期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2020
卷号：510
期号：5
页码：1-5
DOI：10.1088/1755-1315/510/5/052090
语种：English
出版社：IOP Publishing
摘要：Due to construction problems, grout defects always exist in precast structure with rebars spliced by sleeves. However, research on grout defects detection faces great challenges owing to the complexity of the problem. This study presents a nondestructive grout defects detection method based on wavelet packet analysis. First, experiment is carried out on two precast shell walls, then, acceleration responses are analyzed, and defects detection indexes ERVD and ERVDs are proposed. The results show that ERVDs is more sensitive to the grout defects than ERVD, and can be used as a good defect detection index in prefabricated shear wall.
