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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 File in Adobe's Portable Document Format (PDF). (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 File in Adobe's Portable Document Format (PDF). (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 File in Adobe's Portable Document Format (PDF). (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 File in Adobe's Portable Document Format (PDF). (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 File in Adobe's Portable Document Format (PDF). (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 File in Adobe's Portable Document Format (PDF). (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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