On the seismic behavior of cylindrical base-isolated liquid storage tanks excited by long-period ground motions

Shekari, Mohammad Reza; Khaji, N.; Ahmadi, Morteza

doi:10.1016/j.soildyn.2010.04.008

Cited by 75 publications

(30 citation statements)

References 24 publications

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“…They observed that lead-rubber bearing is more effective to control the earthquake response of liquid storage tanks. Effectiveness of the different isolation systems under long period earthquakes are also investigated by several researchers Jangid, 2008, 2012;Shekari et al, 2010]. These studies suggested that precautions must be taken during selection and design of the isolation system to minimize the response of the base-isolated liquid storage tanks under long period earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models

Saha

Matsagar

Jain

2014

J. Earthquake and Tsunami

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The effect of different isolator parameters on earthquake response of base-isolated liquid storage tanks is investigated herein. Mechanical analog, with three lumped masses, is used to model ground supported base-isolated liquid storage tank, and analyzed for recorded earthquake ground accelerations. The nonlinear force-deformation behavior of the isolator is mathematically modeled in two different ways, represented by (a) equivalent linear elastic-viscous and (b) bi-linear hysteretic behaviors. The equations of motion for the base-isolated tank are derived and solved in the incremental form using Newmark's step-by-step method of integration. Two different configurations of liquid storage tank (i.e. broad and slender) are considered to show the effect of the equivalent linear and bi-linear modeling of the isolator on the important earthquake response quantities. Effect of nonlinear hysteretic modeling of the isolator on peak response of the baseisolated liquid storage tanks is also investigated. The effect on earthquake response of the base-isolated liquid storage tank is studied for different parameters of the isolator for a range of slenderness ratio of the tank. The parameters considered include the characteristic strength of the isolator, isolation time period, isolator yield displacement etc. Significant difference is observed in the earthquake response of the base-isolated liquid storage tanks owing to the equivalent linear and bi-linear modeling approaches of the isolator. However, for bi-linear and nonlinear hysteretic modeling of the isolator, difference between the peak earthquake response of base-isolated liquid storage tanks are insignificant. The earthquake response of base-isolated liquid storage tanks is significantly influenced by the variation in the isolator parameters and slenderness ratio of the tank

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Section: Introductionmentioning

confidence: 99%

Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models

Saha

Matsagar

Jain

2014

J. Earthquake and Tsunami

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“…These are universally accepted as common relations in order to find these frequencies. Eqs (1,2) are the most fundamental when it comes to convective frequency.…”

Section: Modal Analysis and Validationmentioning

confidence: 99%

Seismic Vulnerability of Cylindrical Steel Liquid Storage Tanks for an Oil Industry Plant

Yazdanian

Mashal²,

Razavi³

2017

ANADOLU UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY a - Applied Sciences and Engineering

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Liquid storage tanks have a pivotal role in supplying of different type of liquids. In addition, they are widely used in disparate industrial plants. Failure of these structures has dire consequences and detrimental impacts on economy of countries. Hence, in this study, the seismic behavior of these structures with an emphasis on their seismic vulnerability under different conditions is analyzed. For this purpose, an oil industry plant in the south of Iran is considered and five different tanks with different dimension are chosen. Three significant vulnerability parameters which are usually taken into account for evaluation of tanks are investigated. These criterions include: 1) Sliding, 2) Elasto-Plastic buckling (Elephant foot buckling), 3) Tank roof damage. Four integral analyses including static, modal, response spectrum and time history is utilized. In time history analyses, multiple records are selected to conduct a comprehensive evaluation of system. Finally, the results show that tanks are safe under Elephant foot buckling fragility parameter. However, this is not always the case for tank's roof vulnerability and sliding. In addition to this, tanks with higher diameter have witnessed higher wave height and are possible to be in danger for tank's roof vulnerability, while these tanks have shown an appropriate behavior against sliding.

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“…Solving the fluidstructure interaction problem, they found that seismic isolation is more effective in slender tanks than in broad tanks, and flexible isolators reduce the seismic response more effectively than stiff isolators. In a follow-up paper [42], considerations were extended to the particular circumstances of long-period ground motions.…”

Section: Dynamic Response Of Vertical Cylindrical Tanksmentioning

confidence: 99%

Liquid-containment shells of revolution: A review of recent studies on strength, stability and dynamics

Zingoni

2015

Thin-Walled Structures

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On the seismic behavior of cylindrical base-isolated liquid storage tanks excited by long-period ground motions

Cited by 75 publications

References 24 publications

Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models

Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models

Seismic Vulnerability of Cylindrical Steel Liquid Storage Tanks for an Oil Industry Plant

Liquid-containment shells of revolution: A review of recent studies on strength, stability and dynamics

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