Reliability Models and Service Life Estimation of Concrete Structure under Freeze-thaw Action

摘要

Based on macro-damage mechanics theory, the mechanical degradationrnof concrete structures under the action of freeze-thaw cycles can bernequivalent to the damage due to alternate action of positive andrnnegative peak temperature. A revised three-parameter WeibullrnDistribution Model is proposed for the reliability analysis of concreternstructures under freeze-thaw action. Based on the quantitative analysisrnof frost damage in concrete, the formula for evaluating the remainingrnservice life of concrete structure after freeze-thaw cycles is alsornderived. This model can serve as a reference for the maintenance,rndesign and the life prediction of coastal and offshore structures in coldrnregions.