A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Unpropped large span floor
The main aim of this research is to increase the share of steel in multi-storey buildings by the development of a new type of slim floor construction that may constitute an alternative system to existing ones. The developed floor system is an assembly of encased steel main beams, reinforced concrete secondary beams and a composite slab with current steel deck. In addition, cold formed Z sections are used to suppress props in the construction stage. Many aspects are studied and experimentally verified in this project; in particular, the composite action by bond between steel and concrete, the association between reinforced concrete elements and steel, and the fire resistance of each component and for the global system (two simply supported beams of 7 m span and a floor of 6x7 m are tested). Another important aspect is considered in this research, that concerns the development of a particular type of beam-to-column joint that allows the concreting of two storeys (floors and columns) in one operation and to have sufficient stiffness to allow a significant reduction of vertical bracing. As for the floor system beam-to-column joints are tested at room temperature and under fire conditions (four full scale beam-to-column joints). Finally, the main conclusions from this project concern the feasibility and the 'buildability' of the system and the possibility of applying Eurocode standards for the design of different components.
Unpropped large span floor
The main aim of this research is to increase the share of steel in multi-storey buildings by the development of a new type of slim floor construction that may constitute an alternative system to existing ones. The developed floor system is an assembly of encased steel main beams, reinforced concrete secondary beams and a composite slab with current steel deck. In addition, cold formed Z sections are used to suppress props in the construction stage. Many aspects are studied and experimentally verified in this project; in particular, the composite action by bond between steel and concrete, the association between reinforced concrete elements and steel, and the fire resistance of each component and for the global system (two simply supported beams of 7 m span and a floor of 6x7 m are tested). Another important aspect is considered in this research, that concerns the development of a particular type of beam-to-column joint that allows the concreting of two storeys (floors and columns) in one operation and to have sufficient stiffness to allow a significant reduction of vertical bracing. As for the floor system beam-to-column joints are tested at room temperature and under fire conditions (four full scale beam-to-column joints). Finally, the main conclusions from this project concern the feasibility and the 'buildability' of the system and the possibility of applying Eurocode standards for the design of different components.
Unpropped large span floor
Nichtgestützte weite Balkendecken
Chabrolin, B. (author) / Bitar, D. (author)
1998
166 Seiten, 141 Bilder, 10 Tabellen, 22 Quellen
Report
English
Unpropped large span floor : final report
| UB Braunschweig | 1998
Unpropped large span floor : final report
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