中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2008, Vol. 27 ›› Issue (1): 24-27.

• • 上一篇    下一篇

箱肋拱桥的加固方法研究及分析

李立峰, 邵旭东, 张阳, 李显潮   

  1. 湖南大学 土木工程学院, 湖南 长沙 410082
  • 收稿日期:2006-11-11 修回日期:2007-04-01 出版日期:2008-02-20 发布日期:2016-11-14
  • 作者简介:李立峰(1971-),男,湖南沅江人,副教授,博士,主要从事大跨径桥梁结构基本理论研究。E-mail:HDLLF@21cn.com。

Research and Analysis of Reinforced Method for Box Ribbed Arch Bridge

LI Li-feng, SHAO Xu-dong, ZHANG Yang, LI Xian-chao   

  1. College of Civil Engineering, Hunan Normal University, Changsha Hunnan 410082, China
  • Received:2006-11-11 Revised:2007-04-01 Online:2008-02-20 Published:2016-11-14

摘要: 某箱肋拱桥主拱圈出现了大量的裂缝,荷载试验结果表明结构刚度偏低、冲击系数偏大。为了解决以上问题,通过增设拱肋之间的斜撑以增强横向联系,加强结构的整体性,并结合空间梁格有限元模型分析对比了加固前后的拱圈内力变化情况。结果表明,增设斜撑后,活载内力将下降20%左右,效果明显。

关键词: 箱形拱, 裂缝, 刚度, 斜撑

Abstract: Many cracks appear in a deck type box arch bridge, and the load test reveals that the rigidity is a little lower and dynamic response coefficient is a little higher for the bridge. A reinforced method of setting cross bracing between arches was suggested in order to enhance the transverse rigidity and structural integrality. The internal forces were analyzed pre and after reinforcement with the spatial grillage method. The analytical results reveal that about 20 percents of internal forces under the action of live load are reduced after cross bracing placed. The effect is obviously. This technique can be used in the same kind of bridges.

Key words: box ribbed arch bridge, crack, rigidity, cross bracing

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