CONSOLIDATION OF SUBGRADES BY MEANS OF SMALL PILES
CONSOLIDATION D'UN SOL DE FOUNDATION PARPICOTS
The author describes the use of mini-piles on the construction site of the new clichy bridge with a view to improving the geotechnical characteristics of embankments and compressible alluvial material prior to the construction of a retaining wall. The technique consists in sinking in the soil by means of vibratory driving a chuck shaped like a truncated cone; after the chuck has been removed, the hole is filled with lean concrete, then the chuck is driven in again to ensure the compaction of the concrete and the expansion of the small pile. Results are given of pressiometer tests carried out before and after the installation of the minipiles, and the increase in the density of the soil and the bearing capacity of the latter are discussed. Attention is drawn to the need for further loading tests and in-situ measurements of soil density. /TRRL/
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Corporate Authors:
Laboratoire Central des Ponts et Chausees (LCPC)
Boulevard Lefebvre 58
Paris Cedex 15, France F-75732 -
Authors:
- Gigan, J P
- Publication Date: 1975-7-8
Language
- French
Media Info
- Features: Figures; Photos; References;
- Pagination: p. 12-16
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Serial:
- Bulletin de Liaison des Lab des Ponts et Chaussees
- Issue Number: 78
- Publisher: Laboratoire Central des Ponts et Chausees (LCPC)
Subject/Index Terms
- TRT Terms: Alluvium; Bearing capacity; Cast in place concrete; Compaction; Compressibility; Consolidations; Density; Embankments; Geotechnical engineering; Lean concrete; Pile driving; Retaining walls; Soil densification; Soils; Support piles; Vibratory equipment
- Geographic Terms: France
- Old TRIS Terms: Chucks
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00149904
- Record Type: Publication
- Source Agency: Central Laboratory of Bridges & Highways, France
- Report/Paper Numbers: Analytic
- Files: ITRD, TRIS
- Created Date: Jun 17 1977 12:00AM