Journal Published Online: 12 January 2005
Volume 28, Issue 2

Centrifuge Modeling of Rigid Square Footings on Weak Jointed Rock



Four series of centrifuge tests were performed using a model rock made from a mixture of sand, bentonite, cement, and water. Tests were conducted to determine the effect of horizontal and vertical discontinuities in the bedrock on the load settlement response of a rigid, shallow footing. A prototype footing, measuring 1 m × 1 m, was simulated in the study. Horizontal and vertical joints, in-filled with compressible material, were simulated by incorporating thin seams of styrofoam. Results from this study are compared to the commonly used methods used to predict the ultimate bearing capacity of footings on jointed rock mass. It is concluded that the existing methods to predict the bearing capacity are conservative for the range of design parameters studied in this research.

Author Information

Dunham, L
University of New Brunswick, Fredericton, N.B.
Valsangkar, AJ
University of New Brunswick, Fredericton, N.B.
Schriver, AB
University of New Brunswick, Fredericton, N.B.
Pages: 11
Price: $25.00
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Stock #: GTJ11960
ISSN: 0149-6115
DOI: 10.1520/GTJ11960