Crowd induced deflection of Dow's Lake ice cover during Winterlude Festival 1985
The response of a 0.6 m thick floating ice cover in a small lake is described, when 60,000 spectators gathered to witness a concert on stages built on the ice. To monitor and evaluate safety, deflection and surface strain on the ice cover were recorded continuously in front of the stages. The data i...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
1990
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| Online Access: | https://nrc-publications.canada.ca/eng/view/accepted/?id=f7539289-86fd-4c7a-b226-c94f57be8b78 https://nrc-publications.canada.ca/eng/view/object/?id=f7539289-86fd-4c7a-b226-c94f57be8b78 https://nrc-publications.canada.ca/fra/voir/objet/?id=f7539289-86fd-4c7a-b226-c94f57be8b78 |
| Summary: | The response of a 0.6 m thick floating ice cover in a small lake is described, when 60,000 spectators gathered to witness a concert on stages built on the ice. To monitor and evaluate safety, deflection and surface strain on the ice cover were recorded continuously in front of the stages. The data illustrates the effect of crowd movement on the deformation of the ice cover and emphasizes the importance of careful planning of events, as well as crowd control by the organizers. Ce document décrit la réponse de la couche de glace flottante de 0,6 m d'épaisseur qui recouvrait un petit lac lorsque 60 000 spectateurs se sont rassemblés pour assister à un concert sur des estrades montées sur la glace. Afin de contrôler et d'évaluer la sécurité, on a enregistré en permanence le fléchissement et la déformation superficielle de la couverture de glace devant les estrades. Les données illustrent l'effet du mouvement d'une foule sur la déformation de la couche de glace et montrent combien il importe que les organisateurs préparent minutieusement les événements et assurent la maîtrise de la foule. Peer reviewed: Yes NRC publication: Yes |
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