CLC number: U213
On-line Access: 2021-01-11
Received: 2019-12-20
Revision Accepted: 2020-04-15
Crosschecked: 2021-01-07
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Lutz Auersch, Samir Said. Dynamic track-soil interaction—calculations and measurements of slab and ballast tracks[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A1900651 @article{title="Dynamic track-soil interaction—calculations and measurements of slab and ballast tracks", %0 Journal Article TY - JOUR
轨道-土体动态相互作用--板式轨道和有砟轨道的计算和测量创新点:1. 对多梁连续土体模型进行了频率波数域计算,研究了板式轨道和有砟轨道的动态特性;2. 针对锤击荷载和列车动载两种工况,使用可对位移进行时间积分的检波器(速度传感器)进行了测试,并基于理论和试验研究分析了不同轨道和轨道部件的振动特性. 方法:1. 通过在频率-波数域对多梁连续土体模型的计算以及对锤击荷载和列车动载两种工况的测试,分析板式轨道和有砟轨道的动态特性;2. 将不同轨道和轨道单元的柔度分别作为频率相关传递函数进行分析. 结论:1. 对于板式轨道,软轨下胶垫的钢轨出现了清晰的共振;测量得到的振幅和相位的剧烈下降可以解释为轨道-道砟或轨道-土体的高阻尼共振,即假定道砟与轨枕之间有软接触.2. 土体对有砟轨道和轨道板的低频振动特性有较大的影响;板式轨道的轨道板的柔度最小,整体变形最大,而板式轨道的钢轨的柔度最大,局部变形最大.3. 测试结果与计算结果基本一致;如果轨道模型的参数选取合适,则两者在许多细节上也较为吻合. 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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