Research Papers: Seismic Engineering

On the Effectiveness of Two Isolation Systems for the Seismic Protection of Elevated Tanks

[+] Author and Article Information
Fabrizio Paolacci

Department of Engineering,
Roma Tre University,
Rome 00033, Italy

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received July 4, 2014; final manuscript received January 3, 2015; published online February 12, 2015. Assoc. Editor: Chong-Shien Tsai.

J. Pressure Vessel Technol 137(3), 031801 (Jun 01, 2015) (8 pages) Paper No: PVT-14-1104; doi: 10.1115/1.4029590 History: Received July 04, 2014; Revised January 03, 2015; Online February 12, 2015

This paper deals with the effectiveness of two isolation systems for the seismic protection of elevated steel storage tanks. In particular, the performance of high damping rubber bearings (HDRB) and friction pendulum isolators (FPS) has been analyzed. As case study, an emblematic example of elevated tanks collapsed during the Koaceli Earthquake in 1999 at Habas pharmaceutics plant in Turkey is considered. A time-history analysis conducted using lumped mass models demonstrates the high demand in terms of base shear required to the support columns and their inevitable collapse due to the insufficient shear strength. A proper design of HDRB and FPS isolator according to the EN1998 and a complete nonlinear analysis of the isolated tanks proved the high effectiveness of both isolation systems in reducing the response of the case tank. Actually, the stability conditions imposed by the code and a reduced level of convective base shear obtained with the second isolation typology suggests the use of FPS isolators rather than HDRB devices.

