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Morgen, Karl; Lüdders, JanDie Butterfly Bridge in KopenhagenStahlbau1/201778-83Fachthemen

Kurzfassung

Zur Anbindung des Innenstadtbereichs von Kopenhagen an das Quartier Christianshavn und an die neue Oper sollte ein Brückenzug für Radfahrer und Fußgänger von der Innenstadt bis zur Oper realisiert werden. Aus einem internationalen Wettbewerb ging der Siegerentwurf für eine zweiflügelige Klappbrücke über den Christianshavn- und Trangraven-Kanal hervor. Wenn beide Flügel aufgeklappt sind, ähnelt das Bauwerk einem überdimensionalen Schmetterling. Aus diesem Grunde nennen es die Kopenhagener Butterfly Bridge. Die Brücke sollte möglichst filigran sein, sich in kurzer Zeit öffnen lassen und sich gut in die historische Umgebung einfügen.

Butterfly Bridge in Copenhagen.
A bridge for cyclists and pedestrians from downtown to the opera had to be realized allowing a connection of Copenhagens' city center area, the quarter Christianshavn and the new opera. A two-wings bascule bridge across Christianshavn respectively Trangraven Canal has been the winner's draft of an international competition. If both wings are opened the construction looks like an oversized butterfly. For this reason the habitants of Copenhagen call it Butterfly Bridge. Targeted was sophisticated design, permitting a quick opening as well as a good integration into the historical surroundings.

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Forschungsprojekt zur Erfassung der Sammelraten von Bauprodukten aus MetallStahlbau1/201783Aktuell

Kurzfassung

Keine Kurzfassung verfügbar.

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Zeman, PeterIndustrie und Stahlbau 4.0 - ein paar Gedanken!Stahlbau1/201784-86Berichte

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, RolandStahlbau - Quo vadis?Stahlbau1/201787-89Berichte

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, GregorBauen im Bestand - Potentiale der Stahl(leicht)bauweiseStahlbau1/201789Aus der Forschung

Kurzfassung

Keine Kurzfassung verfügbar.

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Stritzke, JürgenTasche, M.: Analyse von Entwicklungssträngen im Konstruktiven Ingenieurbau anhand bestehender Brücken und Stabtragwerke im Hochbau in Sachsen, Sachsen-Anhalt und ThüringenStahlbau1/201790-91Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Schmitz, ChristophBrücken und Tunnel der Bundesfernstraßen 2016 - DokumentationStahlbau1/201790Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Svensson, HolgerNebel, B.: Christian Gottfried Bandhauer und der Einsturz der Nienburger Saalebrücke am 6. Dezember 1825Stahlbau1/201792-93Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Möller, EberhardHassler, U. (Hrsg.): Lehrbuchdiskurs über das BauenStahlbau1/201793Rezensionen

Kurzfassung

Keine Kurzfassung verfügbar.

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Uhlemann, JörgAuftakt zur neuen Stahlbau-RichtlinieStahlbau1/201793-94Aktuell

Kurzfassung

Keine Kurzfassung verfügbar.

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Nüsse, GregorEntwicklung der Grundlagen für eine architektonisch qualitätvolle Systembauweise für Fassaden aus Sandwichelementen mit neuartiger Befestigungstechnik im GeschossbauStahlbau1/201795Aus der Forschung

Kurzfassung

Keine Kurzfassung verfügbar.

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Neuer Vorstand der Bayerischen Ingenieurekammer-Bau gewähltStahlbau1/201795-96Firmen und Verbände

Kurzfassung

Keine Kurzfassung verfügbar.

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Termine: Stahlbau 1/2017Stahlbau1/201796Termine

Kurzfassung

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

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Content: Steel Construction 1/2017Steel Construction1/2017Contents

Kurzfassung

Keine Kurzfassung verfügbar.

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Annual table of contents 2016Steel Construction1/2017Annual table of contents

Kurzfassung

Keine Kurzfassung verfügbar.

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Rutner, Marcus P.Editorial: Steel Construction 1/2017Steel Construction1/20171Editorials

Kurzfassung

Keine Kurzfassung verfügbar.

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Yanagisawa, Norifumi; Imagawa, Yusuke; Ohyama, Osamu; Rutner, Marcus; Kurita, AkimitsuFire safety of bridges - methodology supporting design and forensic evaluationSteel Construction1/20172-9Articles

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 Construction1/20179Erratum

Kurzfassung

Keine Kurzfassung verfügbar.

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Hanswille, Gerhard; Bergmann, Reinhard; Bergmann, MarcoDesign of composite columns with cross-sections not covered by Eurocode 4Steel Construction1/201710-16Articles

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, LiDedicated 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 objectivesSteel Construction1/201717-22Articles

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, MarkusDesign of composite bridges with integral abutmentsSteel Construction1/201723-30Articles

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, MarcusRemote monitoring of structural health in compositesSteel Construction1/201731-36Articles

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, JinEvaluation of vehicular dynamic effects for the life cycle fatigue design of short-span bridgesSteel Construction1/201737-46Articles

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, BrankoEvaluating early-age shrinkage effects in steelconcrete composite beam-like structuresSteel Construction1/201747-53Articles

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, MatthiasExperimental and numerical analyses of the effectiveness of high-frequency peening processesSteel Construction1/201754-66Articles

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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