Failure of Fiber-Reinforced Granular Soils

Short fibers have been tried in the past few years as a soil-improvement admixture (reinforcement), yet no failure criteria for fiber-reinforced soils, consistent with numerical methods for solving boundary-value problems, are available. An attempt at deriving the limit condition for a fiber-reinfor...

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Bibliographic Details
Published inJournal of geotechnical engineering Vol. 122; no. 3; pp. 226 - 234
Main Authors Michalowski, Radoslaw L, Zhao, Aigen
Format Journal Article
LanguageEnglish
Published New York, NY American Society of Civil Engineers 01.03.1996
Subjects
Applied sciences
Buildings. Public works
Exact sciences and technology
Geotechnics
Soil mechanics. Rocks mechanics
TECHNICAL PAPERS
Fiber reinforced materials
Granular soil
Stress strain relation
Homogenization
Laboratory test
Mathematical models
Experimental study
Soil mechanics
Reinforced soil
Strength
Defects
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Summary:Short fibers have been tried in the past few years as a soil-improvement admixture (reinforcement), yet no failure criteria for fiber-reinforced soils, consistent with numerical methods for solving boundary-value problems, are available. An attempt at deriving the limit condition for a fiber-reinforced granular soil is presented. An energy-based homogenization scheme is used to arrive at the macroscopic failure stress of the fibrous granular composite. A piecewise closed-form failure criterion is derived. The internal friction angle is used to quantify the strength of the granular matrix, and the fibers are characterized by volumetric concentration, aspect ratio, yield point, and the fiber-soil interface friction angle. Laboratory tests on specimens with low fiber content indicate a good agreement of the model predictions with the actual test results.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0733-9410
1944-8368
DOI:10.1061/(ASCE)0733-9410(1996)122:3(226)