Keine Kurzfassung verfügbar.

Keine Kurzfassung verfügbar.

Keine Kurzfassung verfügbar.

Stahlbauforum 2018
Die neue DIN EN 1090-2
Die neue DIN EN ISO 12944 - Wissenswertes für Planer
VDI-Arbeitskreis Technikgeschichte
Deutscher Stahlbautag 2018

Keine Kurzfassung verfügbar.

Keine Kurzfassung verfügbar.

Keine Kurzfassung verfügbar.

Keine Kurzfassung verfügbar.

Bridges are of vital importance for the European infrastructure network. Due to their significance in the political economy, the requirement for sustainable, meaning highly advanced, cost-effective, environmentally friendly and long-lived structures is outstanding. Therefore steel composite road bridges were analysed in the Sustainable Steel-Composite Bridges in Built Environment RFCS project (SBRI) by means of a holistic approach combining Lifecycle Assessment, Lifecycle Costs and Lifecycle Performance analyses to promote steel in the bridge construction. The partners of the project were the Institute of Structural Design Universität Stuttgart, Universidade Coimbra, Institut français des sciences et technologies des transports, de l'aménagement et des réseaux, BRISA Engenharia e Gestão SA and ArcelorMittal.
The paper presents a holistic approach to steel and concrete composite bridges by combining analyses of their environmental, economic and functional qualities. The idea of sustainable design is implemented by the project SBRI+ to increase the acceptance of this new way of sustainable thinking, especially among bridge owners and planners. The project includes the SBRI tool which provides designers and authorities with a tool for the evaluation and comparison of the sustainability of different bridge types in the early stages of design, implementing a holistic lifecycle analysis methodology. This helps to select the best option by considering the pros and cons of each alternative in the entire lifespan of the bridge (i.e. construction, operation and end-of-life stages) as opposed to the simple comparison of initial construction costs.

Keine Kurzfassung verfügbar.

The era of globalization enables the design, fabrication and erection of steel structures to take place in different locations far away from each other. Therefore, a widely acceptable steel design standard is required, and designers should be familiar with alternative specifications that may be considerably different from one another. This study deals with single-span unbraced steel portal frames and makes a comparison between the design methodologies adopted by the Australian and American design provisions, in particular, the effective length method (ELM) and direct analysis method (DAM). A brief discussion on the main features of both standards is also presented. Furthermore, the results of the parametric study are portrayed, highlighting the differences between these two design standards regarding stress interaction. Finally, of the two aforementioned methods, the most applicable optimization method for the design and development of cost-effective industrial portal frame buildings is proposed with respect to the structure geometry.

In many European countries, both road and railway infrastructure needs intensive investment to keep up with the growing demands of mobility [1] and goods traffic. Steel or steel-concrete composite bridges offer viable and very sustainable solutions in this context [2]. Owing to its unlimited recyclability, steel can generally be regarded as the ideal material for such sustainable structures. In particular, when designers or fabricators exploit the possibilities of the steel industry available nowadays, very cost-efficient and remarkable structures are feasible. This paper will highlight some of the newest developments in heavy plates for bridge-building. For example, the so-called thick-plate trough bridges have proved to be a favourable concept for small-span railway bridges [3]. Very heavy plates with single plate weights of up to 42 t allow these bridges to be built very efficiently from just one or very few single plates. Another interesting development is the so-called longitudinally profiled plate, which allows the plate thickness to be varied along the actual loading profile. Finally, the benefits of high-thickness thermomechanically rolled plates (TM steel) will be discussed; these offer an ideal solution as the use of higher-strength steels in bridge-building gains more and more ground.

Growing problems in terms of damage to bridges correlated with - in some cases huge - long-term impacts on road traffic have shown how essential it is to ensure the durability of the infrastructure and thus the mobility of people as well as the exchange of goods. Corrosion damage can be sustainably avoided in future by employing alternative protection systems for steel and composite bridges. Both hot-dip galvanizing with a coating thickness of at least 200 &mgr;m and weathering steel offer crucial advantages over traditional coating systems when considering the whole life cycle of a bridge: They require no maintenance, and so traffic disruption can be avoided. When using these systems in combination with hot-rolled sections, there are further significant advantages as they render composite bridges more economical and durable, particularly when it comes to short and medium spans. Standard higher strengths with steel grade S460 allow for more economical cross-sections, with weight- and cost-savings of often 20-30 % compared with welded built-up sections in grade S355. Sophisticated designs employing rolled sections can achieve not only small and medium spans, but also longer ones, e.g. arch bridges with spans > 100 m. This article describes new trends in Europe using hot-rolled sections in steel and composite bridges.

Portal frames and portal truss structures are two of the most cost-effective and sustainable structural forms for the design and construction of long-span industrial buildings. Although the use of both structure types as steel-clad structures is widely accepted, due to frame complexity and variation of frame types for use in single-storey buildings with spans > 30 m, literature providing a comprehensive investigation of the concepts of portal trusses and portal frames is scarce. This study compares the behaviour of a portal truss configuration with pitched portal frames for use in industrial buildings with spans > 30 m, focusing on weight, costs and construction time. Furthermore, this study entails a numerical investigation that utilizes the SAP2000 computer program to model and structurally optimize the member properties for both portal frame and portal truss configurations. Based on the results obtained from the investigation, it has become apparent that, due to the smaller sections used, the portal truss configurations are lighter and cheaper to fabricate and construct in comparison to the pitched portal frames, which, however, require a shorter construction time.

