Tsunami loading of near-shoreline structures: a primer

Authors: Palermo, Dan; Nistor, Ioan; Nouri, Younes; Cornett, Andrew

Source: Canadian Journal of Civil Engineering, Volume 36, Number 11, November 2009 , pp. 1804-1815(12)

Publisher: NRC Research Press

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Abstract:

The effects and estimation of tsunami-induced loading on near-shoreline structures located within inundation zones have recently gained significant interest from researchers, engineers, and government agencies. Building codes, namely the 2005 National building code of Canada, do not explicitly consider tsunami loading, as it is understood that inland structures can be protected by proper site planning. However, recent catastrophic events (Indian Ocean, 2004; Solomon Islands, 2007) indicate that tsunami loading should be considered in structural design. Presented herein is a review of force components that arise from tsunami-induced hydraulic bores running inland, along with proposed loading combinations and load cases readily applicable for building codes. Test results from a comprehensive experimental program conducted in a large-scale flume are also provided. A comparison of experimental results with force components provided in readily available design documents is presented, and suggestions for improvements are further discussed.

Les effets et l'estimation des charges causées par les tsunamis sur les structures côtières situées dans des zones inondables ont récemment soulevé l'intérêt des chercheurs, des ingénieurs et des agences gouvernementales. Les codes du bâtiment, particulièrement le Code national du bâtiment du canada 2005, ne considèrent pas explicitement la charge de tsunami puisqu'il est entendu que les structures à l'intérieur des terres peuvent être protégées par une planification adéquate du site. Toutefois, de récents événements catastrophiques (Océan Indien, 2004, Îles Salomon 2007) indiquent que l'on doit tenir compte de la charge de tsunami dans la conception structurale. Le présent article comporte une revue des composantes des forces survenant lorsque des ondes à front raide générées par un tsunami passent sur l'île; il propose en plus des combinaisons de charge et des cas de charge qui pourraient être inscrits dans les codes de bâtiment. Les résultats d'essais d'un programme expérimental complet réalisé dans un canal à grande échelle sont également fournis. Une comparaison des résultats expérimentaux avec les composantes des forces est présentée dans les documents de conception disponibles dès maintenant et des suggestions d'amélioration sont discutées en profondeur.

Document Type: Research article

Publication date: 2009-11-01

More about this publication?
  • Published since 1974, this monthly publication is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structure engineering, construction engineering, engineering mechanics, and engineering materials, and a history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academe. New developments in engineering design and construction are also featured.
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