摘要
以广深港客运专线上跨度76 m+160 m+76 m连续梁拱桥为研究对象,采用空间有限元分析模型,计算了桥梁的自振特性,详细探讨了横撑刚度和拱肋截面形式对桥梁自振特性的影响,评价了桥梁的动力性能和列车运行安全性与舒适性,为此类桥梁的设计提供参考。
The natural vibration property of a concrete continuous beam-arch composite bridge with 76 ＋ 160 ＋76 m span on Guang-Shen-Gang high-speed railway is analyzed using 3D finite element model. The influence of lateral brace stiffness and arch lib section on the natural vibration property of the bridge is also studied. Dynamic properties of the bridge, running safety of train and the riding comfort of passengers are assessed in detail. Some useful results are gotten. It is beneficial for the design of this type of bridge.
出处
《铁道建筑技术》
2010年第6期1-3,8,共4页
Railway Construction Technology
关键词
连续梁拱桥
自振特性
动力性能
continuous beam-arch composite bridge
natural vibration property
dynamic property
