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

The Kazakh pavilion was the heart of the EXPO 2017 in Astana. The ball-shaped construction of steel and glass with a diameter of 80 m had to be designed in a very short time and erected at temperatures as low as -40°C. In the upper part, there are two wind turbines, which contribute to the sustainable energy supply of the pavilion. (Copyright: Andreas Keller, Altdorf, see p. 125)

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Yohanes Ingkiriwang and Harry Far: Numerical investigation of the design of single-span steel portal frames using the effective length and direct analysis methods
Hussein Haydar, Harry Far and Ali Saleh: Portal steel trusses vs. portal steel frames for long-span industrial buildings
Matthias Rohde: Loads and strength in amusement rides
Pierre-Olivier Martin, Tien Minh Nguyen and Laurence Davaine: Effect of the torsional stiffness of closed section stiffeners on plate buckling in Eurocode 3 Part 1-5
Maciej Chrzanowski, Christoph Odenbreit, Renata Obiala, Teodora Bogda, Hervé Degée: Shear stresses analysis at the steel-concrete interface. Experimental tests and FE numerical model.
Emidio Piermarini, Hayden Nuttall, Rob May, Victoria M. Janssens, Wolf Manglesdorf and Tim Kelly: Morpheus Hotel, Macau: A paradigm shift in computational engineering

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Dedicated to our speaker, Prof. Werner Sobek, in honour of his 65th birthday
In 2017, the University of Stuttgart started a Collaborative Research Centre with the title Adaptive Skins and Structures for the Built Environment of Tomorrow. The goal of this research project is to find an answer to today's most urgent social and ecological questions as the global population continuously increases and the available resources remain limited. As the central approach to the solution of this problem, adaptive elements will be included in the structure, the interior and the façade of an experimental 37 m tall building. This paper introduces the topic of adaptivity in building structures and provides an overview of the research topics applied in this globally unique adaptive high-rise building. Due to the complexity of research topics of this Collaborative Research Centre, this paper only covers the research concerning the experimental high-rise building.

Dedicated to Prof. Werner Sobek on the occasion of his 65th birthday
In 1864, James Clerk Maxwell wrote the remarkable paper “On Reciprocal Figures and Diagrams of Forces.” Maxwell observed that for a frame (what today would be called a truss or a net) to be in equilibrium, it must be the projection of a plane-faced polyhedron. It is now known that this observation is correct, provided the bars of the truss or net and the lines of the external applied forces can be represented by a planar graph. We also know that the plane-faced polyhedron is the Airy stress function.
This information can greatly assist a structural designer in creating, adjusting, and analysing structural nets. These nets can be planar structures or the planar projections of three dimensional nets (including spider webs). Simple visual techniques can be used to evaluate how many independent states of self-stress exist and how to adjust the design to achieve goals such as targeted geometries, redundancies or forces. Combined with force-density form finding, this process creates a powerful design tool. This paper will review the theoretical background and applications of the design process.

Dedicated to Prof. Werner Sobek on the occasion of his 65th birthday
On 16 May 2018, Prof. Werner Sobek turned 65. A few months earlier, the group of companies he founded, with more than 300 employees worldwide, celebrated its 25th anniversary. We would like to use Werner Sobek's birthday as an opportunity to reflect on some of the steel structures inspired by him. Out of the many projects that would have been eligible, the authors have focused on those that seem of primary importance or have not been written about yet.

Dedicated to Prof. Werner Sobek on the occasion of his 65th birthday

Dedicated to Prof. Dr.-Ing. Dr.-Ing. E.h. Dr. h.c. Werner Sobek on his 65th birthday.

Dedicated to Prof. Dr.-Ing. Dr.-Ing. E.h. Dr. h.c. Werner Sobek on the occasion of his 65th birthday

This paper deals with revised, simplified, consistent equations for plate-to-Circular Hollow Section (CHS) joints for inclusion in codes. After a short review of the background to these resistance equations in the current consolidated version of EN 1993-1-8 and those in ISO 14346, the background to these simplified new equations is discussed. The equations for Plate-to-Circular Hollow Section T and X joints (called TP and XP joints respectively) in the current EN 1993-1-8 are based on experimental data available up to 1991. They are further related to the equations for CHS T and X joints. Most of the data used are based on the ultimate joint resistance. A similar approach is used for the TP and XP equations in ISO 14346, but these are related to the updated equations for CHS T and X joints.
Since the drafting of ISO 14346, new consistent numerical data from Voth became available where the resistance is not only based on the ultimate resistance but also takes the 3 %d0 joint deformation limit into account.
The new equations in prEN 1993-1-8 are based on the Voth data, the de Winkel data and the Voth-Packer equations, but use a simplified uniform presentation which permits one to relate joints with an I, H and RHS brace-to-CHS chord to these basic equations. Furthermore, the presented equations are based on the case of axial compression load in the plate, which is the lower bound of the compression and tension load cases.

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Werner Sobek: from Ultralightweight Design to Triple Zero
Professor Akimitsu Kurita passed away

New chief editor of the journals “Stahlbau” and “Steel Construction” of publishing house Ernst & Sohn

ECCS news
Practical training sessions on cold-formed steel structures
Intergalva 2018 - 25th International Galvanizing Conference
9th International Symposium on Steel Bridges - 5th European Steel Bridge Awards
Launch of the 2018 competition for the 5th European Steel Bridge Awards
PROGRESS - Provisions for Greater Reuse of Steel Structures
Steelday | Swiss Construction Industry 4.0

Announcements Prof. Luís Simões da Silva, Doctor Honoris Causa of the University of Liège

Technical Committees (TC) activities TC7 - Thin Gauge Structures
TC14 - Sustainability

TC news Fire Design of Steel Structures: Nomination

R&D Activities Project Brief Overview
Circular Economy of the Steel Construction Products
Afterlife of Metal Products in the Construction Sector

Further ECCS news Fatigue Design of Steel and Composite Structures - 2nd Edition
Membership Benefits for Company Members

International Conference on Steel and Concrete Structures
Built Heritage Management and Presentation
Congress on Numerical Methods in Engineering

More than 2 million people pass through the Värtahamnen, Silja Line's ferry passenger terminal in Stockholm each year. As Ruukki designed and delivered the steel structures for the terminal, the prominent building is a good reference for the company and has recently been awarded a commendation from the Swedish Institute of Steel Construction. Every other year, the Institute gives an award for a structure where steel has been used innovatively and in an architecturally interesting way in the load-bearing structure of a building, which has been completed in an environmentally sustainable way. (© Ruukki)

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