Engineering Applications in Permafrost Areas 48 1 Solution to frost heave of ice arenas
Frost heave of ice arenas has been a major problem in the Vancouver area owing to an environment with plentiful rainfall, freeze-thaw cycles for seven months of the year, and frost-susceptible soils. This paper presents the case history of a typical skating rink, which suffered excessive, irregulaf...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.557.822 http://pubs.aina.ucalgary.ca/cpc/cpc4-481.pdf |
| Summary: | Frost heave of ice arenas has been a major problem in the Vancouver area owing to an environment with plentiful rainfall, freeze-thaw cycles for seven months of the year, and frost-susceptible soils. This paper presents the case history of a typical skating rink, which suffered excessive, irregulaf heaves in the range of 3 to 8 in. (7.6 to 20.3 cm) and resulted in shutdown of operations nine years after construction. The remedial measures involved removal of the frozen soil, replacement with free-draining granular backfill and construction of a thermal barrier at foundation level to prevent passage of frost from the ice-making system into the subsoil. The thermal barrier consists of Styrofoam insulating layers, and an active heating system involving circulation of warm brine through plastic pipes beneath the insu-lation. The brine is warmed by utilizing waste heat from the refrigeration plant, and thus is very eco-nomical in operating costs compared to conventional systems. This paper describes the analysis of the problem, design, and practical construction techniques used to reconstruct the rink with a frost-free sub-base, which allows for year-round operation of a level ice surface with a minimum of maintenance. Le gonflement dfi au gel dans les patinoires est un probltme majeur dans la region de Vancouver a |
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