@article{oai:muroran-it.repo.nii.ac.jp:00005917,
 author = {新山, 惇 and NIIYAMA, Makoto and 佐藤, 昌志 and SATO, Masashi and 小室,  雅人 and KOMURO, Masato and KISHI,  Norimitsu and 岸, 徳光},
 journal = {構造工学論文集. A},
 month = {Mar},
 note = {application/pdf, 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.},
 pages = {1093--1102},
 title = {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},
 volume = {47},
 year = {2001},
 yomi = {ニイヤマ, マコト and サトウ, マサシ and コムロ, マサト and キシ, ノリミツ}
}