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Life Cycle Reliability Assessment of Concrete Beam Bridges under Atmospheric Environment

The degradation model of reinforced concrete under general atmospheric environment was summarized. The life-cycle reliability assessment method of existing concrete beam bridges was proposed. The probability model of the life cycle resistance and load effect were established. The time-dependent reliability analysis program was compiled. The engineering application shows that the life-cycle reliability assessment method introducing the material degradation model can predict the remaining life of existing bridges scientifically, and ensure safe operation of bridges.