城市轨道交通槽形梁设计参数优化研究 |
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引用本文: | 梁岩,毛瑞敏,李杰,袁会丽.城市轨道交通槽形梁设计参数优化研究[J].铁道标准设计通讯,2018(3):49-52. |
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作者姓名: | 梁岩 毛瑞敏 李杰 袁会丽 |
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作者单位: | 郑州大学土木工程学院; |
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摘 要: | 以跨径为30 m的城市轨道交通槽形梁为研究对象,采用精细化有限元方法研究槽形梁设计几何参数梁高、道床板厚度及角隅斜率对其力学性能的影响。分析结果表明:槽形梁主梁截面刚度随梁高的增加而增加,在给定跨径30 m的情况下存在最佳梁高1.8 m;道床板厚度与横向跨度有关,横向跨度为4 m时,适宜的道床板厚度是0.26 m;角隅斜率对槽形梁的影响主要表现在结合处的力学性能,推荐使用1:(2.5~3.0)。
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关 键 词: | 城市轨道交通 槽形梁 有限元模型 参数优化 力学性能 |
Study on Design Optimization of Urban Rail Transit U-shaped Beam |
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Institution: | ,College of Civil Engineering,Zhengzhou University |
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Abstract: | Taking the urban rail transit U-shaped 30 m beam as the research object,this paper uses the finite element method is to study the influence of such U-shaped beam design geometric parameters as beam height,track bed slab thickness and corner slope on its mechanical properties.The calculation results show that the main girder cross section stiffness of U-shaped beam increases with the increase of the beam height,and the best height is 1.8 m in the case of a given 30 m span; the bed slab thickness is associated with the transverse span and the suitable thickness is 0.26 when the transverse span is 4 m;the influence of the corner slope on the U-shaped beam at the junction is mainly demonstrated by mechanical properties,thus,1:(2.5 ~ 3.0) is recommended. |
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Keywords: | Urban rail transit U-shaped beam Finite element model Parameter optimization Mechanical properties |
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