Finite Element Analysis on Steam-curing Temperature Field and Temperature Stress of Concrete Box Girder

This paper based on the temperature measurement of No.001 box girder during steam curing in Dehui box girders precasting yard for Harbin-Dalian Passenger railway Line,built the finite element model of box girder by the MIDAS\CIVIL software to simulate variation of concrete hydration heat and boundary conditions,analyzed the temperature field of structure and made comparative analysis with the measured values,summed up the general laws over time of box girder temperature field and temperature stress during steam curing and proposed preventive measures and solutions of box girder temperature cracks.