摘要
大跨度桥梁的自振特性分析是桥梁抗震、抗风设计以及进行车桥动力相互作用分析的基础,结构的自振频率是大跨度桥梁动力特性的关键参数.本文以武汉天兴洲长江大桥大跨度悬索桥方案为工程背景,对其进行自振特性的计算,并就几项结构参数对自振特性的影响进行了分析,得出了一些合理的、有意义的结果.
The free vibration analysis of long span bridges is the base of the earthquake and wind resistance design of bridge structures. It's also the base of the dynamic interaction response analysis of bridges and trains. The frequencies of bridge structures are the key parameters reflecting the free vibration features. In this paper, wuhan tianxingzhou long_span suspension bridge scheme is selected as engineering background, and the free vibration analysis is processed. Some useful conclusions are obtained by analyzing the results of the changing of the structure parameters.
出处
《北方交通大学学报》
CSCD
北大核心
2003年第1期72-75,共4页
Journal of Northern Jiaotong University
关键词
悬索桥
自振特性分析
自振频率
结构参数
suspension bridge
free vibration analysis
self_frequency
structure parameters
