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Autor(en) Titel Zeitschrift Ausgabe Seite Rubrik
Zeman, Peter Industrie und Stahlbau 4.0 - ein paar Gedanken! Stahlbau 1/2017 84-86 Berichte

Kurzfassung

Industrie 4.0 ist in aller Munde. Das Thema wird von der EU gefördert, von Universitäten und Beratern aufgegriffen, es wird definiert und interpretiert. Im Wesentlichen versteht man darunter die Verbindung der industriellen Produktion mit den nun verfügbaren Kommunikations- und Informationstechnologien. Noch kürzer: Die Verbindung von NC-Maschinen mit dem Internet. Und nochmals kürzer: Höherer Automatisierungsgrad.

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Bärtschi, Roland Stahlbau - Quo vadis? Stahlbau 1/2017 87-89 Berichte

Kurzfassung

Stahlbau ist eine unverzichtbare Bauweise. In den letzten Jahren haben sich die wirtschaftlichen Herausforderungen der Stahlbau-Branche jedoch stark verschärft. Globalisierung und Digitalisierung sind Segen und Fluch zugleich. Noch viel stärker sind die Herausforderungen durch die normative Benachteiligung der Stahlbauweise bei den Planungs- und Vertragsnormen und durch die oft ungenügenden Kompetenzen der Planenden im Umgang mit Stahlbau. Demgegenüber ist der Stahlbau als bereits historisch industrialisierte Bauweise im Vorteil gegenüber anderen Bauweisen bei der Digitalisierung und Industrialisierung der Bauprozesse.
Der vorliegende Artikel stellt einige der größten Herausforderungen und Chancen der Stahlbaubranche in einem Überblick zusammen.

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Nüsse, Gregor Bauen im Bestand - Potentiale der Stahl(leicht)bauweise Stahlbau 1/2017 89 Aus der Forschung

Kurzfassung

Keine Kurzfassung verfügbar.

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Stritzke, Jürgen Tasche, M.: Analyse von Entwicklungssträngen im Konstruktiven Ingenieurbau anhand bestehender Brücken und Stabtragwerke im Hochbau in Sachsen, Sachsen-Anhalt und Thüringen Stahlbau 1/2017 90-91 Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Schmitz, Christoph Brücken und Tunnel der Bundesfernstraßen 2016 - Dokumentation Stahlbau 1/2017 90 Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Svensson, Holger Nebel, B.: Christian Gottfried Bandhauer und der Einsturz der Nienburger Saalebrücke am 6. Dezember 1825 Stahlbau 1/2017 92-93 Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Möller, Eberhard Hassler, U. (Hrsg.): Lehrbuchdiskurs über das Bauen Stahlbau 1/2017 93 Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Uhlemann, Jörg Auftakt zur neuen Stahlbau-Richtlinie Stahlbau 1/2017 93-94 Aktuell

Kurzfassung

Keine Kurzfassung verfügbar.

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Nüsse, Gregor Entwicklung der Grundlagen für eine architektonisch qualitätvolle Systembauweise für Fassaden aus Sandwichelementen mit neuartiger Befestigungstechnik im Geschossbau Stahlbau 1/2017 95 Aus der Forschung

Kurzfassung

Keine Kurzfassung verfügbar.

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Neuer Vorstand der Bayerischen Ingenieurekammer-Bau gewählt Stahlbau 1/2017 95-96 Firmen und Verbände

Kurzfassung

Keine Kurzfassung verfügbar.

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Termine: Stahlbau 1/2017 Stahlbau 1/2017 96 Termine

Kurzfassung

Korrosionsschutz und Tragfähigkeit bestehender Stahlwasserbauverschlüsse
39. Stahlbauseminar
VDI-Arbeitskreis Technikgeschichte

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Content: Steel Construction 1/2017 Steel Construction 1/2017 Contents

Kurzfassung

Keine Kurzfassung verfügbar.

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Annual table of contents 2016 Steel Construction 1/2017 Annual table of contents

Kurzfassung

Keine Kurzfassung verfügbar.

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Rutner, Marcus P. Editorial: Steel Construction 1/2017 Steel Construction 1/2017 1 Editorials

Kurzfassung

Keine Kurzfassung verfügbar.

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Yanagisawa, Norifumi; Imagawa, Yusuke; Ohyama, Osamu; Rutner, Marcus; Kurita, Akimitsu Fire safety of bridges - methodology supporting design and forensic evaluation Steel Construction 1/2017 2-9 Articles

Kurzfassung

Dedicated to Prof. Dr. Eng. Akimitsu Kurita on his 70th birthday, in honour of his scientific achievements, guidance and the education of his students.
Fire safety in bridge design is not as developed as fire safety in building design, even though a bridge failure can cause significant economic damage impacting on an area. This paper addresses an unanswered question with regard to fire safety, i.e. the capability to identify the governing failure mode of a bridge subjected to severe fire loading and ranking the regions of greatest fire exposure risk. Hence, this proposed methodology is also expected to support forensic work identifying the failure mode where a bridge has failed due to a severe fire, as will be shown using the 9-Mile Road Overpass collapse as an example. In an effort to mitigate fire damage, the fire protection panel (FFP) is introduced, which is part of a sacrificial structure shielding the bridge superstructure from exposure to fire from underneath.

