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首页 > 过刊浏览>2023年第51卷第8期 >1267-1277. DOI:10.11908/j.issn.0253-374x.22134
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基于面波多道分析法的无砟轨道性能劣化反演方法
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作者:
作者单位:

1.同济大学 道路与交通工程教育部重点实验室，上海 201804;2.同济大学 上海市轨道交通结构耐久与系统安全重点实验室，上海 201804;3.河南工业大学 土木工程学院，河南 郑州 450001

作者简介:

胡 猛（1995—），男，博士生，主要研究方向为无砟轨道损伤检测。E-mail：humeng@tongji.edu.cn

通讯作者:

许玉德（1965—），男，教授，博士生导师，工学博士，主要研究方向为轨道管理及养修技术。 E-mail：xuyude@tongji.edu.cn

中图分类号:

U216.3

基金项目:

国家自然科学基金（51908197）


Inversion Method of Ballastless Track Performance Degradation Based on Multi-channel Analysis of Surface Waves
Author:
Affiliation:

1.Key Laboratory of Road and Traffic Engineering of the Ministry of Education， Tongji University， Shanghai 201804， China;2.Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety， Tongji University， Shanghai 201804， China;3.College of Civil Engineering， Henan University of Technology， Zhengzhou 450001， China

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    摘要:

    提出了基于面波多道分析法的无砟轨道性能劣化反演方法。以无砟轨道理论面波频散曲线为基础，分析具有不同劣化程度的无砟轨道面波频散特性，构建无砟轨道性能劣化反演方法，并研究激振频率与检波器布设方式对反演效果的影响。结果表明：无砟轨道的面波频散曲线在低频与高频段分别取决于CA砂浆与轨道板的横波速度。为提高反演效果，建议将激振频率取为50 kHz，最小偏移距取大于或等于0.05 m，道间距取0.05 m，并尽可能增大检波器排列长度。

    Abstract:

    The inversion method of ballastless track performance degradation based on the multi-channel analysis of surface waves was proposed. Based on the theoretical surface wave dispersion curve， the dispersion characteristics of ballastless tracks with varying degrees of degradation were analyzed. A method for inverting the ballastless track performance degradation was constructed， and the effect of excitation frequency and detector placement mode on the inversion effect was studied. The results indicate that the shear wave velocity of CA mortar and track slabs respectively determines the surface wave dispersion curve of ballastless tracks at low and high frequencies. To enhance the inversion effect， the excitation frequency is recommended to be set at 50 kHz， the minimum offset distance should be greater than or equal to 0.05 m， and the channel spacing between tracks should be 0.05 m. Moreover， the length of the detector arrangement should be increased as much as possible.

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胡猛,许玉德,李少铮,薛志强,曹世豪.基于面波多道分析法的无砟轨道性能劣化反演方法[J].同济大学学报(自然科学版),2023,51(8):1267~1277

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  • 收稿日期:2022-03-26
  • 在线发布日期: 2023-08-28
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