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Steurer, Marlene; Petraschek, Thomas; Fink, Josef Development of an innovative sandwich plate for trough-type railway bridges - Extremely slender deck slab structure in steel-concrete composite design with cellular longitudinal shear connectors Steel Construction 3/2016 184-190 Articles

Kurzfassung

Substitute structures for old railway bridges with open railway tracks, which are constructed in accordance with valid European standards and regulations, require a specific, suitable deck slab design. Therefore, a composite plate with cellular longitudinal shear connectors and a low overall depth of 200 mm has been investigated at the Research Centre of Steel Structures (TU Wien). The research programme comprised experimental studies as well as additional numerical analyses by means of the finite element method concerning the shear force transmission-mechanism of the sandwich design. Laboratory studies included, among other issues, information about the failure mechanism in the core concrete. This article provides a description of the test program and gives a brief summary of selected research results. A short overview on continuing research activities to determine the serviceability, the load-bearing capacity as well as the fatigue strength of the sandwich plate is presented.

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Fire resistance of cold-formed steel columns Steel Construction 3/2016 190 Completed Phd theses

Kurzfassung

Keine Kurzfassung verfügbar.

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Simon, Pavel; Hrdli ka, Libor; Dráb, Ale ; Zv ina, Vojt ch A composite dowel bridge in the Czech Republic - Development, optimization and implementation of a railway bridge Steel Construction 3/2016 191-199 Articles

Kurzfassung

The floods in the Czech Republic in the last few decades have resulted in a significant number of bridges having to be rebuilt. Unfortunately, the work meant long-term traffic closures for railway bridges, coupled with significant costs for renovation and for providing alternative transport services. As a result, the minimum clear headroom above the design flood level required for new bridges and for reconstructing existing bridges has been increased. This initiated a search for new approaches to designing individual parts of bridge crossings, aiming to comply with the stricter conditions. The research aims to decrease costs in comparison with the costs of raising the finished grade level of the railway, especially at places where adjacent sections such as railway stations etc. are connected.

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Berthellemy, Jacques; Schavits, David; Erre, Charlotte Crossing motorways under traffic without intermediate piers Steel Construction 3/2016 200-206 Articles

Kurzfassung

The European research programme SBRI attempted to reveal the costs caused during the service life of a bridge - direct costs for the bridge owner as well as indirect costs for users. The principal results of SBRI should make it possible to take better account of the true costs of a central pier by considering the risks in the construction phase and those that may threaten the highway overpass during its service life.
CEREMA has developed two economic solutions to reach the objective of avoiding the central pier:
1) The solution implemented at Ko Wé Kara in New Caledonia is a steel-concrete composite tied arch bridge with innovative and economic details:
- innovative radial hangers made of welded plates, and
- innovative reinforcement against accidental impact of over-height vehicles.
2) One other possible solution is the composite steel-concrete gantry bridge. The European research programme PRECOBEAM allowed the use of tests and experimental projects to finalize a new system of connection to lower the cost of this type of structure: a strip along which the cutting line of the steel dowels is made in a clothoid shape (CL), which improves the fatigue resistance. CEREMA introduced this innovation in its research programme.
A composite structure can take various forms. It can associate, for instance, the steel web of a beam directly with a concrete flange. It can also constitute a composite deck with a bottom plate stiffened by connecting CL-shape indented strips. An outstanding project of this type in New Caledonia is described in detail. Of course, this type of bridge is an integral bridge and the article includes some recommendations for the design and construction of integral bridges.

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HISTWIN_PLUS Steel Construction 3/2016 206 News

Kurzfassung

Keine Kurzfassung verfügbar.

