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5th International Congress on Construction History Stahlbau 4/2015 274 Aktuell

Kurzfassung

Keine Kurzfassung verfügbar.

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Stranghöner, Natalie; Gorbachov , Anna Experimentelles Tragverhalten axialgedrückter Kreiszylinderschalen aus nichtrostenden ferritischen und Duplex-Stählen Stahlbau 4/2015 275-284 Fachthemen

Kurzfassung

Schalentragwerke aus nichtrostenden Stählen werden z. B. in Tankbauwerken und Biogasanlagen eingesetzt. Sie sind vollständig recycelbar, bedürfen keines Korrosionsschutzes und sind somit besonders wertvoll im Hinblick auf Umweltschutz und Umweltverträglichkeit. Die Bemessung dieser Schalen im Hinblick auf ihre Beultragfähigkeit ist allerdings nach den üblichen Regelwerken, wie DIN EN 1993-1-6, aufgrund des ausgeprägten nichtlinearen Spannungs-Dehnungs-Verhaltens der nichtrostenden Stähle nur begrenzt durchführbar. Aus diesem Grund wurden seinerzeit zusätzliche temperatur- und schlankheitsabhängige Beulreduktionsfaktoren für axialgedrückte Kreiszylinderschalen aus nichtrostenden austenitischen Stählen von Schmidt und Hautala entwickelt. Die Übertragbarkeit dieser Beulreduktionsfaktoren auf Schalentragwerke aus nichtrostenden ferritischen und Duplex-Stählen wird im Rahmen des europäischen RFCS-Forschungsvorhabens BiogaSS mit Hilfe von experimentellen, numerischen und theoretischen Untersuchungen überprüft. Die Ergebnisse sollen Eingang in die Überarbeitung der DIN EN 1993-1-6 finden.

Experimental load bearing behaviour of axially compressed cylinders made of ferritic and duplex stainless steels.
Shell structures made of stainless steels are used e. g. in tank structures and biogas plants. They are fully recyclable, do not need any corrosion protection and therefore, they are valuable in terms of environmental protection and environmental compatibility. However, the design of these shells with regard to their buckling resistance is limited according to DIN EN 1993-1-6 due to the non-linear stress-strain-behaviour of stainless steels. For this reason, additional temperature and slenderness dependent buckling strength reduction factors for axial loaded cylindrical shells made of austenitic stainless steels were already developed by Schmidt and Hautala. The transferability of these buckling strength reduction factors on shell structures made of ferritic and duplex stainless steels will be reviewed in the context of the European RFCS research project BiogaSS by means of experimental, numerical and theoretical studies. The results shall be incorporated in the revision of DIN EN 1993-1-6.

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Ball, Peter Einwirkungskombinationen für Flachbodentanks nach Eurocode - Beispiele (Teil 2) Stahlbau 4/2015 285-290 Fachthemen

Kurzfassung

Für den der Nachweis Standsicherheit von Flachbodentanks müssen Statiker und Hersteller insbesondere kombinierte Lasteinwirkungen zuverlässig ermitteln. Dazu zählen unter anderem Wind- oder Schneelasten genauso wie Verkehrslasten auf den Dächern oder Drücke und Sogwirkungen. Das Tragverhalten von Flachbodentanks ist aufgrund ihrer Konstruktion komplex. Die verschiedenen Einwirkungen werden zunächst individuell und dann in Kombination bestimmt, um wiederum ihre Auswirkungen auf das Bauwerk zu ermitteln. Die Herausforderung: Bautechnische Standsicherheitsnachweise sind mit Einführung des Eurocodes teilweise aufwändiger. Außerdem weichen dessen Regeln, um die Kombination von Lasten zu bestimmen, von jenen der DIN 18800 ab. Während der erste Teil dieses Beitrags [1] eine einheitliche Anwendung und ein praxisgerechtes, allgemein abgestimmtes Vorgehen diskutiert hat, stehen im zweiten Teil die Beispiele im Vordergrund.

Load combinations for flat-bottom storage tanks according to Eurocodes - Examples (part 2).
Structural engineers and manufacturers must produce reliable calculations, particularly of load combinations, to establish the structural integrity of flat-bottom storage tanks. Load types include for example wind or snow and live loads on tank roofs as well as pressure and suction. Given by the design and construction of flat-bottom tanks, their load-bearing characteristics are complex. The various load types must be determined, first individually and then in combination, before their impact on the structure can be calculated. The challenging nature of the task is exacerbated by the increased complexity of structural stability analyses that has accompanied the introduction of the Eurocode. In addition, the rules specified in the Code for the calculation of load combinations deviate from those in the DIN 18800 standard. The first part of the article [1] examined possibilities for uniform application and a practical procedure in line with general consensus, while the second section focuses on examples.

