振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2015年
16期
43-47
,共5页
斜拉桥%桥面相对高度%粘滞阻尼器%减震效果
斜拉橋%橋麵相對高度%粘滯阻尼器%減震效果
사랍교%교면상대고도%점체조니기%감진효과
cable-stayed bridge%relative height of deck%viscous damper%damping effect
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。
由于地震響應特性對斜拉橋結構影響較大,在塔樑之間閤理設置粘滯阻尼器可改善斜拉橋抗震性能。而目前研究多針對具體工程未攷慮斜拉橋麵相對高度對粘滯阻尼器減震效果影響。以某斜拉橋為模型,通過改變其下塔柱高度改變斜拉橋麵相對高度,併繫統分析橋麵相對高度對斜拉橋粘滯阻尼器減震效果影響。研究錶明,橋麵相對高度對粘滯阻尼器最優參數及最優減震效果均有較大影響。
유우지진향응특성대사랍교결구영향교대,재탑량지간합리설치점체조니기가개선사랍교항진성능。이목전연구다침대구체공정미고필사랍교면상대고도대점체조니기감진효과영향。이모사랍교위모형,통과개변기하탑주고도개변사랍교면상대고도,병계통분석교면상대고도대사랍교점체조니기감진효과영향。연구표명,교면상대고도대점체조니기최우삼수급최우감진효과균유교대영향。
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.