Durability analysis of service pre-stressed concrete structure under general atmospheric environment

Under general atmospheric environment,the carbonation of concrete is the main cause of the decline of the durability of pre-stressed concrete structures.Based on the corrosion damage characteristics of pre-stressed concrete structures,with practical engineering examples,the un-certainty of structural durability influence factors such as concrete cover depth,concrete carbonation coefficient and local environmental influence are considered,through Monte Carlo simulation,the stochastic durability evaluation method based on corrosion failure criteria of service pre-stressed concrete structures is suggested,which will provide reference and quantified basis for service concrete structure under general atmo-spheric environment on durability evaluation,durability re-design and maintenance.