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Aus der Forschung: Stahlbau 4/2015 Stahlbau 4/2015 290-293 Aus der Forschung

Kurzfassung

Stahlleichtverbund-Bauweise - Entwicklung, Optimierung und wirtschaftlicher Einsatz im Bauwesen (P 757)
Effiziente Verbundflachdeckenträgersysteme im Hochbau - Ganzheitliche Optimierung für Montage und Nutzung (P 771)
Untersuchungen zur Herstellbarkeit von frei geformten Hüll- und Fassadenelementen als selbsttragende Struktur ohne Unterkonstruktion aus nichtrostendem Stahl mittels inkrementeller Blechumformung (P 846)
Symphonie im Stahl Stabile Stähle durch Duett atomarer und magnetischer Resonanzen

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Wagenknecht, Gerd Kranbahnen. Bemessung und konstruktive Gestaltung nach Eurocode. Von Ch. Seeßelberg Stahlbau 4/2015 293 Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Schmidt, Hartwig Von vorzüglicher Monumentalität. Georg Ludwig Friedrich Laves. Von Lavesstiftung (Hrsg.) Stahlbau 4/2015 293-295 Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Greiner-Mai, Doris Klaus-Jürgen Schneider verstorben Stahlbau 4/2015 295 Persönliches

Kurzfassung

Keine Kurzfassung verfügbar.

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Staeck, Klaus Akademie der Künste trauert um Frei Otto Stahlbau 4/2015 295-296 Persönliches

Kurzfassung

Keine Kurzfassung verfügbar.

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Fritz Leonhardt Preis 2015 an Werner Sobek Stahlbau 4/2015 296 Persönliches

Kurzfassung

Keine Kurzfassung verfügbar.

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Aktuell: Stahlbau 4/2015 Stahlbau 4/2015 296-298 Aktuell

Kurzfassung

Deutscher Brückenbaupreis 2016 ausgelobt
DVS/DIN-Workshop zur DIN EN ISO 9606-1
Hochbaukultur in Berlin - Tragwerke
Einsatz von libanesischen Ingenieuren in Baden-Württemberg

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Termine: Stahlbau 4/2015 Stahlbau 4/2015 298 Termine

Kurzfassung

Keine Kurzfassung verfügbar.

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Content: Steel Construction 4/2015 Steel Construction 4/2015 Content

Kurzfassung

Keine Kurzfassung verfügbar.

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Stranghöner, Natalie Tensile membrane structures Steel Construction 4/2015 221 Editorial

Kurzfassung

Keine Kurzfassung verfügbar.

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Uhlemann, Jörg; Stranghöner, Natalie; Saxe, Klaus Comparison of stiffness properties of common coated fabrics Steel Construction 4/2015 222-229 Articles

Kurzfassung

Woven coated fabrics commonly used for tensile membrane structures are PVC-coated polyester fabrics and PTFE-coated glass-fibre fabrics. Regarding the stiffness of these materials, membrane structure experts frequently point out that glass/PTFE fabrics are “stiffer” than PES/PVC fabrics. However, this statement cannot be verified by existing literature, although numerous publications deal with the stress-strain behaviour of coated woven fabrics. Available stress-strain test data are almost impossible to compare, mainly because published stress-strain data for glass/PTFE refer to materials with higher strengths than the published test data for PES/PVC materials. The aim of the present paper is to compare the stiffness properties of PES/PVC and glass/PTFE fabrics with identical tensile strength properties by means of theoretical investigations and uniaxial tensile tests. The results demonstrate that glass-fibre fabric indeed exhibits a higher tensile stiffness than comparable polyester fabric for typical working stress ranges between the prestress level and the maximum design strength. However, for lower stress ranges up to approximately three-quarters of the design strength, the tensile stiffness of glass-fibre fabrics is identical with or even lower than that of comparable polyester fabric. The transverse strain is considerably higher for the glass-fibre fabric throughout.

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The European Prize for Architecture 2015: Laureate Santiago Calatrava Steel Construction 4/2015 229 People

Kurzfassung

Keine Kurzfassung verfügbar.

