弹性波CT技术在桥梁混凝土结构无损检测中的应用

The Application of Elastic Wave CT Technology in Nondestructive Examination of Bridge Concrete Structure

在总结现有混凝土结构无损检测方法的基础上,探讨了弹性波CT的技术特点和优势,提出了弹性波CT检测混凝土质量的评价方法。通过工程实例,证明了该项技术检测精度满足工程需要,检测结果分辨率高、图像直观,其在桥梁混凝土结构无损检测中有较好的应用前景。但由于波速受影响因素众多,在混凝土构件强度的判定时需根据现场情况综合分析。

On the basis of summarizing the existing nondestructive testing methods for concrete structures, the technical characteristics and advantages of elastic wave CT are discussed, and the evaluation method of elastic wave CT testing concrete quality is put forward. The engineering example proves that the testing precision of this technology meets the engineering requirement, and the testing result has high resolution and intuitive image. However, because the wave velocity is affected by many factors, the strength of concrete members should be judged according to the site comprehensive analysis.