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See detailBemessung von Verbundstützen – Update prEN 1994-1-1
Schäfer, Markus UL; Zhang, Qingjie UL; Bergmann, Marco

in Stahlbau (2021), 90(12), 903-912

The design of composite columns follows the rules in accordance to EN 1994-1-1 providing simplified design methods and the general method. Whereby the general method requires an advanced comprehensive FE ... [more ▼]

The design of composite columns follows the rules in accordance to EN 1994-1-1 providing simplified design methods and the general method. Whereby the general method requires an advanced comprehensive FE-Analysis. However, the recent Eurocode 4 does not provide sufficient guidance for the application of the general method and there is not a harmony in the literature on how to conduct it. This often leads to uncertainty among users and discussions on the validation and assessment of the analysis results. Actually, the draft of the second generation of Eurocode 4 (prEN 1994-1-1) is available, including more guidance but also introduces additional safety parameters and extends the application scope in regard to the martial strengths. This paper points out the procedure for the design of composite column with focus on the general method and changes provided by the draft of prEN 1994-1-1:2021. [less ▲]

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See detailNon-linear design for composite structures in steel and concrete in reference to Eurocode 4, Part 1-1
Schäfer, Markus UL; Zhang, Qingjie UL; Zogu, Pellumb UL et al

Learning material (2021)

The design of composite structures in steel and concrete for buildings follows the rules according to Eurocode 4: EN 1994-1-1. In the last years more and more individual composite members and cross ... [more ▼]

The design of composite structures in steel and concrete for buildings follows the rules according to Eurocode 4: EN 1994-1-1. In the last years more and more individual composite members and cross-section types have been developed. Those sections are not always fulfilling the requirements for the application of simplified design methods given by EN 1994-1-1 and therefore plastic resistance cannot always be applied. Furthermore there is an increasing demand for optimization in the design by using more advanced design methods. This optimization is concentrating on the use of individual shaped cross-sections and their efficiency, the composite shear connectors and consideration of their ductility and flexibility, investigation in the sequence of loading, time effects as well as concrete cracking and yielding of steel within the analysis. In addition it is to be mentioned that the draft for the second generation of Eurocode 4 provides more opportunities for advanced numerical methods. At least, the demand for more advanced numerical design methods is permanently increasing also due to the availability of powerful hardware and software applications. The target of this chapter is to introduce the advanced numerical design for composite structural members in steel and concrete and to explain the boundary conditions given by Eurocode 4 and related Eurocodes. Thereby the focus is more on the member and not on the global analysis. The computer-aided global analyses for the determination of action effects are well-known for years while the possibilities for nonlinear analysis based on shell and volume elements considering physical and geometrical nonlinearity becoming more important and will be further developed in future. However, there is not so much information available explaining the application of e.g. the general method in detail and guidance is missing by the code. Therefore the general method acc. to EN 1994-1-1/prEN1994-1-1 is the main focus of this contribution. In the following, some principles for the design according to EN 1994-1-1 are explained. Thereby the basics for the classification of cross-sections as well as the determination of inner forces for continuous beams will be pointed out. However, the focus is on the general method for the design of composite compression members. While in the case studies additional information for the structural analysis and the numerical investigation in composite beams is provided. This chapter will not repeat well-known explanations from the literature, which have been published many times but limits itself to the most important normative fundamentals, rather concentrate on the application of numerical methods for the design of composite structures. More details for global structural analysis and the design according to EN 1994-1-1 [1] are provided by the literature, e.g. [8], [40] and will not be further commented here. It should be noted that the here referred methods according to prEN 1994-1-1, prEN 1993-1-14 and prEN 1992-1-1 do not represent officially introduced design standards, until the introduction of the second generation of Eurocodes modification is not finalized. Therefore this references are to be understood as informative. Until the introduction of the second generation of Eurocodes further changes and adjustments may also to be expected. [less ▲]

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See detailEurocode 4 - DIN EN 1994-1-1 Bemessung und Konstruktion von Verbundtragwerken aus Stahl und Beton
Hanswille, Gerhard; Schäfer, Markus UL; Bergmann, Marco

Book published by Beuth - 1. Edition (2020)

Der Kommentar zu DIN EN 1994-1-1 richtet sich an alle Fachleute, die sich planend, bauend, prüfend oder überwachend mit der Bemessung, Konstruktion und Ausführung von Verbundtragwerken aus Stahl und Beton ... [more ▼]

Der Kommentar zu DIN EN 1994-1-1 richtet sich an alle Fachleute, die sich planend, bauend, prüfend oder überwachend mit der Bemessung, Konstruktion und Ausführung von Verbundtragwerken aus Stahl und Beton befassen. Er bietet eine Unterstützung bei der Auslegung und Anwendung der Norm in der Ingenieurpraxis. Besonderer Wert wird auf die Erläuterung der den Bemessungsregeln zugrunde liegenden mechanischen Modelle gelegt, um auch bei praktischen Fragestellungen, die nicht durch spezielle Anwendungsregeln im Eurocode 4 abgedeckt sind, eine sachgerechte Anwendung der Norm zu ermöglichen. Ergänzt wird das Buch durch eine Reihe typischer Beispiele aus dem Hochbau, sodass der Praktiker sich einfach und schnell in das Regelwerk einarbeiten kann. Darüber hinaus wird ein Einblick in den derzeitigen Diskussionsstand bei der Erarbeitung der Regelungen für die nächste Generation des Eurocode 4 gegeben und es wird auf wichtige, zu erwartende Änderungen und Ergänzungen hingewiesen. [less ▲]

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See detailVerbundtragwerke aus Stahl und Beton, Bemessung und Konstruktion - Kommentar zu DIN EN 1994-1-1
Hanswille, Gerhard; Schäfer, Markus UL; Bergmann, Marco

in Kuhlmann, Ulrike (Ed.) Stahlbaukalender 2018 (2018)

Design Guide and commentary for the design of composite structures in steel and concrete according to DIN EN 1994-1-1 with background information, mechanical theory and design examples

Detailed reference viewed: 120 (5 UL)
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See detailVerbundtragwerke aus Stahl und Beton - Bemessung und Konstruktion - Kommentar zur DIN 18800-5 Ausgabe März 2007
Hanswille, Gerhard; Schäfer, Markus UL; Bergmann, Marco

in Kuhlmann, Ulrike (Ed.) Stahlbau Kalender 2010 (2010)

Detailed reference viewed: 109 (4 UL)