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

Chien-Kuo Chiu, I-hsiang Liao (), Wei-Rung Tang and Eiki Yamaguchi
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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

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2025, vol. 121, issue 1, No 15, 355-381

Abstract: 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.

Keywords: Life-cycle costs; Steel bridge; Seismic and flood risk; Anti-corrosion painting system; Deterioration rate (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11069-024-06812-w

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