斜拉索非线性阻尼器阻尼机制与参数优化

国家自然科学基金青年项目

项目简介

斜拉索是斜拉桥的关键受力构件，其自身阻尼很小因而易在环境激励下发生振动，危及斜拉桥的安全。在索近锚固点安装减振器是最有效的减振方法。为了研究实际索减振器的非线性行为并利用其在拉索减振中的优势，本项目拟研究斜拉索-非线性减振系统的动力特性及参数优化方法，将关注该系统的重要动力特性–稳态响应。首先，拟引入近来在机械等领域快速发展、能高效求解强非线性系统的谐波平衡法，研究该方法在分析索减振系统这一多自由度结构中的适用性；进而，研究基于系统稳态动力特性评价其减振性能的合理方法；最终，建立基于谐波平衡法的拉索-非线性减振系统的动力分析及参数优化框架。拟利用该方法，具体分析非线性粘滞阻尼器、摩擦阻尼器及限位装置安装于索近锚固点时对索前几阶振动的最优控制效果及相应装置参数，探讨非线性减振机理。本课题的成果将直接应用于拉索减振装置的优化设计，为索减振方案的开发提供理论基础，具有明确的工程和理论价值。

研究成果

期刊论文

  1. Chen L., Nagarajaiah, S., & Sun, L.* (2021). A unified analysis of negative stiffness dampers and inerter-based absorbers for multimode cable vibration control. Journal of Sound and Vibration, 494, 115814. (第一标注, JCR 一区)

  2. Chen, L., Sun, L.* , Xu, Y., Di, F., Xu, Y., & Wang, L. (2020). A comparative study of multi-mode cable vibration control using viscous and viscoelastic dampers through field tests on the Sutong Bridge. Engineering Structures, 224, 111226. (第一标注, JCR 一区)

  3. Chen, L., Di, F., Xu, Y., Sun, L.* , Xu, Y., & Wang, L. (2020). Multimode cable vibration control using a viscous-shear damper: Case studies on the Sutong Bridge. Structural Control and Health Monitoring, 27(6), e2536. (第一标注, JCR 一区)

  4. Sun, L., Hong, D., & Chen, L.* (2019). In-plane free vibrations of shallow cables with cross-ties. Structural Control and Health Monitoring, 26(10), e2421. (第一标 注, JCR 一区)

  5. Sun, L., Xu, Y., & Chen, L.* (2019). Damping effects of nonlinear dampers on a shallow cable. Engineering Structures, 196, 109305. (第一标注, JCR 一区)

  6. Sun, L., & Chen, L.* (2017). Residual mode correction in calibrating nonlinear damper for vibration control of flexible structures. Journal of Sound and Vibration, 406, 197-207. (第一标注, JCR 一区)

  7. Sun, L., Hong, D.* , & Chen, L. (2017). Cables interconnected with tuned inerter damper for vibration mitigation. Engineering Structures, 151, 57-67. (第一标注, JCR 一区)

  8. Di, F., Sun, L., Qin, L., Chen, L.* , Zou, Y., Jiang, L., & Zhu, Y. (2020). Full-scale experimental study on vibration control of bridge suspenders using Stockbridge dampers. Journal of Bridge Engineering, 25(8), 04020047. (第一标注, JCR 二区)

  9. Di, F., Chen, L., & Sun, L.* (2021). Optimal design of dampers for multi-mode cable vibration control based on genetic algorithm. International Journal of Structural Stability and Dynamics, 2150058. (第一标注, JCR 二区)

  10. Chen, L., Xu, Y., & Sun, L.* (2021). A component mode synthesis method for reduced-order modeling of cable networks in cable-stayed bridges. Journal of Sound and Vibration, 491, 115769. (第二标注, JCR 一区)

  11. Di, F., Sun, L., & Chen, L.* (2020). Cable vibration control with internal and external dampers: Theoretical analysis and field test validation. Smart Structures and Systems, 26(5), 575-589. (第二标注, JCR 一区)

会议论文及报告

  1. Chen, L., & Sun, L. (2017). Calibration of nonlinear damper for shallow cable based on forced vibration analysis. In: Proc. The 15th East Asia-Pacific Conference on Structural Engineering & Construction (EASEC-15), 2017/10/11-2017/10/13, Xi’an, China, pp. 1852-1859. (第一标注)

  2. Sun, L., & Chen, L.* (2017). Optimizing nonlinear damper performance for multimode cable vibration control based on forced vibration responses. In: IABSE Symposium Report, The 39th IABSE Symposium - Engineering the Future, 2017/9/21-2017/9/23, Vancouver, Canada, pp. 3004-3009. (第一标注)

  3. Hong, D., Sun, L., & Chen, L. (2018). Vibrations of two shallow cables with a cross-tie. In: Proc. the 7th World Conference on Structural Control and Monitoring, 2018/7/22-2018/7/25, Qingdao, China, pp. 1148-1158. (第一标注)

  4. Sun, L., & Chen, L. (2018). An improved numerical model for a shallow cable attached with dampers. In: Proc. the 7th World Conference on Structural Control and Monitoring, Qingdao, China, 2018/7/22-2018/7/25, pp. 2949-2957. (第一标注)

软件著作权

  1. 陈林; 孙利民; 许煜远; 索减振分析设计师软件, 2018-10-12, 中国, 2019SR0790054.

  2. 陈林; 孙利民; 索力识别助手软件, 2018-12-28, 中国, 2019SR0784987.