西安理工大学学报2017，Vol.33Issue(4)：450-456,7.DOI:10.19322/j.cnki.issn.1006-4710.2017.04.013
混凝土内裂隙空间位置及填充物FDTD正演分析
FDTD forward modeling of crack and filler in space of concrete
摘要
Abstract
The Ground Penetrating radar (GPR) is often used to detect cracks in concrete.In this paper,the finite difference time domain (FDTD) method is used to simulate the crack of concrete by using the Gprmax 2D and Matlab software.The fractures of different types,sizes and different internal fillings are simulated respectively,with the image changes characteristic analyzed and compared.The results showed that there exists the influence of different types of concrete cracks on the propagation of electromagnetic waves,so it has a different influence on the image;the influence of different fillers on the propagation of electromagnetic waves in the cracks is great,because the water has the strong absorption of electromagnetic wave,and the electromagnetic wave reflection is enhanced,resulting in the multiple influence on deep and more complex image features.The forward modeling can provide some scientific basis and guidance for the interpretation of the actual detection results.关键词
混凝土内裂隙/地质雷达/几何尺寸/填充物/FDTD正演模拟Key words
inside concrete cracks/ground penetrating radar/geometry/filler/FDTD forward modeling分类
建筑与水利引用本文复制引用
赵慧冰,杨杰,程琳,吕高,李亚明..混凝土内裂隙空间位置及填充物FDTD正演分析[J].西安理工大学学报,2017,33(4):450-456,7.基金项目
国家自然科学基金资助项目(51409205) （51409205）
博士后自然科学基金资助项目(2015M572656XB,2017M613175) （2015M572656XB,2017M613175）
水文水资源与水利工程科学国家重点实验室开放研究基金资助项目(2014491011) （2014491011）
陕西省博士后科研资助项目 （）
西安理工大学水利水电学院青年科技创新团队资助项目(2016ZZKT-14) （2016ZZKT-14）
