Weldability and post-welding fatigue strength of older railway bridges
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Bibliographic Details
| Author(s): |
Takahiro Hirano
(East Japan Railway Company, Tokyo, JAPAN)
Daisuke Uchida (Hosei University, Tokyo, JAPAN) Takanori Murakami (MIYAJI ENGINEERING CO., LTD. , Chiba, JAPAN) Masaya Hirabayashi (East Japan Railway Company, Saitama, JAPAN) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Construction’s Role for a World in Emergency, Manchester, United Kingdom, 10-14 April 2024 | ||||
| Published in: | IABSE Symposium Manchester 2024 | ||||
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| Page(s): | 1158-1164 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/manchester.2024.1158 | ||||
| Abstract: |
Steel railway bridges in Japan were built in large numbers following the standard design established in 1885, and many older steel bridges are still in service today. One standard structure is that of an I-beam bridge with an I-beam main girder. One typical damege of these bridges is the fatigue crack, occurring near the radius of the bottom edge of the girder plate just above the fulcrum, propagating parallel to the bottom flange in an axial direction. The authors considered welding as a countermeasure for such cracks, but the guidelines for repair and strengthening of steel railway bridges in Japan do not provide details for welding steel members of steel bridges manufactured before 1940. In this study, we examined six bridges constructed in different years between 1889 and 1932, and after confirming their weldability, fatigue tests were conducted on butt welded joints made from their steel material to confirm fatigue strength. |
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| Keywords: |
welding repair older steel railway bridges
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