02 Fakultät Bau- und Umweltingenieurwissenschaften

Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/3

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Author: search.filters.author.Haase, Walter

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    D1244: Design and construction of the first adaptive high-rise experimental building
    (2022) Blandini, Lucio; Haase, Walter; Weidner, Stefanie; Böhm, Michael; Burghardt, Timon; Roth, Daniel; Sawodny, Oliver; Sobek, Werner
    An interdisciplinary research team of the University of Stuttgart has been working extensively since 2017 on the development and integration of adaptive systems and technologies in order to provide solutions for a more sustainable built environment. An experimental 36.5 m tall high-rise building, called D1244, was designed and completed in 2021 to show the potential of adaptive structures and facades as well as to verify on a real scale the developed systems and the related numerical predictions. The building was designed to offer a flexible experimental platform: each component is dismountable so that structural as well as facades elements can be replaced with new ones introducing new functionalities to be investigated. The structure is currently equipped with twenty-four hydraulic actuators that are installed in the columns and diagonal bracers. Strain gauge sensors and an optical tracking system are employed to monitor the state of the structural system. This paper describes the design and construction of the adaptive tower as well as the preliminary experimental testing on different scaled structural prototypes. The research work on these prototypes provided relevant information for the final set-up of the high-rise building. An outlook on future research, including the planned first structural testing phase and the implementation of adaptive facade systems, is included at the end.
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    Adaptive Strahlungstransmission von Verglasungen mit Flüssigkristallen
    (2004) Haase, Walter; Sobek, Werner (Prof. Dr.-Ing.)
    Ziel der vorliegenden Arbeit war es zu untersuchen, ob und mit welchem Aufbau sich verdrillt-nematische Flüssigkristallzellen (zu englisch "twisted nematic",TN-Zellen) eignen, um als Licht- und Energiestrom regelnde Fensterelemente am Gebäude eingesetzt werden zu können. Es wurden hierzu Muster solcher TN-Zellen in diversen Aufbauten hergestellt, die Einwirkungen, resultierend aus der Bestrahlung auf ein solches Element qualitativ und quantitativ spezifiziert und die optischen Eigenschaften für ausgewählte Aufbauten der Funktionselemente charakterisiert. Versuche zur kurzzeitigen thermischen Belastung sowie Langzeit-Freilandversuche dienten zur Verifizierung der Schädigung der Funktionsschichten und der Elemente. Die Ergebnisse der Versuche waren Grundlage für die Auswahl geeigneter und langzeitstabiler Komponenten eines stufenlos schaltbaren Elementes.
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    Integration of LCA in the planning phases of adaptive buildings
    (2019) Schlegl, Friederike; Honold, Clemens; Leistner, Sophia; Albrecht, Stefan; Roth, Daniel; Haase, Walter; Leistner, Philip; Binz, Hansgeorg; Sobek, Werner
    The high consumption of resources in the building industry requires a significant reduction of material in buildings and consequently a reduction of emissions over all phases of the life cycle. This is the aim of the Collaborative Research Centre 1244 Adaptive Skins and Structures for the Built Environment of Tomorrow, funded by the German Research Foundation (DFG), which addresses research on the development and integration of adaptive systems in building structures and skins. New approaches in building planning are required for the implementation of adaptive buildings. Therefore, a multidisciplinary team from various fields such as architecture, civil and mechanical engineering, and system dynamics is necessary. The environmental impacts of the whole life cycle have to be considered for an integral planning process for adaptive buildings right from the beginning. For the integration of the Life Cycle Assessment (LCA), four temporal and content-related interfaces were identified in the planning process. Inputs and outputs of the LCA were defined for the relevant planning stages in order to enable the greatest possible benefit for the planners and to minimize the environmental impacts as far as possible. The result of the research work is a methodology that can be used in the future to reduce life cycle-related environmental impacts in the planning process of adaptive buildings (ReAdapt).