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 (5): 5-8.

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自锚式悬索桥收缩徐变效应分析

胡建华1,唐茂林2,刘蓉1,王忠彬2   

  1. 1.湖南交通规划勘察没计院,湖南 长沙 410008;2.西南交通大学,四川 成都 610031
  • 收稿日期:2006-10-11 修回日期:2015-01-22 出版日期:2007-10-15 发布日期:2015-01-22
  • 作者简介:胡建华(1966—),男,教授级高工,工学博士.E-mail:hujianhua@hnjtsjy.com

Analysis of Shrinkage and Creep on Self-Anchored Suspension Bridge

HU Jian-hua1,TANG Mao-lin2,LIU Rong1,WANG Zhong-bin2   

  1. 1.Hunan Provincial Communications Planning Survey&Design Institute,Hunan Changsha 410008,China; 2.Southwest Jiaotong University,Sichuan Chengdu 610031,China
  • Received:2006-10-11 Revised:2015-01-22 Online:2007-10-15 Published:2015-01-22

摘要: 由于自锚式悬索桥的主缆是锚固在加劲梁上的,采用钢筋砼或预应力砼构件的自锚式悬索桥,加劲梁和桥塔 的收缩、徐变必然引起主缆和吊索的内力变化.从而导致结构内力和支点反力的重分布以及结构线形的变化,在结 构设计时必须考虑砼收缩徐变的影响.采用初应变法推导出考虑砼加荷龄期的结构收缩徐变效应分析的有限元表 达式,用FORTRAN语言编写了计算机程序,并以广东佛山平胜大桥为例,进行结构成桥后的收缩徐变效应分析,研 究砼收缩徐变效应对自锚式悬索桥结构的影响.

关键词: 自锚式悬索桥, 砼, 收缩, 徐变, 内力重分布

Abstract: Because the self-anchored suspension bridge adopts reinforced concrete or prestressed concrete members and its cables are anchored on the stifening girder,the shrinkage and creep of stifening girder and bridge tower will induce the changes of internal forces of cables and hangers,which results in the redistribution of action efects and reactions and the transformation of structure state.So the influence of concrete shrinkage and creep must be taken into account in the design of stmcture.The initial strain method was adopted to deduce the finite element expression of shrinkage and creep efects on the structure while taking the age of loading into account,and a programme was compiled by FORTRAN.Taking Pingsheng Bridge of Guangdong as an examples,the analysis of shrinkage and creep on self-anchored suspension bridge was carried on after bridge finished.

Key words: self-anchored suspension bridge, concrete, shrinkage, creep, redistribution of internal forces

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