| 轨道交通预应力混凝土槽型梁有限元分析 |
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| 引用本文： | 陈波,赵晓波.轨道交通预应力混凝土槽型梁有限元分析[J].重庆交通大学学报(自然科学版),2011(Z2):1241-1245. |
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| 作者姓名： | 陈波 赵晓波 |
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| 作者单位： | 重庆轨道交通设计研究院;重庆轨道交通(集团)有限公司 |
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| 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.
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| 关 键 词： | 轨道交通 槽型梁 预应力 有限元 |
Finite Element Analysis of U-Shaped Beam of Prestressed Concrete Used in Rail Transit |
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| CHEN Bo,ZHAO Xiao-bo.Finite Element Analysis of U-Shaped Beam of Prestressed Concrete Used in Rail Transit[J].Journal of Chongqing Jiaotong University,2011(Z2):1241-1245. |
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| Authors: | CHEN Bo ZHAO Xiao-bo |
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| Institution: | 1.Chongqing Rail Transit Designing Institute,Chongqing 400051,China; 2.Chongqing Rail Transit(Group) Co.,Ltd.,Chongqing 400051,China) |
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| 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. |
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| Keywords: | trail transit u-shaped beam pre-stress finite element |
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