华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (12): 87-91.

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大跨度钢管混凝土拱桥的非线性空气静力稳定性

颜全胜1 李立军2   

  1. 1.华南理工大学 交通学院,广东 广州 510640;2.广州地铁总公司,广东 广州 510038
  • 收稿日期:2005-01-01 出版日期:2005-12-25 发布日期:2005-12-25
  • 通信作者: 颜全胜(1968-),男,博士,教授,主要从事大跨度桥梁研究 E-mail:cvqshyan@scut.edu.cn
  • 作者简介:颜全胜(1968-),男,博士,教授,主要从事大跨度桥梁研究

Nonlinear Aerostatic Stability of Long-Span Concrete-Filled Steel-Tube Arch Bridge

Yan Quan-sheng1  Li Li-jun2   

  1. 1.College of Traffic and Communications,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China;2.Guangzhou Metro Corporation,Guangzhou 510038,Guangdong,China)
  • Received:2005-01-01 Online:2005-12-25 Published:2005-12-25
  • Contact: 颜全胜(1968-),男,博士,教授,主要从事大跨度桥梁研究 E-mail:cvqshyan@scut.edu.cn
  • About author:颜全胜(1968-),男,博士,教授,主要从事大跨度桥梁研究

摘要: 同时考虑静风荷载非线性和结构几何非线性的影响,运用增量迭代法分析了大跨度钢管混凝土拱桥成桥状态下的非线性空气静力稳定性,编制了相应的计算程序,并结合一座主跨为368m的钢管砼拱桥—— 茅草街大桥进行了计算,讨论了风荷载的非线性、风力的初始攻角、矢跨比、横撑设置等参数对大跨度钢管混凝土拱桥侧向稳定性的影响.

关键词: 大跨度钢管混凝土拱桥, 静风效应, 空气静力稳定性, 几何非线性

Abstract:

The analysis for the aerostatic stability of the long-span concrete-filled steel·tube arch bridge-with an in-crement iteration approach is presented.The nonlinear efects of the aerostatic load and the structural geometry are considered in the analysis,and a computing procedure iS then developed.By analyzing the aerostatic stability of the Maocaojie Bridge with a main span of 368 m,the effects of the parameters such as the nonlinearity of the aerostatic load,initial attack angle and the rise-span ratio an d lateral bracing on the lateral aerostatic stability of long‘span concrete-filled steel-tube arch bridges are finally discussed.

Key words: long-span concrete-filled steel-tube arch bridge, aerostatic efects, aerostatic stability, geometric non-linearity