This article describes how cutting-edge, parameter-based computational engineering techniques have been used to undertake the conception, analysis and documentation of the 2500 complex steelwork connections in the exoskeleton of the new Morpheus Hotel in Macau. It discusses the tools, methodologies and strategies devised by the engineering team to automate the time-consuming model creation and data-handling operations associated with the finite element analysis, enabling them to complete this challenging part of the project in just 12 months.

All over the world the amusement ride industry is growing steady and all manufactures deliver their products all over the world. This requires a harmonized philosophy of the standards. Today most of the rides are designed to the American Standards of ASTM (F2291-2017) or the European Standard EN 13814. The new revision of EN 13814 passed the formal vote of European members in April 2018. Both committees work close together and the new EN 13814 is in the most important parts harmonized with ASTM F2291.
This article covers the ongoing discussion of passenger weights, wind loads and partial safety factors. Portable rides especially, set up at various locations; need a clear guideline for the design for in-service and out-of-service winds. The study gives proposal wind assumptions, but is necessary to draft guidelines defining when the operator should stop the ride. In mountainous and coastal areas especially, the wind may build up faster than in urban agglomerations, and the ride must be stopped earlier.
Use of the fatigue calculation along with the Eurocode and ASTM philosophy with FKM is already common practice and is now defined as an applicable design basis in both standards.

European Steel Bridge Awards 2018
Awards Ceremony for the European Steel Bridge Award 2018

Steel Bridges 9th International symposium on Steel bridges 5th European Steel Bridges Awards
ESaT2018 - 3rd International Conference on Engineering Sciences and Technologies
CASP2019 - Corrosion and Surface Protection for Steel
Congress on Numerical Methods in Engineering
SEMEC 2019 - Seventh International Conference on Structural Engineering, Mechanics and Computation
SDSS 2019 - Stability and ductility of steel structures
Nordic Steel Construction Conference 2019

Steigerwaldstadion, Multifunktionsarena für Erfurt.
2015 wurde das traditionsreiche Steigerwaldstadion nach einem Entwurf der HPP Architekten Düsseldorf bei laufendem Betrieb erneuert und erweitert. Pünktlich zum Auftakt der Saison 2016/2017 wurde die neue Multifunktionsarena im Sommer 2016 fertiggestellt. Im Bild: gut erkennbar der segmentierte Verlauf der Tribünenelemente während der Bauphase. (Foto: OPTERRA/Sven-Erik Tornow)

Keine Kurzfassung verfügbar.

Keine Kurzfassung verfügbar.

Komplette Monatsausgabe

Gemeinsame Vorgehensweise unerlässlich
“Bau-Mittelständler leiden unter Illegalität”
Deponieknappheit als Baupreistreiber

Seit nunmehr gut zwei Monaten ist das neue Bauvertragsrecht in Kraft - Zeit für eine erste Zwischenbilanz. Haben sich die düsteren Prophezeihungen vieler kritischer Zeitgenossen erfüllt oder ist alles halb so wild? Welche ersten Erfahrungen hat die Bauwirtschaft mit den neuen Regelungen gemacht? Sind jetzt alle Fragen geklärt, die den “Usern” bis jetzt auf den Nägeln gebrannt haben? Der UBB greift die Knackpunkte auf und gibt Tipps, wie sie in der Praxis gelöst werden können. Und natürlich geht es um eine Glaubensfrage: VOB-Vertrag - ja oder nein? Die Fragen werden die Bauwirtschaft noch länger beschäftigen: Frühestens in fünf Jahren will der Gesetzgeber über Änderungen und Korrektur am neuen Recht nachdenken.

“Es boomt am Bau wie lange nicht mehr.” Das waren die prägnanten Worte von BVMB-Hauptgeschäftsführer Michael Gilka in seinem “Ausblick - Baujahr 2018” am “Tag der mittelständischen Bauwirtschaft” und des Neujahrsempfangs der Bundesvereinigung Mittelständischer Bauunternehmen e.V. (BVMB). Dass nicht alles Gold sei, was glänzt, sagt er auch. Er hält dann eine glänzende, kurze Ansprache, die nach der goldenen Bilanz des Jahres 2017 alles aufzeigt, was am Bau teils nach wie vor, teils neuerdings nicht so recht glänzen will - von den zu geringen Gewinnmargen über die signifikante Zunahme häufig rechtswidriger Aufhebungen von Ausschreibungen, den notorischen Fachkräftemangel, die dringend erforderliche Verstetigung der Investitionen, die Beseitigung der bestehenden Produktivitätsengpässe bis zu der dringenden und einzig sinnfälligen Forderung, die bisherige Trennung der Bau- und Verkehrsinfrastrukturpolitik aufzugeben und beide Bereiche wieder in die Zuständigkeit eines Bundesministeriums zu legen.