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Overdredging at Existing Gravity Structure

by Jorgen V. Jensen, Swan Wooster Engineering Co, Vancouver, BC, Canada,
Albert E. L. Siemons, Swan Wooster Engineering Co, Vancouver, BC, Canada,



Document Type: Proceeding Paper

Part of: Ports '86

Abstract:

Pacific Elevators Ltd. decided to upgrade Berth No. 2 to handle ships up to 70,000 DWT. The difficulty was to maintain the support of the cribs after dredging of the berth to minus 45 ft. The grouting solution was adopted because of low cost and because the work could be done with minimum interference to the daily terminal operation, which was not to be interrupted before the actual dredging work would start. This paper describes how the support of the wharf gravity structures was maintained in this simple, effective and cost efficient way. It outlines the progress of the work, the changes made during the work, and finally recommends general improvements to the method if used in similar applications in the future.

Subject Headings: Ports and harbors | Grouting | Harbor facilities | Dredging | Berths | Structural stability | Soil stabilization

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