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中文摘要：
洛阳瀛洲大桥主桥中跨为跨径120 m的异形空间组合拱肋中承式钢管混凝土拱桥,运用MIDAS/Civil软件建立了该桥的三维有限元整体计算模型。在成桥状态下,分析了不同外倾角对异形空间组合拱肋拱受力性能的影响。分析结果表明,拱脚处几乎不受外倾角变化影响,外倾角的变化对副拱肋的影响较主拱肋大,且随着外倾角的增大使得拱肋部分整体刚度减小。结论可为异形空间组合拱肋拱桥的设计与施工提供参考。
英文摘要：
The main bridge middle span of Yingzhou Bridge in Luoyang City is a special-shaped spatial combination arch-rib half-through concrete filled steel tubular arch bridge with main span of 120 m. On the basis of MIDAS/Civil software, the 3-D finite element integer model is established. Influence of different camber angle on special-shaped spatial combination arch-rib arch mechanical behavior is analyzed under completion state. The results show that the variety of camber angle almost has no influence on the arch foots, the influence of variety of camber angle on side arch rib is larger than the influence on main arch rib, and the increase of camber angle leads to the decrease of part of arch-rib stiffness. The result can provided the reference for design and construction of special-shaped spatial combination arch-rib arch bridge.
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