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Dias, Vincent; Odenbreit, Christoph Investigation of hybrid steel-glass beams with adhesive silicone shear connection Steel Construction 3/2016 207-221 Articles

Kurzfassung

Glass is used in current construction applications mostly as a façade element, its structural role being only rarely exploited, despite its significant resistance to in-plane compression. A steel-glass composite beam was built to investigate a hybrid steel-glass assembly and its loadbearing behaviour. To fulfil this objective, the existing types of steel-glass connection were evaluated, which allowed the possibilities offered by adhesive jointing to be highlighted. The selection of the adhesive, detailed in the present article, constituted a crucial aspect. An excessively soft connection does not transfer the shear loads between the glass and steel adherends, whereas an excessively stiff connection leads to failure of the glass. A two-component structural silicone was chosen and its properties were assessed with the help of an intensive test programme. As a result of this programme, a new quasi-incompressible hyperelastic material law was developed in order to represent the silicone elastomer behaviour. Numerical simulations were conducted in parallel to large-scale four-point bending tests on the adhesively bonded steel-glass composite beams. The aims were, on the one hand, to assess the bending stiffness of the steel-glass composite beam and, on the other, to validate the numerical simulations to conduct parametric studies.

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Steau, Edward; Keerthan, Poologanathan; Mahendran, Mahen Web crippling capacities of rivet fastened rectangular hollow flange channel beams under one flange load cases Steel Construction 3/2016 222-239 Articles

Kurzfassung

A new rivet fastened rectangular hollow flange channel beam (RHFCB) was proposed using an intermittently rivet fastening process as an alternative to welded beams. The rivet fastened RHFCB allows greater section optimisation and flexibility in designing suitable combinations of web and flange widths and thicknesses for many industrial applications. In the industrial applications of rivet fastened RHFCBs as flooring, roofing or modular building systems, their flanges will be fastened to supports, which will provide increased capacities. However no research has been conducted to investigate the web crippling capacities of RHFCBs with flanges unfastened and fastened to supports under one-flange load cases. Similarly the applicability of current design rules for cold-formed steel sections are not suitable for rivet fastened RHFCBs. Hence to address these issues, an experimental study was conducted to investigate the web crippling behaviour and capacities of RHFCBs based on the new AISI S909 standard test method. This study included rivet fastened RHFCBs with flanges unfastened and fastened to supports under End One Flange (EOF) and Interior One Flange (IOF) load cases. Tests with flanges fastened to supports showed that web crippling capacities increased by 39 and 5 % for EOF and IOF load cases. Comparisons of experimental web crippling capacity results with predictions using the current AS/NZS 4600 and AISI S100 design standards showed that web crippling design equations are conservative for rivet fastened RHFCBs with flanges unfastened and fastened to supports under EOF and IOF load cases. Hence new equations are proposed to determine the web crippling capacities of rivet fastened RHFCBs. This paper presents the details of this web crippling experimental study of rivet fastened RHFCB sections and the results.

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Mirambell, Enrique; Bordallo, Jordi; Real, Esther Torsion and its interaction with other internal forces in EN 1993-1-1 - a new approach Steel Construction 3/2016 240-248 Articles

Kurzfassung

This paper presents and clarifies the treatments included in EN 1993-1-1 [1] relating to checking the resistance of steel cross-sections under torsion and its interaction with other internal forces. Specifically, the origin of the formulations for shear-torsion interaction, which has not been found in the literature, is presented. Furthermore, a very simple formulation based on the expressions used for shear-torsion interaction is developed in order to take into account bending-warping torsion interaction for symmetrical I-sections (IP and HE steel profiles). Such a formulation overcomes the overly conservative approach given in EN 1993-1-1 [1] for class 1 and class 2 cross-sections (plastic and compact cross-sections). Finally, a rigorous method for determining the bending resistance of cross-sections is proposed considering the interaction with shear and torsion. The proposal is well suited to the concept of cross-section class and is perfectly consistent with the approaches set out to consider bending-shear and bending-warping torsion interactions.

