Reduction of Groundwater Buoyancy on the Basement in Weak-PermeableImpervious Foundations
Joint Authors
Zhou, Jikai
Lin, Chenghuan
Chen, Chen
Zhao, Xiyao
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-11-29
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
At present, groundwater buoyancy is directly calculated by Archimedes’ principle for the antifloating design of underground structures.
However, this method may not be applicable to weak-permeable/impervious soils, e.g., clayey foundations, because there is a significant difference between the groundwater buoyancy obtained from field measurements and that calculated by Archimedes’ principle.
In order to determine whether the method of calculating groundwater buoyancy in weak-permeable/impervious soil layers by Archimedes’ principle is reasonable, this paper investigated the groundwater buoyancy on the basement in such foundations through laboratory model tests.
The following factors that may influence the magnitude of groundwater buoyancy were investigated: change of groundwater level, duration of pore water pressure, and buried depth of the basement.
In this study, model test results show that the groundwater buoyancy obtained from measurements is evidently lower than that calculated by Archimedes’ principle.
Reduction extent can be expressed by a “reduction coefficient,” which can be calculated by a fitting formula.
Moreover, experimental groundwater buoyancy increases with the increase in the groundwater level, and it almost does not change with the growth of duration of pore water pressure.
Reduction coefficient ranges between 0.25 and 0.52 depending on different buried depths of the basement.
In general, experimental groundwater buoyancy decreases with the increase in the buried depth of the basement.
American Psychological Association (APA)
Zhou, Jikai& Lin, Chenghuan& Chen, Chen& Zhao, Xiyao. 2019. Reduction of Groundwater Buoyancy on the Basement in Weak-PermeableImpervious Foundations. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1117141
Modern Language Association (MLA)
Zhou, Jikai…[et al.]. Reduction of Groundwater Buoyancy on the Basement in Weak-PermeableImpervious Foundations. Advances in Civil Engineering No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1117141
American Medical Association (AMA)
Zhou, Jikai& Lin, Chenghuan& Chen, Chen& Zhao, Xiyao. Reduction of Groundwater Buoyancy on the Basement in Weak-PermeableImpervious Foundations. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1117141
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1117141