铁道标准设计2016，Vol.60Issue(5)：48-53,54,7.DOI:10.13238/j.issn.1004-2954.2016.05.011
客货共线铁路双拱肋大跨度钢桁拱桥设计研究
Study on Long-span Steel Truss Arch Bridge with Double Arch Ribs on Mixed Passenger and Freight Railway
赵涛1
作者信息
- 1. 中铁第四勘察设计院集团有限公司，武汉 430063
- 折叠
摘要
Abstract
The construction technology of the steel truss arch bridge in China has reached the international advanced level. However, most of these steel truss arch bridges are used for highway and only a few are dedicated for railway. In this paper, the Dongping Bridge on Guiyang-Guangzhou railway line, which is a double-track steel truss arch bridge with the longest single span of 286 m in China, is taken as a case for study. After the determination of the structural style and dimensions, FE model of the bridge is built and the mechanic properties of the long span steel truss arch bridge are further revealed by plane and 3-D space analysis. The distribution rules of the internal forces and stresses of the bridge with different arch axis and rise-span ratios under different loading conditions are compared to reveal the mechanical characteristics of long-span steel truss arch bridge. The results show that the circular curve and the quadratic parabola arch axis for this kind of bridge are reasonable, and the greater the rise-span ratio of the upper and lower ribs and the greater the difference of both, the better the economy within certain reasonable ranges.关键词
铁路桥梁/客货共线铁路/双拱肋/钢桁拱桥/设计Key words
Railway bridge/Mixed passenger and freight railway line/Double Arch rib/Steel truss arched bridge/Design分类
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赵涛..客货共线铁路双拱肋大跨度钢桁拱桥设计研究[J].铁道标准设计,2016,60(5):48-53,54,7.