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Helbig, Thorsten; Riederer, Jochen; Kamp, Florian; Oppe, Matthias Free-form on every scale - "Tornado" roof structure for Bory Mall, Bratislava, Slovakia Steel Construction 3/2016 249-354 Reports

Kurzfassung

The Bory Mall Shopping Centre, designed by the Italian architect Massimiliano Fuksas, is a mixed use development located on the outskirts of Bratislava, Slovakia.
The roof to the shopping mall's central plaza is a free-form steel gridshell. The concept for its shape is consistent from the footprint to the shape of the grid nodes. The gridshell is assembled from standard rolled steel hollow sections but uses the freedom created by individually shaped CNC-milled grid nodes to achieve a smooth transition between high slenderness at the bottom and the necessary stiffness at the top.
Working in close collaboration with Massimiliano Fuksas Architects, Knippers Helbig provided support for the development of the roof structure right from the start of the project and rounded off their services by providing detailed design of the free-form central “Tornado” façade grid nodes, which were fabricated and built by Metal Yapi.

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World Steel in Figures 2016 is available Steel Construction 3/2016 254 News

Kurzfassung

Keine Kurzfassung verfügbar.

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Schueremans, Luc; Furtado, Ana Claudia FRISOMAT - steel innovator in cold-rolled buildings Steel Construction 3/2016 255-258 Reports

Kurzfassung

Keine Kurzfassung verfügbar.

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Euro Space Center at Libin-Transinne Steel Construction 3/2016 258 News

Kurzfassung

Keine Kurzfassung verfügbar.

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ECCS news: Steel Construction 3/2016 Steel Construction 3/2016 259-263 ECCS news

Kurzfassung


Events:
The Pacific Structural Steel Conference 2016 / WINERCOST'17 /P Eurosteel 2017

Announcements: In Memoriam / Numerous reaction and testimonies have been received / Steel Construction Day 2016 in Belgium / Steel Construction Day 2016 in Norway
Technical Committees (TC) activities

TC news: Activities of ECCS TC6 „Fatigue and Fracture” / News from ECCS-TC 11 „Composite Structures” / Annex A - Membership / News from ECCS TC16 „Wind Energy Support Structures”

Other ECCS news: ECCS Meeting 2016 / EUROPEAN STEEL BRIDGES AWARDS CEREMONY

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Announcements: Steel Construction 3/2016 Steel Construction 3/2016 264 Announcements

Kurzfassung

Keine Kurzfassung verfügbar.

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Inhalt: UnternehmerBrief Bauwirtschaft 3/2016 UnternehmerBrief Bauwirtschaft 3/2016 Inhalt

Kurzfassung

Keine Kurzfassung verfügbar.

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Schalk, Günther Von Smart homes und Wintergärten... UnternehmerBrief Bauwirtschaft 3/2016 1 Editorials

Kurzfassung

Keine Kurzfassung verfügbar.

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Gesamtausgabe UBB 3/2016 UnternehmerBrief Bauwirtschaft 3/2016 1-24 Gesamtausgabe

Kurzfassung

Komplette Monatsausgabe

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Kurz informiert: UnternehmerBrief Bauwirtschaft 3/2016 UnternehmerBrief Bauwirtschaft 3/2016 2 Kurz informiert

Kurzfassung

Gutachten des Bundesrechnungshofs stärkt BVMB den Rücken
“Serielles Bauen” soll Nachhaltigkeit im Wohnungsbau sichern
Gute Stimmung in der Planungsbranche

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Karl, Christian K. Bauen in Vietnam: Gute Chancen für deutsches Know-how UnternehmerBrief Bauwirtschaft 3/2016 3-8 Berichte