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Lindner, J.; Kuhlmann, U.; Just, A.: Verification of flexural buckling according to Eurocode 3 part 1-1 using bow imperfections. Steel Construction 1/2017 9 Erratum

Kurzfassung

Keine Kurzfassung verfügbar.

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Hanswille, Gerhard; Bergmann, Reinhard; Bergmann, Marco Design of composite columns with cross-sections not covered by Eurocode 4 Steel Construction 1/2017 10-16 Articles

Kurzfassung

Dedicated to Prof. Dr. Akimitsu Kurita on his 70th birthday
The use of composite columns with special types of sections e.g. concrete filled tubes with massive inner cores became very popular in the last years. These sections are not in the scope of the simplified design method of Eurocode 4. The paper deals with a design proposal for columns with those sections based on the general design method and it shows how this method can also be used extending the scope of the simplified design method in Eurocode 4.

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Mensinger, Martin; Huang, Li Dedicated to Prof. Dr. Akimitsu Kurita on his 70th birthday Optimized preliminary structural design of steel composite buildings using the Sustainable Office Designer - Comparing optimizations to satisfy different objectives Steel Construction 1/2017 17-22 Articles

Kurzfassung

Preliminary structural design is used for estimating and comparing design alternatives. It is mainly a manual procedure based on experience and documented in the form of design tables or charts. In an effort to automate this procedure for steel composite office buildings, the Sustainable Office Designer (SOD) has been developed as a SketchUp plug-in. It can generate optimized preliminary structural designs for given rectangular boundary shapes and employs a rapid approximate calculation instead of an expensive structural analysis. Steel columns are used and verified according to DIN EN 1993-1-1, while beams are designed as composite members and verified to DIN EN 1994-1-1. Pre-calculated design tables are used for slab systems. Optimization results are obtained and compared for different objectives, e.g. life cycle assessments (LCA) and costs.

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Pak, Daniel; Bigelow, Hetty; Feldmann, Markus Design of composite bridges with integral abutments Steel Construction 1/2017 23-30 Articles

Kurzfassung

Dedicated to Prof. Dr. Akimitsu Kurita on his 70th birthday
Bridges are of vital importance to Europe's infrastructure and composite bridges have already become a popular solution in many countries, representing a well-established alternative to concrete bridges. Their competitiveness depends on several factors such as site conditions, local costs of materials and labour and the contractor's experience. One outstanding advantage of composite bridges compared with concrete bridges is that the steel girders can carry the weight of the formwork and the fresh concrete during casting. Another major advantage is savings in construction time, which reduces disturbance to traffic and, consequently, saves money for the contractor, but even more so for road users - a fact that has been neglected for a long time. Recently, this factor has increasingly attracted attention as the latest studies show the need to take into account not only simple production costs, but also construction time and maintenance costs when deciding on a specific bridge type. All these needs are met by integral abutment bridges as well. In addition, this bridge type has the potential to outclass traditional bridges with transition joints as it not only reduces production and maintenance costs, but saves on economic and socio-economic costs as well.

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Golchinfar, Behnoush; Donskoy, Dimitri; Pavlov, Julius; Rutner, Marcus Remote monitoring of structural health in composites Steel Construction 1/2017 31-36 Articles

Kurzfassung

Dedicated to Prof. Dr. Eng. Akimitsu Kurita on his 70th birthday, in honour of his scientific achievements, guidance and the education of his students.
This paper explores a new interdisciplinary method for internal damage detection and tracking in composite materials using thermo-chemical sensing. A micro-sized network of strings is interwoven into the composites. Each string consists of a pair of tubes containing one of two different non-polar reactants. A local defect within the composites causes straining and cracking of the tube shell, resulting in direct contact between the two non-polar reactants. The latter undergo a chemical reaction resulting in a polar product. When exposed to a microwave energy source, a polar product heats up dramatically within seconds in comparison to the surrounding composite material or the non-polar reactants. This localized thermal signature can be rendered visible by an infrared camera.
This study summarizes the findings of an in-depth computational and experimental study of this sensing technology which is expected to be applicable across industries using composites, among them aerospace, automotive, offshore and bridge engineering. Potential applications in steel offshore or steel bridge engineering involve using composite sensing patches to cover fatigue fracture-critical components. Defects initiating on the steel substrate surface are expected to be sensed on demand with this proposed sensing technology.

