References of "Schäfer, Markus 50002991"
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See detailComparison of design for composite beams in steel and concrete according to Eurocode 4 and Chinese Design Codes
Zhang, Qingjie UL; Schäfer, Markus UL

in XI Conference on Steel and Composite Construction (2017, November 23)

Parallel to the investigation in the second generation of Eurocodes, the Chinese design standards are also updated. At 01/12/2016, a new Chinese Code for the design of composite structures JGJ138-2016 was ... [more ▼]

Parallel to the investigation in the second generation of Eurocodes, the Chinese design standards are also updated. At 01/12/2016, a new Chinese Code for the design of composite structures JGJ138-2016 was put in practice to replace the old JGJ138-2001. Benefit from the vast experience of composite structure applications blooming recently in Chinese, the new code covers much wider topics and is more comparable to Eurocodes 4. Generally, both codes cover topics of composite beams and columns, composite slabs and composite connections. However, JGJ138-2016 covers also the design of composite shear walls, while Eurocode 4 considers more about durability and time effects. It is necessary to compare the materials used for both of codes. In this article, it covers comparison of the mechanic properties such as elastic modulus, characteristic strength and design strength. The analysis includes concrete, reinforcement, and structural steel. The main comparison is the design procedure of composite columns. The application range of the codes will be pointed out first. Both codes allow the design of concrete encased sections and concrete filled rectangular and circular tubes. However different limitations on cross-section sizes and materials can be found. Eurocode 4 represents three different design methods: the simplified method for centric loading, based on the buckling curves; the general method based on 2nd order calculation for action effects and N-M interaction for the determination of resistances; as well as the non-linear method based on stress-strain limitation of material and FE-Analysis. Chinese code gives a simplified method of the calculation of column resistance for centric and eccentric loading. Also the impact of second-order effect are to proof if needed. According to the EN1994-1-1 the impact of creep is to consider for the denervation of the bending stiffness and for ideal buckling resistance and non-dimensional slenderness. JGJ138-2016 do not consider impact of creep for the design. Besides, JGJ138-2016 includes also design for seismic situation. The axial cross-section resistance and normal force-moment interaction curves (N-M curves) will be compared through theoretical analysis and parameter studies. JGJ138-2016 considers mainly transversal shear resistances, while Eurocode 4 further considers shear connection, load introduction and longitudinal shear outside the areas of load introduction. The design shear resistance will be compared in general and within parameter study. [less ▲]

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See detailCEN/TC250/SC4.T1: Second Generation of Eurocode 4: Introduction and Amendments to Final Draft October 2017
Banfi, Mike; Mensinger, Martin; Schäfer, Markus UL et al

Report (2017)

Development of second Generation of Eurocode 4, Projectteam CEN/TC250/SC4/T1, Reports for final Draft October 2017

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See detailLimits of plastic design for composite beams
Schäfer, Markus UL

in Eurosteel 2017 (2017, September 13)

Due to the demand for sustainable constructions, composite structures become more important and lead to slim and economic solutions. The determination of moment resistance for composite beams follows the ... [more ▼]

Due to the demand for sustainable constructions, composite structures become more important and lead to slim and economic solutions. The determination of moment resistance for composite beams follows the rules for composite structures according to EN 1994-1-1. For the plastic design it is still assumed, that each cross-sectional fibre can plastify without any limitation of strains. For normal composite beams in case of sagging moments and a high-lying plastic neutral axis, the real moment resistance is slightly higher than the plastic resistance. This is based on the large strains at the bottom side of the section, so that the lower steel flange reaches the solidification range. In case of sections with a large compression zone height xpl, a concrete failure in the compression zone can happen before reaching the plastic moment resistance. In these cases a strain limit design, based on the strain-stress relationships of concrete and steel, becomes decisive. EN 1994-1-1 provides only for cross-sections of classes 1 and 2 in steel grades S420 and S460 a limitation of plastic design. It is to point out, that the rotation capacity of a composite section is not only conditioned by the b/t ratio of the steel section, but also the concrete part has a significant impact. This applies not only for high steel grades. Though, in Eurocode 4 there are no further regulations given for sections with lower steel grades. Especially, the more and more upcoming integrated and compact composite sections underline the importance of such requirements. Therefore, the objective of the recent research is concentrated on the development of additional regulations, to consider the influence of concrete compression zone height onto the moment resistance of composite beams. [less ▲]

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See detailReview of plastic moment resistance for compsite beams - Development of second generation of Eurocode 4
Schäfer, Markus UL

in Leon, Roberto (Ed.) 8th International Conference on Composie Structures in Steel and Concrete (2017, July 30)

Due to the demand for sustainable buildings and slim constructions, composite slim-floor systems become more important. The present European Codes do not include complete de-sign rules for shallow-floor ... [more ▼]

Due to the demand for sustainable buildings and slim constructions, composite slim-floor systems become more important. The present European Codes do not include complete de-sign rules for shallow-floor beams. Therefore, the objective of the recent research work was concentrated on the development of additional regulations, considering ultimate limit state, serviceability limit state and fire design. Apart from traditional sections consisting of rolled profiles also floor-slabs with integrated steel-box-sections have been considered [less ▲]

