Level Ice Loads on Various Arctic Structures

극지대 구조물 형태에 따른 빙력고찰

  • 조철희 (현대중공업, 해양사업본부)
  • Published : 1996.05.01

Abstract

Ice loads can determined by many factors like ice properies and dimension, velocity and type of structures. The magnitude of ice load varies with the failure mode which can be predicted by failure maps if the aspect ratio and strain rate are known. To reduce the ice force, various types of structure have been investigated and it is now known that the identor shape plays an important role in reducing ice load on Arctic offshoe structures. The conical and wedge structures are good applied examples in the Arctic region. In this study, ice forces on single wedge indentors are investigated for crushing failure mode. The ice loads on wedged indentors are compared with those on cylindrical structures. Also the concept of "ice annual"is introduced to verify the ice loads to multi and single wedge structures.tructures.

Keywords

References

  1. Proc. IAHR Ice Symp. An Analysis of Observed Failure Mechanisms for Laboratory, First-Year and Multi-Year Ice Blanchet,D.;Churcher,A.;Fitzpatrick,J.;Badra,P.
  2. Journal of Glaciology v.19 no.81 Indentation Tests to Investigate Ice Pressures on Vertical Piers Croasdale,K.R.;Morgenstern,N.R.;Nuttall,J.B.
  3. USSR Acad. Sci. Siberian Branch, CRREL Draft Translation No. 260 Action of Ice on Engineering Structures Korzhavin,K.N.
  4. Ice Mechanics Michel,B.
  5. Proc. Second State of the Art IAHR Working Group on Ice Forces v.4 Ice Properties in Relaton to Ice Forces Nadreau,J.P;Michel,B.
  6. Proc. Int. OMAE Symp. v.4 Indentation and Penetration of Edge-Loaded Freshwater Ice Sheets in the Brittle Range Timco,G.W.
  7. Proc. Int. OMAE Symp. v.Ⅳ Methods for Minimizing Iceberg Impact Loads on Gravity Base Structures Iceberg Bumpers; Conceptual Design Wishahy,M.A.