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Title:	Faltung von textilen Membranen bei wandelbaren Leichtbaukonstruktionen
Abstract:	Unlängst wurden zwei der weltweit größten wandelbaren Dächer fertig gestellt. Die faltbaren Dächer des Nationalstadions Warschau und BC Place in Vancouver sind beide nahezu 10000 m2 groß. Während das Stadion in Warschau mit einer mechanisch vorgespannten Membran realisiert wurde, erhielt das Stadion in Vancouver aufgrund der hohen Schneelasten pneumatisch stabilisierte Kissen. Im folgenden Bericht wird speziell auf die erforderlichen Materialeigenschaften für wandelbare Membrankonstruktionen eingegangen, da ein immer wiederkehrender Faltungsvorgang eine signifikante Beanspruchung für das Material und seine Beschichtung bedeutet. Anhand von neu entwickelten Testmethoden wird beschrieben, wie in Abhängigkeit des Entwurfes die passenden Materialien gewählt wurden. Folding of textile membranes in retractable lightweight structures Two of the largest retractable membrane roofs in the world were recently completed. The National Stadium in Warsaw and BC Place Stadium in Vancouver have retractable membrane portions each with sizes up to 10000 m2. The Stadium in Warsaw has a mechanically pre-stressed membrane while the structure in Vancouver uses inflated membrane cushions to withstand severe snow loading. In the following article required material properties for retractable membrane solutions will be discussed, since the repetitive folding of the membrane during the retraction puts significant demands to the textile material and its coating system. By means of especially developed testing methods it is described how the most suitable membrane material can be found, taken into account the concept design of the project.
Source:	Bautechnik 90 (2013), No. 4
Page/s:	231-239
Language of Publication:	German

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