下穿铁路框架地道桥参数分析
Journal: Engineering Technology Development DOI: 10.12238/etd.v3i4.5300
Abstract
为研究设计参数对铁路框架地道桥受力特性的影响，依托实际工程，采用ANSYS有限元分析软件建立实体单元模型，模拟恒载与列车荷载共同作用下框架地道桥的受力情况。探讨结构随桥长、斜交角度以及掖角尺寸变化时的变形和应力规律。研究结果表明：在恒载与列车荷载共同作用下，正交框架地道桥桥长的变化对结构影响较小，斜交框架地道桥随着桥长的增加，顶板与墙体位移均呈现逐渐增大的趋势，顶板与墙体应力均呈现先减后增的趋势；保持斜交角度不变，随着掖角尺寸的变化，顶板位移与墙体位移以及顶板应力与墙体应力呈现出不同的变化趋势。
Keywords
地道桥；斜交；掖角尺寸；实体单元；参数分析
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[6] Vega J，Fraile A，Alarcon E，et al. Dynamic response of underpasses for high-speed train lines [J]. Journal of Sound and Vibration，2012，331(23):5125-5140.
[7] 王庆贵.斜交框架地道桥的参数分析[J].盐城工学院学报(自然科学版),2013,26(01):75-78.
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