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Zhang, Wei; Wu, Mengxue; Zhu, Jin Evaluation of vehicular dynamic effects for the life cycle fatigue design of short-span bridges Steel Construction 1/2017 37-46 Articles

Kurzfassung

Dedicated to Prof. Dr. Akimitsu Kurita on his 70th birthday
In current bridge design codes or specifications, the dynamic effects of vehicles are considered by using a dynamic amplification factor (DAF) or dynamic load allowance (IM). However, a DAF is defined based on the ratio of the maximum dynamic load responses to the static load responses, and it is more appropriate for maximum value-based strength design. For fatigue design, stress cycles other than the maximum stress ranges could contribute to fatigue damage accumulations. Meanwhile, on the capacity side, a reduction in fatigue strength due to structural deterioration, which is related to local environmental conditions, including temperature, humidity, etc., could introduce more uncertainties into structural safety and reliability evaluation. However, such multiple stress range effects and structural deterioration are not included in current bridge fatigue design. To evaluate the vehicular dynamic effects for the life cycle fatigue design of short-span bridges, the present study proposes a new dynamic amplification factor for life cycle bridge fatigue design (DALC), which is defined as the ratio of the life cycle nominal live load stress range to the maximum static stress range. In contrast to other traditionally defined dynamic factors, the newly defined DALC includes information about both the structural loading and the structural capacity. Therefore, the multiple stress cycles from vehicle-induced vibrations and the structural deteriorations from road surface conditions and corrosion of structural members are included. Parametric studies of DALC were carried out for multiple parameters and variables in the bridge's design life cycle, for instance, possible faulting days in each year, fatigue strength exponent, corrosion parameters and corrosion level. The stochastic properties and uncertainties from these variables are also considered in the DALC calculation.

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Li, Xi; Glisic, Branko Evaluating early-age shrinkage effects in steelconcrete composite beam-like structures Steel Construction 1/2017 47-53 Articles

Kurzfassung

Dedicated to Prof. Dr. Akimitsu Kurita on his 70th birthday
The shrinkage of concrete is a material phenomenon that occurs due to the reduction in the concrete's volume over time. In composite beam-like structures, the shrinkage of concrete elements affects strains and stresses in the overall composite section. The ability to identify and estimate early-age shrinkage in beam-like structures allows the creation of a baseline for strain-based structural health monitoring, and enables a more thorough understanding of structural performance and condition. In this project, the early-age shrinkage behaviour of steel-concrete composite beam structures was studied with an integrated approach using monitoring data from a reduced-scale test structure and simulation results from finite element analysis. A simplified analytical expression was developed to study further the range of magnitude of shrinkage in the concrete slab and the resultant strain distribution in steel girders. The goal of this paper is to create an innovative, comprehensive and widely applicable procedure that identifies and quantifies early-age shrinkage in steel-concrete composite beam-like structures and its effects on the overall composite cross-section.

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Mangerig, Ingbert; Kroyer, Robert; Koller, Matthias Experimental and numerical analyses of the effectiveness of high-frequency peening processes Steel Construction 1/2017 54-66 Articles

Kurzfassung

Dedicated to Prof. Dr. Akimitsu Kurita on his 70th birthday
To assess fatigue behaviour, experimental tests were conducted on material specimens furnished with hammer peening tracks, with two different types of treatment being employed. The results of fatigue tests on treated specimens were compared with those of untreated specimens and assessed. Non-linear analyses with the FE program ADINA, taking into account the stress-distortion behaviour of a material subjected to fatigue, were conducted as part of the test concept, specimen analysis, evaluation of the test results and probing the mode of action of both techniques.

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Wardenier, Jaap; de Vries, Peter; Timmerman, Gerrit Evaluation of cracks in an offshore crane runway girder Steel Construction 1/2017 67-71 Articles

Kurzfassung

This paper deals with the evaluation of fatigue cracks in a box type radial crane runway girder with full penetration welds between the web and flange. After 20 years of service fatigue cracks were observed which were initiated in the flange at the toe of the full penetration weld with the web. The observed cracks in the crane runway girder vary in length from a few mm to 330 mm with a summation of the lengths of all observed cracks being 750 mm, on a total length of 56000 mm, thus being only 1.3 %.
The investigation consists of the fatigue analysis described in this paper and additional experimental investigations with scale tests of approximately 1:2 on equivalent I sections with a concentrated load and with a line load to investigate whether cracks stop when they have grown through the residual tensile stress field. For this analyzed crane runway girder with multi-layered full penetration welds and with small cracks at the weld toes in the flange, based on EN 1993-6 the damage would be 1.0 for a design class 98 which is not far from the “class” 92 found by Kuhlmann et al, [1] for tests with rolling wheels, however, related to weld failures from the root of not fully penetrated fillet welds in combination with crack initiations at the weld toe.

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Hauptenbuchner, Johannes Design and construction of the complex steel structure for the Amager Bakke waste-to-energy plant Steel Construction 1/2017 72-79 Reports

Kurzfassung

Amager Bakke (English: Amager slope) is the name of Copenhagen's new waste-to-energy-plant located on the Amager peninsula. Once finished, it will be one of the largest incinerators in northern Europe and will be used for the combined production of district heat and electricity. On top of the waste-to-energy plant there will be a landscaped park featuring artificial ski slopes and a viewing platform. The support structure is mainly formed by a steelwork. The model-based design and construction of the complex, three-dimensional steel structure proved to be a challenging task for all the engineers and companies involved.

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