Comparison of Kemi-I and Confederation Bridge cone ice load measurement results

Brown, Thomas G.; Määttänen, Mauri

doi:10.1016/j.coldregions.2008.04.005

Cited by 49 publications

(8 citation statements)

References 3 publications

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“…For laboratorial researches, piling up of rubble pile cannot be successfully simulated before conical structure has been a bottleneck for long time (Timco and Comett, 1997;Brown and Määttänen, 2009;Huang, 2010). So it is an important approach on investigating the flexural failure process of snow covered ice in lab.…”

Section: Snow-covered Ice Sheet In Labmentioning

confidence: 99%

“…1. Brown and Määttänen (2009) also stated that in fullscale there is snow on top of the level ice most of the time. In Bohai Sea of China, rubble piles with great dimensions were also frequently observed on the ice resisting cones installed on legs of jacket oil platforms.…”

Section: Introductionmentioning

confidence: 96%

“…However, some recently published field observations indicated that the rubble pile-ups were also prevalent in front of conical structures. For example, Brown and Määttänen (2009) gave a comparison of Kemi-I and Confederation Bridge cone ice load measurement results. In this comparison, the authors described the sustained rubble piles as a common characteristic of all ice sheet interactions with both the Kemi-I and Confederation Bridge cones, as shown in Fig.…”

Section: Introductionmentioning

confidence: 98%

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Experimental observations of the flexural failure process of snow covered ice

Huang

Sun

2016

Cold Regions Science and Technology

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Section: Snow-covered Ice Sheet In Labmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

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Experimental observations of the flexural failure process of snow covered ice

Huang

Sun

2016

Cold Regions Science and Technology

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“…In contrast, when interacting with vertical structures, the ice covers fail in crushing mode. Thus, the ice-induced loads for conical structures are much lower than the loads for vertical structures (Daley et al, 1998;Yue and Bi, 2000;Brown and Määttänen, 2009;Huang and Li, 2011). By reducing the peak loads, the ice-breaking cone can effectively reduce the ice-induced vibration, especially avoiding the resonant vibration of vertical jacket structures.…”

Section: Introductionmentioning

confidence: 96%

Analysis of ice load on conical structure with discrete element method

Liu

2015

Engineering Computations

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2015),"Numerical study of concrete mixing transport process and mixing mechanism of truck mixer", Engineering Computations, Vol. 32 Iss 4 pp. 1041-1065 http://dx. (2015),"Discrete modeling of rockfill materials considering the irregular shaped particles and their crushability", Engineering Computations, Vol. 32 Iss 4 pp. 1104-1120 http://dx.If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services. AbstractPurpose -In oil/gas exploitations of ice-covered cold regions, conical offshore structures are designed to reduce ice force and to avoid the ice-induced intense vibrations of vertical structures. The purpose of this paper is to investigate the interaction between ice cover and conical offshore structures, the discrete element method (DEM) is introduced to determine the dynamic ice loads under different structure parameters and ice conditions. Design/methodology/approach -The ice cover is dispersed into a series of bonded spherical elements with the parallel bonding model. The interaction between ice cover and conical offshore structure is obtained based on the DEM simulation. The influence of ice velocity on ice load is compared well with the experimental data of Hamburg Ship Model Basin. Moreover, the ice load on a conical platform in the Bohai Sea is also simulated. The ice loads on its upward and downward ice-breaking cones are compared. Findings -The DEM can be used well to simulate the ice loads on conical structures. The influences of ice velocity, ice thickness, conical angle on ice loads can be analyzed with DEM simulations. Originality/value -This DEM can also be applied to simulate ice loads of different offshore structures and aid in determining ice load in offshore structure designs.

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“…Test results published by Mä ä ttä nen [12], Brown [13], Yue and Bi [14,15] show that the ice force has been reduced by the cone as the failure mode of the level ice changes from crushing to bending. Brown and Mä ä ttä nen [16] stated that besides reducing the peak values of the ice force caused by the level ice, a cone also almost eliminates ice-induced vibrations completely, especially continuous resonant vibrations. However, a different phenomenon was found in full-scale tests that were carried out in the Bohai Gulf.…”

Section: Introductionmentioning

confidence: 98%