摘要
针对大跨斜拉结构拉索的一种非线性振动—参数振动,考虑塔柱、拉索及空间结构的协同作用,建立精细化振动模型,基于数值分析,以有限元仿真为手段验证耦合模型的理论公式的正确性,除考虑弱非线性振动情况,对强非线性振动也加以研究。研究结果不仅可以指导大跨斜拉结构的设计施工,还能为拉索参数振动的抑制和控制提供建设性意见。
As an important issue in the design of long span cablestayed structures, the vibration behavior and non linear factor of cables affects the mechanical characteristics of the overall structure. A precise model with the con sideration of interactions between pylons, cables and the spatial structure to investigate the parametric vibration of the cables is presented. Based numerical analysis, the validity of theoretical formula about the coupling model is demonstrated by finite element simulation. Besides the case of weakly nonlinear vibration, more attention to the strongly nonlinear vibration is paid. The correlative results can provide basic guidelines for the design of cable stayed structures and beneficial suggestions to suppress and control the occurrence of the parametric vibration.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2012年第5期566-572,共7页
Journal of Natural Science of Heilongjiang University
基金
中央高校基本科研业务费专项资金资助项目(DL11BB11)
黑龙江省教育厅科学技术研究项目(12513033)
东北林业大学大学生创新训练项目(201210225045)
关键词
斜拉索
非线性
参数振动
有限元
数值分析
cable
nonlinear
parametric vibration
finite element
numerical analysis
