abo_gift abo_online abo_print abo_student abo_test angle_left angle_right angle_right_filled arrow_big_down arrow_big_down_filled arrow_big_left arrow_big_left_filled arrow_big_right arrow_big_right_filled arrow_big_up arrow_big_up_filled arrow_dropdown_down arrow_dropdown_up arrow_small_left arrow_small_left_filled arrow_small_right arrow_small_right_filled arrow_stage_left arrow_stage_left_filled arrow_stage_right arrow_stage_right_filled caret_down caret_up close close_thin close_thin_filled contact download_thick download_thick_filled download_thin download_thin_filled ebook edit element_headline element_label element_relatedcontent lock mail minus page page_filled pages pages_filled phone plus print print_filled quotationmarks_left quotationmarks_right search send share share_filled shoppingcart_big shoppingcart_big_filled shoppingcart_header shoppingcart_small shoppingcart_small_filled social_facebook social_googleplus social_linkedin social_pinterest social_twitter social_xing social_youtube user_big user_small

Artikeldatenbank

Filter zurücksetzen
  • Autor(en)

  • Sprache der Veröffentlichung

  • Erschienen

  • Rubrik

Zeitschriften-Selektion

  • Alle auswählen Alle abwählen
Autor(en) Titel Zeitschrift Ausgabe Seite Rubrik
News: Steel Construction 3/2015 Steel Construction 3/2015 154 News

Kurzfassung

Workshop “Large Valorisation on Sustainability of Steel Structures”
Workshop on Trends and Challenges for Wind Energy Harvesting

x
Andreassen, Michael Joachim; Jönsson, Jeppe Joint and column behaviour of slotted cold-formed steel studs Steel Construction 3/2015 155-161 Articles

Kurzfassung

Slotted cold-formed steel studs are used in loadbearing external plasterboard walls. The cold-formed steel studs in these walls are supported by and joined to track sections at the top and the bottom. This paper describes the compression testing of the loadbearing studs in order to observe the behaviour of the studs and the track joints. The experiments included a joint design with a special web stiffener used in practice. The studs were C-sections and the tracks were U-sections. Eight different test series were performed. Each test series had different column lengths and thicknesses, both with and without web stiffeners, in order to establish the influence of these on the joint behaviour and loadbearing capacity of the slotted cold-formed steel studs.

x
News: Steel Construction 3/2015 Steel Construction 3/2015 161 Completed Phd theses

Kurzfassung

Behaviour of cylindrically curved steel panels under in-plane stresses
Robustness of car parks subjected to localized fire

x
Luís Simões da Silva Steel Construction 3/2015 161 People

Kurzfassung

Keine Kurzfassung verfügbar.

x
Aarønæs, Anton; Nilsson, Hanna; Neumann, Nicolas Dynamic response of steel pipe rack structures subjected to explosion loads Steel Construction 3/2015 162-166 Articles

Kurzfassung

This paper describes a parametric study of the dynamic behaviour of steel pipe rack structures subjected to explosion loading. The pipe rack design is assumed to be a multi-planar lattice girder consisting of rectangular or square hollow sections. Numerical analysis with the finite element method was performed on a series of 54 pipe racks in total, varying parameters such as mass distribution and aspect ratio. The study provides a deeper understanding - and forms the basis for a more accurate prediction - of the dynamic response of multi-planar lattice girder structures such as steel pipe racks.

x
Braun, Matthias; Obiala, Renata; Odenbreit, Christoph Analyses of the loadbearing behaviour of deep-embedded concrete dowels, CoSFB Steel Construction 3/2015 167-173 Articles

Kurzfassung

The development of the “CoSFB-Betondübel” is presented in this paper. The “CoSFB-Betondübel” is a deep-embedded concrete dowel connecting in situ concrete with a steel section to assure composite action and thus allow for composite beam design. The loadbearing behaviour and parameters influencing this behaviour were determined through experimental tests. Special focus was given to the influence of the ratio of the resistance of the concrete dowel to the concrete compression class. The evaluation of the results concluded in a National Technical Approval [1]. Further investigations were performed via FE analysis in ABAQUS. Further, 3D models with non-linear material and geometry were prepared and validation undertaken. In addition, a real application example of CoSFB is shown.

x
Hämäläinen, Olli-Pekka; Björk, Timo Fretting fatigue phenomenon in bolted high-strength steel plate connections Steel Construction 3/2015 174-178 Articles

