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以某中承式钢管混凝土拱桥为研究对象,该桥主跨190m,主拱圈由四肢钢管组成的等宽度等高度空间桁架结构,拱脚临时铰采用转轴铰,拱上立柱为钢管混凝土立柱,吊杆采用高强钢绞线,桥面系为钢纵梁、钢横梁和钢筋混凝土桥面板的组合结构。利用大型通用有限元程序MIDAS-Civil进行全桥结构施工、运营阶段静力分析,计算结果表明施工和运营阶段各杆件的应力和稳定性能满足规范要求。
Taking a half-through concrete-filled steel tube arch bridge as the research object, the main span of the bridge is 190m. The main arch ring is composed of four limbs of steel pipes of equal width and space height. The temporary hinge of the arch foot uses the hinge of the steel tube, Suspension using high-strength steel wire, the bridge deck for the steel stringers, steel beams and reinforced concrete bridge deck combination structure. The use of large-scale universal finite element program MIDAS-Civil for full-bridge structure construction, operation stage static analysis, the results show that the construction and operation of the bar of the stress and stability to meet regulatory requirements.