混凝土内部异常震波层析成像试验研究

Experimental Study on Seismic Wave Computerized Tomography of Abnormity inside Concrete Structures

利用震波CT技术可以检测混凝土结构内部异常体大小、形态、空间分布。地震波穿透混凝土介质时,在凝固性好、强度高的区域呈现高波速,在夹泥、空洞等严重缺陷区域呈现低波速的特征。该文通过构建混凝土正演和物理模型,对比分析了震波CT测试技术的有效性及其分辨能力,为现场测试应用提供了参考。

Using of seismic wave CT technology can detect the size, shape and Spatial distribution of internal anomalies of concrete structure. With seismic waves penetrating the concrete medium, high-velocity characteristics are showed in the region of good solidification and high strength;low-velocity characteristics are showed in the region of existing mud, voids and other serious defects. The forward model and physical model of eonerete are built in this paper. The effectiveness and the distinguish ability of seismic wave CT testing technology are analyzed, and it provides the references for field test applications.