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A case history is presented describing the use of vibratory deep compaction of underwater fill placed behind an anchored steel sheet pile bulkhead. The project included extensive testing to evaluate a variety of compaction equipment, procedures and backfill materials. Quality control tests, including static cone penetration tests, standard penetration tests, and settlement measurements were performed to verify compliance with specified compaction criteria and to assess the impact of deep compaction on the bulkhead structure. The successful completion of this project illustrates the effectiveness of vibratory deep compaction for marine applications.
bulkheads, deep compaction, field tests, underwater fill, vibroflotation
Supervising Geotechnical Engineer, Parsons Brinckerhoff Quade & Douglas, Inc., New York, N.Y.