摘要
超声检测是混凝土无损检测技术中的一个重要方法,当预应力管道中存在注浆不密实的区域时,可以根据混凝土中超声波的传播速度、频率、波形、振幅等参数,进行缺陷的定性识别;然后再利用测量数据进行合成孔径聚焦成像(SAFT),对缺陷的位置及大小进行定量判断。
Ultrasonic testing is an important method of concrete nondestructive testing technology. When the not dense region is presented in the pre-stressed pipes, the defects could be qualitatively iden- tified based on the parameters such as the propagation of the velocity, frequency, waveform, amplitude and so on. Using the synthetic focus technology to get the images of the measured datas, and then the lo- cation and the size of the defects could be quantitatively determined.
出处
《公路工程》
北大核心
2012年第5期168-171,共4页
Highway Engineering
关键词
桥梁
预应力管道
注浆缺陷
超声波
合成聚焦成像
bridge
pre-stressed tendon ducts
grouting faults
Ultrasonic
synthetic focus tech-nology
