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Abstract:	Derzeit entsteht in San Francisco (USA) der neue Hauptfirmensitz des Fahrdienstes Uber. Zentraler Bestandteil des Entwurfs sind zwei kubische, durch Brückenkonstruktionen miteinander verbundene, sechs- bzw. elfgeschossige Baukörper mit transparenter Gebäudehülle. Das Tragsystem der ca. 6 000 m2 großen Hauptfassade, die nicht als thermische Hülle dient, besteht aus Stahlträgern, die als Unterkonstruktion für Aluminiumelemente und Öffnungsflügel fungieren. Die große Herausforderung bei der Entwicklung und Planung der Außenhüllen bestand darin, anspruchsvolle Fassadensysteme mit hohen architektonischen Anforderungen sowie einer maximalen Transparenz auszulegen. Ebenso mussten bei der Entwicklung der Fassadenkonstruktion die aufgrund der geografischen Lage hohen seismischen Beanspruchungen und die daraus resultierenden Verformungen bzw. Kräfte berücksichtigt werden. Uber - Mission Bay Campus, San Francisco - special requirements regarding seismic safety of building envelopes The new headquarter of Uber is currently being built in San Francisco (USA). The central element of the design are two cubic six-story and eleven-story structures with a transparent building shell connected by bridge structures. The load bearing system of the approximately 6 000 m2 main façade which does not serve as a thermal shell consists of hanging steel girders that act as a substructure for aluminum elements and operable windows. While developing and planning the challenging façade system the major task was the implementation of high architectural demands to achieve a building envelope with a maximized transparency. The development of the façade structure also had to consider the extreme seismic stresses resulting from the geographical location as well as the resulting deformation and forces.
Source:	Stahlbau 89 (2020), No. 1
Page/s:	49-58
Language of Publication:	German

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