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See detailEntwicklung der Bemessung nach EC4 im Stahlverbundbau
Schäfer, Markus UL

Scientific Conference (2017, May 10)

Die Eurocodes (EC) repräsentieren europäische Normen (EN) für die Bemessung und Konstruktion von Bauwerken im Hoch- und Brückenbau. Die Entwicklung dieser europäischen Regelwerke erfolgte im Auftrag der ... [more ▼]

Die Eurocodes (EC) repräsentieren europäische Normen (EN) für die Bemessung und Konstruktion von Bauwerken im Hoch- und Brückenbau. Die Entwicklung dieser europäischen Regelwerke erfolgte im Auftrag der Europäischen Union durch das „European Committee for Standardisation“ CEN. Seit einigen Jahren sind die Eurocodes bereits in der Anwendung. Basierend auf diesen Erfahrungen und vielfachen Kommentaren aus der Industrie erfolgt derzeit eine Überarbeitung aller Teile des Eurocodes mit dem Ziel, die aktuellen Bemessungsnormen an den Stand der Technik und Forschung anzupassen, die Anwendung zu vereinfachen sowie die Eurocodes untereinander zu harmonisieren. Abschließend werden diese Modifikationen in die zweite Generation der europäischen Normen überführt. In den folgenden Ausführungen wird die Arbeit des Projekt-Teams SC4.T1 vorgestellt. Es wird ein Einblick in die bestehende Normungsarbeit und die fachlichen Diskussionen eröffnet sowie auszugsweise die Entwürfe zu den anstehenden Änderungen der EN 1994-1-1 vorgestellt. [less ▲]

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See detailBericht zur Tätigkeit des Projectteams CEN/TC250/SC4.T1 - Neuerungen zur Bemessung im Verbundbau
Schäfer, Markus UL

Presentation (2017, May 08)

Expectable changes in Design of Composite Structures, Development of Second Generation of Eurocode 4, Report about work of SC4.T1

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See detailCEN/TC250/SC4.T1: Second Generation of Eurocode 4: Introduction and Amendments to Second Draft April 2017
Banfi, Mike; Mensinger, Martin; Schäfer, Markus UL et al

Report (2017)

Development of second Generation of Eurocode 4, Projectteam CEN/TC250/SC4/T1, Reports for second Draft April 2017

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See detailBackground Report to EN 1994 - Plastic moment resistance of composite beams
Schäfer, Markus UL; Banfi, Mike

Report (2017)

As part of the development of the second generation of Eurocodes and harmonization of the different European Codes, some clarifications deal with the design value of concrete compression strength and the ... [more ▼]

As part of the development of the second generation of Eurocodes and harmonization of the different European Codes, some clarifications deal with the design value of concrete compression strength and the bending design of steel-composite sections. The following background document describes the issues in design and confusions between Eurocode 2 for the design of concrete structures and Eurocode 4 for the design of composite structures in steel and concrete. The first part is concentrated on the background information and the accentuation of limits for plastic bending design. While the second part represents the results of multiple comparisons between plastic and strain limited design leading to a new design approach. [less ▲]

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See detailStahlverbundkonstruktionen im Hochbau - Entwicklungen in der Normung
Schäfer, Markus UL

Scientific Conference (2017, March)

Die Eurocodes (EC) repräsentieren europäische Normen (EN) für die Bemessung und Konstruktion von Bauwerken im Hoch- und Brückenbau. Die Entwicklung dieser europäischen Regelwerke erfolgte im Auftrag der ... [more ▼]

Die Eurocodes (EC) repräsentieren europäische Normen (EN) für die Bemessung und Konstruktion von Bauwerken im Hoch- und Brückenbau. Die Entwicklung dieser europäischen Regelwerke erfolgte im Auftrag der Europäischen Union durch das „European Committee for Standardisation“ CEN. Seit einigen Jahren sind die Eurocodes bereits in der Anwendung. Basierend auf diesen Erfahrungen und vielfachen Kommentaren aus der Industrie erfolgt derzeit eine Überarbeitung aller Teile des Eurocodes mit dem Ziel, die aktuellen Bemessungsnormen an den Stand der Technik und Forschung anzupassen, die Anwendung zu vereinfachen sowie der Harmonisierung der Eurocodes untereinander. Abschließend werden diese Modifikationen in die zweite Generation der europäischen Normen überführt. In den folgenden Ausführungen wird die Arbeit des Projektteams SC4.T1 vorgestellt. Es wird ein Einblick in die bestehende Normungsarbeit und die fachlichen Diskussionen gegeben sowie auszugsweise die Entwürfe zu den anstehenden Änderungen der EN 1994-1-1 vorgestellt. [less ▲]

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See detailEffiziente Gebäudelösungen in Stahl- und Verbundbauweise - eine Alternative für innerstädtische Projekte
Schäfer, Markus UL

Scientific Conference (2017, January 16)

Composite Structures in steel and concrete allow economic and sustainable building solutions. By a holistic approach, different construction methods are compared and show the advantage of composite ... [more ▼]

