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) ›› 2011, Vol. 30 ›› Issue (S2): 1241-1245.DOI: 10.3969/j.issn.1674-0696.2011.supp2.027

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轨道交通预应力混凝土槽型梁有限元分析

陈波1,赵晓波2   

  1. 1. 重庆轨道交通设计研究院,中国重庆400051; 2. 重庆轨道交通( 集团) 有限公司,中国重庆400051
  • 收稿日期:2011-05-18 出版日期:2011-12-30 发布日期:2015-01-22
  • 作者简介:陈波(1975—),男,重庆人,高级工程师,主要从事轨道交通桥梁结构设计及管理工作。

Finite Element Analysis of U-Shaped Beam of Prestressed Concrete Used in Rail Transit

CHEN Bo1,ZHAO Xiao-bo2   

  1. 1.Chongqing Rail Transit Designing Institute,Chongqing 400051,China; 2.Chongqing Rail Transit( Group) Co.,Ltd.,Chongqing 400051,China
  • Received:2011-05-18 Online:2011-12-30 Published:2015-01-22

摘要: 结合两种有限元软件的特点,模拟轨道交通双向预应力槽型梁的变形和受力分析。先通过Midas /Civil 分别 计算槽型梁在横向和纵向预应力作用下,钢束的预应力损失,利用虎克定律推算出相应的应变; 在ANSYS 中建立有 限元模型,以初始应变模拟预应力的作用,进行槽型梁在纵向、横向和双向预应力作用下受力与变形分析。

关键词: 轨道交通, 槽型梁, 预应力, 有限元

Abstract: Two finite element softwares are used to study the stress on and resultant deformation of a double pre-stressed concrete U-shaped beam for rail traffic. Firstly, the amount of reduced pre-stress in the steel strands of the U-shaped beam under lateral and vertical pre-stresses is calculated by using Midas Civil, and the degree of strain is obtained by using Hooker’ s Law. Secondly,a finite elernent model is established by using ANSYS, and the initial strain is applied to simulate the effect of prestress. Lastly, the stress on and resultant deformation of the concrete U-shaped beam under the lateral,vertical and both directions of pre-stress is analyzed respectively.

Key words: trail transit, u-shaped beam, pre-stress, finite element

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