利用光纤光栅测量锚索拉应力的研究

Q4 Physics and Astronomy

光学技术 Pub Date : 2014-01-01 DOI:10.3788/GXJS20144002.0160

庄君刚 Zhuang Jun-gang, 赵振刚 Zhao Zhenggang, 李英娜 Li Yingna, 谢涛 Xie Tao, 李川 Li Chuan

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引用次数: 0

摘要

锚索通常在高拉应力状态下工作，边坡的安全稳定关系到锚索的健康与否。为了实时反映锚索的拉应力状态，将光纤布拉格光栅安装在锚索单根导线的表面。锚索在力的作用下会发生变形，使光纤布拉格光栅的中心波长发生位移。拉伸应力试验结果表明，拉伸应力敏感性为19.9pm/kN，线性度为1.02%FS。通过测量光纤光栅的中心波长，可以在线监测锚索所受的拉应力。

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Tensile stress measurement reasearch of anchor cable by using optical fiber Bragg grating

Anchor cable usually works in high tensile stress state,the security and stability of slope are related to the health of anchor cable.In order to reflect the real-time tensile stress state of the anchor cable,the optical fiber Bragg grating is installed on the surface of a single wire of the anchor cable.The anchor cable will deform under the action of forces,which makes the center wavelength of the optical fiber Bragg grating shift.Tensile stress test shows that the tensile stress sensitivity is 19.9pm/kN,the linearity is 1.02%FS.The tensile stress which is applied in the anchor cable can be online monitoring by measuring the center wavelength of the optical fiber Bragg grating.

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来源期刊

光学技术 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

0.60

自引率

0.00%

发文量

6699

期刊介绍： The predecessor of Optical Technology was Optical Technology, which was founded in 1975. At that time, the Fifth Ministry of Machine Building entrusted the School of Optoelectronics of Beijing Institute of Technology to publish the journal, and it was officially approved by the State Administration of Press, Publication, Radio, Film and Television for external distribution. From 1975 to 1979, the magazine was named Optical Technology, a quarterly with 4 issues per year; from 1980 to the present, the magazine is named Optical Technology, a bimonthly with 6 issues per year, published on the 20th of odd months. The publication policy is: to serve the national economic construction, implement the development of the national economy, serve production and scientific research, and implement the publication policy of "letting a hundred flowers bloom and a hundred schools of thought contend".