Reinforced Ice and Ice Domes: Opportunities for the North*

It is suggested that reinforced ice domes in spans up to 100–150 metres and constructed by spraying water onto a spherical inflatable membrane could be economic solutions for constructing temporary enclosures in cold regions. The feasibility and practicability of such a novel and economical erection/construction technique has been demonstrated at The University of Calgary by constructing small-scale model ice domes and testing them until failure. Details of this erection technique, properties of the reinforcement (spun fibreglass yarn) and the load-deflection-time behaviour of the model domes are described. The first part of the paper gives some results on the short-duration load and creep response of unreinforced and reinforced ice samples, including shear. pull-out/bond and tensile strength. The results indicate that such fibreglass yarn reinforcement does not enhance the shear strength of ice but does inhibit initiation and propagation of cracking and thereby increase the ultimate tensile strength of the composite.

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Small Scale Model Tests of Ice Gouge in Soft Sandy Silt

Volume 3: Pipeline and Riser Technology; Ocean Space Utilization ◽

10.1115/omae2008-57086 ◽

2008 ◽

Author(s):

Ingar Stava ◽

Per R. Nystro̸m ◽

Normann Vikse ◽

Ove T. Gudmestad ◽

Pavel Liferov ◽

...

Keyword(s):

Scale Model ◽

Small Scale ◽

Test Results ◽

Sandy Silt ◽

Master Thesis ◽

Pipe Segment ◽

The University ◽

Soil Mound ◽

Thesis Work ◽

Small Scale Model

Small scale gouge tests were designed and executed at the University of Stavanger in Norway as a part of master thesis work. A box (2.5 × 2.5 m) was filled with soft sandy silt and several gouge tests were performed. The subgouge soil deformations, the soil mound dimensions and the ratio between initial and residual gouge depth were measured under varying gouge parameters. Vaneshear and T-bar tests were used to estimate soil properties. A pipe segment was buried under the gouge and strains in the pipe were monitored in some of the tests. Test results are presented in this paper, including FE simulations of some of the performed experiments.

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The Pull-out Capacity of Suction Caissons in Model Investigations

Archives of Hydro-Engineering and Environmental Mechanics ◽

10.1515/heem-2016-0010 ◽

2016 ◽

Vol 63 (2-3) ◽

pp. 157-171

Author(s):

Andrzej Sawicki ◽

Łukasz Wachowski ◽

Marek Kulczykowski

Keyword(s):

Model Experiment ◽

Extraction Process ◽

Experimental Results ◽

Scale Model ◽

Small Scale ◽

Extensive Discussion ◽

Pull Out ◽

Small Scale Model ◽

Suction Caissons ◽

Good Agreement

AbstractA small-scale model experiment on the pull-out resistance of suction caissons is described. The pull-out force and suction developed within the caisson in the extraction process were recorded during the experiment. A simple breakout model, together with an elementary static formulae, is applied to predict the results obtained experimentally. There is a reasonably good agreement between the experimental results and predictions. An extensive discussion of the approach applied is included. The analysis presented in this paper is original, as it differs from other approaches mentioned in this paper, and leads to acceptable predictions. At the end, the results are also compared with another approach for predicting the capacity of suction caissons.

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STUDY OF POSITIVE PRESSURE VENTILATION IN ROOM FIRES USING A SMALL-SCALE MODEL

Heat Transfer Research ◽

10.1615/heattransres.2018025564 ◽

2019 ◽

Vol 50 (3) ◽

pp. 243-261

Author(s):

T. Y. Yeung ◽

W. K. Chow

Keyword(s):

Positive Pressure Ventilation ◽

Scale Model ◽

Positive Pressure ◽

Small Scale ◽

Room Fires ◽

Small Scale Model

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Wave Energy Hyperbaric Device for Electricity Production

Volume 5: Ocean Space Utilization; Polar and Arctic Sciences and Technology; The Robert Dean Symposium on Coastal and Ocean Engineering; Special Symposium on Offshore Renewable Energy ◽

10.1115/omae2007-29743 ◽

2007 ◽

Cited By ~ 7

Author(s):

Segen F. Estefen ◽

Paulo Roberto da Costa ◽

Eliab Ricarte ◽

Marcelo M. Pinheiro

Keyword(s):

Power Generation ◽

Wave Energy ◽

Experimental Results ◽

Electricity Production ◽

Scale Model ◽

Small Scale ◽

Regular Waves ◽

Hyperbaric Chamber ◽

Small Scale Model

Wave energy is a renewable and non-polluting source and its use is being studied in different countries. The paper presents an overview on the harnessing of energy from waves and the activities associated with setting up a plant for extracting energy from waves in Port of Pecem, on the coast of Ceara State, Brazil. The technology employed is based on storing water under pressure in a hyperbaric chamber, from which a controlled jet of water drives a standard turbine. The wave resource at the proposed location is presented in terms of statistics data obtained from previous monitoring. The device components are described and small scale model tested under regular waves representatives of the installation region. Based on the experimental results values of prescribed pressures are identified in order to optimize the power generation.

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