Experimental Study on Dynamic Effective Mass of Cylindrical Silos for Storing Granular Materials

Shimamoto, Akira; Kodama, Michimasa; Yamamura, Masaaki

doi:10.3130/aijsx.379.0_79

Cited by 3 publications

(3 citation statements)

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“…The results were compared with the corresponding experimental findings [13] and the natural frequencies calculated on the FE model were 30-40% larger than those obtained based on the experimental test. Shimamoto et al [14] studied the dynamic response of silo containing coal based on the FE model, using conical shell elements. However, the numerical solution represented by the resonance curves were compared with those obtained based on the tested silo specimens.…”

Section: Seismic Behavior Of Ground-supported Steel Silosmentioning

confidence: 99%

Fragility Curves for Steel Industrial Silos Accounting for Filling Level of Granular-Like Material

Khalil,

Ruggieri,

Tateo

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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This study presents an assessment on the seismic fragility of ground-supported steel silos storing solids. As key units in the different industrial sites, storage systems are crucial for the proper and continuous functionality of the relevant industrial operations that can be intended for vital activities such as the food supply. Nevertheless, it is undeniable that storage systems are more vulnerable to seismic events than other units as evidenced in the past. In this context, this work aims to estimate the seismic fragility of ground-supported steel silos, which represent a very common form of storage systems containing granular material. The effect of key factors, such as the silo geometry and the absence/existence of the filling material, which significantly affect the seismic behavior of silos was addressed. In addition, the governing damage patterns is determined. To achieve these goals, two different silos with different distinctive geometries (slender and squat) were investigated considering the empty case and the 90%-filled case. First, a detailed numerical model was built for the investigated cases by using finite element software ABAQUS. After a phase of model validation, the dynamic properties of the silos under investigation were assessed through eigenvalue analysis, while the seismic buckling capacity of the different silos were evaluated through nonlinear static and time-history analysis. Finally, fragility curves of silos were derived by identifying the most critical buckling capacity corresponding to the specific damage patterns, showing the influence of each parameter on the seismic vulnerability and behavior of these kinds of structures.

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Section: Seismic Behavior Of Ground-supported Steel Silosmentioning

confidence: 99%

Fragility Curves for Steel Industrial Silos Accounting for Filling Level of Granular-Like Material

Khalil,

Ruggieri,

Tateo

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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show abstract

“…Studies on the seismic behavior of silos have recently gained momentum, especially with regard to single ones. Some experimental studies have been carried out to determine the effective stored material mass and seismic behavior of on-ground single silos until the 90s [14][15][16][17][18][19]. Along with the developments in technology, many parametric studies were performed on this subject in which stored material-silo wall interaction and/or soil-structure interaction were taken into account with numerical methods [20][21][22][23][24][25][26][27] A limited number of researchers intend to offer an analytical method for the seismic design of single silo systems, which provides quite satisfactory results, compared with the three-dimensional analysis but has the benefit of being easy to apply in the preliminary and final design stages [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

The behavior of the RC grouped silos under earthquake excitation according to different internal loadings

Demir¹

2023

JSEAM

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Reinforced concrete grouped silos-commonly employed in the industry to store granular materials- also needs to be designed in earthquake-prone areas. Silos experience a higher rate of structural failures than the majority of other types of construction. And one of the main causes of silo failure is the dynamic overpressures caused by stored materials under seismic loads. However, the principles determining loads on such structures and requirements for their structural analysis aren’t precisely specified in relevant codes of design. Instead of emphasizing grouped silos that interact strongly, the present dynamic design only concentrates on a single silo which can lead to unrealistic solutions for grouped silos. Therefore, it is necessary to determine the seismic behavior of grouped silos more accurately. This paper aims to investigate the seismic behavior of RC on-ground grouped silos compared to single ones by using a numerical model because of its adaptability, which allows for the analysis of a wide range of silo problems. In this context, a three-dimensional finite element model, that considered the interaction between stored material and silo wall as well as the continuity of the silo walls, was performed using ANSYS software. Two different aspect ratios and three different internal loading cases were taken into account for the parametric study to demonstrate their influences on dynamic overpressures and equivalent base shear forces in RC-grouped silos. It is concluded that designing the on-ground slender grouped silos with a high aspect ratio as individual single silos is unreasonable and may produce very low values for the base shear force.

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“…Therefore, there must be significant difference in seismic response between single silo and grouped silos. With regards to the single silo, most investigations in dynamic response, especially in seismic response, were experimentally performed by means of vibration or shaking table test of scaled model 5,7,9,13,14,17 . The in‐situ silo experiment is only confined to the single steel silo 6 .…”

Section: Introductionmentioning

confidence: 99%

Seismic analysis on reinforced concrete group silos through shaking table tests

Zhang

Liu

2020

Structural Concrete

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The main objective of this research is to explore the seismic performance of the group silos through the shaking table tests and the finite element analysis. The 1/16 scaled model of reinforced concrete silos supported by supporting wall was designed and constructed. The shaking table tests were carried out with gradually increasing table‐input acceleration amplitudes. The dynamic characteristics, seismic responses, cracking patterns and failure mechanism of the model under empty and full conditions were analyzed. The finite element model was established and verified by experimental results. This article is aimed to provide guide for engineering design of group silos.

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Experimental Study on Dynamic Effective Mass of Cylindrical Silos for Storing Granular Materials

Cited by 3 publications

References 0 publications

Fragility Curves for Steel Industrial Silos Accounting for Filling Level of Granular-Like Material

Fragility Curves for Steel Industrial Silos Accounting for Filling Level of Granular-Like Material

The behavior of the RC grouped silos under earthquake excitation according to different internal loadings

Seismic analysis on reinforced concrete group silos through shaking table tests

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