Composite Structures in steel and concrete allow economic and sustainable building solutions. By a holistic approach, different construction methods are compared and show the advantage of composite structures in point view of economy, construction side logistics and sustainability. [less ▲]

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See detailSymbiose aus Stahl und Stein - innovative Lösungen
Schäfer, Markus UL; Braun, Matthias; Radermacher, Christoph et al

in Revue Technique Luxembourgeoise (2016), 04/2016

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See detailEine innovative Stahlverbundlösung für komplexe innerstädtische Bauprojekte
Schäfer, Markus UL; Radermacher, Christoph; Braun, Matthias et al

in Stahlbau Nachrichten (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 ▲]

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See detailSymbiose aus Stahl und Stein
Schäfer, Markus UL; Radermacher, Christoph; Braun, Matthias et al

in Stahlbau (2016), Stahlbau 85(Heft 10), 659-669

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 ▲]

Detailed reference viewed: 27 (10 UL)
See detailCEN/TC250/SC4.T1: Second Generation of Eurocode 4: Assessment of Nationally Determined Parameters in EN 1994
Banfi, Mike; Mensinger, Martin; Ortega, Miguel et al

Report (2016)

Development of second Generation of Eurocode 4, Projectteam CEN/TC250/SC4/T1, Assessment of Nationally Determined Parameters in EN 1994

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See detailCEN/TC250/SC4.T1:Assessment of the systematic review for Eurocode 4 by Projectteam SC4.T1
Banfi, Mike; Mensinger, Martin; Schäfer, Markus UL et al

Report (2016)

Development of second Generation of Eurocode 4, Projetcteam CEN/TC250/SC4/T1, Comments and Assemenent of review from Industries to EN 1994-1-1, EN 1994-1-2, EN 1994-2

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See detailConstruction du Centre de Remisage et de Maintenance de la gare de Luxembourg
Schäfer, Markus UL; Riedinger, Julien

Scientific Conference (2015, November 11)

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See detailDes bâtiments en construction mixte acier-béton: Une alternative pour les entreprises générales de construction
Schäfer, Markus UL

Scientific Conference (2015, November 11)

Sustainable and resource-efficiency multi-storey buildings based on composite structures offer many advantages in life cycle assessment for a building. But also many chances for the general contractor.

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See detailDesign rules for slim-floor girders considering the composite behaviour
Schäfer, Markus UL

in Mäkinen, Jari (Ed.) The 13th Nordic Steel Conference (NSCC-2015) (2015, September 23)

Due to the demand for sustainable buildings and slim constructions, composite slim-floor systems become more important. The present European Codes do not include complete design rules for shallow-floor ... [more ▼]

Due to the demand for sustainable buildings and slim constructions, composite slim-floor systems become more important. The present European Codes do not include complete design rules for shallow-floor beams. Therefore, the objective of the recent research work was concentrated on the development of additional regulations, considering ultimate limit state, serviceability limit state and fire design. Apart from traditional sections consisting [less ▲]

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See detailSchubtragfähigkeit und M-V-Interaktion von Flachdecken mit integrierten hohlkastenförmigen Stahlprofilen
Schäfer, Markus UL

in Stahlbau (2015), Stahlbau 83(Heft 5), 314-323

Shallow-floor slabs with integrated steel profiles in composite behavior are mainly characterized by the slim design. Parallel to the traditional sections consisting of rolled profiles with an additional ... [more ▼]

Shallow-floor slabs with integrated steel profiles in composite behavior are mainly characterized by the slim design. Parallel to the traditional sections consisting of rolled profiles with an additional bottom plate also floor-slabs with integrated steel-box sections have gained widespread adoption in practice in the recent years. Because of the sheathing of the concrete by the steel section a hybrid truss model with a compression strut in the concrete section is developed, increasing the shear resistance of these sections. Due to the additional steel stresses resulting by the truss model, the relationship for the interaction between moment and vertical shear forces is to expand. [less ▲]

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See detailSchubtragfähigkeit und M-V Interaktion von Flachdecken mit integrierten hohlkastenförmigen Stahlprofilen - Ansatz eines hybriden Fachwerkmodells zur Querkraftbemessung
Schäfer, Markus UL

in Stahlbau (2015), 84. Jahrgang(Heft 4), 314-323

Shear resistance and M-V-Interaction of Slim-Floor-systems with integrated steel-box sections - Approach of a hybrid truss model for the shear design. Shallow-floor slabs with integrated steel profiles in ... [more ▼]

Shear resistance and M-V-Interaction of Slim-Floor-systems with integrated steel-box sections - Approach of a hybrid truss model for the shear design. Shallow-floor slabs with integrated steel profiles in composite behavior are mainly characterized by the slim design. Parallel to the traditional sections consisting of rolled profiles with an additional bottom plate also floor-slabs with integrated steel-box sections have gained widespread adoption in practice in the recent years. Because of the sheathing of the concrete by the steel section a hybrid truss model with a compression strut in the concrete section is developed, increasing the shear resistance of these sections. Due to the additional steel stresses resulting by the truss model, the relationship for the interaction between moment and vertical shear forces is to expand. [less ▲]

Detailed reference viewed: 34 (2 UL)