Based on Latin hyper sampling stochastic simulation,a probabilistic analysis was performed for super-long PC structure.Concrete material's time-dependent property,such as creep coefficient,shrinkage strain,compressive strength,prestressing force and relative humidity are modeled as random variables.Taking an super-long PC frame structure under 10 645 d((about) 30 years) seasonal temperature load as example,the correlation between structural variation and concrete material's time-dependent property were studied.The results show: the variation range of structure increases with time.Prestressing force and concrete compressive strength are major factors for column displacement of first floor and first principal stress of second floor plate.The shrinkage model uncertainty is also important for first principal stress of second floor plate.