预应力混凝土梁桥徐变对施工预拱度影响分析

Shrinkage and creep of concrete is a viscoelastic material characteristics of natural time-varying. Shrinkage and creep of concrete on the large span prestressed concrete bridge construction of the linear and has a great influence on stress control. In this paper, finite element analysis software MYDAS speed of Wu Jing Han 2 # North River Bridge construction control simulation, the understanding of concrete shrinkage and creep of the principles and essence. Under load on the impact of shrinkage and creep conducted in-depth discussion and analysis. Further understanding of bridge construction for the creep effect of camber and better guide the monitoring and control of large box girder.