Journal articles
Author(s) | Title | Journal | Issue | Page | Category |
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Misiek, Thomas; Belica, Andrej | Calibration of European web-crippling equations for cold-formed C- and Z-sections | Steel Construction | 1/2019 | 31-43 | Articles |
AbstractCurrent design equations given in EN 1993-1-3 for calculating the web-crippling resistance of cross-sections with one web were copied from the AISI's Specification for the design of cold-formed steel structural members, taking into account the different safety concepts: load and resistance factor design (LRFD), with resistance factors&phgr;w applied to nominal values, and limit state design, with partial factors &ggr;M applied to characteristic values as defined in EN 1990. Furthermore, the web-crippling equations of subsequent editions of the AISI specification (then designated AISI S100) were completely revised based on the web-crippling data collected and evaluated by Beshara and Schuster [5]. x | |||||
Chrzanowski, Maciej; Odenbreit, Christoph; Obiala, Renata; Bogdan, Teodora; Degée, Hervé | Transfer of shear stresses at steel-concrete interface - Experimental tests and literature review | Steel Construction | 1/2019 | 44-54 | Articles |
AbstractShear stresses can be transferred via bond at the steel-concrete interface without having to consider any mechanical shear connectors. The research conducted shows that the use of anti-adhesive products, such as grease, reduce the bond at the steel-concrete interface in push-out tests (POTs). However, the effect is still significant, especially for fully encased steel profiles. The results of an experimental POT campaign with nine small-scale cube specimens and two composite column specimens are presented here. Three different surface conditions were examined: a) an untreated surface, b) a surface treated with anti-adhesive agent (formwork release oil) and c) a surface treated with PTFE spray. The resulting ultimate shear stresses were compared with the experimental results available in the literature [1-10]. How the different geometries of the specimens, the concrete age and the surface treatment conditions influence the bond strength are compared and summarized. x | |||||
Björk, Timo; Ahola, Antti; Tuominen, Niko | Distortional buckling of X-joints made of square hollow cross-section beams: theoretical energy-based model | Steel Construction | 1/2019 | 55-63 | Articles |
AbstractCurrent design codes do not consider distortional buckling failure modes, which can occur in the chord member of a tubular X-joint loaded axially by brace members. In this study the critical load for distortional buckling is established based on the energy method and a beam on elastic foundation (BEF) approach. In the theoretical model the capacity is created by elastic bending of the chord faces in their own planes and elastic bending of the cross-section as a frame structure. The theoretical capacity of an X-joint is compared with numerical results obtained from finite element analyses (FEAs). Some discrepancy was found between theoretical model and numerical analysis, with the theoretical model slightly underestimating the load-carrying capacity. Experimental tests show that an X-joint can be prone to distortional buckling failure mode. However, detailed scrutiny of distortional buckling failure in X-joints is only legitimate for joints made of high-strength steel (HSS), because other failure mechanisms are more critical when conventional steels are used. Nevertheless, designers of X-joints with rectangular hollow section (RHS) members should be aware of this potential failure mode. x | |||||
van Es, Sjors; Slot, Henk; Steenbergen, Henri; Maljaars, Johan; Pijpers, Richard | Use of HSS and VHSS in steel structures in civil and offshore engineering - Requirements regarding material properties | Steel Construction | 4/2018 | 249-256 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Feldmann, Markus; Schaffrath, Simon | Application of damage theory to structures made from high-strength steels - Prediction of component strength and ductility | Steel Construction | 4/2018 | 257-263 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Stroetmann, Richard; Kästner, Thoralf; Hälsig, André; Mayr, Peter | Influence of the cooling time on the mechanical properties of welded HSS-joints | Steel Construction | 4/2018 | 264-271 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Kuhlmann, Ulrike; Spiegler, Jennifer | Innovative high-strength steel construction using mixed connections | Steel Construction | 4/2018 | 272-277 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Kim, Seon-Hu; Lee, Cheol-Ho | Structural performance of CHS X-joints fabricated from high-strength steel | Steel Construction | 4/2018 | 278-285 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Shi, Gang; Chen, Xuesen | Research advances in HSS structures at Tsinghua University and codification of the design specification | Steel Construction | 4/2018 | 286-293 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Coelho, Ana M. Girão; Bijlaard, Frans | Moment-resisting joints in high-strength steel: areas for improvement in design standards | Steel Construction | 4/2018 | 294-305 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Chiew, Sing-Ping; Cai, Yan-Qing | Design of high-strength steel reinforced concrete columns - a Eurocode 4 approach | Steel Construction | 4/2018 | 306-314 | Articles |
AbstractIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Popa, Nicoleta; Charlier, Marion; Tibolt, Mike; Rademacher, Dennis; Ryjá ek, Pavel; Jehlicka, Petr; Wald, Franti ek; Kuhlmann, Ulrike; Pascual, Ana M.; Rigueiro, Constança; Orcesi, André; Martins, Nuno | Holistic approach to sustainability of bridges | Steel Construction | 3/2018 | 179-183 | Articles |
AbstractBridges 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. x | |||||
Ingkiriwang, Yohanes Gabriel; Far, Harry | Numerical investigation of the design of single-span steel portal frames using the effective length and direct analysis methods | Steel Construction | 3/2018 | 184-191 | Articles |
AbstractThe 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. x | |||||
Lehnert, Tobias | Special heavy plate solutions for bridges | Steel Construction | 3/2018 | 192-195 | Articles |
AbstractIn 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. x | |||||
Rademacher, Dennis; Ochojski, Wojciech; Lorenc, Wojciech; Ko uch, Maciej | Advanced solutions with hot-rolled sections for economical and durable bridges | Steel Construction | 3/2018 | 196-204 | Articles |
AbstractGrowing 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. x | |||||
Haydar, Hussein; Far, Harry; Saleh, Ali | Portal steel trusses vs. portal steel frames for long-span industrial buildings | Steel Construction | 3/2018 | 205-217 | Articles |
AbstractPortal 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. x | |||||
Rohde, Matthias | Loads on and strengths of amusement rides | Steel Construction | 3/2018 | 232-239 | Articles |
AbstractAll 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. x | |||||
Weidner, Stefanie; Kelleter, Christian; Haase, Walter; Sternberg, Paula; Geiger, Florian; Bischoff, Manfred; Burghardt, Timon; Honold, Clemens; Binz, Hansgeorg; Wagner, Julia; Böhm, Michael; Sawodny, Oliver | The implementation of adaptive elements into an experimental high-rise building | Steel Construction | 2/2018 | 109-117 | Articles |
AbstractDedicated to our speaker, Prof. Werner Sobek, in honour of his 65th birthday x | |||||
Baker, William F.; Mazurek, Arek; Hartz, Christian | The design of structural "spider webs" | Steel Construction | 2/2018 | 118-124 | Articles |
AbstractDedicated to Prof. Werner Sobek on the occasion of his 65th birthday x | |||||
Bechmann, Roland; Hagenmayer, Stephen; Winterstetter, Thomas | Efficiency and beauty - steel structures by Werner Sobek | Steel Construction | 2/2018 | 125-132 | Articles |
AbstractDedicated to Prof. Werner Sobek on the occasion of his 65th birthday x | |||||
Barkow, Frank; Leibinger, Regine | In dialog | Steel Construction | 2/2018 | 133-134 | Articles |
Engelsmann, Stephan; Peters, Stefan | High-end roofs for central bus stations in the federal state of Baden-Württemberg, Germany | Steel Construction | 2/2018 | 135-139 | Articles |
AbstractDedicated to Prof. Dr.-Ing. Dr.-Ing. E.h. Dr. h.c. Werner Sobek on his 65th birthday. x | |||||
Blandini, Lucio; Grasmug, Walter | The search for dematerialized building envelopes - the role of glass and steel | Steel Construction | 2/2018 | 140-145 | Articles |
AbstractDedicated to Prof. Dr.-Ing. Dr.-Ing. E.h. Dr. h.c. Werner Sobek on the occasion of his 65th birthday x | |||||
Wardenier, Jaap; Packer, Jeffrey A.; Puthli, Ram | Simplified design equations for Plate-to-CHS T and X joints for use in codes | Steel Construction | 2/2018 | 146-161 | Articles |
AbstractThis 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. x | |||||
Iwata , Mamoru; Midorikawa, Mitsumasa; Koyano, Kazuhisa | Buckling-restrained brace with high structural performance | Steel Construction | 1/2018 | 3-9 | Articles |
AbstractThe authors have studied the buckling-restrained brace providing a stable hysteretic characteristic even under high-strain conditions. The structural performance of the buckling-restrained brace is represented by the evaluation formula that is the lower limit of the cumulative plastic strain energy ratio. However, as earthquakes are becoming much longer, so it is necessary to research and develop a new buckling-restrained brace with a higher energy dissipation capacity. In this paper, our past studies are reviewed and the conditions of high-performance of buckling-restrained braces extracted. The buckling-restrained brace considered was tested. As a result, a buckling-restrained brace with a larger cumulative plastic strain energy ratio is proposed. x |