Kurzfassung

In Asien ist nicht nur China als ein potenzielles Marktwachstumsland für ausländische Investoren interessant. Auch Vietnam entwickelt sich von einem einst durch Krieg verwüsteten Land zu einer wirtschaftlichen Erfolgsgeschichte Asiens. Seit der Wirtschaftserneuerungsreform “Doi moi” im Jahr 1986 hat Vietnam nach China die am zweitschnellsten wachsende Wirtschaft. Aktuell sind über 250 deutsche Firmen auf dem vietnamesischen Markt aktiv. Geringe Lohnkosten, eine sehr junge Bevölkerung und die relativ stabile politische Lage machen Vietnam zu einem attraktiven Investitionsstandort. Dieser UBB-Beitrag, basierend auf einer Studie aus dem Bereich Bautechnik & Baudidaktik der Universität Duisburg-Essen, gibt einen Überblick über die konjunkturelle Lage Vietnams. Außerdem wird die Entwicklung der Bauwirtschaft mit ihren verschiedenen Sparten vorgestellt sowie zukünftige Potenziale in der vietnamesischen Bauindustrie aufgezeigt.

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Talebitari, Burkhard "Wir wollen den Mittelstand gern dabei haben" UnternehmerBrief Bauwirtschaft 3/2016 9-10 Berichte

Kurzfassung

Gute Stimmung bei den Mitgliedsunternehmen - selbst wenn man sich informell umhörte, ca. 550 Gäste und Verkehrsminister Alexander Dobrindt als Festredner des Abends. Dass es Probleme zwischen dem Mittelstand und dem Verkehrsministerium gibt, ist dabei weniger überraschend als der Umstand, dass viele von ihnen altbekannt sind: Planungsprozesse besonders im Bereich Schienenwege und Bundesfernstraßenbau, ÖPP, Bauvertragsrecht, Nachwuchs- und Fachkräftegewinnung, das Erbschaftssteuergesetz, Neustart des sozialen Wohnungsbaus nebst Schaffung steuerlicher Anreize für Investoren ...

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Schneider, Christoph Thomas; Schonert, Katharina Vertrauen und Vorsicht: Spannung bei der Personalauswahl UnternehmerBrief Bauwirtschaft 3/2016 11-13 Berichte

Kurzfassung

Insbesondere im Mittelstand müssen Fach- und Führungskräfte bereits nach kurzer Einarbeitungszeit die erwartete - und von den Bewerbern ja ebenso in Aussicht gestellte - Leistung erbringen. Dabei bauen die Erwartungen des Bauunternehmens auf den Angaben des Bewerbers auf. Aber stimmen diese? Was, wenn nicht? Und wie erkennt man falsche Angaben? Der UBB gibt Tipps für die Sichtung und Auswahl von Bewerbern.

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Schalk, Günther Aktuelles aus der Rechtsprechung UnternehmerBrief Bauwirtschaft 3/2016 14-15 Berichte

Kurzfassung

Bauzeitverlängerung auch bei “normaler” Witterung?
BAG stellt klar: Zeugnis muss nicht “gut” oder “sehr gut” sein
Hat die Baufirma eine Verkehrssicherungspflicht?

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UBB-Steuertrends UnternehmerBrief Bauwirtschaft 3/2016 16 Berichte

Kurzfassung

Keine Kurzfassung verfügbar.

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Bauleistung: Vertrauensschutz? UnternehmerBrief Bauwirtschaft 3/2016 16 Berichte

Kurzfassung

Im Chaos zur Steuerschuldnerschaft bei Bauleistungen können Baufirmen einen entscheidenden Etappensieg feiern. Der Bundesfinanzhof hat entschieden, dass ernstliche Zweifel an der Rechtmäßigkeit des § 27 Abs. 19 UStG bestehen. Wir erklären Ihnen, was das bedeutet.

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Neue Gestaltungsüberlegungen UnternehmerBrief Bauwirtschaft 3/2016 17 Berichte

Kurzfassung

Trägt eine Kapitalgesellschaft Kosten für die Tochtergesellschaft, stellt sich die Frage, ob die Muttergesellschaft diese Kosten als sofort abziehbare Betriebsausgaben behandeln darf oder ob sie diese Kostenübernahme als verdeckte Einlage behandeln und die Kosten deshalb auf die Beteiligung aktivieren muss. In der Praxis haben Mutter- und Tochtergesellschaft hier interessante Gestaltungsmöglichkeiten.

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