噪声与振动控制2025，Vol.45Issue(4)：21-25,5.DOI:10.3969/j.issn.1006-1355.2025.04.004
移动荷载下悬浮隧道管体-张力腿非线性时滞减振研究
Nonlinear Time-delay Vibration Control of the Submerged Floating Tunnel Tube-tensile Leg Coupling System under Moving Load
摘要
Abstract
The submerged floating tunnel(SFT)is a new cross-sea structure designed for future traffic.However,the suspended tunnel is affected by mobile vehicles,ocean currents and some other effects.The pipe body and tensile leg struc-ture of the SFT will generate large vibrations,which can easily cause fatigue damage.Therefore,the vibration control prob-lem of SFT needs to be solved urgently.In this study,based on the Euler-Bernoulli beam theory and time-delay vibration re-duction strategy,considering the effects of fluid damping force and ocean current on the vortex-induced lift force of the SFT,the model for analyzing coupling nonlinear vibration of the tunnel pipe body and tensile leg under the action of moving load was established.The vibration differential equation of the SFT coupled system under the action of moving loads was ob-tained through the Galerkin method,and solved numerically by using Runge-Kutta method.The influence of time-delay,con-trol gain,load mass and velocity of the moving load on the vibration suppression effect of the SFT coupled system was stud-ied.The results show that under the action of moving loads,selecting appropriate time-delay,control gain and control posi-tion can significantly reduce the vibration response of the SFT coupling system;the mass and velocity of the moving load have a greater impact on the time-delay vibration reduction effect.So,in actual engineering,the load mass and velocity should be limited.关键词
振动与波/移动荷载/水下悬浮隧道/非线性/时滞减振Key words
vibration and wave/moving load/submerged floating tunnel/nonlinear/time-delay vibration reduction分类
数理科学引用本文复制引用
程晓文,彭剑,孙洪鑫,颜世军..移动荷载下悬浮隧道管体-张力腿非线性时滞减振研究[J].噪声与振动控制,2025,45(4):21-25,5.基金项目
国家自然科学基金资助项目(W2411050,12432001) （W2411050,12432001）
湖南省自然科学基金资助项目(2023JJ60527) （2023JJ60527）
湖南省教育厅资助项目(23B0493) （23B0493）
