New method of monitoring tunnel feet-lock pipe (TFP) mechanics using fiber bragg grating (FBG)

doi:10.1520/JTE20170364

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	New method of monitoring tunnel feet-lock pipe (TFP) mechanics using fiber bragg grating (FBG)
	Luo, Yanbin 2; Diao, Pengsheng 3; Chen, Jianxun 2; Li, Dong 1; Guo, Yalong 2; Qiao, Xiong 4
刊名	Journal of Testing and Evaluation
	2020-07-01
卷号	48 期号:4
关键词	Electromagnetic fields Errors Etching Locks (fasteners) Mechanics Stability Tunnels Design and construction Direct resistance method Effective measures Experimental scheme Long term monitoring Mechanical analysis Structural stabilities Tunnel engineering
ISSN号	00903973
DOI	10.1520/JTE20170364
英文摘要	Tunnel feet-lock pipe (TFP) is one of the most effective measures used to control tunnel settlement and is widely used in tunneling with soft ground or weak rock mass. Mechanical analysis is an important method to optimize TFP design and construction, and its results can be used to evaluate the structural stability of the tunnel. Although the traditional direct resistance method (DRM) can measure the mechanics of TFP, it is not suitable for harsh environments (humid environments, chemical etching, and electromagnetic field noise) or long-term monitoring. In this article, a method to measure the mechanics of TFP by using Fiber Bragg grating (FBG) is proposed. The strain and bending of TFP monitored by FBG is used to analyze the mechanics of TFP. In order to verify the feasibility and accuracy of the FBG method to measure the mechanics of TFP, an experimental scheme was designed to compare DRM and theoretical analysis. A supporting device and loading device were developed for the experimental scheme. Compared with the theoretical value, the error of strain and bending measured by FBG was stable within 5 μe, the error of strain measured by DRM was approximately 15 μe or even 20-30 μe, and the error of bending measured by DRM was 10-15 μe or even 25 μe. Therefore, the precision of measuring the mechanics of TFP by using FBG is higher than by using DRM. © 2018 by ASTM International.
语种	英语
出版者	ASTM International
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115738]
专题	土木工程学院
作者单位	1.Power China Road Bridge Group Co., Ltd., B Pedestal, Hai Fu International, 22 Chegongzhuang W. Rd., Haidian District, Beijing; 100084, China; 2.School of Highway, Chang'an University, Middle Section of S., 2nd Ring Rd., Xi'an, Shaanxi Province; 710064, China; 3.China State Construction International Investments (China) Ltd., Lang Shan No. 2 Rd., Nanshan District, Shenzhen; 518000, China; 4.School of Civil Engineering, Lanzhou University of Technology, 287 LangongPing Rd., Qilihe District, Lanzhou, Gansu; 710064, China
推荐引用方式 GB/T 7714	Luo, Yanbin,Diao, Pengsheng,Chen, Jianxun,et al. New method of monitoring tunnel feet-lock pipe (TFP) mechanics using fiber bragg grating (FBG)[J]. Journal of Testing and Evaluation,2020,48(4).
APA	Luo, Yanbin,Diao, Pengsheng,Chen, Jianxun,Li, Dong,Guo, Yalong,&Qiao, Xiong.(2020).New method of monitoring tunnel feet-lock pipe (TFP) mechanics using fiber bragg grating (FBG).Journal of Testing and Evaluation,48(4).
MLA	Luo, Yanbin,et al."New method of monitoring tunnel feet-lock pipe (TFP) mechanics using fiber bragg grating (FBG)".Journal of Testing and Evaluation 48.4(2020).