Theoretical Development of Forces on Cylindrical Ice Booms
Publication: Journal of Cold Regions Engineering
Volume 15, Issue 3
Abstract
This paper presents generic equations and analyses of a cylindrical pontoon boom's capacity to retain ice. The presentation arises out of actual booms deployed on the St. Lawrence River downstream of Montreal but are valid for any cylindrical ice boom deployment. The boom's retention capacity not only relates to the pontoon's dimensions but also directly relates to the ice sheet's characteristics including thickness and strength. The role of friction and the geometry of the ice at the interface of the pontoon also determine the behavior of the structure and the associated line loads that develop. The analyses of environmental load show that the traditional theory of ice, acting as an aggregate, cannot explain observed values. Instead, this paper suggests that the ice upstream of a boom is a relatively coherent sheet. The internal strength of the ice sheet is compared to the environmental forces and the boom's capacity. These analyses improve understanding of the observations of the St. Lawrence booms made over the last 30 years.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Abdelnour, R., Gong, Y., Comfort, G., and McGoey, L. ( 1993). “Lavaltrie ice boom: Preliminary design for new boom pontoons.” Rep. FTL-4319, Fleet Technology Ltd, Kanata, Ont., Canada.
2.
Abdelnour, R., Nicholson, C., and Gong, Y. ( 1999). “The design, fabrication and deployment of an ice boom to protect two hydroelectric power plants water intakes from ice blockages during winter.” Ice in surface waters, H. T. Shen, ed., Balkema, Rotterdam, The Netherlands, 669–677.
3.
Carter, D. ( 1994a). “Forces sur les estacades.” Rep. Prepared for Transport Canada, Quebec (in French).
4.
Carter, D. ( 1994b). “Poussées des glaces sur les ;afılots artificiels.” Rep. Prepared for Transport Canada, Québec (in French).
5.
Carter, D. ( 1995). “Ice management of Lac Saint-Pierre.” TP 12439E, Rep. Prepared for Transportation Development Centre, Transport Canada, Montreal.
6.
Carter, D., Sodhi, D., Stander, E., Caron, O., and Quach, T. (1998). “Ice thrust in reservoirs.”J. Cold Reg. Engrg., ASCE, 12(4), 169–183.
7.
Cornett, A. M., Frederking, R., Morse, B., and Dumont, S. ( 1998). “Review of ice boom loads in the St. Lawrence river, 1994–1997.” Ice in surface waters, H. T. Shen, ed., Balkema, Rotterdam, The Netherlands, 53–59.
8.
Demuth, M. N., and Prouse, T. D. ( 1990). “A physical model of ice overthrust during the break-up of intact river-ice covers.” Northern hydrology. Selected perspectives, National Hydrology Research Institute, Environment Canada, Saskatoon, Canada, 57–73.
9.
Foltyn, E. P., and Tuthill, A. M. ( 1996). “Design of ice booms.” Cold Regions Tech. Dig., 96-1.
10.
Michel, B. ( 1966). “Thrust exerted by an unconsolidated ice cover on a boom.” Proc., Conf. Ice Pressures against Struct., National Research Council of Canada, Ottawa.
11.
Morse, B. ( 2001). “Dynamics of ice forces on booms.” Cold Regions Sci. and Technol.
12.
Sodhi, D. S., and Adley, M. D. ( 1984). “Experimental determination of buckling loads of cracked ice sheets.” Proc., 3rd Int. Offshore Mech. and Arctic Engrg. Symp. (OMAE'84), Vol. 3, ASME, Fairfield, N.J., 183–186.
13.
Timco, G. W., and Cornett, A. M. ( 1994). “Laboratory tests of ice interaction with the booms in Lac St. Pierre.” Rep. IECE-CEP-TR-003, National Research Council of Canada, Ottawa.
14.
Timco, G. W., and Cornett, A. M. ( 1996). “Laboratory tests of ice interaction with steel booms.” Can. J. Civ. Engrg., Ottawa, 23, 560–566.
15.
Tuthill, A. ( 1995). “Structural ice control: Review of existing methods.” Spec. Rep. 95-18, U.S. Cold Regions Research and Engineering Laboratory, Hanover, N.H.
Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 15 • Issue 3 • September 2001
Pages: 154 - 169
History
Received: Oct 13, 2000
Published online: Sep 1, 2001
Published in print: Sep 2001
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.