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Abstract:	Die Luft- und Wasserdichtigkeit der Außenhülle spielen bei der Planung von modernen Gebäuden aufgrund der immer höheren Anforderungen im Hinblick auf die Energieeinsparung eine große Rolle. Für die Sandwichbauweise, die durch die im Werk vorgefertigten Elemente konstruktionsbedingt sehr viele Fugen enthält, ist daher die Ausbildung dieser Fugen von besonderer Bedeutung. In dem vorliegenden Bericht werden neben den normativen Vorgaben bezüglich der Fugendichtigkeit von Sandwichelementen auch die zugehörigen Laborprüfverfahren erläutert. Anschließend werden die Ergebnisse von experimentellen und numerischen Untersuchungen verschiedener Forschungsprojekte vorgestellt und daraus Schlussfolgerungen für die Herstellung und Montage von Sandwichelementen gezogen. Insgesamt lässt sich feststellen, dass mit der Sandwichbauweise bei Beachtung wichtiger Grundregeln in Fertigung und Montage sehr dichte Gebäudehüllen realisiert werden können. Tightness of sandwich constructions - Water and air tightness in longitudinal joints and window connection joints. The air and water tightness of the envelope play an important role in the planning of modern buildings due to the ever increasing requirements in terms of energy conservation. For sandwich structures, which contain many joints due to the prefabricated elements, the design of these joints is of particular interest. In addition to the normative specifications regarding the joint tightness of sandwich panels, this report also explains the associated laboratory test procedures. Subsequently, the results of experimental and numerical investigations of various research projects are presented and conclusions for the production and assembly of sandwich elements are shown. All in all, it can be stated that very tight building envelopes can be realized with sandwich panels while observing important basic rules in production and assembly.
Source:	Stahlbau 87 (2018), No. 7
Page/s:	687-694
Language of Publication:	German

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