A simplified approximation for seismic analysis of silo–bulk material system

In order to estimate the distribution, as well as the magnitude, of dynamic material pressures on ground-supported silos a simplified seismic analysis procedure was utilized. The seismic analysis of silos can be complex, as the evaluation of several parameters must be taken into consideration, inclu...

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Bibliographic Details
Published in:Bulletin of earthquake engineering 2016-03, Vol.14 (3), p.863-887
Main Authors: Livaoglu, R., Durmuş, A.
Format: Article
Language:English
Subjects:
Approximation
Building codes
Building materials
Civil Engineering
Dynamic tests
Dynamics
Earth and Environmental Science
Earth Sciences
Environmental Engineering/Biotechnology
Farm buildings
Finite element method
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Mathematical analysis
Mathematical models
Original Research Paper
Seismic analysis
Seismic engineering
Seismology
Silos
Structural Geology
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Summary:In order to estimate the distribution, as well as the magnitude, of dynamic material pressures on ground-supported silos a simplified seismic analysis procedure was utilized. The seismic analysis of silos can be complex, as the evaluation of several parameters must be taken into consideration, including the properties of bulk materials used and how the bulk materials and silo wall are joined together. It is therefore useful to develop an analytical approximation in order to better assess results. In addition to a simplified model for the seismic analysis of a silo–bulk material system being utilized, a three-dimensional finite element model was also incorporated. Using the finite element method, a more realistic representation of the structure is possible. Moreover, the finite element method also takes into consideration contact problems between the bulk material and the silo wall, which results in easier analyses. Both a squat and a slender silo were selected for this study. The results obtained in the study of selected examples were compared with those findings obtained via EN1998-4. Modified Veletsos and Younan approximations, which are commonly used for the analysis of grain silos, were also used. Results and analysis concluded that the proposed analytical model provided, overall, a good outcome, especially in regards to the analysis of dynamic material pressure. It should be noted that using the analytical method as proposed in Eurocode, the dynamic material pressure for squat silos can be underestimated, but the results for slender silos are stronger.
ISSN:1570-761X
1573-1456
DOI:10.1007/s10518-015-9851-x