Numerical Investigation of the Seismic Behavior of Unanchored Steel Tanks with an emphasis on the Uplift Phenomenon

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Published Jul 19, 2020
DOI https://doi.org/10.3221/IGF-ESIS.53.08

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Jalal Akbari
Bu-Ali Sina University, Department of Civil Engineering, Hamedan, Iran
Omid Salami
Laboratory of Earthquake Engineering and Structural Health Monitoring of Infrastructures (LEESHMI), Bu-Ali Sina University, Hamedan, Iran
Mohsen Isari
Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran

Abstract

Ground steel storage tanks are widely used in different industries. Regarding the significance of these structures, ensuring the proper performance of such structures in earthquakes needs evaluating their seismic performance. The present study examines the seismic behavior of an unanchored fluid storage system via ABAQUS after validation using an experimental model. Next, the uplift of the bottom sheet is studied using the accelerogram records of the 1940 El Centro and 1994 Northridge earthquakes. The overturning moment time history of the fluid storage system and the maximum overturning moments were obtained to identify their behavior. The results indicated that not bracing storage tanks leads to the uplift phenomenon. Finally, the maximum axial stress of the storage tank shell was compared with the values recommended in the design codes to control the buckling.

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    Issue
    Vol. 14 No. 53 (2020): July 2020
    Section
    SI: Structural Integrity and Safety: Experimental and Numerical Perspectives

    How to Cite

    Akbari, J., Salami, O. and Isari, M. (2020) “Numerical Investigation of the Seismic Behavior of Unanchored Steel Tanks with an emphasis on the Uplift Phenomenon”, Frattura ed Integrità Strutturale, 14(53), pp. 92–105. doi: 10.3221/IGF-ESIS.53.08.
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