Establishment of residual strength evaluation system and corrosion prediction of weathering steel bridges based on wind conditions and local environmental factors

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Observation of airborne salt as a regional environment and geomorphological environment in the target bridge, observation of airborne salt in the local environment of the target bridge, measurement of the amount of corrosion due to exposure test pieces and comparison of the observed values of airborne salt and airborne salt of the bridge around by numerical simulation have been carried out, in order to establish a system for estimating the amount of corrosion and airborne salt around the bridge section from the structural specifications of the bridge, wind speed and direction and airborne salt of bridge construction point.