供用後27年経過した三径間連続鋼床版斜張橋の自由振動特性
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概要
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A three-span continuous steel-deck cable-stayed bridge was constructed by Hokkaido Development Bureau to let route 231 of national highway cross Ishikari River. This bridge has been commonly used for twenty-seven years after construction. Since this route is very important for people living in the region along the Sea of Japan in Hokkaido, maintenance has been continued and total 200,000 kg steel members have been installed to retrofit and strengthen. Here, in order to investigate the influence of installed steel members on natural vibration characteristics, forced vibration test is conducted by means of weight motion method. From this experiment, it is seen that each fundamental vibration frequency is almost 4% small due to mass increasing, and then earthquake and wind-resistant performances have not been changed.
- 土木学会の論文
- 2001-03-00
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関連論文
- 桁拘束を有するRC橋脚のFRPシートによる曲げ補強効果に関する実験
- 供用後27年経過した三径間連続鋼床版斜張橋の自由振動特性
- 3265 桁拘束を有するRC橋脚のFRPシートによる曲げ補強効果に関する実験(耐震補強)