考虑钢-混组合梁的大跨度桥梁设计与应用研究

Design and Application Research of Large-Span Bridges Considering Steel-Concrete Composite Beams

针对大跨度桥梁施工难度大、施工环境复杂等问题,分析了钢-混组合梁大跨度桥梁的设计与施工,并对钢-混组合梁应用过程中的疲劳损伤进行分析。结果表明,随着车重的增大,组合梁各构件的冲击系数和疲劳寿命均逐渐减小,与实际情况一致。

In view of the difficulty and complex construction environment of long-span bridge construction, the design and construction of steel-mixed composite beams are studied and analyzed, and the fatigue damage of steel-mixed composite beams in the application process is analyzed. The results show that the impact coefficient and fatigue life of each component of the composite beam decrease gradually with the increase of vehicle weight, which is consistent with the actual situation.