2024-03-29T05:51:37Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00006757
2022-12-13T02:20:04Z
7:15:51
Study on durability evaluation of concrete structure constructed over 60 years ago in cold region
SAKURAI, Hiroshi
34112
OKADA, Kaneyoshi
34113
AYUTA, Koichi
34114
SAEKI, Noboru
34115
MINAMIYA, Takahiro
34116
SAKURAI, Hiroshi
34117
OKADA, Kaneyoshi
34118
AYUTA, Koichi
34119
SAEKI, Noboru
34120
MINAMIYA, Takahiro
34121
application/pdf
Concrete structures constructed in cold region suffer from many cycles of freeze-thaw in Winter. Especially concrete structures which were constructed before 1930s and which did not contain air entrained (AE) agent suffer remarkably from frost damage due to freeze-thawing. Some of them, however, are of good designs and harmonize well with the surrounding environment. So some campaigns to preserve the structures are in progress, for example, in Kamishihoro, Shyari and so on in Hokkaido. Furthermore, the maintenance and management for long term service of these structure is important for efficient public investment. The purpose of this study is basically to :1) Investigate the change in time of concrete arch bridge constructed in cold region 60 years ago by researching at the site and to look up design plan report of that time.2) Analyzing the freeze-thaw cycles of section on member toward direction of depth as an external factor.3) Evaluate the safeness and performance of the structure influenced by change in time by analyzing with finite element method (FEM) and look up design plan report of that time in order to predict remaining serviceable years.
departmental bulletin paper
北見工業大学
1998-09
application/pdf
北見工業大学研究報告
1
30
27
36
https://kitami-it.repo.nii.ac.jp/record/6757/files/30-1-4.pdf
eng