长沙理工大学学报（自然科学版）2016，Vol.13Issue(1)：28-33,6.
大跨度悬索桥动力特性的参数分析
Parameter analysis of long span suspension bridge dynamic characteristics
摘要
Abstract
Based on single span suspension bridge,this paper uses large-scale finite element software MIDAS Civil 2013 to establish the bridge space model,the subspace iteration method is adopted to study the dead load degree,the central buckle and the change of the stiffness parameters such as impact on the dynamic characteristics of the suspension bridge into the bridge state,the results suggest that increased degree of dead load set can reduce the vibration frequency of main cable but the impact on the rest of the modal frequency is more complex.The central buckle can enhance the whole stiffness of the whole bridge;the girder stiffness change influence laterally and rertically.The change of the main tower and boom stiffness is not obvious influence on structure of the natural frequency of vibration.关键词
单跨悬索桥/动力特性/结构参数/振型/频率/有限元法Key words
single-span suspension bridge/dynamic characteristics/structural parameters/mode of vibration/frequency/the finite element method分类
交通工程引用本文复制引用
肖勇刚,陈伟华..大跨度悬索桥动力特性的参数分析[J].长沙理工大学学报（自然科学版）,2016,13(1):28-33,6.基金项目
国家自然科学基金资助项目(51108047) （51108047）
