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Author
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Fabian Böttinger
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University
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Coburg University of Applied Sciences, Germany |
Several exemplary scenarios are shown, for which the conventional design according to the theory of rigid composite is no longer applicable. In order to be able to carry out the design of such systems, several methods are presented in the course of this thesis, five of which are described in detail. Among others, these include the gamma method according to DIN 1052, the shear analogy method according to Kreuzinger, and the framework method according to Rautenstrauch.
The focus in the elaborations of these individual methods was placed in particular on the calculation of flexural beams using computer-aided methods. It provides the necessary knowledge that is required for modeling within any structural frame analysis program. A systematic overview of the advantages and disadvantages of the individual calculation methods is provided by assessing the practical suitability of the methods on the basis of the modeling and calculation effort as well as the respective application limits. This makes it easier for practicing engineers to determine a suitable method for an individual problem or project.
An Excel spreadsheet developed within the scope of this thesis also provides the possibility of pre-dimensioning the individual components of a composite beam as well as the design according to the theory of the gamma method given by DIN 1052. Furthermore, it supports the user in determining the input parameters of the other methods required for modeling within the structural analysis software.
The final comparison confronts the result deviations of the individual methods on the basis of a timber-concrete composite (TCC) slab. This clarifies the question of whether the additional effort of certain methods is worthwhile due to a possibly lower calculated load-bearing capacity in the ultimate limit state and the serviceability limit state.