Kurzfassung

Fretting fatigue is a major obstacle for bolted joints used as an alternative to welding. Several studies of the subject so far have concerned aluminium or titanium joints, but due to the recently developed high-strength steels that can be challenging to weld, the steel industry would also like to explore this field. This paper presents the experimental fatigue test results of double-lap joints in S355 and S960QC steels. The results are compared and analysed using the SWT parameter and an FE model of the test specimen. The noticeable difference in fretting fatigue behaviour of these materials will be explained and the controversial crack initiation issue addressed.

x
News: Steel Construction 3/2015 Steel Construction 3/2015 178 News

Kurzfassung

Offshore Structures Course
EcoSteelPanel

x
Schillo, Nicole; Feldmann, Markus Local buckling behaviour of welded box sections made of high-strength steel - Comparing experiments with EC3 and general method Steel Construction 3/2015 179-186 Articles

Kurzfassung

One aim within the RFCS-funded RUOSTE research project was to study the effects of high-strength steel properties on local buckling. The respective parameters were investigated on 34 stub column specimens. The specimens were made of S500MC, S700MC and S960MC, with a non-dimensional local slenderness varying between 0.64 and 1.55. Extensive imperfection measurements were undertaken and analysed. The specimens were then used in stub column tests to investigate the local buckling behaviour. The results were first compared with the resistance curve of the current Eurocode (EC), which was shown to be rather optimistic, especially towards the slender end of the range. Secondly, the results were compared with the general method, which uses an equivalent imperfection approach.

x
"Le Bois aux Daims", Center Parc, Poitou-Charentes Steel Construction 3/2015 186 News

Kurzfassung

Keine Kurzfassung verfügbar.

x
Steige, Yvonne; Weynand, Klaus Design resistance of end plate splices with hollow sections Steel Construction 3/2015 187-193 Articles

Kurzfassung

This paper presents a design approach for calculating rectangular hollow section (RHS) splices (bolted end plate connections) under tension forces or bending moments in accordance with EN 1993-1-8. Based on models available in the literature, a Eurocode-conform model is presented using the component method. The original model, based on experimental and numerical investigations, uses a three-dimensional yield line method to predict the tension resistance of bolted splices with hollow sections considering the joint as a whole. The adapted model is fully compatible with EN 1993-1-8. Moreover, the original model has been extended to predict also the design moment resistance of such RHS splices.

x
Döring, Bernd; Reger, Vitali; Kuhnhenne, Markus; Feldmann, Markus; Kesti, Jyrki; Lawson, Mark; Botti, Andrea Steel solutions for enabling zero-energy buildings Steel Construction 3/2015 194-200 Articles

Kurzfassung

The European Directive on the Energy Performance of Buildings (EPBD) obliges the member states to ensure that, by 31 December 2020, all new buildings are nearly zero-energy buildings (nZEB). This paper presents solutions for steel-intensive commercial buildings that achieve this requirement. Several key components such as façades, floor systems and steel piles for ground energy storage were investigated in detail using numerous numerical simulations and practical tests of selected options. Furthermore, options for a whole building which fulfil the zero-energy building approach were identified for different European climates by performing a parametric study using a thermal building simulation tool.

x
Stranghöner, Natalie; Jungbluth, Dominik Fatigue strength of marked steel components - Influence of durable marking methods on the fatigue strength of steel components Steel Construction 3/2015 201-209 Articles

Kurzfassung

According to EN 1090-2, steel components have to be identifiable and traceable throughout the whole production chain. The choice of identification method is not specified consistently in international rules and standards. In terms of durability and liability, markings should be resistant to particular fabrication processes such as sandblasting, hot-dip galvanizing or coating. The methods are hard stamping, scribing, plasma marking and needling. The effect of the notch caused by the marking process on the fatigue strength of the components has not yet been investigated in detail. As a result, a classification of the notch details in the European detail categories of EN 1993-1-9 is, in principle, impossible. For these reasons, the influence of durable marking methods on the fatigue strength of steel components needs to be clarified by experimental fatigue tests currently being performed at the Institute for Metal and Lightweight Structures, University of Duisburg-Essen. Part of this investigation involves examining the different surface conditions of hard-stamped, scribed, plasma-marked and needled specimens. The experimental investigations are being carried out considering two different steel grades, S355J2 and S460N, and three different steel plate thicknesses, 15, 25 and 40 mm.

