Constitutive Model of Swelling Gypsum Rock
Joint Authors
Liu, Zhiguo
Xu, Chongbang
Gao, Xiaojing
Zhang, Kaishun
Zhao, Fan
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-08
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Swelling of soft rock, such as gypsum rock, is one of the major threats in tunnel engineering, causing structure damages such as floor heave and inward movement of sidewalls during construction and operation.
It is of practical significance to study the swelling mechanical behavior of such rocks by tests.
Swelling strain tests and swelling stress tests were performed by swelling test apparatus to study the variation of swelling strain with time and the swelling stress-strain relationship for gypsum rock samples, respectively.
Three stages of the swelling strain on the time-strain curve of gypsum rock samples were noticed, which are defined as rapid swelling stage, slow swelling stage, and steady stage.
And it was further found that the swelling strain caused in the slow swelling stage is of 76% of the total swelling strain.
A constitutive model is proposed to describe the stress-strain relationship in swelling considering the swelling deformation and swelling pressure.
The proposed model was verified using test data, which shows good agreements in describing the relationship between swelling strain and swelling stress, also in the conditions of maximum swelling strain and maximum swelling stress under lateral restraint situations.
American Psychological Association (APA)
Xu, Chongbang& Gao, Xiaojing& Zhang, Kaishun& Liu, Zhiguo& Zhao, Fan. 2020. Constitutive Model of Swelling Gypsum Rock. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1125039
Modern Language Association (MLA)
Xu, Chongbang…[et al.]. Constitutive Model of Swelling Gypsum Rock. Advances in Civil Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1125039
American Medical Association (AMA)
Xu, Chongbang& Gao, Xiaojing& Zhang, Kaishun& Liu, Zhiguo& Zhao, Fan. Constitutive Model of Swelling Gypsum Rock. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1125039
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125039