Tragverhalten von CoSFB-Dübeln

in Stahlbau (2019), 88(2019)(Heft 7),

Slim-floor or shallow floor construction is characterized by the integration of a steel beam into a slab. The activation of a composite action between the steel section and the concrete slab leads to a ... [more ▼]

Slim-floor or shallow floor construction is characterized by the integration of a steel beam into a slab. The activation of a composite action between the steel section and the concrete slab leads to a significant increase of the bending capacity and the stiffness of the beam, allowing for larger beam spans. This paper presents a fundamentally new method for assessing the load-bearing capacity of CoSFB-Dowels, which ensures a composite action of a composite slim-floor beam (CoSFB). Based on detailed analysis of push-out tests, extensive numerical simulations were performed in order to identify the contribution of various parameters on the load-bearing capacity. Finally, an analytical formulation of the load-bearing capacity is presented, which has been derived by applying a simple second order plasticity approach. [less ▲]

Chancen und Herausforderungen für Stahl-Verbundkonstruktionen im modernen Geschossbau

in Stahlbau (2019), 88(7),

Aus dem Trend der Urbanisierung und dem Anstieg von Investitionen in den Wirtschaftszentren Europas resultiert ein rasantes Wachstum. Damit einher geht eine immense Nachfrage nach entsprechenden ... [more ▼]

Aus dem Trend der Urbanisierung und dem Anstieg von Investitionen in den Wirtschaftszentren Europas resultiert ein rasantes Wachstum. Damit einher geht eine immense Nachfrage nach entsprechenden Nutzflächen sowie der zugehörigen Infrastruktur. In den großen Ballungsgebieten, den Hotspots der Wirtschaft, wird der Bedarf an Mehrgeschossbauten und Hochhäusern stark ansteigen.Dabei stellen sich neue Herausforderungen. Die Bauindustrie muss sich mit zukunftsorientierten Bauweisen unter Einbeziehung des Klimaschutzes und insbesondere der Ressourceneffizienz ernsthaft auseinandersetzen und neue Ansätze jenseits traditioneller Bauweisen finden. Da ca. 33 % des gesamten Rohstoffverbrauchs mit der Bauwirtschaft verbunden sind, müssen nachhaltige, effiziente und marktfähige Bautechnologien in den Fokus gerückt werden. Darüber hinaus gewinnt die Optimierung der Baustellenorganisation und Logistik sowie industrieller Vorfertigung vermehrt an Bedeutung... [less ▲]

Eine innovative Stahlverbundlösung für komplexe innerstädtische Bauprojekte

in Stahlbau (2016), 04/16

The real estate project KONS encountered a two and a half year process of demolition of an existing building and construction of a new building complex in a central, urban location of Luxembourg City ... [more ▼]

The real estate project KONS encountered a two and a half year process of demolition of an existing building and construction of a new building complex in a central, urban location of Luxembourg City opposite of the main railway station. Thereby the ambitious specifications of the investor as well as the requirements of the local authorities could be met only through a comprehensive and intelligent planning process. The complex interrelation between logistics and construction management processes, detailing and overall economic assessment found the solution of steel-composite design highly performant and efficient in every aspect. [less ▲]

Analyses of the loadbearing behaviour of deep-embedded concrete dowels, CoSFB

in Steel Construction (2015), 8(3), 167-173

The development of the “CoSFB-Betondübel” is presented in this paper. The “CoSFB-Betondübel” is a deep-embedded concrete dowel connecting in situ concrete with a steel section to assure composite action ... [more ▼]

The development of the “CoSFB-Betondübel” is presented in this paper. The “CoSFB-Betondübel” is a deep-embedded concrete dowel connecting in situ concrete with a steel section to assure composite action and thus allow for composite beam design. The loadbearing behaviour and parameters influencing this behaviour were determined through experimental tests. Special focus was given to the influence of the ratio of the resistance of the concrete dowel to the concrete compression class. The evaluation of the results concluded in a National Technical Approval [1]. Further investigations were performed via FE analysis in ABAQUS. Further, 3D models with non-linear material and geometry were prepared and validation undertaken. In addition, a real application example of CoSFB is shown. [less ▲]

Innovative conception and design of structural systems for flexible floor spaces

in ICSA2013 - Conference book (2013, July)

The pressure in the market of high-rise and multistory office buildings is stimulating innovative solutions for the design of structural systems fulfilling the demand for flexible, sustainable floor ... [more ▼]

The pressure in the market of high-rise and multistory office buildings is stimulating innovative solutions for the design of structural systems fulfilling the demand for flexible, sustainable floor layouts. Steel-concrete composite constructions do comply with related challenges. They offer a wide range of structural solutions to design economic, efficient and sustainable buildings. New composite slabs with sheets of up to 220 mm height are able to span up to 9 m without any intermediate support. These sheets can further be placed on the lower flange of the steel beam to reduce the slab thickness in order to build a "Slim-Floor System". By activating composite action for slim-floor beams due to recent innovations grid spans of about 10 x 14 m are enabled, permitting a huge flexibility in the architectural floor layout. Further the design of composite connection provides significant potential for structural optimization. This potential is outlined and design guidance for simplified and sustainable composite design is given. [less ▲]