Urban waterfront rehabilitation in Pelluhue County, Chile affected by the chile 2010 earthquake and tsunami

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2014-12
Authors
Igualt, Felipe Eduardo
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[Honolulu] : [University of Hawaii at Manoa], [December 2014]
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During the morning of February 27th, 2010, a strong earthquake with a magnitude of 8.8Mw affected the central region of Chile. As a result of the earthquake, tsunami waves were generated. These waves hit the coastal towns with great intensity in the central region of Chile, from Valparaiso to Tirua. The main economical activities: fishing, tourism, and other forms of local commerce, were seriously affected due to the destruction of the earthquake and tsunami. Pelluhue County is located in the southwest zone of the VII region, the central zone of Chile, which is part of Cauquenes' province local government. Its coastline is lies along the Pacific Ocean. In this county, the damage was mostly concentrated along the waterfront, having a great degree of destruction up into the river mouths. In this thesis the flood destruction is analyzed in the urban waterfront of Curanipe, Pelluhue, and Mariscadero. The damage generated by the tsunami flood illustrates the high degree of exposure of buildings and structures abutting Pelluhue's waterfront. The nonexistence of any mitigation elements allowed the direct impact of tsunami waves against dwellings. Compounding the issue, the lack of an evacuation plan increased the number of victims in the county. The effectiveness of the most common artificial coastal defensive structures is evaluated in different tsunami scenarios. By analyzing the performance of these systems, it is clear that the forces of nature are stronger than any structure trying to contain them. This thesis explores the integration of a tsunami forest in the waterfront, which helps to consolidate the existing dune barrier. In this way natural-mitigation barriers are incorporated in the waterfront and riverfront, which not only play a defensive role, but also create a natural environment that support tourism, and incorporates an educative program along the circulation paths through the forest and dune barrier.
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D.Arch. University of Hawaii at Manoa 2014.
Includes bibliographical references.
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artificial coastal defensive structures
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Theses for the degree of Doctor of Architecture (University of Hawaii at Manoa).
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