期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 215, 期 -, 页码 812-822出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.04.192
关键词
Masonry structure; Acoustic emission; In-situ uniaxial compression; b-Value; Rate process theory; Damage variable
资金
- National Natural Science Foundation of China [51778587, 51808510]
- Natural Science Foundation of Henan Province of China [162300410255]
- Foundation for University Young Key Teacher by Henan Province [2017GGJS005]
- Outstanding Young Talent Research Fund of Zhengzhou University [1421322059]
- Science and technology planning project of Transportation in Henan Province [2016Y2-2, 2018J3]
Structural health monitoring of masonry structures is an ongoing engineering challenge. An innovative method for establishing a database corresponding to the parameter characteristics of acoustic emission (AE) signals and the damage information was proposed. Therefore, it is necessary and important to study the AE parameter characteristics of masonry structures. In this study, the in-situ uniaxial compression test with the AE monitoring for masonry specimen was performed. The damage evolution of masonry was analyzed qualitatively and quantitatively by the characteristics of several typical AE parameters. Results indicated that the variation characteristics of AE ringing counts and peak frequency were more consistent with the final brittle failure of masonry specimen. Furthermore, the relationship between AE cumulative events and stress level of masonry material was studied. A linear relationship between AE cumulative events and damage variable was established to assess damage degree of masonry quantitatively. (C) 2019 Elsevier Ltd. All rights reserved.
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