钢筋混凝土系杆拱桥设计分析及稳定性计算

Design analysis and stability calculation of a reinforced concrete tied arch bridge

利用有限元空间分析模型,对某60m钢筋混凝土系杆拱进行了设计分析,同时计算了有风撑和无风撑两种状况下拱桥的空间稳定性,结果表明:该桥承载能力极限状态和正常使用极限状态下正截面应力及斜截面应力,以及弹性使用阶段拱肋、系杆、横梁截面应力验算均满足规范要求,有风撑的结构更加加强了桥梁结构的稳定性。

Using finite element space model,the design analysis of a 60m reinforced concrete tied arch bridge was done,and the spatial stability calculation of the arch bridge under both wind brace and no wind brace were both calculated.The results showed that the carrying capacity of the positive cross section stress and inclined cross section stress under the carrying capacity limit state and normal use limit state,and the arch ribs,tie rods and beam cross section stress under the flexible use stage all meet the specification requirements.The wind brace structure further strengthens the stability of the bridge structure.