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德溪大桥采用(2×37+88+180+88+25)m=455m的连续刚架钢管混凝土梁拱组合桥。中间3跨为钢管混凝土系杆拱与预应力混凝土V形刚构组合而成的飞雁式拱桥,主拱和边拱均采用平行式钢管拱,拱轴线均为二次抛物线;主拱矢跨比为1/3,小桩号边拱矢跨比为1/2.29,大桩号边拱矢跨比为1/2.66。采用Midas/Civil 2010软件对大桥进行总体静力分析,结果表明:桥梁各主要构件的最不利内力及承载能力均满足规范要求。
Dexi Bridge adopts (2 × 37 + 88 + 180 + 88 + 25) m = 455m continuous rigid-frame CFST arch bridge. The middle 3 spans are Feiyan-type arch bridges which are made up of the concrete-filled steel tubular tied arch and the prestressed concrete V-shaped rigid frame. Both the main arch and the side arch use parallel steel pipe arches, and the arch axes are all quadratic parabolas. 1/2, the ratio of arch-to-arch cross-over ratio of small stake is 1 / 2.29, and the ratio of arch to span of large stake is 1 / 2.66. The overall static analysis of the bridge using Midas / Civil 2010 software shows that the most unfavorable internal forces and carrying capacity of the main components of the bridge meet the requirements of the code.