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Subgrade Frost Heaving Monitoring for High-speed Railway in Alpine Regions

被引：0
|
作者：
Zhu L. [1 ,2 ]
Wen Z. [1 ]
Wu C. [1 ]
Wang Y. [1 ,2 ]
机构：
[1] School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing
[2] Key Laboratory of Vehicle Advanced Manufacturing, Ministry of Education, Beijing Jiaotong University, Beijing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2019年 / 41卷 / 01期
关键词：
Illumination compensation; Position sensitive detector(PSD); Subgrade frost heaving; Temperature characteristics;
D O I：
10.3969/j.issn.1001-8360.2019.01.014
中图分类号：
学科分类号：
摘要：
In order to accurately monitor the frost heave of high-speed railway subgrade in alpine region, a remote monitoring system for frost heave of high-speed railway subgrade based on prism reflection principle was proposed. To mitigate the effect of ambient light changes on the detection precision of the system, a background light compensation algorithm was proposed for position sensitive detector(PSD).The contrast experiment shows that the compensation algorithm can improve the measurement accuracy of the system, especially in the case of the strong background light. The system was also optimized to reduce the influence of the changes of ambient temperature on the detection precision. The temperature characteristic test shows that the temperature has a minor influence on the measurement precision when the system is in cold environment. The whole system runs stably and reliably during the three months' winter field monitoring on Harbin-Qiqihaer High-speed Railway. The maximum frost heave value of the roadbed at the measuring points is about 2 mm. © 2019, Department of Journal of the China Railway Society. All right reserved.
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页码：109 / 116
页数：7
相关论文
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