空间缆索自锚式悬索桥模态贡献系数分析

Analysis of Modal Contribution Coefficients of Spatial Cable Self-Anchored Suspension Bridge

根据结构动力学及模态分析理论,推导结构模态贡献系数计算公式,编制相应的计算机程序;针对空间缆索自锚式悬索桥结构特点,计算分析该复杂桥梁结构的模态贡献系数。研究结果可指导复杂桥梁结构动力特性测试方案的制定,并有效匹配复杂结构试验分析与理论计算模态。

This paper sets up the calculation formula for the structural modal contribution coefficients and makes the related computer program in accordance with the structural dynamics and modal analysis theory. In the light of the structural characteristics of the spatial cable self-anchored suspension bridge, the paper calculates and analyzes the modal contribution coefficients of the complicated bridge structure. The results of study in the paper can be used for guiding the formulation of testing schemes for dynamic characteristics of the similar complicated bridge strucures and also for effectively matching the test analysis and theoretic calculation modals of the structures.