釜溪河高填背异形腹拱拱桥受力性能研究

实腹式高填背异形腹拱拱桥的受力具有特殊性,为研究异形腹拱及拱上填料对拱桥性能的影响,以釜溪河高填背异形腹拱拱桥为背景,利用有限元软件建立实桥模型,对各施工阶段进行受力分析,并对计算结果进行分析.结果表明:异形腹拱对主拱结构受力存在异化作用；拱上填料砌筑前、后主拱受力变化显著；墩顶、腹拱拱脚及主拱拱顶位置存在弯矩峰值,相对位移较大；拱上填料对异形腹拱异化作用的弱化效应方面有利,但在经济性方面有弊；该桥设置变形缝是必要的；该桥具有足够的承载力.

Study of Mechanical Behavior of Fuxi River Irregular Shape Spandrel Arch Bridge with High Filled Arch Back

The mechanical behavior of irregular shape spandrel arch bridge with high filled arch back has specialty of its own.To study the influence of the spandrel arch and the filling materials on the arch back on the performance of the bridge,the Fuxi River Bridge of the same kind was cited as an example,the model for the actual bridge was established by the finite element software,the mechanical behavior of various construction stages of the bridge was calculated and analyzed and the results of the calculation we...