| 城市轨道交通焊接接头不平顺研究与分析 |
| Research and Analysis on Welded Joint Irregularity in Urban Mass Transit System |
| 投稿时间：2009-05-13 |
| 中文关键词:轨道交通 焊接接头 不平顺 三分之一倍频 |
| 英文关键词:rail transit welded joints irregularity one third octave band |
| 基金项目:国家自然科学基金项目(50878158) |
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| 中文摘要: |
| 通过对轨道交通线路的钢轨焊接接头的不平顺进行现场测试，分析了焊接接头的型式与分布规律，并利用matlab编程对各条线路接头不平顺的三分之一倍频进行分析，研究各条线路的短波不平顺分布规律，对进一步研究轮轨力和轮轨滚动噪声有重要意义。分析结果表明，在测试的钢轨接头中，不平顺幅值主要分布在0.1~0.6 mm范围内，且凸型的不平顺比凹型的不平顺严重，但轨面短波不平顺波长则集中在0.08~0.2 m波长范围内。 |
| 英文摘要: |
| Based on the field measured data of rail transit lines, the irregularity shape and distribution of the welded joints are analyzed. Programming with Matlab is applied to analyze one third octave in order to study the law of short wave irregularity distribution, which is significant for further research on wheel rail contact force and rolling noise. The analysis results show that the measured welded joints with irregularity amplitude of 0.1 ~ 06 mm are in the majority, the convex shaped welded joint irregularity is more serious than the concave shaped one, and the wavelength of short wave irregularity mainly ranges from 0.08 m to 0.2 m. |
| 李秋玲,练松良.城市轨道交通焊接接头不平顺研究与分析[J].石家庄铁道大学学报：自然科学版,2009,(3):20-24. |
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