57 8.04 5.0 2.5 2.57 2.59 9.03 5.0