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A quick estimation system of life-cycle costs including seismic and flood risks for steel bridges in Taipei City of Taiwan

Author

Listed:
  • Chien-Kuo Chiu

    (National Taiwan University of Science and Technology)

  • I-hsiang Liao

    (National Taiwan University of Science and Technology)

  • Wei-Rung Tang

    (National Taiwan University of Science and Technology)

  • Eiki Yamaguchi

    (Kyushu Institute of Technology)

Abstract

In this work, a quick estimation of the life-cycle costs (LCCs) of steel bridges is made to determine an effective and cost-efficient maintenance strategy. The LCCs of steel bridges herein include initial construction costs, maintenance costs of members/components, anti-corrosion painting costs, costs associated with seismic and flood risks, demolition costs, and the recovery benefit of steel. With respect to periodic maintenance costs, the maintenance times for members/components are calculated from deterioration rates, and associated costs are thus determined. For anti-corrosion painting costs, the service life of anti-corrosion painting is determined from the thickness consumption rate of film by painting material, and the associated anti-corrosion painting costs are calculated. Finally, the LCCs of 24 steel bridges located in Taipei City of Taiwan with various anti-corrosion painting strategies are calculated using the proposed estimation system to determine the most cost-effective anti-corrosion strategies. Based on the LCCs of 24 steel bridges, this work also proposes a simplified formula that can be used to estimate the LCCs of a steel bridge located in a similar environment in the preliminary design stage.

Suggested Citation

  • Chien-Kuo Chiu & I-hsiang Liao & Wei-Rung Tang & Eiki Yamaguchi, 2025. "A quick estimation system of life-cycle costs including seismic and flood risks for steel bridges in Taipei City of Taiwan," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 121(1), pages 355-381, January.
    • Handle: RePEc:spr:nathaz:v:121:y:2025:i:1:d:10.1007_s11069-024-06812-w
    DOI: 10.1007/s11069-024-06812-w
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