Skip Navigation Minerals Management Service Minerals Management Service MMS Home pagesSearchMMS Topic IndexAbout MMSWhat’s NewOffshore Energy and Minerals Management United States Department of the Interior
TA&R Home PageTA&R International Home PagesTA&R Oil Spill Research HomeTA&R Research Projects HomeTA&R Workshops HomeTA&R Safety Home
Project Number 45
Date of Summary March 31, 1988
Subject Field Study of the Dynamic Response of Single Piles and Pile Groups in Stiff Clay
Performing Activity The University of Houston
Principal Investigator Dr. Michael W. O'Neill
Contracting Agency Federal Highway Administration
Estimated Completion Complete
Description To investigate the behavior of single piles and pile groups under dynamic loading. Tests were conducted on instrumented full scale single piles and pile groups. The project is a cooperative effort with Federal Highway Administration (FHWA), Furgro-Gulf, Inc., the University of Houston, and 9 other sponsors (Arco, Brown and Root, Chevron, Citgo, Exxon, Marathon, Mobil, Raymond International, and Shell). The purpose of the program is to improve the understanding of dynamic pile-soil-pile interaction of single piles and pile groups in a cohesive soil. This is a companion study to Project No. 46.
Progress Complete. Dynamic load tests were run on single and nine-pile clusters by applying quasi-harmonic, vertical and horizontal loads to the pile heads. For single piles, predictions modeled vertical behavior when loads were below those required to produce static failure. Vertical behavior of the cluster could not be reasonably modeled. Horizontal behavior of the single pile was predicted accurately below system resonance. Mathematical models need to be improved in some cases to account for phenomena such as radiation damping.
Reports
AA Vol. 1 (296 pages) File in Adobe's Portable Document Format (PDF) .
AA Vol. 2 (338 pages) File in Adobe's Portable Document Format (PDF) .		 O'Neill, M. W., Blaney, G. W., Muster, G. L., Behavior of Single Pile and Pile Groups in Over-consolidated Clay Under Relatively Low Frequency Loading, Volumes 1 and 2, Furgro-Gulf, Inc., and University of Houston, December 1982.
AB (225 pages) File in Adobe's Portable Document Format (PDF) . O'Neill, M. W., Hawkins, R. A., Mahar L. J., Field Study of Pile Group Action: Final Report (with Appendixes A-c), University of Houston, Houston, Texas, October 1980. (Unclassified)
AC (282 pages) File in Adobe's Portable Document Format (PDF) . Field Study of Pile Group Action: Interim Report, Report No. FHWA/RD-81/001, March 1981.
 

Privacy | Disclaimers | Accessibility | Topic Index | FOIA

Last Updated: 07/23/2008, 08:02 AM