Abstract:The steel beam and concrete deck of steel-concrete composite continuous beam bridge are connected by shear studs, and the shrinkage and creep deformation of concrete deck will be restrained by steel beam, which will cause stress redistribution of concrete deck and steel beam. In this paper, a steel-concrete composite continuous beam bridge of an urban expressway project is taken as the analysis object, the results show that the shrinkage and creep effect has certain negative effect on the deflection and stress of the composite bridge. The change in the annual average relative humidity has little effect on the deflection of the bridge and the stress of steel girders. The increase in relative humidity is beneficial to the stress of the bridge deck.
