SOIL NAILING IN FRANCE: RESEARCH AND PRACTICE
In 1986 a 4-year, $4 million research project named CLOUTERRE was initiated in France by the French Minister of Transport. The main objective was to develop recommendations on soil nailing for temporary and permanent nailed soil walls in excavation, with special emphasis on safety and durability. The results and the subsequent recommendations for seven selected important topics are presented. The behavior of a nailed soil wall during construction, in service, and near failure was studied on three full-scale experimental walls pushed to failure according to three modes of failure. A design method based on Schlosser's multicriterion is recommended to account for all possible modes of failure. The classical definition of the global factor of safety is abandoned, and a new procedure using partial safety factors and weighing factors is recommended. A new method is proposed to design the facing thickness as a function of the nail spacings. More than 450 in situ pullout tests were collected to create a unique data base allowing correlations between the nail and soil types and the soil-nail interface frictional resistance. Detailed recommendations are developed to calculate the extra thickness of steel required in permanent nailed soil structures depending on the characteristics of the soil. Limitations of soil nailing are clearly defined for different situations. CLOUTERRE recommendations are a major contribution to the status of knowledge on soil nailing in excavation. They will allow the increasing use of soil nailing for temporary and permanent structures.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/030905169X
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1330, Behavior of Jointed Rock Masses and Reinforced Soil Structures 1991. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- SCHLOSSER, F
- UNTERREINER, P
- Publication Date: 1991
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 72-79
- Monograph Title: Behavior of jointed rock masses and reinforced soil structures, 1991
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Serial:
- Transportation Research Record
- Issue Number: 1330
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Design methods; Durability; Excavation; Failure; Material reinforcement; Pull out test; Recommendations; Safety; Safety factors; Skin resistance; Soil nailing; Soil structure interaction; Specimens; Technology; Thickness
- Uncontrolled Terms: Failure modes
- Geographic Terms: France
- Old TRIS Terms: Full scale specimens; Thickness design
- Subject Areas: Design; Geotechnology; Highways; Research; Safety and Human Factors; I42: Soil Mechanics;
Filing Info
- Accession Number: 00622266
- Record Type: Publication
- ISBN: 030905169X
- Files: TRIS, TRB
- Created Date: May 31 1992 12:00AM