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Buoyancy Force Acting on Underground Structures considering Seepage of Confined Water
Joint Authors
Mu, Linlong
Zhang, Ji-wen
Cao, Jie
Wang, Le
Li, Jie
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-13
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The antifloating property of underground structures in areas with high underground water levels is a key design aspect.
Evaluating the buoyancy forces acting on underground structures is complicated, particularly in the presence of confined water beneath the structures.
Herein, the effects of the permeability coefficient of layered soil, hydraulic gradient, and embedment depth of the aquiclude on the buoyancy force acting on underground structures are investigated through three model tests: ( 1 ) calibration of the test system, ( 2 ) buoyancy force acting on a structure located in homogeneous soil considering vertical direction seepage, and ( 3 ) buoyancy force acting on a structure located in layered soil considering vertical seepage of confined water.
The results show that the pore pressure along the structure and the buoyancy force acting on the underground structure considering seepage are greater than those obtained under hydrostatic conditions.
The raising ratios of the pore pressure and buoyancy force are equal to the vertical hydraulic gradient when seepage occurs in homogeneous soil.
In the presence of confined water, the raising ratio is significantly greater than the hydraulic gradient.
In the cases studied herein, the raising ratio is approximately twice the hydraulic gradient.
Simplified equations are proposed to calculate the buoyancy force acting on underground structures considering the vertical seepage of confined water.
Finally, a finite element analysis is carried out to verify the conclusions obtained from the model test and the rationality of the proposed equations.
American Psychological Association (APA)
Zhang, Ji-wen& Cao, Jie& Mu, Linlong& Wang, Le& Li, Jie. 2019. Buoyancy Force Acting on Underground Structures considering Seepage of Confined Water. Complexity،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1132751
Modern Language Association (MLA)
Zhang, Ji-wen…[et al.]. Buoyancy Force Acting on Underground Structures considering Seepage of Confined Water. Complexity No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1132751
American Medical Association (AMA)
Zhang, Ji-wen& Cao, Jie& Mu, Linlong& Wang, Le& Li, Jie. Buoyancy Force Acting on Underground Structures considering Seepage of Confined Water. Complexity. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1132751
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1132751