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Title: Comparison of levee underseepage analysis methods using blanket theory and finite element analysis
Authors: Brandon, Thomas L.
Vroman, Noah D.
Corcoran, Maureen K.
Batool, Abeera
Jimenez, Martha
Keywords: Blanket theory
United States--Army Corps of Engineers
Finite element analysis
Seepage--Mathematical models
Finite element method--Computer programs
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Geotechnical and Structures Laboratory (U.S.)) ; no. ERDC/GSL TR-18-24
Abstract: This report provides a comparison of levee underseepage analysis methods using Blanket Theory and finite element analysis. Blanket Theory is a set of closed-form solutions for computing seepage pressures and flows beneath levees. These solutions were introduced in a U.S. Army Corps of Engineers (USACE) 1956 technical manual and are also shown in the 2000 version of USACE Engineer Manual, “Design and Construction of Levees.” Derivations of Blanket Theory, which have not been previously documented, are thoroughly documented in this report. These derivations include the standard seven Blanket Theory cases and provide the key assumptions necessary for the accuracy of the solution; they highlight the errors in the Blanket Theory equations shown in the 2000 USACE engineering manual. An additional Blanket Theory case, which include a cutoff wall located beneath the levee, is derived in this report. Subsequently, an evaluation of the Blanket Theory solutions is made using finite element analysis. This evaluation included the standard seven Blanket Theory cases, the additional Blanket Theory case, and layered strata. This evaluation demonstrates where the analysis methods did or did not produce similar results. The finite element analysis method is further evaluated comparing different finite element analysis software. Finally, general guidelines for performing levee underseepage finite element analysis are provided in this report.
Description: Technical Report
Gov't Doc #: ERDC/GSL TR-18-24
Appears in Collections:Technical Report

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