Ice-Induced Jacket Structure Vibrations in Bohai Sea
Publication: Journal of Cold Regions Engineering
Volume 14, Issue 2
Abstract
Full-scale tests of ice-structure interaction were conducted on three multileg jacket platforms in Bohai Sea. Two of them were installed with ice-breaking cones on each of their four legs to reduce ice force and mitigate ice-induced vibration. The other is a three-leg platform with cylindrical piles without ice-breaking cones. Dynamic responses of these structures were recorded continuously, the variations in ice force were measured by load panels, and the failure processes of ice acting on cones and cylindrical pile were observed by video cameras. For the structure with ice-breaking cones, the ice sheet fails in bending, but the breaking frequency could coincide with the natural frequency of the structure at a fast ice speed and significant dynamic amplifying could be induced. For the cylindrical structure, two types of vibration are classed. At a high ice speed, the amplitude of structure response is uneven and ice fails with the brittle flanking model. At a medium ice speed, the event of steady-state vibration could take place. The explanation of ice-induced steady-state vibration is presented based on failure processes of ice within the ductile-brittle transition zone. Field observations reveal that sea ice can induce the offshore jacket structure to vibrate in resonance regardless of the fact that ice-breaking cones have been installed.
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References
1.
Ashby, M. F., et al. (1986). “Non-simultaneous failure and ice loads on structures.” Proc., Offshore Technol. Conf., Offshore Technology Conference, Houston, Tex., 399–404.
2.
Bekker, A. T. (1995). “Ice-structure interaction: failure model.” Proc., 15th Int. Offshore and Polar Engrg. Conf., International Society of Offshore and Polar Engineers, Golden, Colo., 2, 403–411.
3.
Blenkarn, K. A. (1970). “Measurement and analysis of ice forces on Cook Inlet structures.” Proc., 2nd Offshore Technol. Conf., Offshore Technology Conference, Houston, Tex, 2, 365–378.
4.
Chao, J. C. (1992). “Comparison of sheet ice load prediction methods and experimental data for conical structures.” Proc., OMAE Conf., American Society of Mechanical Engineers, New York, 4, 188–193.
5.
Cole, D. M. (1988). “Crack nucleation in polycrystalline ice.” Cold Region Sci. and Technol., 15, 79–87.
6.
Croasdale, K. R. (1980). “Ice forces on fixed rigid structures.” CRREL Rep. 80-26, IAHR Working Group on Ice Forces, Cold Regions Research and Engineering Laboratory, Hanover, N.H., 34–106.
7.
Engelbrekston, A. (1977). “Dynamic ice loads on lighthouse structures.” Proc., 4th Int. Conf. on Port and Oc. Engrg. under Arctic Conditions, St. John's Canada, 2, 654–864.
8.
Engelbrekston, A. (1983). “Observations of resonant vibrating lighthouse structure in moving ice.” Proc., 7th Conf. on Port and Oc. Engrg. under Arctic Conditions, Helsinki, Finland, 2, 855–864.
9.
Engelbrekston, A., and Janson, J. E. (1985). “Field observations of ice action on concrete structures in the Baltic Sea.” Concrete Int., 7(8), 48–52.
10.
Frederking, R. ( 1979). “Dynamic ice forces on inclined structure.” Physics and mechanics of ice, P. Tryde, ed., Springer-Verlag, Berlin York, 104–116.
11.
Hallam, S. D., Duval, P., and Ashby, M. F. (1987). “A study of cracks in polycrystalline ice in uniaxial compression.” J. Physique, 48(3), 1303–313.
12.
Hirayama, K., and Obara, I. (1986). “Ice forces on inclined structures.” Proc., 5th Int. Offshore Mech. and Arctic Engrg., (OMAE) Symp., Tokyo, 4, 515–520.
13.
Izumiyama, K., Irani, M. B., and Timco, G. W. (1994). “Influence of compliance of structure on ice load.” Proc., 12th Int. Assoc. for Hydr. Res. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 1, 229–238.
14.
Jefferies, M. G., and Wright, W. H. (1988). “Dynamic response of `Molikpaq' to ice-structure interaction.” Proc., 7th Int. Conf. on Offshore Mech. and Arctic Engrg., Houston, Tex., 4, 201–220.
15.
