基于锚杆构件振动响应特征的锚杆轴力无损检测方法

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (13) : 119-126.

论文

王宇赛1，张凯2，肖方园1，曹恒1，张梦宇1

作者信息 +

Non-destructive testing method of anchor rod axial force based on vibration response characteristics of anchor rod components

WANG Yusai1, ZHANG Kai2, XIAO Fangyuan1, CAO Heng1, ZHANG Mengyu1

Author information +

文章历史 +

摘要

锚杆轴力测量对评价围岩稳定性具有重要意义。采用接触力学理论建立了锚杆构件振动频率与锚杆轴力关系模型，开展了锚杆锚固系统振动试验。通过采集螺母和托盘的振动响应信号，对不同受力条件下螺母和托盘的非线性振动特性进行了分析，获得了螺母和托盘振动频率与轴力关系；提出了基于螺母和托盘非线性振动特性的实时轴力无损检测方法。试验结果表明：随着锚杆轴力增加，螺母和托盘振动频率呈非线性增加，螺母频率大于托盘，托盘频率的增长率大于螺母；且二者振动频率增长趋势与轴力大小均为单值映射关系，通过测量螺母和托盘的振动频率可以实现锚杆轴力的无损检测。

Abstract

Measuring the anchor rod's axial force helps determine surrounding rock stability. The relationship model between bolt vibration frequency and axial force was constructed based on contact mechanics theory, and a vibration test of the anchor anchoring system was conducted. By collecting vibration signals from nuts and pallets, bolts and pallets' nonlinear vibration properties under various force conditions were analyzed, and a relationship between their vibration frequencies and axial forces was obtained; a real-time nondestructive testing (NDT) method for axial force was proposed based on the bolts and pallet's nonlinear vibration. The test results show that nut and pallet vibration frequency increases non-linearly with increasing anchor axial force, nut's frequency is not lower than pallet's, and pallet's growth rate is higher than nut; the growth of both vibration frequency and axial force is a single-value mapping connection, and nut and pallet vibration can be used to detect anchor axial force non-destructively.

导出引用

王宇赛1，张凯2，肖方园1，曹恒1，张梦宇1. 基于锚杆构件振动响应特征的锚杆轴力无损检测方法[J]. 振动与冲击, 2023, 42(13): 119-126

WANG Yusai1, ZHANG Kai2, XIAO Fangyuan1, CAO Heng1, ZHANG Mengyu1. Non-destructive testing method of anchor rod axial force based on vibration response characteristics of anchor rod components[J]. Journal of Vibration and Shock, 2023, 42(13): 119-126

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