基于光纤光栅传感技术的锚杆受力方向及挠度研究
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摘要
为了研究锚杆在锚固后其切向变形,通过光纤光栅传感器在锚杆受力后的波长变化情况得到其应变值;运用数学差分法及三角函数运算,求出锚杆受力的角度及挠度值,得到锚杆所受切向载荷的情况,为锚杆锚固后不能直接测量其受力状况提供了新的思路。
To study the tangential deformation of anchor bolt after anchoring, the strain value is obtained by the wavelength change of fiber bragg grating sensor after anchoring. The stress angle and deflection of anchor bolt are calculated by mathematical difference method and trigonometric function operation. In this paper, the tangential load of the bolt is obtained by a new method,which provides a new idea for the bolt not to be directly measured after anchoring.
To study the tangential deformation of anchor bolt after anchoring, the strain value is obtained by the wavelength change of fiber bragg grating sensor after anchoring. The stress angle and deflection of anchor bolt are calculated by mathematical difference method and trigonometric function operation. In this paper, the tangential load of the bolt is obtained by a new method,which provides a new idea for the bolt not to be directly measured after anchoring.
引文
[1]黄飞.我国煤巷支护中锚杆技术的现状及发展趋势[J].科技创新导报,2010(19):75-77.
[2]张昌锁,李义,赵阳升,等.锚杆锚固质量无损检测中的激发波研究[J].岩石力学与工程学报,2006(6):1240-1245.
[3]李义,王成.应力反射波法检测锚杆锚固质量的实验研究[J].煤炭学报,2000(2):160-164.
[4]弥旭锋.基于光纤Bragg光栅传感技术的锚杆应力分布规律研究[D].西安:西安科技大学,2013.
[5]梁敏富,方新秋,薛广哲,等.FBG锚杆测力计研制及现场试验[J].采矿与安全工程学报,2017,34(3):549.
[6]张桂花,柴敬,李毅,等.基于光纤光栅拉拔实验锚杆应力分布研究[J].采矿与安全工程学报,2014,31(4):635-638.
[7]林传年,刘泉声,高玮,等.光纤传感技术在锚杆轴力监测中的应用[J].岩土力学,2008(11):3161-3164.
[8]刘中熙.基于光纤光栅技术的锚杆受力状态监测实验研究[D].太原:太原理工大学,2018.
[9]Friebele P.Fibre Bragg grating strain sensors:present and future applications in smart structures[J].Optics and Photonics News,1998(9):33-37.
[10]K O Hill,G Meltz.Fiber Bragg Grating Technology Fundamentals and Overview[J].Journal of Lightwave Technology,1997,15(8):1263-1274.
[2]张昌锁,李义,赵阳升,等.锚杆锚固质量无损检测中的激发波研究[J].岩石力学与工程学报,2006(6):1240-1245.
[3]李义,王成.应力反射波法检测锚杆锚固质量的实验研究[J].煤炭学报,2000(2):160-164.
[4]弥旭锋.基于光纤Bragg光栅传感技术的锚杆应力分布规律研究[D].西安:西安科技大学,2013.
[5]梁敏富,方新秋,薛广哲,等.FBG锚杆测力计研制及现场试验[J].采矿与安全工程学报,2017,34(3):549.
[6]张桂花,柴敬,李毅,等.基于光纤光栅拉拔实验锚杆应力分布研究[J].采矿与安全工程学报,2014,31(4):635-638.
[7]林传年,刘泉声,高玮,等.光纤传感技术在锚杆轴力监测中的应用[J].岩土力学,2008(11):3161-3164.
[8]刘中熙.基于光纤光栅技术的锚杆受力状态监测实验研究[D].太原:太原理工大学,2018.
[9]Friebele P.Fibre Bragg grating strain sensors:present and future applications in smart structures[J].Optics and Photonics News,1998(9):33-37.
[10]K O Hill,G Meltz.Fiber Bragg Grating Technology Fundamentals and Overview[J].Journal of Lightwave Technology,1997,15(8):1263-1274.