Experimental study on horizontal pressure of column-supported concrete group silos under earthquake force

Li, Xuesen; Ding, Ye; Liu, Qiang; Xu, Qikeng

doi:10.1080/13467581.2022.2160637

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…And they recommend considering the torsional effect with an increase factor of 1.15. Li et al [36] conducted an experimental study on determining dynamic horizontal pressure distribution along the height of an RC column-supported grouped silo and a single silo to provide a basis for improving the seismic design of the grouped silo structure. They indicate that the position of the silo cell is important and should be considered in the seismic design of RC column-supported grouped silos.…”

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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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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Seismic response of column‐supported silos considering granular–structure interaction

Chen,

Ding,

et al. 2024

Earthq Engng Struct Dyn

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To predict the seismic response of column‐supported silos (CSSs), the granular–structure interaction (GSI) analysis method is proposed with considering the combined effect of the friction between the particles–particles and the particles–silo wall. Using free‐body dynamic equilibrium equations, we reconstruct the mutual interactions between different grain portions and between the grains and the silo wall to develop the ideal calculation model of the CSS structure. Based on the analysis model, additional dynamic overpressure and the effective mass caused by the stored content interacting with the silo wall is obtained with different slenderness ratios and peak accelerations. The additional bending moment caused by the friction between the particles and silo wall is further quantified. To verify the reliability of the proposed method, we discuss some applicative examples by comparing the GSI method with other theories, Eurocode 8, and experimental results. Moreover, the along‐the‐height acceleration profiles of the silo wall and the ensiled content are analyzed according to the shaking‐table tests. The results show that the GSI method can match Janssen's theory well in the case of static pressure at slenderness ratios exceeding 1.0. The overpressure profiles along the height of the silo wall follow a nonlinear distribution, different from Eurocode 8. The bending moment obtained by predictive formulas agrees well with the experimental results for the CSS, indicating that the GSI method is reasonable. Some design and construction recommendations, including the maximum overpressure position, the reference range of the dynamic overpressure coefficient, and the reduction factors of the ensiled content mass, are proposed to facilitate the engineering applications of CSSs, considering different slenderness ratios.

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Study on the Calculation Method of Effective Mass of Column-Supported Silo under Earthquake Action

Ding,

Suo,

et al. 2024

KSCE J Civ Eng

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Experimental study on horizontal pressure of column-supported concrete group silos under earthquake force

Cited by 5 publications

References 4 publications

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

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

Seismic response of column‐supported silos considering granular–structure interaction

Study on the Calculation Method of Effective Mass of Column-Supported Silo under Earthquake Action

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