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基于探地雷达的高铁无砟轨道结构层病害检测

廖红建,  朱庆女,  昝月稳,  谢勇勇,  孙俊煜

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文章导航 > 西南交通大学学报  > 2016 >  29(1): 8-13.
廖红建, 朱庆女, 昝月稳, 谢勇勇, 孙俊煜. 基于探地雷达的高铁无砟轨道结构层病害检测[J]. 西南交通大学学报, 2016, 29(1): 8-13. doi: 10.3969/j.issn.0258-2724.2016.01.002
引用本文: 廖红建, 朱庆女, 昝月稳, 谢勇勇, 孙俊煜. 基于探地雷达的高铁无砟轨道结构层病害检测[J]. 西南交通大学学报, 2016, 29(1): 8-13. doi: 10.3969/j.issn.0258-2724.2016.01.002
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LIAO Hongjian, ZHU Qingnü, ZAN Yuewen, XIE Yongyong, SUN Junyu. Detection of Ballastless Track Diseases in High-Speed Railway Based on Ground Penetrating Radar[J]. Journal of Southwest Jiaotong University, 2016, 29(1): 8-13. doi: 10.3969/j.issn.0258-2724.2016.01.002
Citation: LIAO Hongjian, ZHU Qingnü, ZAN Yuewen, XIE Yongyong, SUN Junyu. Detection of Ballastless Track Diseases in High-Speed Railway Based on Ground Penetrating Radar[J]. Journal of Southwest Jiaotong University, 2016, 29(1): 8-13. doi: 10.3969/j.issn.0258-2724.2016.01.002
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基于探地雷达的高铁无砟轨道结构层病害检测

doi: 10.3969/j.issn.0258-2724.2016.01.002
基金项目: 

国家自然科学基金资助项目(41172276,51279155)

详细信息
    作者简介:

    廖红建(1962-),女,教授,博士,博士生导师,研究方向为岩土工程数值分析,E-mail:hjliao@mail.xjtu.edu.cn

Detection of Ballastless Track Diseases in High-Speed Railway Based on Ground Penetrating Radar

    摘要
  • 摘要: 为了检测高速铁路(高铁)无砟轨道混凝土结构内部在施工过程中产生的缺陷,避免在高速列车荷载作用下发展成路基病害,运用探地雷达技术对高铁无砟轨道结构进行了二维正演模拟分析.基于有限差分法,在时间域上推导了探地雷达二维正演模拟方程.针对易形成高铁无砟轨道病害缺陷的多种复杂工况,建立了CRTSⅡ型板式无砟轨道的地电模型,分别对CA砂浆层不同填充程度、CA砂浆层硬化过程进行了二维正演数值模拟,分析了探地雷达二维正演模拟图像的特征.模拟结果表明,二维正演模拟可以清楚地分辨板式无砟轨道结构内不同介质层的分界面,以及钢筋的数目和位置.

     

    Abstract: A two-dimensional forward simulation was conducted to analyze slab ballastless track diseases in high-speed railway using the ground penetrating radar (GPR) technique. Based on the finite difference method, a two-dimensional forward simulation equation for GPR was deduced. By considering the different filling degrees and hardening progress of CA mortar layer, GPR geoelectric models for CRTSⅡ slab ballastless track were established and forward simulated, and the GPR picture features of the forward simulation were analyzed. The simulation results show that the forward simulation can clearly identify the interfaces between different dieletric layers and the number and location of reinforcement in slab ballastless track.

     

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    • 参考文献(15)
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出版历程
  • 收稿日期:  2015-04-03
  • 刊出日期:  2016-01-25

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