波形钢腹板PC组合箱梁桥与PC箱梁桥力学性能对比分析

Comparison of Mechanical Properties of PC Composite Box Girder Bridge with Corrugated Steel Webs and PC Box Girder Bridge

为分析波形钢腹板对PC箱梁桥在力学性能上的影响,利用结构有限元软件Midas分别对波形钢腹板PC组合箱梁桥与预应力箱梁桥进行建模,而后在结构内力、挠度等力学性能、经济性以及施工工艺上进行对比分析。结果表明,波形钢腹板箱梁桥比PC组合箱梁桥更具优势,特别是在大跨度连续梁上,前者具有较大应用潜力。

In order to analyze the influence of corrugated steel webs on the mechanical properties of PC box girder bridges,the structural finite element software MIDAS was used to model PC composite box girder bridges with corrugated steel webs and prestressed box girder bridges respectively,and then the structural internal force,deflection mechanical properties,economy and construction technology were compared and analyzed.The results show that,through the comparative analysis of the two models established by the software,the corrugated steel web box girder bridge has more advantages than the PC composite box girder bridge.Especially in the long-span continuous beam,the corrugated steel web prestressed box girder bridge has great application potential.