A long-life maintenance strategy for existing steel railway structures in Japan

Weiwei Lin*, Nozomu Taniguchi, Teruhiko Yoda

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


Since Japan's first rail line between Shinbashi and Yokohama opened on 14 October 1872, Japanese National Railways (JNR) has been expanding the railway network using many short span railway bridges. As a result, some of existing railway bridges become old nowadays. With aging, deterioration resulting from fatigue and corrosion becomes a severe problem and seriously affects the serviceability and durability of bridges. Therefore, appropriate preventive maintenance or strengthening should be performed on aged steel railway structures to ensure their reliability and safety in service condition. On this background, a maintenance method for existing steel railway bridges using rubber-latex mortar, Glass Fiber Reinforced Polymer (GFRP) plates, lightweight rapid hardening concrete, and reinforcement, was reported in this study. Both field tests and numerical analyses were performed to confirm the actual effectiveness of this strengthening method. According to the results obtained from this study, the present renovation method can greatly enhance the rigidity and reduce the stress levels of old steel railway bridges, resulting in the extension of their residual service lives.

Original languageEnglish
Title of host publication20th Congress of IABSE, New York City 2019
Subtitle of host publicationThe Evolving Metropolis - Report
PublisherInternational Association for Bridge and Structural Engineering
Number of pages7
ISBN (Electronic)9783857481659
ISBN (Print)9781510895379
Publication statusPublished - 1 Jan 2019
MoE publication typeA4 Conference publication
EventIABSE Congress - New York City, United States
Duration: 4 Sept 20196 Sept 2019
Conference number: 20

Publication series

NameReport / IABSE Symposium
ISSN (Print)2221-3783


ConferenceIABSE Congress
Country/TerritoryUnited States
CityNew York City


  • GFRP plates
  • Lightweight concrete
  • Maintenance
  • Rubber-latex mortar
  • Steel structures


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