大跨连续刚构桥设计探讨

On exploration for design of large-span continuous rigid frame bridges

以铜川至黄陵高速公路沮河特大桥主桥设计为工程背景,介绍了大跨度连续刚构桥的设计特点,总结了大跨连续刚构桥结构几何尺寸、竖向预应力钢筋布置、合龙顺序、跨中预拱度等的设计要点及注意事项,为同类桥梁的设计提供了参考。

Taking the design for the main bridge of the super-large bridge at Juhe River along Tongchuan-Huangling Expressway, the paper introduces the design features for the large-span continuous rigid frame bridges, and sums up the design points and precautions for the large-span continuous rigid bridge, including the structural geometrical sizes, the allocation of the vertical prestressed reinforcement, the assembly order, and the midspan pre-camber, so as to provide some reference for the design of similar bridges.