0
research-article

A 3D model for ice rubble pile-ice sheet-conical structure interaction at the piers of Confederation Bridge, Canada

[+] Author and Article Information
Chee K. Wong

Department of Civil Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive, N.W., Calgary, Alberta, Canada
wongck@ucalgary.ca

Thomas Brown

Department of Civil Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive, N.W., Calgary, Alberta, Canada
brownt@ucalgary.ca

1Corresponding author.

ASME doi:10.1115/1.4039261 History: Received September 18, 2017; Revised January 05, 2018

Abstract

Offshore structures constructed in waters where ice cover is prevalent for several months a year are subjected to ice loading. Some of these structures are conical or sloped-faced in shape, where flexural failure becomes the dominant mode of failure for the ice sheet. The flexural failure mode reduces the magnitude of ice-structure interaction loads in comparison to other modes of failure. Various researchers have devised flexural failure models for ice-conical structure interactions. Each model shares the same principle of the ice sheet being modelled as a beam on an elastic foundation, but each model has different limitations in precisely simulating the interaction. Some models do not incorporate the ice rubble pile, while other models make over-simplified assumptions for three-dimensional behaviour. The proposed three-dimensional model aims to reduce some of these limitations by modelling the geometry of the ice rubble pile around the conical pier using the results of small-scale tests, modelling the loads exerted by the ice rubble pile on the conical structure and ice sheet with a rigorous method of slices, adding driving forces in keeping the rubble pile intact and in upward motion during the interaction, accounting for eccentric offsetting moments at the ice-structure contacts, and modelling the flexural behaviour of the ice sheet subject to ice rubble loads using finite element method. The proposed model is used to analyze the interaction events recorded at the conical piers of the Confederation Bridge over a period of 11 years.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In