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Free Vibration Analysis of Long-Span Suspension Bridge Scheme and Effects of Structure Parameter

SU Guang_ya,GAO Ri,GUO Wei_wei,XIA He(School of Civil Engineering and Architecture, Northern Jiaotong University, Beijing 100044,China)  
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.
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