Apostolidi, Eftychia (2019)
Innovative Concrete Composite Planar Systems Reinforced with Perforated Steel Sheets.
Universität für Bodenkultur Wien, Department für Bautechnik und Naturgefahren, Institut für konstruktiven Ingenieurbau (IKI)
Dissertation, Bibliographie
Kurzbeschreibung (Abstract)
In planar composite concrete elements, such as slabs and walls, bi-directional bar reinforcement is applied to enhance the biaxial load bearing capacity of the structural element. The current dissertation deals with the development, optimisation and assessment of an innovative steel reinforcement in the form of a sheet with perforations that could replace the classic reinforcement bar layout in planar concrete elements e.g. in concrete slabs. In particular, a multi-level optimisation process including material and geometrical parameters of such an innovative reinforcement type is presented and discussed. Geometrical parameters, such as the shape, size and location of perforations were considered for optimisation, along with the thickness of the steel sheet and the inclination angle and height of the area around the perforations, which was decided to be bulged, for the achievement of a more efficient bond between the steel sheet and the concrete. Several series of numerical analyses, biaxial tensile tests on plain sheets and small-scale composite specimens, 3-point bending tests on small-scale composite specimens and 4-point bending tests on full-scale specimens were performed for the verification of the optimised parameters. Furthermore, the steel sheet to concrete bond was investigated through series of pull-out tests and 3D numerical models. Finally, the crucial structural concrete element formed within the inclined perforations of the steel sheet was investigated through parametrical 3D numerical studies under the assumption that it mechanically performs as a corbel. The target of this dissertation is to propose a steel sheet layout that has the potential to replace conventional bar reinforcement in reinforced concrete slabs, followed by suggestions for further optimisation possibilities.
Typ des Eintrags: | Dissertation | ||||
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Erschienen: | 2019 | ||||
Autor(en): | Apostolidi, Eftychia | ||||
Art des Eintrags: | Bibliographie | ||||
Titel: | Innovative Concrete Composite Planar Systems Reinforced with Perforated Steel Sheets | ||||
Sprache: | Englisch | ||||
Referenten: | Strauss, Assoc.Prof Alfred ; Bergmeister, Prof. Konrad ; Hofmann, Prof. Jan | ||||
Publikationsjahr: | Dezember 2019 | ||||
Ort: | Wien | ||||
Datum der mündlichen Prüfung: | 21 Januar 2020 | ||||
URL / URN: | https://permalink.obvsg.at/bok/AC15614256 | ||||
Kurzbeschreibung (Abstract): | In planar composite concrete elements, such as slabs and walls, bi-directional bar reinforcement is applied to enhance the biaxial load bearing capacity of the structural element. The current dissertation deals with the development, optimisation and assessment of an innovative steel reinforcement in the form of a sheet with perforations that could replace the classic reinforcement bar layout in planar concrete elements e.g. in concrete slabs. In particular, a multi-level optimisation process including material and geometrical parameters of such an innovative reinforcement type is presented and discussed. Geometrical parameters, such as the shape, size and location of perforations were considered for optimisation, along with the thickness of the steel sheet and the inclination angle and height of the area around the perforations, which was decided to be bulged, for the achievement of a more efficient bond between the steel sheet and the concrete. Several series of numerical analyses, biaxial tensile tests on plain sheets and small-scale composite specimens, 3-point bending tests on small-scale composite specimens and 4-point bending tests on full-scale specimens were performed for the verification of the optimised parameters. Furthermore, the steel sheet to concrete bond was investigated through series of pull-out tests and 3D numerical models. Finally, the crucial structural concrete element formed within the inclined perforations of the steel sheet was investigated through parametrical 3D numerical studies under the assumption that it mechanically performs as a corbel. The target of this dissertation is to propose a steel sheet layout that has the potential to replace conventional bar reinforcement in reinforced concrete slabs, followed by suggestions for further optimisation possibilities. |
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Alternatives oder übersetztes Abstract: |
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ID-Nummer: | D-21518 | ||||
Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Statik und Konstruktion 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Statik und Konstruktion > Fachgebiet Statik |
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Hinterlegungsdatum: | 29 Okt 2020 06:14 | ||||
Letzte Änderung: | 29 Okt 2020 06:14 | ||||
PPN: | |||||
Referenten: | Strauss, Assoc.Prof Alfred ; Bergmeister, Prof. Konrad ; Hofmann, Prof. Jan | ||||
Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 21 Januar 2020 | ||||
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