预应力混凝土连续宽箱梁偏载系数研究

Research of Unbalanced Coefficient of Prestressed Concrete Continuous Wide Box Girder

以南通通启路高架工程的预应力混凝土单箱多室连续宽箱梁桥为背景，建立实体单元空间有限元模型，将箱梁跨中截面各位置点的正应力增大系数计算值与常用简化计算方法所得值进行对比，探讨简化计算方法的可行性，供同类工程设计参考。

Taking prestressed concrete single box multi-cells continuous wide box Girder Bridge at Tongqi street Nantong city as the background, the paper establishes entity unit spa-tial finite element models. There is a comparison between calculated value which is got though increasing the coefficient of normal stress in each location point of box Girder min-span calculation section and the value calculated by common sim-plified method. The paper discusses the feasibility of the simp-lified calculation method and offers a reference for the similar engineering design.