Building acoustic analysis of doubly curved beam-like shell floors made of CFRP prestressed concrete and its integration into an interdisciplinary optimisation tool

  • An optimisation tool was developed to reduce the embodied carbon of floor systems. The considered system consists of a doubly curved beam-like shell made of carbon-fibre-reinforced polymer (CFRP) prestressed concrete and an infill layer. The thin-walled design of the system makes it susceptible to sound excitation. Therefore, the optimisation tool considers the static ultimate and serviceability limit states and the sound insulation aspect. Due to a lack of experience with the building acoustic properties of this floor system, it is, in practice, often simplified as a homogeneous floor. This paper aims to investigate its acoustic behaviour in more detail using numerical simulations and to integrate the gained knowledge into the optimisation tool. For this purpose, a simulation concept is set up and implemented. Simulations are carried out for different combinations of geometry and material parameters of the floor system. The data obtained is summarised into linear regression equationsAn optimisation tool was developed to reduce the embodied carbon of floor systems. The considered system consists of a doubly curved beam-like shell made of carbon-fibre-reinforced polymer (CFRP) prestressed concrete and an infill layer. The thin-walled design of the system makes it susceptible to sound excitation. Therefore, the optimisation tool considers the static ultimate and serviceability limit states and the sound insulation aspect. Due to a lack of experience with the building acoustic properties of this floor system, it is, in practice, often simplified as a homogeneous floor. This paper aims to investigate its acoustic behaviour in more detail using numerical simulations and to integrate the gained knowledge into the optimisation tool. For this purpose, a simulation concept is set up and implemented. Simulations are carried out for different combinations of geometry and material parameters of the floor system. The data obtained is summarised into linear regression equations that estimate the weighted airborne sound reduction index and the weighted equivalent normalised impact sound pressure level of the system. The optimisation results based on these equations show a clear difference compared to those based on the above-mentioned simplified approach.zeige mehrzeige weniger

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Autor*innen:Ahmad Eiz Eddin, P. Merz, M. Dombrowski, J. Loutfi, B. Zeitler
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings of the IASS 2024 Symposium: Redefining the Art of Structural Design
Jahr der Erstveröffentlichung:2024
Organisationseinheit der BAM:7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.3 Brandingenieurwesen
Verlag:International Association for Shell and Spatial Structures (IASS)
Verlagsort:Zürich, Schweiz
Erste Seite:2752
Letzte Seite:2761
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Airborne sound reduction index; Building acoustic simulation; CFRP; Doubly curved beam-like shells; Impact sound pressure level; Interdisciplinary optimisation
Themenfelder/Aktivitätsfelder der BAM:Infrastruktur
Infrastruktur / Leichtbau
Veranstaltung:IASS 2024 Annual Symposium: Redefining the Art of Structural Design
Veranstaltungsort:Zurich, Switzerland
Beginndatum der Veranstaltung:26.08.2024
Enddatum der Veranstaltung:30.08.2024
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:14.05.2025
Referierte Publikation:Nein
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