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Author(s):	Kuhnhenne, Markus; Brieden, Matthias; Ungermann, Dieter; Wiegand, Alexander
Title:
Abstract:	Das Forschungsprojekt “Bauen im Bestand - Lösungen für Dach und Fassade in Stahlleichtbauweise” untersucht Möglichkeiten, bestehende Dach- und Fassadensysteme in Stahlleicht- und massiver Bauweise mit Bausystemen des Stahlleichtbaus energetisch zu ertüchtigen. Als Sanierungsmaßnahmen werden dabei Stahl-Sandwichelemente und modulare Stahlleichtbaukonstruktionen, die beispielsweise aus Stahltragprofilen, Wärmedämmung und Stahlfeinblechprofilen bestehen, eingesetzt. Neben hygrothermisch-bauphysikalischen Untersuchungen werden auch statisch-mechanische Bewertungen der energetisch optimierten Bausysteme durchgeführt. Der vorliegende Beitrag stellt ausgewählte Ergebnisse vor, die innerhalb des Projektes erarbeitet wurden. Dabei wird die energetische Qualität von Bestandsfassaden in Stahlleichtbauweise diskutiert und es werden Einsparpotentiale im Bereich der Wärmetransmission aufgezeigt, die sich durch die Sanierung dieser Fassaden eröffnen. Des Weiteren werden einige der sich daraus ergebenden Fragestellungen hinsichtlich Tragverhalten und Lastannahmen thematisiert. Building redevelopment - Solutions for roof and façade using lightweight steel construction. The research project “Building redevelopment - Solutions for roof and façade using lightweight steel construction” investigates possibilities to improve energetically existing roof and façade systems in lightweight steel and massive construction by using lightweight steel systems. As refurbishment systems steel sandwich panels as well as modular lightweight steel constructions, consisting for example of steel supporting profiles, thermal insulation and steel sheet profiles, will be applied. Besides hygrothermal-building-physical studies also static-mechanical reviews for the energetically optimized building systems will be conducted. The present paper shows selected results that have been developed within the project. On the one hand, the energetic quality of existing façades in lightweight steel construction is shown, and savings potentials due to heat transmission, which are opened up by the renovation of these façades, are clarified. On the other hand, some of the resulting building-structural questions with regard to load-bearing behaviour and loadings are discussed.
Source:	Stahlbau 86 (2017), No. 10
Page/s:	862-872
Language of Publication:	German

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