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Stimpfle, Bernd The Nuvola for the Nuovo Centro Congressi in Rome Steel Construction 4/2015 230-236 Articles

Kurzfassung

In the EUR district, in the city of Rome, a complex membrane project is built, different from known tensile projects. In more than 10 years the idea of a light floating cloud inside the glazed congress centre has been developed, and is now going to be realized. This article describes the design process of shape and detail, different trial assemblies and it shows the final layout and the details.

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Göppert, Knut; Paech, Christoph High-performance materials in façade design - Structural membranes used in the building envelope Steel Construction 4/2015 237-243 Articles

Kurzfassung

Modern materials are used throughout large building envelopes of today’s and tomorrow’s architecture. Freedom in form combined with the growing selection of materials make this application very popular. Material properties are presented and discussed to allow the specialist engineer to make the right decision when consulting owners and architects. Basic considerations and requirements can take the form of a checklist to make sure that all involved in the design process have the full background and understanding of this process. The presented case studies show a variety of solutions, including some typical material combinations. Clients will be convinced by what they see, and the examples provide an opportunity to further develop the subject, starting from a good base and understanding. The examples cover all common materials and methods, including ETFE, glass-PTFE, PVC polyester, glass-PTFE mesh as well as multi-layer insulated systems.

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Gibson, Nick D. How to get a membrane structure off the drawing board Steel Construction 4/2015 244-250 Articles

Kurzfassung

This paper highlights the processes that are required to take a membrane structure from the design stage to final fabrication. Those processes involve determining the final geometry, developing an approved seam layout, undertaking material tests to determine stretch characteristics and issuing a final set of fabrication documents. The importance of each step is highlighted and the particular issues as they relate to membrane structures are presented. Particular note is made of the benefit that previous experience in this unique form of construction has in bringing a membrane structure to a successful completion. The paper concludes with a few examples of just what can be achieved when all the final stages of fabrication are carefully followed.

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6th Steelie Awards winners announced Steel Construction 4/2015 250 News

Kurzfassung

Keine Kurzfassung verfügbar.

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Mollaert, Marijke; De Laet, Lars; Pyl, Lincy; Devos, Rika The design of tensile surface structures - From a hand calculation in 1958 to a contemporary numerical simulation Steel Construction 4/2015 251-258 Articles

Kurzfassung

This paper summarizes the differences in the design approaches for tensile surface structures between the earliest structures in the 1950s and today’s practice. Current software tools allow more refined and advanced calculations. Nevertheless, a basic hand calculation can clarify the process in a few pages and provide the appropriate key data. A transparent setup allows the form-finding and structural analysis to be redone. The calculation of the cable net for the bandstand by André Paduart (1958) is analysed in this paper as a case study. Both the hand calculation (19 pages) and the numerical simulation are summarized and the design context of the initial and current calculations are described. The approximations made by Paduart resulted in a remarkably intelligible and coherent evaluation of the cable net structure. The historical approach can still be applied for a first verification of a pretensioned cable net or for a membrane structure as the simplified calculation method is similar.

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Beccarelli, Paolo; Maffei, Roberto; Galliot, Cédric; Luchsinger, Rolf H. A new generation of temporary pavilions based on Tensairity girders Steel Construction 4/2015 259-264 Articles

Kurzfassung

This paper provides a detailed overview of the design and construction of a series of temporary pavilions based on the Tensairity® principle. The pavilions are currently used in the Superbike racing category (Ducati Superbike Team), for the Audi tron Sailing Series, the ISAF Sailing World Cup and for other temporary events (3KIT pavilion). The paper describes the Tensairity® principle, the architectural and structural design of the pavilions, the manufacturing of the components and the assembly of the Tensairity® roofs.

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Announcement: Steel Construction 4/2015 Steel Construction 4/2015 264 Announcement

Kurzfassung

Keine Kurzfassung verfügbar.

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ECCS News: Steel Construction 4/2015 Steel Construction 4/2015 265-275 ECCS News

Kurzfassung

Events
Technical Committees (TC) activities
TC News
Further ECCS news

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Rubin, Helmut Jubilee prize competition Steel Construction 4/2015 276 Jubilee prize competition

Kurzfassung

Keine Kurzfassung verfügbar.

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Contents: Structural Concrete 4/2015 Structural Concrete 4/2015 Contents

Kurzfassung

Keine Kurzfassung verfügbar.

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