Cellular Cofferdam for Trident Drydock: Performance

by Max D. Sorota, (F.ASCE), Sr. Vice Pres.; Fay, Spofford & Thorndike, Inc., Boston, Mass.,
Mark X. Haley, (A.M.ASCE), Sr. Engr.; Haley & Aldrich, Inc., Cambridge, Mass.,
Edward B. Kinner, (M.ASCE), Sr. Vice Pres.; Haley & Aldrich, Inc., Cambridge, Mass.,

Serial Information: Journal of the Geotechnical Engineering Division, 1981, Vol. 107, Issue 12, Pg. 1657-1676

Document Type: Journal Paper


The construction and performance of a permanent steel sheet pile cellular cofferdam designed to accommodate a maximum water depth of 79 ft (24 m) is described. The cofferdam is among the first to be constructed in the United States which, because of expected interlock tensions, required the use of high strength steel sheet piles and extruded wye connections. Vibratory probe compaction of the cell and connecting are fill was performed to prohibit earthquake liquefaction, to minimize settlements and to obtain necessary weight for cofferdam stability. A pumped cell fill dewatering system was used to limit interlock tensions during and following cofferdam basin unwatering.

Subject Headings: Steel piles | Cofferdams | Steel construction | Sheet piles | High-strength steel | Fills | Ultimate strength | Tension members | United States

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