大跨度波形钢腹板组合梁桥横隔板优化分析

Optimized Analysis on Diaphragm Plate of Long-span Corrugated Steel Web Composite Girder Bridge

近年来,大跨度波纹钢腹板组合梁桥在高等级公路建设中应用得越来越多,但对其结构的研究还处于起步阶段,结构分析不够细致。以甘肃某高速公路波形钢腹板刚构-连续大桥设计为背景,利用桥梁空间计算软件Midas/Civil进行数值模拟,分析波形钢腹板箱梁横隔板的不同设置方式对结构力学性能的影响,通过优化横隔板布设来改善结构受力,为将来该类桥梁的设计提供借鉴和参考。

In recent years, there are more and more long-span corrugated steel web composite girder bridges in the construction of high-grade highways. But the study on its structure is still in the starting stage and its structural analysis is not detailed enough. Taking the design of an expressway corrugated steel web rigid-frame continuous bridge in Gansu as the background, this paper uses the bridge spatial calculation software Midas/Civil to carry out the numerical simulation and analyzes the influences of the different layout modes of corrugated steel web box girder diaphragm plate on the mechanical properties of structure. The stress of structure is improved by reasonably optimizing the layout of diaphragm plate, which can be referred for the design of the similar bridges in the future.