x
Kido, Ewa Maria; Cywinski, Zbigniew The new steel-glass architecture of passenger service centres on expressways in Japan Steel Construction 3/2015 210-215 Report

Kurzfassung

Nowadays, modern expressways worldwide are becoming very important arteries for the quick and safe transportation of people and goods. Service centres are located along these roads for the convenience of drivers and passengers. Those centres consist of buildings and other infrastructure elements and provide various services. Usually, buildings represent contemporary trends in architecture and structural engineering. Steel and glass are widely used. This is also the case in Japan but, simultaneously, adequate approaches are being made to respect the country’s own traditions as well. This paper is a continuation of the authors’ previous publications [1], [2], [3] devoted, respectively, to buildings, railway stations and air terminals.

x
ECCS News: Steel Construction 3/2015 Steel Construction 3/2015 215-219 ECCS News

Kurzfassung

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

x
Danube City Tower: Semi-active dampers respond to various load cases Steel Construction 3/2015 219-220 News

Kurzfassung

Keine Kurzfassung verfügbar.

x
Announcement: Steel Construction 3/2015 Steel Construction 3/2015 220 Announcement

Kurzfassung

Keine Kurzfassung verfügbar.

x
Contents: Structural Concrete 3/2015 Structural Concrete 3/2015 Contents

Kurzfassung

Keine Kurzfassung verfügbar.

x
Caspeele, Robby; Steenbergen, Raphaël; Sørensen, John Dalsgaard Special issue of "Structural Concrete" with articles from the JCSS workshop on "Risk- and reliability-based assessment of existing structures" Structural Concrete 3/2015 313 Editorial

Kurzfassung

Keine Kurzfassung verfügbar.

x
Tanner, Peter; Hingorani, Ramon Acceptable risks to persons associated with building structures Structural Concrete 3/2015 314-322 Technical Papers

Kurzfassung

In routine engineering practice, the risks associated with safety considerations addressed when designing new or assessing existing structures are not quantified and the corresponding acceptance criteria may diverge widely. Although the use of explicit risk analysis methods to quantify structural safety would therefore deliver significant benefits, the implementation of such methods is hindered by a series of technical and administrative obstacles.
The present study explores methods and tools for the practical application of explicit risk analysis methods. Structure-related risks to persons are established on the grounds of the probability of structural failure and its consequences in terms of loss of human life. The procedure adopted is applied to a representative set of building structures. Acceptance criteria for risks to persons associated with such structures are deduced from the findings. These criteria provide a rational basis for decision-making in structural engineering. They may be used in explicit risk analysis or as a basis for the consistent calibration of simplified models for determining partial factors in the design of new or assessment of existing structures.

x
Steenbergen, Raphaël D. J. M.; Sýkora, Miroslav; Diamantidis, Dimitris; Holický, Milan; Vrouwenvelder, Ton Economic and human safety reliability levels for existing structures Structural Concrete 3/2015 323-332 Technical Papers

Kurzfassung

Specifying the target reliability levels is one of the key issues in the assessment of existing structures. For a majority of existing buildings and infrastructures, the design life has been reached or will be reached in the near future. These structures need to be reassessed in order to verify their safety. Eurocodes provide a general basis primarily intended for the design of new structures, but the basic principles can be used for assessing existing buildings, too. Reliability levels are generally based on both economic optimization and criteria for human safety. In this study, both methods are elaborated for existing structures. It appears that the requirement for the same target reliability for existing and new structures is uneconomical. Further, cost optimization seems to yield rather low reliability levels and human safety criteria often become the critical factor. The study concludes with practical guidelines for establishing reliability indices for existing structures linked to Eurocode principles.

x
Allaix, Diego Lorenzo; Carbone, Vincenzo Ilario; Mancini, Giuseppe Modelling uncertainties for the loadbearing capacity of corroded simply supported RC beams Structural Concrete 3/2015 333-341 Technical Papers

Kurzfassung

The probabilistic assessment of structures damaged by corrosion calls for deterministic models of the degradation of the structural performance and probabilistic models accounting for the uncertainties in material properties, geometry and models used in the reliability analysis. This paper describes the development of a probabilistic model of the uncertainties that arise from the prediction of the loadbearing capacity of reinforced concrete structures damaged by corrosion of the reinforcement. The investigation focuses on the flexural failure of simply supported beams suffering from chloride-induced corrosion. The loss of steel cross-sectional area, the reduction in strength and ductility of the corroded bars, the loss of bond between reinforcement and concrete and the cracking of the concrete cover are taken into account in a non-linear finite element analysis. The comparison between experimental results and numerical predictions of the failure load allows the quantification of the model uncertainty according to the framework proposed by the Joint Committee on Structural Safety. A Bayesian updating methodology is proposed to account for prior knowledge and experimental results.

