结合实际工程,对新型波折腹板组合钢箱梁组成的以直代曲三跨连续梁建立全桥空间有限元模型,采用荷载增量步技术和生死单元技术对从施工到成桥的简支变连续过程进行有限元分析。结果表明,波折腹板组合钢箱梁刚度较大,各构件应力状态合理,整体受力性能良好,是一种自重轻,受力合理,满足快速施工要求的新型桥梁结构。 Based on the actual project, the finite element model of full bridge with straight-curved three-span continuous beam composed of a new type of corrugated web composite steel box girder is established. The simple incremental construction method Variable continuous process for finite element analysis. The results show that the rigidity of the composite box girder with corrugated webs is large, the stress state of each component is reasonable and the overall mechanical performance is good. It is a new type of bridge structure with light weight, reasonable force and meeting the requirements of rapid construction.