基于超声纵波法的螺栓连接件轴力测量  

Axial Force Measurement of Bolted Joints Based on Ultrasonic Longitudinal Wave Method

作　　者：谢琳娜 XIE Lin-na(Highway Engineering Consulting Department,Zhejiang Huazhan Engineering Consulting Co.,Ltd,Hangzhou 310000,China)

机构地区：[1]浙江华湛工程咨询有限公司公路工程咨询部,浙江杭州310000

出　　处：《江苏航运职业技术学院学报》2023年第1期35-40,84,共7页Journal of Jiangsu Shipping College

摘　　要：为了解决螺栓连接板件的轴力测量问题,基于超声纵波法的测量公式,通过10.9S级M20高强度螺栓的标定试验,获得了轴力与超声纵波声时差之间的特征关系曲线;基于特征关系曲线,对10组螺栓连接板件上的40颗螺栓进行了轴力实测。结果表明:螺栓连接件的轴力值主要分布在130~155 kN的范围内,小于10.9 S级高强螺栓155 kN的设计预拉力值。通过螺栓轴力检测发现,使用超声纵波测量法可以快速获得连接板上的螺栓轴力,可以为螺栓连接板件的施拧验收工作提供数据支持。In order to solve the problem of axial force measurement of bolted connectors and based on the measurement formula of ultrasonic longitudinal wave method,the characteristic relationship curve between axial force and ultrasonic longitudinal wave sound time difference was obtained through the calibration test of 10.9S grade M20 high-strength bolts.Based on the characteristic relationship curve,the axial force of 40 bolts on 10 groups of bolted connectors was measured.The results showed that the axial force values of the bolted connectors were mainly distributed in the range of 130~155 kN,which was less than the designed pretension value of 155 kN for 10.9 S grade high-strength bolts.It is found by bold axial force detection that the bolt axial force on the connection plate can be obtained quickly by using ultrasonic longitudinal wave measurement method,which can provide data support for the acceptance of the bolted connection plate.

关 键 词：高强度螺栓连接板 超声纵波测量原理 标定试验 轴力实测 

分 类 号：TH131.3[机械工程—机械制造及自动化]