Stone Columns for Underwater Wall Stability U.S. Coast Guard, Seattle, Washington

摘要

This paper highlights the first use of stone columns for marine ground improvements in the Puget Sound of Washington State, and the application of these ground improvement measures for underwater wall stability and overall structural stability. Design, construction, and environmental features are described, emphasizing the challenges and issues surrounding the installation of underwater stone columns and the dredging that occurred before and after the wall installation. Challenges and complications associated with creosote in the soils found during construction and phasing of dredging in front of the wall of clean and contaminated materials are also discussed.