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• W105576192 abstract "The PCs corbel is a prefabricated beam-column connection produced by Peikko. Today the connection is only used in concrete columns where it has been proven to be a well functioning solution. Peikko wants to further develop the product by using it in a new context, together with a composite column, which in this case means a concrete filled steel tube. However, before modifying the PCs corbel and applying it in this type of column, research must be done. This master thesis focuses on how the load bearing capacity of the PCs corbel is affected by exposure to fire. Steel loses stiffness at relatively low temperatures and therefore when used in this kind of construction it must be investigated if the capacity of the system is high enough even at elevated temperatures. The aim of this thesis is therefore to study if the benefits of using the PCs corbel can be transferred to the new composite system. One main objective is to investigate the extent to which the column cross section affects the behavior of the connection at elevated temperatures. Two types of cross sections are analyzed: circular and rectangular. A finite element model was established in the software Abaqus, in this model both static and thermal simulations were performed. The thermal simulation ended in a temperature distribution after 60 minutes of fire and all material properties changed according to this. The following mechanical simulation uses these changed material properties in a static analysis to study the stress distribution in the connection and the surrounding structural elements. Bond slip between steel and concrete and the nonlinear behaviour of concrete are not taken into account. The simulations show that the cross section of the column is of minor importance in this study. Columns with circular and rectangular cross section, and with almost identical cross sectional area, were analyzed and the difference was found to be small enough not to be governing the fire design. As the temperature rises stress redistribution can be observed from the steel shell to the concrete core. It should be noted that this is a pre-study for further investigations according development of the PCs corbel, but from the results presented no reasons can be seen why this development should not continue." @default.
• W105576192 created "2016-06-24" @default.
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• W105576192 date "2011-01-01" @default.
• W105576192 modified "2023-09-28" @default.
• W105576192 title "FE-Analysis of a Beam-Column Connection in Composite Structures exposed to Fire" @default.
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• W105576192 hasPublicationYear "2011" @default.
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