Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture
Joint Authors
Xu, Nuwen
Dai, Feng
Sha, Chun
Lei, Yingcheng
Li, Biao
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-07-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
To study the generation mechanism and failure mode of cracks in mass concrete, microseismic monitoring is conducted on the fracture processes of the three-point bending roller compacted concrete (RCC) beam of Guanyinyan hydropower station.
The spectrum characteristics of microseismic signals in different deformation and failure stages of the concrete beam are analyzed, and the identification method of the fracture stages and crack propagation precursors of concrete beam is established.
Meanwhile, the Realistic Failure Process Analysis code (RFPA) is adopted to simulate and analyze the entire failure processes of concrete beam from its cracks initiation, development, propagation, and coalescence, until macroscopic fractures formation subjected to three-point bending test.
The relation curve of the load, loaded displacement, and acoustic emission (AE) of concrete beam in the three-point bending test is also obtained.
It is found that the failure characteristics of concrete beam obtained from numerical experiments agree well with the field physical test results.
The heterogeneity of concrete is the major cause of zigzag propagation paths of beam cracks subjected to three-point bending tests.
The results lay foundation for further exploring the formation mechanism of dam concrete cracks of Guanyinyan hydropower station.
American Psychological Association (APA)
Xu, Nuwen& Dai, Feng& Sha, Chun& Lei, Yingcheng& Li, Biao. 2015. Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture. Journal of Sensors،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1070244
Modern Language Association (MLA)
Xu, Nuwen…[et al.]. Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture. Journal of Sensors No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1070244
American Medical Association (AMA)
Xu, Nuwen& Dai, Feng& Sha, Chun& Lei, Yingcheng& Li, Biao. Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture. Journal of Sensors. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1070244
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1070244