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介绍了国内外混凝土梁无损检测技术的发展及应用现状。近年来发展起来的混凝土梁无损检测新技术主要可以分为三类 :一类是以应力波理论为基础的方法如冲击回波法、表面波频谱分析法、声发射技术以及超声脉冲法等 ;一类是以探地雷达为代表的利用电磁波的技术 ;另外一类是以射线作为探测媒介的方法如红外热像法、计算机断层 X射线扫描技术等。实践表明 ,这些技术对提高混凝土梁无损检测的精度与效率具有重要意义
The development and application status of nondestructive testing technology of concrete beams at home and abroad are introduced. In recent years, the developed nondestructive testing of concrete beams can be divided into three categories: one is based on stress wave theory such as impact echo method, surface wave spectrum analysis method, acoustic emission technique and ultrasonic pulse method; One is the use of ground penetrating radar as the representative of the use of electromagnetic wave technology; the other is based on the radiation as the detection medium methods such as infrared thermography, computed tomography X-ray scanning technology. Practice shows that these techniques are of great significance to improve the accuracy and efficiency of nondestructive testing of concrete beams