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January 1, 2026Japanese Journal of JSCE

Strategic Maintenance for Fatigue Cracks in End Diaphragms of Steel Railway Trough Girder Bridges

Miki SHIBATA Takeshi Hanji Kazuo Tateishi Masaru SHIMIZU Makoto YAMAGUCHI Yuichiro NIWA

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Key Points

This research aims to elucidate the relationship between bridge component condition and fatigue crack behavior in steel railway bridges.
Conducted fatigue tests and finite element analysis based on real bridge measurements
Explored the efficacy of stop hole repairs as a maintenance measure
Proposed a new management flow for addressing cracks in end diaphragms
Demonstrated a significant extension of the lifespan of components through stop hole repairs
Identified critical factors influencing crack propagation under varying loading conditions
Proposed improvements in maintenance strategies based on analytical findings

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Implication

Investigates fatigue cracks in bridge components, suggesting practical maintenance strategies.

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Cite This Study

SHIBATA et al. (2026) studied this question.

synapsesocial.com/papers/6a37805e24f042ddf4c5a730 https://doi.org/10.2208/jscejj.25-00302

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