It had been reported that some unanchored oil storage tanks had serious damages due to its uplift behavior during strong seismic excitation. In some past studies, the uplift behavior of tank was generally simulated using elastic-plastic hysteresis models. But recently, a static FEM analysis for the cyclic uplift behavior of the shell-to-bottom joint of tank has shown that the hysteresis loop of the uplift force and uplift displacement is similar to S-curve with a narrow loop area. In order to investigate the effects of S-curve Restoring Force Model (SRFM) on the nonlinear response when it is used to simulate the tank’s uplift action, in this paper, the seismic response analyses of tank are carried out by using three kinds of restoring force models including SRFM, the Elastic-Perfectly Plastic Model (EPPM) and the Bilinear Elastic-Plastic Model (BEPM), and their results are compared with each other to examine the differences. In the analyses, the tank is modeled with an equivalent mass-spring model, and three recorded earthquake accelerations scaled to 0.6G are taken as the representation of strong motions. Consequently, this paper shows that SRFM gives the maximum response displacement and ductility respectively among the three restoring force models.
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ASME/JSME 2004 Pressure Vessels and Piping Conference
July 25–29, 2004
San Diego, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4685-7
PROCEEDINGS PAPER
Study on Restoring Force Models of Nonlinear Uplift Behavior of Unanchored Oil Storage Tank Under Strong Seismic Excitation Available to Purchase
Hai Yuan,
Hai Yuan
Chiyoda Advanced Solutions Corporation, Yokohama, Japan
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Kazuma Kawano,
Kazuma Kawano
Pipeline Engineering Corporation, Yokohama, Japan
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Shoichi Yoshida
Shoichi Yoshida
Kochi National College of Technology, Kochi, Japan
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Hai Yuan
Chiyoda Advanced Solutions Corporation, Yokohama, Japan
Kazuma Kawano
Pipeline Engineering Corporation, Yokohama, Japan
Shoichi Yoshida
Kochi National College of Technology, Kochi, Japan
Paper No:
PVP2004-3070, pp. 195-200; 6 pages
Published Online:
August 12, 2008
Citation
Yuan, H, Kawano, K, & Yoshida, S. "Study on Restoring Force Models of Nonlinear Uplift Behavior of Unanchored Oil Storage Tank Under Strong Seismic Excitation." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. Storage Tank Integrity and Materials Evaluation. San Diego, California, USA. July 25–29, 2004. pp. 195-200. ASME. https://doi.org/10.1115/PVP2004-3070
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