x
Strauss, Alfred; Karimi, Saeed; Kopf, Fritz; Capraru, Catalin; Bergmeister, Konrad Monitoring-based performance assessment of rail-bridge interaction based on structural reliability Structural Concrete 3/2015 342-355 Technical Papers

Kurzfassung

For today's railways, the continuous welded rail, which enhances driving dynamics and comfort for passengers, is often the construction method of choice. However, bridges and viaducts, which can be seen as singularities in the railway substructure, still pose a few unsolved problems; the bridge structure deforms under the impacts of thermal variation, creep, shrinkage, train passage and braking. The track-bridge interaction is an important parameter in railway bridge design. Measurement campaigns and research projects have been performed to investigate the interaction process and learn how to predict longitudinal forces in the rail and the concrete slab track. For the construction of long bridges on high-speed railway lines, new computational tools, monitoring systems and enhanced verification methods for tolerable rail stresses on bridges had to be developed. In order to take the modified stiffness conditions and recent findings on rail resistance into account, the verification schemes and safety concepts based on monitoring data have to be revised and performance-based methods need to be developed. The target of this article is to present monitoring- and reliability-based assessment methods for the concrete structure-rail interaction using monitoring and non-linear analysis techniques.

x
Schneider, Ronald; Fischer, Johannes; Bügler, Maximilian; Nowak, Marcel; Thöns, Sebastian; Borrmann, André; Straub, Daniel Assessing and updating the reliability of concrete bridges subjected to spatial deterioration - principles and software implementation Structural Concrete 3/2015 356-365 Technical Papers

Kurzfassung

Inspection and maintenance of concrete bridges is a major cost factor in transportation infrastructure, and there is significant potential for using information gained during inspection to update predictive models of the performance and reliability of such structures. In this context, this paper presents an approach for assessing and updating the reliability of prestressed concrete bridges subjected to chloride-induced reinforcement corrosion. The system deterioration state is determined based on a Dynamic Bayesian Network (DBN) model that considers the spatial variability of the corrosion process. The overall system reliability is computed by means of a probabilistic structural model coupled with the deterioration model. Inspection data are included in the system reliability calculation through Bayesian updating on the basis of the DBN model. As proof of concept, a software prototype is developed to implement the method presented here. The software prototype is applied to a typical highway bridge and the influence of inspection information on the system deterioration state and the structural reliability is quantified taking into account the spatial correlation of the corrosion process. This work is a step towards developing a software tool that can be used by engineering practitioners to perform reliability assessments of ageing concrete bridges and update their reliability with inspection and monitoring data.

x
Belletti, Beatrice; Pimentel, Mário; Scolari, Matteo; Walraven, Joost C. Safety assessment of punching shear failure according to the level of approximation approach Structural Concrete 3/2015 366-380 Technical Papers

Kurzfassung

The fib Model Code for Concrete Structures 2010 introduced the concept of levels of approximation (LoA) as a strategy for simplifying the procedures involved in preliminary design stages or the design of non-critical structural elements while still providing the tools for engineers to use state-of-the-art techniques in the assessment of existing structures or in the advanced stages of design for critical structural elements. In this paper, this concept is applied to the determination of the punching shear resistance of reinforced concrete slabs. A procedure is validated for the highest LoA involving non-linear finite element analysis (NLFEA) with multi-layered shell elements and the critical shear crack theory (CSCT). The safety format proposed for use in the safety verification assisted by NLFEA is based on the definition of a global resistance safety factor. A semi-probabilistic approach is followed, based on the assumption of a lognormal distribution for the resistance and on an estimate of its coefficient of variation. This approach is validated by means of a comparison with the results from a probabilistic analysis.
The LoA approach is initially applied to the study of statically determinate slabs supported on one column to verify the effectiveness of the procedure presented here compared with other validated methods available in the literature. The paper concludes with a case study illustrating the application of the proposed procedure to a bridge deck slab and highlighting the benefits of using a higher LoA.

x