STABILITY ANALYSIS OF FLOATING AND SUBMERGED ICE FLOES

The mathematical model is based on the moment equilibrium of an ice floe resting beneath a uniformly thick ice cover. It is argued that the expression derived for incipient motion of ice block is similar to the relation developed for the stability of prisms resting on the riverbed. The critical thickness, densimetric Froude number for floe transport is compared with that for the submergence of a floe at the upstream end of an ice cover, and with Ashton's streamwise force balance analysis for ice floe stability beneath an ice cover. A nondimensional graph (Froude number versus black thickness-flow depth ratio) is presented to summarize the results. The analysis presented herein indicates that fragmented ice covers thicken generally by internal collapse rather than by transport of floes beneath the floating cover. /Author/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Uzuner, M S
• Publication Date: 1977-7

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 713-722
• Serial:
  • Journal of the Hydraulics Division
  • Volume: 103
  • Issue Number: HY7
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Collapse; Floating structures; Flow; Froude number; Ice; Mathematical models; Prisms; Stability (Mechanics); Thickness
• Old TRIS Terms: Submerging
• Subject Areas: Bridges and other structures; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00165359
• Record Type: Publication
• Report/Paper Numbers: ASCE 13041 Proceeding
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM