摘要
基于Midas-civil软件,以某三塔混凝土自锚式悬索桥为工程背景,采用时程分析方法研究了横向橡胶抗震挡块刚度和纵向粘滞阻尼器参数对三塔混凝土自锚式悬索桥的地震响应的影响,并选出了减震装置的最优参数。结果表明:横向抗震挡块刚度对于三塔混凝土自锚式悬索桥的横桥向振型和地震响应有很大的影响,阻尼系数C和速度指数α对粘滞阻尼器的减震效果也有显著的影响。本例桥横向橡胶挡块的最优刚度范围为600～900 MN/m,最优粘滞阻尼器参数为C=3000～4000 kN/(m/s),α=0.3～0.4。
Based on Midas - civil software, taking a three - tower concrete self - anchored suspension bridgeas the engineering background, the research on the influence of parameters of transverse rubber anti - shock linkstopper rigidity and longitudinal viscous damper on the seismic response of the three - tower concrete self -anchored suspension bridge is made by adopting the time - history analysis method, and the optimal parameter forthe damping device is selected. The results show that the transverse anti - shock link stopper rigidity has a verylarge influence on the vibration mode of transverse direction of bridge and seismic response of the three - towerconcrete self - anchored suspension bridge. And the damping coefficient C and the speed index α also have anobvious influence on the damping effect of the viscous damper. The range of the optimal rigidity for the transverserubber link stopper in this example is 600 ~900 MN/ m, and the optimal parameter of the viscous damper is C =3000 ~4000 Kn/ （m/ s）α,α =0. 3 ~0. 4.
作者
田凯论
潘盛山
TIAN Kai-lun;PAN Sheng-shan(Schoolof Civil Engineering, Dalian University of Technology, Dalian 116024,China)
出处
《北方交通》
2018年第5期1-6,共6页
Northern Communications
基金
国家自然科学基金项目(51678110)
关键词
三塔混凝土自锚式悬索桥
减震控制
时程分析
横向挡块
粘滞阻尼器
Three - tower concrete self - anchored suspension bridge
Seismic control
Time - history analysis
Transverse link stopper
Viscous damper
