Determining the repair ranking of existing RC bridges using fuzzy synthetic evaluation method

Abstract

The main purpose of this paper was to adopt the fuzzy synthetic evaluation method, which uses the analytic hierarchy process (AHP) for determining a weight vector, to assess the repair ranking of existing reinforced concrete (RC) bridges. Five existing RC bridges in Taiwan were used as illustrative examples. To verify the feasibility and reliability of the proposed method, the previous wide reliability bound method was also employed to assess the same five existing RC bridges. The results obtained from both the proposed and wide reliability bound methods produced the same repair rankings. The results represented in this study can be used as an engineering decision‐making tool for the repair, strengthening or demolition rankings for existing RC bridges.

Key words:

• fuzzy synthetic evaluation method
• compressive strength
• carbonation depth
• chloride ion content
• corrosion potential

Notes

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