[1]曾楚琦,潘自立,莫宏愿,等.基于光纤光栅的高速铁路钢轨损伤识别技术[J].高速铁路技术,2021,12(05):79-83,95.[doi:10.12098/j.issn.1674-8247.2021.05.015]
　ZENG Chuqi,PAN Zili,MO Hongyuan,et al.Technologies of Damage Identification for High-speed Rail based on Fiber Grating[J].HIGH SPEED RAILWAY TECHNOLOGY,2021,12(05):79-83,95.[doi:10.12098/j.issn.1674-8247.2021.05.015]
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基于光纤光栅的高速铁路钢轨损伤识别技术()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
12卷
期数:
2021年05期
页码:
79-83,95
栏目:
出版日期:
2021-10-28

文章信息/Info

Title:
Technologies of Damage Identification for High-speed Rail based on Fiber Grating
文章编号:
1674—8247(2021)05—0079-05
作者:
曾楚琦;  潘自立;  莫宏愿;  何庆;  王启航
1. 西南交通大学, 成都 610031;
2. 中铁二院工程集团有限责任公司, 成都 610031
Author(s):
ZENG Chuqi;  PAN Zili;  MO Hongyuan;  HE Qing;  WANG Qihang
1. Southwest Jiaotong University, Chengdu 610031, China;
2. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China
关键词:
光纤光栅|高速铁路|传感器|钢轨|损伤识别
Keywords:
fiber Bragg grating|high-speed railway|sensor|rail|damage identification
分类号:
U213.4+2
DOI:
10.12098/j.issn.1674-8247.2021.05.015
文献标志码:
A
摘要:
对400 km/h及以上超高速铁路重点地段的钢轨伤损情况展开实时、长期、准确的监测对保障列车安全运行至关重要。传统高速铁路传感仪器因现场部署困难及抗电磁干扰能力差等问题，难以直接运用于400 km/h及以上超高速铁路的高频振动特性检测。目前，光纤光栅（FBG）传感技术因单根光纤可交叉构造光纤光栅网格，能实现多点分布测量，同时其特有的波长解调技术有利于提高传感灵敏度及信号抗干扰性，十分适用于超高速铁路钢轨伤损高频振动特性监测。基于此，本文采用FBG传感器对钢轨伤损监测展开研究。首先，将钢轨进行室内动态加载试验，利用FBG传感器分别采集钢轨正常与伤损处的应变与加速度数据；然后，基于卷积神经网络对采集得到的数据进行钢轨伤损检测训练，并验证了其准确率。结果表明，FBG传感器技术能为400 km/h及以上超高速铁路的钢轨伤损监测及部署提供有效的解决办法。
Abstract:
Real-time, long-term, and accurate monitoring of rail damage in key sections of 400 km/h and above ultra-high-speed railway is critical to ensure the safe operation of trains. Traditional high-speed railway sensing instruments are difficult to be directly applied to the detection of high-frequency vibration characteristics of ultra-high-speed railways of 400 km/h and above due to difficulties in field deployment and poor anti-electromagnetic interference ability. At present, the fiber Bragg grating (FBG) sensing technology can realize multi-point distribution measurement because a single fiber can cross-construct the fiber grating grid. At the same time, its unique wavelength demodulation is conducive to improving the sensing sensitivity and signal anti-interference, which is very suitable for monitoring the high-frequency vibration characteristics of rail damage in ultra-high-speed railways. Based on this, the FBG sensor is used to monitor rail damage in this paper. Firstly, the rail is subjected to an indoor dynamic loading test, and FBG sensors are used to collect strain and acceleration data of normal and damaged parts of the rail respectively. Then, based on the convolution neural network, the rail damage detection training is carried out on the collected data, and its accuracy is verified. The results show that the technology of FBG sensor can provide an effective solution for rail damage monitoring and deployment for 400 km/h and above the ultra-high-speed railway.

备注/Memo

备注/Memo:
作者简介:曾楚琦(1998-),男,硕士研究生。基金项目:中铁二院工程集团有限责任公司科技开发计划（KNSQ202054）引文格式:曾楚琦, 潘自立, 莫宏愿, 等. 基于光纤光栅的高速铁路钢轨损伤识别技术[J]. 高速铁路技术,2021,12(5):79-83,95.ZENG Chuqi, PAN Zili, MO Hongyuan, et al. Technologies of Damage Identification for High-speed Rail based on Fiber Grating[J]. High Speed Railway Technology, 2021, 12(5):79-83,95.
更新日期/Last Update: 2021-10-28