Experimental investigation on the seismic isolation for a legged wine storage tank

Colombo, J.I.; Almazán, José L.

doi:10.1016/j.jcsr.2017.02.013

Cited by 30 publications

(7 citation statements)

References 19 publications

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“…Both artificial, as well as natural excitations recorded from the 2010 Mw 8.8 Maule Earthquake, were used. These records were also used by Colombo and Almazán 42 . The target spectrum of the artificial records corresponded to the Chilean code spectrum for seismically isolated structures for 5% damping, soil type I, and seismic zone III.…”

Section: Description Of the Experimental Programmentioning

confidence: 99%

“…These records were also used by Colombo and Almazán. 42 The target spectrum of the artificial records corresponded to the Chilean code spectrum for seismically isolated structures for 5% damping, soil type I, and seismic zone III. Additionally, one of the records corresponded to a harmonic sinusoidal input with a frequency of 1Hz.…”

Section: History Of Loading and Testing Protocolsmentioning

confidence: 99%

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Full‐scale shaking table test and numerical modeling of a 3000‐liter legged storage tank isolated with a vertical rocking isolation system

Reyes

Almazán

Vassiliou

et al. 2022

Earthq Engng Struct Dyn

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This paper presents the numerical and experimental evaluation of a vertical‐rocking isolation (VRI). This evaluation is done by 1‐D shaking table tests performed on a full‐scale legged storage tank of 3000‐liters capacity and its representation through a simple yet representative rigid lumped‐mass model approach. The isolation system setup consisted of four ISO3D‐2G devices, each one placed on each leg of the tank, which uses high‐damping natural rubber to generate the restoring and dissipative forces. The ISO3D‐2G device is vertically flexible and laterally rigid, enabling the isolation mechanism of the rocking motion of the tank. The experiments were carried out using three white noise for the system identification and 17 ground motions inputs for the system validation. The measured variables included the lateral acceleration and displacement of the tank, and the vertical and rotational behavior of the isolation interface. The identification results showed a vertical‐rotational coupled fundamental mode that is highly dependent on the amplitude of deformation, with a period varying from 0.5 to more than 1 s, depending on the intensity of the motion. The maximum displacement of the tank at the top remained below 13 cm with total accelerations of nearly 0.3 g, both for motions with Peak Ground Acceleration (PGA) values ranging from 0.3 to 0.8 g. The mean maximum values were predicted with the simplified model with errors of less than 10% and 21% for displacements and accelerations, respectively. Finally, the results show that the behavior of vertical‐rocking isolated structures can be predicted by simplified models with reasonable errors and that the development of simple design guidelines and equations for VRI systems is possible.

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Section: Description Of the Experimental Programmentioning

confidence: 99%

Section: History Of Loading and Testing Protocolsmentioning

confidence: 99%

Full‐scale shaking table test and numerical modeling of a 3000‐liter legged storage tank isolated with a vertical rocking isolation system

Reyes

Almazán

Vassiliou

et al. 2022

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…The larger the isolation period and damping ratio of isolation layer, the higher the seismic isolation and damping efficiency (Cui et al 2019). Colombo and Almazan (2017) proposed an isolation system suitable for an elevated wine storage tank, and verified the isolation effect through experimental studies. Study show that friction pendulum systems and variable frequency pendulum isolation bearings have the same seismic isolation effect for the tank under the far-field ground motions.…”

Section: R a F T 1 Introductionmentioning

confidence: 92%

Shaking table test of combination isolation plate-shell integrated concrete liquid-storage structure

Qi¹,

Cheng²,

Zhang³

et al. 2022

Can. J. Civ. Eng.

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To obtain the seismic performance of plate-shell integrated concrete liquid-storage structures (PSICLSS), a scale test model was built for shaking table testing. A combination isolation layer is proposed, and the dynamic responses of non-isolation and combination isolation PSICLSS under unidirectional and bidirectional earthquakes were tested. The results show that the combination isolation layer can change the spectral characteristics of the input acceleration, reducing the acceleration response and displacement of the structure, but it will increase the hydrodynamic pressure and liquid sloshing height. Under earthquake action, the liquid sloshing of combination isolation PSICLSS clearly appears as a nonlinear splash phenomenon. When considering the vertical earthquake, the horizontal acceleration response of PSICLSS and the liquid sloshing height change little, the peak hydrodynamic pressure changes significantly, and the peak position also changes. The maximum displacement of the isolation layer increases, but the residual displacement decreases.

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“…The typical structural damages in tank systems (amongst others, see Caprinozzi et al, 16 Merino et al, 64 Bakalis and Karomanos, 15 Merino et al 10 ) have been identified according to field observations after seismic events (Manos, 65 Swan et al, 66 Hatayama et al, 67 Krausman et al, 68 Suzuki, 69 Zareian et al, 70 Brunesi et al 3 ) and also from past experimental and numerical studies (De Angelis et al, 71 Colombo and Almazán, 72 Brunesi et al, 3 Phan et al, 73 Bakalis et al 74 ).…”

Section: Damage States For the Steel Storage Tankmentioning

confidence: 98%

“…have been identified according to field observations after seismic events (Manos, 65 Swan et al., 66 Hatayama et al., 67 Krausman et al., 68 Suzuki, 69 Zareian et al., 70 Brunesi et al 3 71 Colombo and Almazán, 72 Brunesi et al., 3 Phan et al., 73 Bakalis et al 74 …”

Section: Damage States For the Steel Storage Tankmentioning

confidence: 99%

Seismic vulnerability assessment of steel storage tanks protected through sliding isolators

Gabbianelli

Milanesi

Gandelli

et al. 2023

Earthq Engng Struct Dyn

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An adequate seismic protection of steel storage tanks of industrial, chemical and petrochemical plants is essential since potential consequences of failures, besides the economic losses, can be catastrophic for the environment and for people living nearby. Among the most common damages suffered by steel tanks in recent earthquakes, there are the elephant‐foot‐buckling of the perimeter wall and the tanks’ uplift or overturning. Due to the uncertainties related to the estimation of the mechanical properties of filled tanks and related seismic loads (i.e. dynamic overpressures generated by the content), conventional design approaches may lead to unsafe or, on the contrary, oversized solutions. Among effective alternatives, base isolation through Curved Surface Slider isolators (CSSs) offers some valuable advantages like high load bearing and displacement capacity with compact dimensions, independence of the oscillation period on the supported mass, and minimisation of torsional effects. Despite being neglected by most common commercial FEM codes, as a drawback, recent studies pointed out that the initial peak of friction force at CSSs’ motion breakaway can lead to significantly increased lateral deformations and accelerations of the superstructure. Within this framework in this study, a refined numerical model is developed in OpenSees FEM code, and an exhaustive parametric study is carried out to investigate the effect of the breakaway on isolated tanks providing some useful insights for the selection of the most suitable isolators.

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Experimental investigation on the seismic isolation for a legged wine storage tank

Cited by 30 publications

References 19 publications

Full‐scale shaking table test and numerical modeling of a 3000‐liter legged storage tank isolated with a vertical rocking isolation system

Full‐scale shaking table test and numerical modeling of a 3000‐liter legged storage tank isolated with a vertical rocking isolation system

Shaking table test of combination isolation plate-shell integrated concrete liquid-storage structure

Seismic vulnerability assessment of steel storage tanks protected through sliding isolators

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