| 长大连续坡道梯形轨道垂向动力学性能研究 |
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| 作者单位： | ;1.西南交通大学高速铁路线路工程教育部重点实验室;2.广州铁路股份有限公司广州工务段 |
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| 摘 要： | 梯形轨枕轨道是一种纵向轨枕轨道系统,轨枕由PC纵梁和横向钢管联接杆件构成。国内外城市轨道系统铺设梯形轨道的应用结果表明,梯形轨枕可大幅度提高对列车荷重的分散能力,且具有良好的减振和降噪性能。根据梯形轨枕轨道结构特点建立弹性地基梁-板模型,利用有限元方法计算在不同列车运行速度和不同坡度情况下梯形轨枕轨道系统的垂向动力响应,对在线路长、落差高的长大连续坡道上铺设梯形轨道的垂向稳定性进行论证。计算结果表明长大连续坡道上梯形轨枕垂向动力响应符合标准,可以在城市轨道交通的长大连续坡道区段铺设。
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| 关 键 词： | 长大连续坡道 梯形轨枕 有限元方法 垂向动力响应 |
Study on Vertical Dynamics Response of Ladder Sleeper Railway Track on Large and Continuous Ramps |
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| Institution: | ,MOE Key Laboratory of High speed Railway Engineering,Southwest Jiaotong University,The Guangzhou Track Maintenance Division of Guangzhou Railway Incorporated Company |
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| Abstract: | Ladder sleeper railway track is the longitudinal sleeper railway system. The sleeper is composed of longitudinal prestressed concrete beam and horizontal steel pipe. Not only can it bring full play to the sleeper performance,but also greatly improve the dispersion ability of load. Ladder sleeper railway track is effective in the reduction of vibration and noise. An elastic foundation beam-plate model is established based on the features of ladder sleeper railway track. The vertical dynamic response of the ladder sleeper railway track at different operating train speeds and slopes is calculated and analyzed. The paper demonstrates the feasibility of laying the ladder sleeper railway track on large and continuous ramps. |
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| Keywords: | Large and continuous ramp Ladder sleeper Finite elements method Vertical dynamic response |
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