基于受力性能优化的大型钢筋混凝土拱桥设计实践

结合包头市北梁腾空区外环路东河大桥工程设计实践,为优化桥体受力性能,有效提升上、下部结构经济合理性,对多跨不对称钢筋混凝土连拱桥主要设计要点进行研究。主要包括拱上建筑造型优化设计、拱轴线形式优化设计、拱脚构造优化设计、拱上建筑变形缝设计等拱桥构造优化设计和拱桥安全施工流程设计。为同类工程提供参考、借鉴。

Design Practice of Large-Scale Reinforced Concrete Arch Bridge Based on Mechanical Performance Optimization

Combined with the engineering design practice of Donghe Bridge of Outer-Ring Rd.in Beiliang Tengkong District of Baotou,in order to optimize the mechanical performance of the bridge and effectively improve the economic rationality of the upper&lower structures,the main design points of multi-span asymmetric reinforced concrete multi-arch bridge are studied.It mainly includes the optimization design of arch structure,arch axis form,arch foot structure,deformation joint of arch building,and the design of safety construction process of arch bridge.It may provide reference for similar projects.