Jordaan, I. (1988). “Modeling of progressive damage in ice.” Proc., 9th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 2, 585–625.
16.
Jordaan, I., and Timco, G. W. (1988). “Dynamics of the ice-crushing process.” J. Glaciology, 34(118), 318–325.
17.
Karna, K., and Jarvinen, E. (1994). “Dynamic unloading of across the face of a wide structure.” Proc., 12th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 1018–1039.
18.
Karna, K., Kamesaki, K., and Tsukuda, H. (1998). “A layered flaking model of ice-structure interaction.” Proc., 14th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 1, 575–582.
19.
Karna, M. G., and Wright, W. H. (1989). “Dynamic response of narrow structures to ice crushing.” Cold Regions Sci. and Technol., 17, 173–187.
20.
Karna, T., and Muhonen, A. (1990). “Preliminary results from ice indentation tests using flexible and rigid indentors.” Proc., 10th Int. Assoc. for Hydr. Res. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 261–275.
21.
Maattanen, M. (1977). “Stability of self-excited ice-induced structural vibrations.” Proc., 4th Int. Conf. on Port and Oc. Engrg. under Arctic conditions, St. John's, Canada, 2, 684–694.
22.
Maattanen, M. (1978). “On conditions for the rise of self-excited ice-induced autonomous oscillations in slender marine piles.” Res. Rep. 25, Finnish-Swedish Winter Navigation Board, Helsinki, Finland.
23.
Matlock, H., Dawkin, W. P., and Panak, J. J. (1971). “Analytical model for ice structure interaction.”J. Engrg. Mech., ASCE, 97(4), 1083–1092.
24.
Michel, B., and Toussaint, N. (1977). “Mechanism and theory of indentation of ice plates.” J. Glaciology, 19(81), 285–300.
25.
Montgomery, C. J., Gerad, B., and Lipsett, A. W. (1980). “Dynamic response of bridge piers to ice forces.” Can. J. Civ. Engrg., Ottawa, Canada, 7, 345–356.
26.
Neill, G. R. (1976). “Dynamic ice forces on piers and piles: an assessment of design guidelines in the light of resent research.” Can. J. Civ. Engrg., Ottawa, Canada, 3, 305–341.
27.
Nordlund, O. P., Karna, T., and Jarvinen, E. (1988). “Measurements of ice-induced vibrations of chanel markers.” Proc., 9th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 2, 537–548.
28.
Peyton, H. R. ( 1968). “Sea ice forces.” Ice pressures against structures, National Research Council of Canada, Ottawa, Canada, 117–123.
29.
Sanderson, T. J. O. (1988). Ice mechanics: risks to offshore structures, Graham and Trotman, London.
30.
Sodhi, D. S. (1988). “Ice-induced vibration of structures.” Proc., 9th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 625–657.
31.
Sodhi, D. S. (1991). “Ice-structure interaction during indentation tests.” Ice-Struct. Interaction: Proc., IUTAM-IAHR S. Jones et al., eds., Springer-Verlag, Berlin, 619–640.
32.
Sodhi, D. S. (1994). “A theoretical model for ice-structure interaction.” Proc., 12th Int. Assoc. for Hydr. Res. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 2, 807–815.
33.
Sodhi, D. S., Takeuchi, T., Nakzawa, N., Akagawa, S., and Saeki, H. (1998). “Ductile-brittle transition speed during ice indentation tests.” Proc., 18th Int. Conf. on Offshore Mech. and Arctic Engrg., American Society of Mechanical Engineers, New York, 625–657.
34.
Wessels, E., and Kato, K. (1988). “Ice forces on fixed and floating conical structures.” Proc., 9th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 666–707.
35.
Yue, Q. J., and Bi, X. J. (1998). “Full-scale tests and analysis of dynamic interaction between ice sheet and conical structures.” Proc., 14th Int. Assoc. for Hydr. Res. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 2 (in press).
36.
Yue, Q. J., Zheng, R. T., and Bi, X. J. (1996). “Observations of ice cracks under compression tests.” Proc., 13th Int. Symp. on Ice, International Association for Hydraulic Research, Delft, The Netherlands, 932–937.
Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 14 • Issue 2 • June 2000
Pages: 81 - 92
History
Received: Feb 2, 2000
Published online: Jun 1, 2000
Published in print: Jun 2000
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