Coupling Effect of Creep Deformation and Prestress Loss of Anchored Jointed Rock
Joint Authors
Song, Yang
Wang, Heping
Li, Yongqi
Zhu, Bairu
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-10
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
To explore the variation behaviour of anchor jointed rock subject to high in situ stress states, a coupling effect calculation model based on stress equality was established based on the original rheological model of rock by combining element combination theory and experiment, and the model was verified.
The coupling effect between rock mass creep and bolt prestress loss is established by setting the deterioration function of bolt prestress loss.
The uniaxial creep test is performed on specimens with different joint angles, and the results show that the prestress loss time in anchor rods decreases linearly with increasing stress level.
With increasing stress level, the time of prestress loss decreases linearly with the increase in stress level.
With increasing axial load, the deformation caused by the transverse expansion stress of the specimen can offset the compression deformation of the prestressed anchor rod.
The relationship between prestress loss in anchors and creep of rock is solved theoretically, and the stability criterion for anchor jointed rock is proposed.
The results of this study provide a scientific reference for anchor design of deep jointed rock mass.
American Psychological Association (APA)
Zhu, Bairu& Song, Yang& Wang, Heping& Li, Yongqi. 2020. Coupling Effect of Creep Deformation and Prestress Loss of Anchored Jointed Rock. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1124010
Modern Language Association (MLA)
Zhu, Bairu…[et al.]. Coupling Effect of Creep Deformation and Prestress Loss of Anchored Jointed Rock. Advances in Civil Engineering No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1124010
American Medical Association (AMA)
Zhu, Bairu& Song, Yang& Wang, Heping& Li, Yongqi. Coupling Effect of Creep Deformation and Prestress Loss of Anchored Jointed Rock. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1124010
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124010