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Stabilization of the supporting structure by sandwich panels - Coupling with quasi-rigid supports. Coupling purlins and side rails prone to stability failure with quasi-rigid supports via sandwich panels leads to a distinct increase in shear stiffness. The determination of the additional part of the shear stiffness and the corresponding proofs for the connections are introduced and explained with an example. © 2013 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source


Durnberger D.,Kalzip GmbH | Huck G.,Ingenieurburo fur Leichtbau | Maas W.,BEMO SYSTEMS GmbH | Misiek T.,Breinlinger Ingenieure Tuttlingen Stuttgart
Stahlbau | Year: 2013

Design of fixed points of standing seam profiles on decking profiles. Roof thrust from the outer layer of a double-layer roof structures has to be introduced into the inner layer. Usually this is done at fixed points at the roof ridge. An outer layer of standing seam profiles attached to crests of the inner layer of trapezoidal sheeting at discrete points is a typical example. In this case, additional transverse bending moments occur. They sheeting panels are loaded with a line load transversely to the direction of span. Within the scope of a research program, investigations on the load-bearing capacity and deformation behavior of the sheeting panels of the inner layer were performed. The work resulted in the design and calculation approaches presented here. © 2013 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source


Kathage K.,Deutsches Institute For Bautechnik Dibt | Misiek T.,Breinlinger Ingenieure Tuttlingen Stuttgart
Stahlbau | Year: 2012

The paper deals with the design rules of Eurocode 3 part 1-11 for tension components at serviceability limit states. The paper covers rules for tension rods and tension rod systems as well as rules for wire ropes, bundles of parallel wires or strands. These rules are introduced and explained. If helpful and possible, a comparison with the rules of DIN 18800-1 is made. © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source


The paper presents and discusses the effects of the typical structural imperfections and inhomogeneities of the core on the elastic foundation. Both theoretical and numerical investigations were done to study their effect on the elastic critical buckling stress and on the compressive strength of the plane cross-section parts. Based on these investigations, extensions for the design model for the calculation of the load-bearing capacity were derived. The model with conclusive remarks is given in the paper. © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source


As a reaction to the implementation of Eurocodes by the building authority, the annexes of the Typenprüfungen (type approval) for trapezoidal sheeting were revised. The concept of verification and the basic proofs stayed the same, resulting in some small deviations from DIN EN 1993-1-3. Proofs for diaphragms and stressed skin design changed, merely resulting from new developments in the concept of verification and different requests of the different applicants. The paper at hand presents the revised annexes, justifies perpetuations for some rules and explains new and revised rules and proofs. © 2014 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. Source

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