Chapter
Nov 1, 2016
The Influence of Random Confining Layer Thickness on Levee Seepage Analysis
Authors: Bryant A. Robbins, M.ASCE [email protected], D. V. Griffiths, F.ASCE [email protected], and Gordon A. Fenton, M.ASCE [email protected]Author Affiliations
Publication: Rocky Mountain Geo-Conference 2016
Abstract
Seepage analyses are routinely performed as part of levee analyses. While finite-element analysis is being used with increasing frequency, semi-analytical solutions such as “blanket theory” are still commonly used, especially for simplified reliability analysis in conjunction with first-order methods. Unfortunately, the simplified approaches do not properly account for the spatial variability inherent in geologic materials when considering the blanket thickness. In this paper, random field theory is used to determine the influence of a confining layer of random thickness on levee under seepage and exit gradients. Results indicate that neglecting spatial variation in blanket thickness does not cause significant error in computed exit gradients and flow quantities obtained from simple reliability analysis using blanket theory.
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Information
Published In
Rocky Mountain Geo-Conference 2016
Pages: 89 - 102
Copyright
© 2016 American Society of Civil Engineers.
History
Published online: Nov 1, 2016
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ASCE Technical Topics:
- Analysis (by type)
- Computer analysis
- Engineering fundamentals
- Errors (statistics)
- Finite element method
- Geology
- Geomechanics
- Geometry
- Geotechnical engineering
- Hydraulic engineering
- Hydraulic structures
- Levees and dikes
- Material mechanics
- Material properties
- Materials engineering
- Mathematics
- Methodology (by type)
- Numerical methods
- Seepage
- Soil mechanics
- Soil properties
- Spatial variability
- Statistics
- Thickness
- Water and water resources
Authors
Affiliations
P.E.
Research Engineer, U.S. Army Corps of Engineers, 12596 W. Bayaud Ave., Lakewood, CO 80228. E-mail: [email protected]
P.E.
Professor, Dept. of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401. E-mail: [email protected]
Professor, Dept. of Engineering Mathematics, Dalhousie Univ., 6299 South St., Halifax, NS, Canada B3H 4R2. E-mail: [email protected]
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