ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

3-D Deformation Analysis of Pile Groups During Wave Loading

by M. Gabr, West Virginia Univ, Morgantown, United States,
Per Magne Aas, West Virginia Univ, Morgantown, United States,
J. Wang, West Virginia Univ, Morgantown, United States,



Document Type: Proceeding Paper

Part of: Design and Performance of Deep Foundations: Piles and Piers in Soil and Soft Rock

Abstract:

Deformation predictions of pile group supporting one leg of Magnus platform were conducted using the 3-D nonlinear computer program SPLICE (Structure/Pile/Soil Interaction Analysis) and the 3-D linear computer program CPGA. These programs were developed by the Norwegian Geotechnical Institute and the U.S. Army Corps of Engineers, respectively. The analysis results were compared to field measurements recorded during a wave storm. Using measured load combinations, axial displacement measured in the field was accurately predicted by both models. The measured group rotation was also reasonably predicted while the measured lateral displacement was underestimated. This underestimation may be due to the assumption that soil stiffness (E) was constant with depth which simulated a relatively stiff top layer that did not exist in the field. Assuming a linear variation of E with depth, better estimates of the lateral displacement and rotation using both SPLICE and CPGA were achieved.

Subject Headings: Offshore structures | Three-dimensional analysis | Computer analysis | Axial loads | Soil-pile interaction | Underwater structures | Underwater foundations

Services: Buy this book/Buy this article

 

Return to search