MATHEMATICAL AND PHYSICAL MODEL STUDIES OF THE COPELAND CUT TEST ICE BOOM

The objective of this study was to assess the feasibility of predicting, with mathematical and physical models, the behavior of ice booms and their retained ice field in the Saint Lawrence River when these booms are modified to permit transiting by ships. The study reviews available mathematical theories on the subject and applies a finite element method of analysis to predict loads on a prototype test ice boom installed in the Copeland Cut of the St. Lawrence River. A complete and consistent set of hydro-mechanical scaling laws are developed for undistorted and distorted scale models for ship, ice and ice boom interactions in a river. A set of modeling criteria are also developed and applied to the design of two scale models of the Copeland Cut Test Ice Boom. Results from these two models (one undistorted with a scale of 1:60, and the other distorted with a horizontal scale of 1:60 and vertical scale of 1:24) are compared with prototype data. It is concluded that mathematical theories alone cannot presently predict all information needed in the design of navigable ice control structures but that properly designed physical models should be able to predict almost all of the needed design data.

• Corporate Authors:

  Arctec, Incorporated

  9104 Red Branch Road
  Columbia, MD  United States  21045

  Saint Lawrence Seaway Development Corporation

  1200 New Jersey Avenue, S.E.
  Suite W32-300
  Washington, DC  United States  20590
• Authors:
  • Lewis, J W
  • Kotras, T
  • Benze, D L
  • ETZEL, R A
• Publication Date: 1979-7

Media Info

• Pagination: 288 p.

Subject/Index Terms

• TRT Terms: Booms (Lifting equipment); Deicing; Finite element method; Hydraulic structures; Ice; Ice navigation; Ice phenomena; Inland waterways; Loads; Maneuvering; Mathematical models; River ice
• Uncontrolled Terms: Hydraulic models; Ice breakup
• Geographic Terms: Saint Lawrence River
• Old TRIS Terms: Booms equipment; Ice booms; Ice loads; Model testing
• Subject Areas: Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00313214
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SLSDC-281 Final Rpt.
• Contract Numbers: DOT-SL-76-467
• Files: NTIS, TRIS, USDOT
• Created Date: May 7 1980 12:00AM