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Technology
Assessment & Research (TA&R) Program
| Project
Number |
54 |
| Date of Summary |
March 31, 1985 |
| Subject |
Pile Foundation Design for Ocean
Structures |
| Performing Activity |
Naval Civil Engineering Laboratory |
| Principal Investigator |
Mr. Norman D. Albertsen & Mr.
William L. Armstrong |
| Contracting Agency |
Minerals Management Service |
| Estimated Completion |
Completed. |
| Description |
To evaluate the Prevost effective
stress model in undrained soil conditions and to identify the importance of grain
cementation and grain crush ability in preventing the development of lateral pile friction
in coral-lime sands. Experiments were conducted to evaluate the boundary layer of crushed
material developed around the pile during insertion. From this information, determine the
physical mechanism which prevents the development of significant lateral friction against
the pile. |
| Progress |
Complete. Approximately 40
percent of this project's effort was directed to the evaluation of the Prevost Stress
model. The computer program code for `Dynaflow` was obtained and installed on the Naval
Civil Engineering Laboratory computer system. Field pile data was received from University
of California, Los Angeles (UCLA), for drained and undrained soils. This information will
be compared with the data as predicted by the model. The remaining 60 percent of the
effort is directed to problems associated with coralline sands. Certain behavioral
patterns were identified with respect to crush ability, cement content, density, driving
resistance, and pullout resistance. |
| Reports |
AA
 (196 pages) |
Ferritto, J. M., Nakamoto, R. T.,
The Effective Stress Soil Model, Technical Memorandum 51-82-07, Naval Civil Engineering
Laboratory, Port Hueneme, California, September 1982. |
| AB |
Noorawy, I., Friction of
Calcareous Sands, Naval Civil Engineering Laboratory, P.O. No. N62583/81 MR 647, 1982.
(Not available for viewing) |
| AC
(82 pages) |
ERTEC, WESTERN, Inc., An
Investigation of the Effects of Grain Crushing on the Engineering Analysis of Calcareous
Sediments, Naval Civil Engineering Laboratory Report CR 83.020, NCEL, Port Hueneme,
California, March 1983. |
| AD
(174 pages) |
Ferritto, J. M., Nakamoto, R. T.,
Utilization of the Prevost Soil Model for Soil-Structure Problems, Technical Memorandum,
TR No. 51-83-09, Naval Civil Engineering Laboratory, Port Hueneme, California, June 1983. |
| AE
(84 pages) |
The Earth Technology Corporation,
Inc., Conceptual Piling Systems for Use in Calcareous Sediments, Report to Naval
Construction Battalion Center, Port Hueneme, California, July 1983. |
| AF
(94 pages) |
McCarel, S. C., Beard, R. M.,
Laboratory Investigation on Piles in Calcareous Sediments, TN No. N-1714, Naval Civil
Engineering Laboratory, Port Hueneme, California, November 1984. |
| AG
(106 pages) |
Ferritto, J. M., Nakamoto, R. T.,
A Summary of the Prevost Effective Stress Soil Model, TR No. R-913, Naval Civil
Engineering Laboratory, Port Hueneme, California, October 1983. |
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