Seismic Isolation and Protection Systems
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Seismic Isolation and Protection Systems
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Seismic Isolation and Protection Systems

Author: Joaquín Martí, María Crespo and Francisco Martínez | Size: 2.4 MB | Format: PDF | Quality: Unspecified | Publisher: mathematical sciences publishers | Year: 2010 | pages: 19

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In severe seismic environments, tanks for storage of liquefied natural gas may benefit from seismic isolation. As the design accelerations increase, the inner tank undergoes progressively greater demands and may suffer from corner uplift, elephant’s foot buckling, gross sliding, shell thickness requirements
beyond what can be reliably welded and, eventually, global uplift. Some of these problems cause extra costs while others make the construction impossible. The seismic environments at which the previous problems arise are quantified for modern 160,000m3 tanks, whether supported on shallow or pile foundations, for both a conventional design and one employing seismic isolation. Additionally, by introducing some cost assumptions, comparisons can be made as to the cost of dealing with the seismic threat for each seismic environment and tank design option. It then becomes possible to establish the seismic environments that require seismic isolation, as well as to offer guidance for decisions in intermediate cases.

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