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Paolacci, F., Giannini, R., and De Angelis, M., 2013, “Seismic Response Mitigation of Chemical Plant Components by Passive Control Systems,” J. Loss Prev. Process Ind., 26(5), pp. 879–948. [CrossRef]
Drosos, J. C., Tsinopoulos, S. V., and Karabalis, D. L., 2005, “Seismic Response of Spherical Liquid Storage Tanks With a Dissipative Bracing System,” Proceedings of the 5th GRACM International Congress on Computational Mechanics, Limassol, Cyprus, June 29–July 1, pp. 313–319.
Sezen, H., Lıvaoğlu, R., and Doğangün, A., 2008, “Dynamic Analysis and Seismic Performance Evaluation of Above-Ground Liquid-Containing Tanks,” Eng. Struct., 30(3), pp. 794–803. [CrossRef]
Shrimali, M. K., and Jangid, R. S., 2003, “Earthquake Response of Isolated Elevated Liquid Storage Steel Tanks,” J. Constr. Steel Res., 59(10), pp. 1267–1288. [CrossRef]
Abali, E., and Uckan, E., 2010, “Parametric Analysis of Liquid Storage Tanks Base Isolated by Curved Surface Sliding Bearings,” Soil Dynamics and Earthquake Engineering, 30(1–2), January–February, pp. 21–31. [CrossRef]
Tsai, C. S., Chiang, T. C., and Chen, B. J., 2005, “Experimental Evaluation for Piecewise Exact Solution of Seismic Responses of Spherical Sliding Type Isolated Structures,” Earthquake Eng. Struct. Dyn., 34(9), pp. 1027–1046. [CrossRef]
Tsai, C. S., Chiang, T. C., and Chen, B. J., 2006, “Component and Shaking Table Tests for Full Scale Multiple Friction Pendulum System,” Earthquake Eng. Struct. Dyn., 35(13), pp. 1653–1675. [CrossRef]
Marioni, A., 1998, “The Use of High Damping Rubber Bearings for the Protection of the Structures From the Seismic Risk,” Jornadas Portuguesas de Engenharia de Estruturas, LNEC, Lisboa, pp. 25–28.
Santagelo, A., Scibilia, N., and Stadarelli, R., 2007, “Seismic Isolation of a Tanks at Priolo Gargallo (in Italian),” Proceedings of the Giornate AICAP 2007, Salerno, Italy, Oct. 4–6, pp. 543–550.
Housner, G. W., 1963, “The Dynamic Behaviour of Water Tanks,” Bull. Seismol. Soc. Am., 53, pp. 381–387.
Fischer, D., 1979, “Dynamic Fluid Effects in Liquid-Filled Flexible Cylindrical Tanks,” Earthquake Eng. Struct. Dyn., 7(6), pp. 587–601. [CrossRef]
Haroun, M. A., and Hausner, G. W., 1981, “Earthquake Response of Deformable Liquid Storage Tanks,” ASME J. Appl. Mech., 48(2), pp. 411–418. [CrossRef]
Veletsos, A. S., and Tang, Y., 1987, “Rocking Response of Liquid Storage Tanks,” J. Eng. Mech., 113(11), pp. 1774–1792. [CrossRef]
De Angelis, M., Giannini, R., and Paolacci, F., 2010, “Experimental Investigation on the Seismic Response of a Steel Liquid Storage Tank Equipped With Floating Roof by Shaking Table Tests,” Earthquake Eng. Struct. Dyn., 39(4), pp. 377–396. [CrossRef]
Wang, Y., Teng, M., and Chung, K., 2001, “Seismic Isolation of Rigid Cylindrical Tanks Using Friction Pendulum Bearings,” Earthquake Eng. Struct. Dyn., 30(7), pp. 1083–1099. [CrossRef]
Shrimali, M. K., and Jangid, R. S., 2002, “Non-Linear Seismic Response of Base-Isolated Liquid Storage Tanks to Bi-Directional Excitation,” Nucl. Eng. Des., 217(1–2), pp. 1–20. [CrossRef]
Tajirian, F. F., 1998, “Base Isolation Design for Civil Components and Civil Structures,” Proceedings of the Structural Engineers World Congress, San Francisco, CA, pp. 233–244.
Calugaru, V., and Mahin, S. A., 2009, “Experimental and Analytical Studies of Fixed Base and Seismically Isolated Liquid Storage Tanks,” Proceedings of the 3rd International Conference on Advances in Experimental Structural Engineering, San Francisco, CA, Oct. 16, pp. 1–12.
Paolacci, F., 2014, “On the Effectiveness of Two Isolation Systems for the Seismic Protection of Elevated Tanks,” ASME Paper No. PVP2014-28563. [CrossRef]
EN 1998-4, 2006, Eurocode 8: Design of Structures for Earthquake Resistance—Part 4: Silos, Tanks and Pipeline , EN 1998-4, Brussels, Belgium.
CEN; 2006, Eurocode 8: Design of Structures for Earthquake Resistance – Design of Structures for Earthquake Resistance, Part 4: Silos, Tanks and Pipeline. European Committee for Standardisation, Brussels, Belgium.
CEN; 2014, Eurocode 8: Design of Structures for Earthquake Resistance, Part 1: General Rules, Seismic Actions and Rules for Buildings. European Committee for Standardisation, Brussels. Belgium.
Turkish Seismic Code,2007, “ Specification for Structures to be Built in Disaster Areas,” Ministry of Public Works and Settlement Government of Republic of Turkey.
Paolacci, F., Giannini, R., Uckan, E., Akbas, E., and Corritore, D., 2014, “Seismic Response Mitigation of Elevated Tanks by HDRB and FPS Isolation Systems,” Proceedings of the Second European Conference on Earthquake Engineering and Seismology, 2ECEES, Istanbul, Turkey, Aug. 25–29, (CDROM).


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Fig. 1

Equivalent spring–mass model of elevated tanks: (a) general and (b) broad tanks

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Fig. 2

Lumped mass 3DOF model for nonisolated elevated tanks

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Fig. 3

Lumped mass 4DOF model for isolated elevated tanks

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Fig. 4

Storage tanks of liquid oxygen at Habas plant after the strong event of Itzmit (1999) (courtesy: The Karl V. Steinbrugge slide and photograph collection world earthquakes and earthquake engineering).

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Fig. 5

Plan view of the tank

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Fig. 6

Section in the vertical plan of the tank

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Fig. 7

Accelerogram record of Yamarica (330 deg North)

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Fig. 8

Response spectra of the seven unscaled accelerograms

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Fig. 9

Nonisolated case: time-history of base shear components for Yarimca 330 record

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Fig. 10

Average wall pressures–nonisolated case (a) total, (b) impulsive, and (c) convective

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Fig. 12

Average pressures on the wall–isolated case–HDRB: (a) total, (b) impulsive, and (c) convective

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Fig. 13

Isolated case: time-history of base shear components for Yamarica record–isolated case-FPS

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Fig. 14

Cyclic response of an FPS isolator–Duzce270 record

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Fig. 15

Average pressures on the wall–isolated case–FPS isolators

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Fig. 16

Membrane tensions: (a) HDRB and (b) FPS




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