BEHAVIOR OF CIRCULAR FOOTINGS RESTING ON CONFINED GRANULAR SOIL

This paper presents the results of laboratory model tests on the influence of soil confinement on the behavior of a model footing resting on granular soil. Confining cylinders with different heights and diameters were used to confine the sand. The ultimate bearing load of a circular footing supported on a three dimensional confined sand bed was studied. The studied parameters include the cell height, cell diameter, the depth to the top of the cell, and the embedded depth of footing. Initially, the response of a nonconfined case was determined and compared with that of confined soil. The study results indicate that the bearing load capacity of circular footing can be appreciably increased by soil confinement. It was concluded that such reinforcement resists lateral displacement of soil underneath the footing leading to a significant improvement in the response of the footing. The recommended cell heights, depths, and diameters that give the maximum bearing capacity improvement are presented and discussed.

Availability:
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Corporate Authors:
American Society of Civil Engineers

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Authors:
- El Sawwaf, M
- Nazer, A
Publication Date: 2005-3

Language

English

Media Info

Features: Figures; References; Tables;
Pagination: p. 359-366
Serial:
- Journal of Geotechnical and Geoenvironmental Engineering
- Volume: 131
- Issue Number: 3
- Publisher: American Society of Civil Engineers
- ISSN: 1090-0241
- Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

TRT Terms: Bearing capacity; Cohesionless materials; Footings; Foundation soils; Foundations; Settlement (Structures); Soil compaction
Subject Areas: Geotechnology; Highways; I51: Earthworks and Soil Drainage;

Filing Info

Accession Number: 00988164
Record Type: Publication
Files: TRIS
Created Date: Mar 5 2005 12:00AM