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) ›› 2007, Vol. 26 ›› Issue (2): 14-20.

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提高PC三塔斜拉桥整体刚度研究

陶能迁1,王福敏2   

  1. 1.重庆交通大学,重庆 400074;2.重庆交通科研设计院,重庆 400067
  • 收稿日期:2006-01-09 修回日期:2015-01-22 出版日期:2007-04-15 发布日期:2015-01-22
  • 作者简介:陶能迁(1980—),男,湖北麻城人,硕士生,从事桥梁结构研究.E-mail:tao3975@sina.com

Study on Improving the W hole Rigidity of Prestressed Concrete Three-pylon Cable-stayed Spans

TAO Neng-qian1;WANG Fu-min2   

  1. 1.Chongqing Jiaotong University,Chongqing 400074,China; 2.Chongqing Communications Research&Design Institute,Chongqing 400067,China
  • Received:2006-01-09 Revised:2015-01-22 Online:2007-04-15 Published:2015-01-22

摘要: 三塔斜拉桥由于中间塔顶没有端锚索来限制它的水平变位,使得柔性结构斜拉桥的柔性进一步增大,随之而 来的是变形过大,整体刚度不能满足容许变形的要求.结合某长江大桥一三塔斜拉桥方案进行研究,借助已有改善 多塔斜拉桥刚度的方法,通过MIDAS计算分析对比,得出最适合此长江大桥刚度的改进方法,对其它地区三塔斜拉 桥的刚度改进方法有一定的借鉴作用.

关键词: 三塔斜拉桥, 刚度, 位移, MIDAS

Abstract: The intermediate pylon of three-pylon cable-stayed spans lacks back-stays to limit its longitudinal displacement, which makes the structure more flexible.As a result.its deformation is so considerable that the whole structure's rigidity fails to the request of deform ation tolerance.According to the analy8i8 of a blue print of a three-pylon cable-stayed bridge across the Changjiang River with the finite element software MIDAS,making use of the available methods at present,a suitable method to improve the rigldity of this three-pylon cable-stayed spans is brought forth,which can be applied in other eonstradions like this.

Key words: three·pylon cable·stayed spans, rigidity, displacement, MIDAS

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