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Buildings 2017, 7(3), 61;

Analysis of Cylindrical Granular Material Silos under Seismic Excitation

SDA-Engineering GmbH, Kaiserstraße 100, TPH III/B, 52134 Herzogenrath, Germany
CH-Ingenieure GbR, Charlottenburger Allee 41, 52078 Aachen, Germany
Author to whom correspondence should be addressed.
Received: 27 March 2017 / Revised: 28 June 2017 / Accepted: 2 July 2017 / Published: 6 July 2017
(This article belongs to the Special Issue Traditional and Innovative Approaches in Seismic Design)
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Silos generally work as storage structures between supply and demand for various goods, and their structural safety has long been of interest to the civil engineering profession. This is especially true for dynamically loaded silos, e.g., in case of seismic excitation. Particularly thin-walled cylindrical silos are highly vulnerable to seismic induced pressures, which can cause critical buckling phenomena of the silo shell. The analysis of silos can be carried out in two different ways. In the first, the seismic loading is modeled through statically equivalent loads acting on the shell. Alternatively, a time history analysis might be carried out, in which nonlinear phenomena due to the filling as well as the interaction between the shell and the granular material are taken into account. The paper presents a comparison of these approaches. The model used for the nonlinear time history analysis considers the granular material by means of the intergranular strain approach for hypoplasticity theory. The interaction effects between the granular material and the shell is represented by contact elements. Additionally, soil–structure interaction effects are taken into account. View Full-Text
Keywords: granular silo; earthquake engineering; nonlinear transient analyses; nonlinear interaction effects; hypoplasticity; static equivalent load granular silo; earthquake engineering; nonlinear transient analyses; nonlinear interaction effects; hypoplasticity; static equivalent load

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Butenweg, C.; Rosin, J.; Holler, S. Analysis of Cylindrical Granular Material Silos under Seismic Excitation. Buildings 2017, 7, 61.

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