Some Remarks on the Seismic Demand Estimation in the Context of Vulnerability Assessm
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Some Remarks on the Seismic Demand Estimation in the Context of Vulnerability Assessm
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Some Remarks on the Seismic Demand Estimation in the Context of Vulnerability Assessment of Large Steel Storage Tank Facilities

Author: Antonio Di Carluccio and Giovanni Fabbrocino | Size: 2 MB | Format: PDF | Quality: Unspecified | Publisher: International Scholarly Research Network ISRN Civil Engineering Volume 2012, Article ID 271414, 12 pages doi:10.5402/2012/271414 | Year: 2012 | pages: 13

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The seismic behavior of steel tanks is relevant in industrial risk assessment because collapse of these structures may trigger other catastrophic phenomena due to loss of containment. Therefore, seismic assessment should be focused on for leakage-based limit states. From a seismic structural perspective, damages sufferedby tanks are generally related to large axial compressive stresses, which can induce shell buckling near the base and large displacements of unanchored structures resulting in the detachment of piping. This paper approaches the analysis of seismic response of sliding, nonuplifting, unanchored tanks subject to seismic actions. Simplified methods for dynamic analysis and seismic demand estimation in terms of base displacement and compressive shell stress are analyzed. In particular, attention is focussed on some computational issues related to the solution of the dynamic problem and on the extension of the incremental dynamic analysis (IDA) technique to storage tanks.


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