[1]陈基松,刘涛,耿螣川,等.高速铁路箱梁伸缩缝位移传感器研究[J].高速铁路技术,2024,15(03):45-49.[doi:10.12098/j.issn.1674-8247.2024.03.009]
　CHEN Jisong,LIU Tao,GENG Tengchuan,et al.Study on Displacement Sensor for Expansion Joint of High-speed Railway Box Girder[J].HIGH SPEED RAILWAY TECHNOLOGY,2024,15(03):45-49.[doi:10.12098/j.issn.1674-8247.2024.03.009]
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高速铁路箱梁伸缩缝位移传感器研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
15卷
期数:
2024年03期
页码:
45-49
栏目:
研究创新
出版日期:
2024-06-20

文章信息/Info

Title:
Study on Displacement Sensor for Expansion Joint of High-speed Railway Box Girder
文章编号:
1674-8247（2024）03-0045-05
作者:
陈基松1; 刘涛1; 耿螣川2; 郭静静1; 张平磊1; 孙长森1
1.大连理工大学， 辽宁?大连116024;2.中国铁路设计集团有限公司， 天津 300251
Author(s):
CHEN Jisong1; LIU Tao1; GENG Tengchuan2; GUO Jingjing1; ZHANG Pinglei1; SUN Changsen1
1.Dalian University of Technology ，Dalian 116024 ，China;2.China Railway Design Corporation ，Tianjin 300251 ，China
关键词:
高速铁路; 箱梁伸缩缝; 抗振动位移传感器; 抗电磁干扰位移传感器; 光纤位移传感器
Keywords:
high-speed railway; box girder expansion joint; vibration-resistant displacement sensor; electromagnetic-interference-resistant displacement sensor; fiber-optic displacement sensor
分类号:
TP212
DOI:
10.12098/j.issn.1674-8247.2024.03.009
文献标志码:
A
摘要:
高速铁路箱梁状态对轨道平顺性和行车安全具有决定性作用。由于箱梁滑移变化缓慢且微小，同时需克服电力牵引产生的强电磁干扰，实现自动化监测面临较大挑战。该问题的难点在于箱梁伸缩缝的起始缝宽不同，只有实现等精度测量，才能使不同箱梁伸缩缝的变化具备可比性。本文设计了一种光学低相干高速铁路箱梁伸缩缝位移传感器，在实验室条件下进行了抗振动性能测试，验证了传感器在常见低频振动工况下的性能，并在京津城际高速铁路简支箱梁伸缩缝的监测中应用。结果表明：受日照和温度的影响，箱梁伸缩缝上下表面的位移差异可达150μm，传感器的实测长期监测精度可达50μm。研究成果为实现高速铁路箱梁伸缩缝自动化监测提供了参考借鉴。
Abstract:
The condition of box girders in high-speed railways directly determines track smoothness and operational safety. Slow and minute variations in girder displacement pose challenges for monitoring，particularly in overcoming strong electromagnetic interference generated by electric traction systems and achieving automated monitoring. A key difficulty lies in the varying initial widths of expansion joints among different box girders，necessitating equal-precision measurement for comparative analysis of their changes. This study proposed an optical low-coherence expansion joint displacement sensor for high-speed railway box girders，which was subjected to vibration resistance testing under laboratory conditions. The sensor’s performance under common low-frequency vibration scenarios was verified，followed by its application in monitoring the expansion joints of simply-supported box girders on the Beijing-Tianjin Intercity High-speed Railway. Results show that，influenced by sunlight and temperature，the difference in displacement between the top and bottom surfaces of expansion joints can reach 150 μm，with the sensor demonstrating a long-term monitoring accuracy of 50 μm. These findings provide valuable reference for the implementation of automated monitoring of expansion joints in high-speed railway box girders.

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备注/Memo

备注/Memo:
收稿日期：2022-09-13
作者简介：陈基松（1992-），男，硕士研究生。
基金项目：中国铁路设计集团有限公司校企合作项目（2020YY340517）
更新日期/Last Update: 2024-06-30