十里河滩景观桥桥型结构优化设计研究

贵阳市花溪区十里河滩七驾车景观桥为上承式钢筋混凝土箱形坦拱桥,设计过程中对常规拱桥方案与少推力拱桥方案进行比选,结合特殊的地形、地质条件,最终选择了基础开挖较小、经济性好、结构合理的少推力拱桥方案,利用边斜杆与承台固结,形成自由悬臂端的方法较好的解决了拱脚较大的水平推力,通过建立结构有限元计算模型,对其动静力性能进行分析,结果表明,少推力拱的受力性能良好,经济可行,外形美观,与景区环境较为协调。

Research of Structure Optimization Design for Ten Mile River Landscape Bridge

Guiyang Huaxi district landscape bridge is seven miles the beach driving bearing type reinforced concrete box arch bridge, the design process of conventional arch bridge solutions with less thrust arch bridge to carry on the comparison, the combination of special terrain, geological conditions, finally chose the foundation excavation is small, economical, reasonable structure, less thrust of arch bridge using edge inclined rod and bearing platform consolidation, forming the free cantilever end method better solve the horizontal thrust at arch feet larger, by establishing the structure finite element model, analyzes the static force performance, the results show that the thrust of arch stress performance good, less economically feasible, beautiful appearance, and the scenic spot environment more harmonious.