摘要
由于地震响应特性对斜拉桥结构影响较大,在塔梁之间合理设置粘滞阻尼器可改善斜拉桥抗震性能。而目前研究多针对具体工程未考虑斜拉桥面相对高度对粘滞阻尼器减震效果影响。以某斜拉桥为模型,通过改变其下塔柱高度改变斜拉桥面相对高度,并系统分析桥面相对高度对斜拉桥粘滞阻尼器减震效果影响。研究表明,桥面相对高度对粘滞阻尼器最优参数及最优减震效果均有较大影响。
Studies show that proper elastic viscous damper between the tower and girder can improve the seismic behavior of cable-stayed bridge. However, conclusions at present are mostly drawn from some specific engineering projects without considering the influence of different relative height of deck on viscous damper＇s shock reduction effect. By changing the height of lower towers to alter the relative height of deck, the influence of relative height of deck on tower- girder viscous damper＇s shock reduction effect was analysed based on a certain cable-stayed bridge model. According to the study, it is shown that the relative height of deck of cable-stayed bridge has an outstanding influence on the damper＇s optimal parameters and the optimum shock reduction effect.
出处
《振动与冲击》
EI
CSCD
北大核心
2015年第16期43-47,共5页
Journal of Vibration and Shock
基金
国家自然科学基金面上项目(51378034/E080505)
北京市自然科学基金面上项目(8122007)
关键词
斜拉桥
桥面相对高度
粘滞阻尼器
减震效果
cable-stayed bridge
relative height of deck
viscous damper
damping effect
