东南大学学报（自然科学版）2026，Vol.56Issue(5)：676-682,7.DOI:10.3969/j.issn.1001-0505.2026.05.004
NESI控制大跨度桥梁非线性颤振的有效性与鲁棒性
Effectiveness and robustness of a nonlinear energy sink-inerter for nonlinear flutter control of long-span bridges
摘要
Abstract
To enhance the nonlinear flutter performance of long-span bridges,the nonlinear energy sink-inerter(NESI)control method is proposed.Firstly,based on a two-degree-of-freedom bending-torsion coupled non-linear self-excited force model,the equations of motion for the fully coupled wind-bridge-NESI system are es-tablished.Then,a parameter optimization method for NESI is developed using the gradient-based optimiza-tion(GBO)algorithm.Subsequently,taking a section model of a long-span suspension bridge as an example,the sensitivity of NESI parameters to nonlinear flutter control effectiveness is analyzed.Finally,with nonlin-ear flutter control as the objective,the effectiveness and robustness of NESI optimized with consideration of structural and aerodynamic nonlinear effects are investigated.The results demonstrate that numerical predic-tions of structural responses obtained using the explicit fourth-order Runge-Kutta(RK4)method agree well with experimental values.The NESI device,designed through parameter optimization considering structural and aerodynamic nonlinearities,can significantly reduce nonlinear flutter amplitudes of a bridge and the stroke of the NESI mass block.The NESI exhibits excellent robustness against uncertainties in structural frequencies and damping ratios.关键词
大跨度桥梁/非线性颤振控制/GBO算法/非线性能量阱惯容阻尼器(NESI)/NESI参数优化Key words
long-span bridge/nonlinear flutter control/gradient-based optimization(GBO)algorithm/non-linear energy sink-inerter(NESI)/NESI parameter optimization分类
交通工程引用本文复制引用
韩艳,仇志雄,李凯,蔡春声,杨飞..NESI控制大跨度桥梁非线性颤振的有效性与鲁棒性[J].东南大学学报（自然科学版）,2026,56(5):676-682,7.基金项目
国家自然科学基金资助项目(52308480,52178452) （52308480,52178452）
湖南省自然科学基金资助项目(2024JJ6034,2024JJ3002) （2024JJ6034,2024JJ3002）
湖南省研究生科研创新资助项目(CX20251327). （CX20251327）
