Artikeldatenbank
Autor(en) | Titel | Zeitschrift | Ausgabe | Seite | Rubrik |
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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 |
KurzfassungIn Memoriam of Prof. Dr. Bernt Johansson x | |||||
Schiborr, Markus; Stranghöner, Natalie | Application of direct tension indicators in preloaded bolted connections | Steel Construction | 2/2017 | 176-188 | Articles |
KurzfassungThe direct tension indicator (DTI) method is specified in EN 1090-2 as one of the tightening procedures for preloading bolting assemblies to a specified level of preload. As Germany so far has no experience of using the DTI method, recent experimental and theoretical investigations were carried at the Institute for Metal and Lightweight Structures, University of Duisburg-Essen, Germany, with the main focus being the loadbearing behaviour of preloaded bolting assemblies with DTIs under external axial tensile loading. Whereas tension connections employing preloaded bolting assemblies are quite common in Germany, in the UK, for example, bolted connections are preferably designed as shear connections, as far as is known. As a result of the investigations presented below, it can be summarized that, under tensile loading especially, preloaded bolting assemblies with DTIs might suffer from a severe loss of preload - something that should be considered in preloaded bolted connections in which the preload is taken into account in the design of the connections, e.g. in slip-resistant connections, to activate the slip resistance, and in tension connections subjected to fatigue. Based on these investigations, recommendations have been formulated for preloaded bolting assemblies with DTIs under external axial tensile loading. x | |||||
Gonçalves, Rodrigo; Camotim, Dinar; Peres, Nuno | Application of Generalised Beam Theory to curved members with circular axis | Stahlbau | 4/2018 | 345-354 | Fachthemen |
KurzfassungDedicated to Prof. Dr.-Ing. habil. Joachim Lindner on the occasion of his 80th birthday x | |||||
Le, Hanh Quang; Do, Phong Ngoc | Application of inclined big-diameter jet grouting for urban tunnel construction in Vietnam | Geomechanics and Tunnelling | 3/2023 | 312-319 | Topics |
KurzfassungUrban tunnel construction is often performed in congested areas with many buildings and historical structures nearby. With respect to developing countries, such as Vietnam, the lack of as-built drawings of existing buildings is a big challenge for urban tunnel development. There are a lot of private buildings in downtown are low rise, with many kinds of shallow foundations (from bamboo bar, brick mat, lean concrete mat, pre-casted concrete piles...) that add to the challenge of finding correct data. Consequently, one must find suitable and reasonable technology for the soil strengthening works in order to prevent the harmful impacts to the third -party properties and the tunnel structure itself. This paper introduces the inclined big-diameter jet-grouted column (iBDJ) technique that was recently applied with success in Hanoi Metro Line No3 project in Vietnam. This technique for protecting historical sensitive buildings that are in fuzzy of foundation information can be extended to urban tunnel projects in Vietnam and other countries which have similar conditions. x | |||||
Palla, R.; Leitner, S. | Application of jet grouting on the various contracts in the Lower Inn Valley / Anwendung des Düsenstrahlverfahrens auf den verschiedenen Baulosen im Unterinntal | Geomechanics and Tunnelling | 6/2009 | 693-708 | Topics |
KurzfassungThe jet grouting process is being applied in a number of ways never attempted before as part of the four-track improvement of the Lower Inn Valley line. In addition to the production of waterproof invert, ground improvement to reduce settlement and for the homogenisation of the excavation cross-section in mixed face sections, special mined solutions in particular have been made possible by jet grouting. A horizontal jet grout screen for advance tunnel support was produced for the first time under compressed air conditions; the protection of a complete ringshaped jet-grouted surround also made a mined compressed air drive possible. The jet grouting process was also used to carry out sealing blocks to enable the mined connection of various mechanically tunnelled rescue tunnels to the main tunnel driven by a TBM. x | |||||
Kawai, Kenji | Application of performance-based environmental design to concrete and concrete structures | Structural Concrete | 1/2011 | 30-35 | Articles |
KurzfassungThe environmental impact and the effect of its reduction must be assessed quantitatively if we are to show clearly the effect of lowering the environmental impact of concrete and concrete structures. One of the quantitative evaluation methods is to regard and verify the environmental impact of concrete and concrete structures as an environmental performance in accordance with the performance-based design method. This article briefly describes the performance-based environmental design method prepared by fib Commission 3 TG3.6 and shows an example of the application of the design method applied to a concrete structure. x | |||||
Latal, Christine; Bach, Holger; Thuro, Kurosch | Application of test methods for tool wear in quality control of railway ballast / Anwendung von Werkzeugverschleißtests zur Qualitätssicherung von Bahnschotter | Geomechanics and Tunnelling | 3/2020 | 327-337 | Topics |
KurzfassungThe resistance of aggregates to abrasion estimated by the Micro-Deval test is an important mechanical parameter for aggregates used as railway ballast. At present, testing intervals are sparse due to the cost of the tests. Cost-efficient testing methods would be greatly appreciated. A detailed study of the applicability of alternative testing methods, as commonly used to estimate the potential of a rock or soil to cause wear to a tool (LCPC Abroy test and Cerchar test), demonstrates the advantage of implementing these testing methods in addition to the recommended tests. x | |||||
Maruhn, Liliia; Rünger, Carsten | Application of the Extrapolation standard DIN EN 15080-12 / Anwendung der Extrapolationsnorm DIN EN 15080-12 | Mauerwerk | 6/2018 | 439-355 | Berichte |
KurzfassungFor highly insulated clay masonry units, fire resistance is verified in the course of the approval procedure through fire tests according to harmonised European standards. The fire resistance class in the relevant national technical approval is then based on these tests. Classification according to these testing standards in combination with the extrapolation standard DIN EN 15080-12 represents a justifiable option for the fire resistance classification of masonry walls according to harmonised European standards. x | |||||
Handke, Dieter | Application of the holistic observation method on shield tunnel drives as a means of preventing disputes and conflict reduction in case of interruptions / Anwendung der ganzheitlichen Beobachtungsmethode bei Schildvortrieben als Mittel zur präventiven Streitvermeidung und Konfliktreduzierung bei Störsituationen | Geomechanics and Tunnelling | 4/2014 | 362-379 | Topics |
KurzfassungThe consistent application of the observation method on shield tunnel drives can make a considerable contribution to preventative dispute avoidance and conflict reduction when issues occur. The observation method should include not only the monitoring and analysis of mechanical process data such as machine data, control parameters and data from the geotechnical instrumentation but also process control as the tunnel advances, which is documented in the following quality assurance documents: explanatory report, machine concept, incident analysis, specification, tunnelling machine handbook and the tunnelling plan before tunnelling and report after completion. This should be interpreted as a unit and is defined as the holistic observation method. x | |||||
Moritz, B.; Schubert, W. | Application of the observational method in geotechnical safety management / Die Umsetzung der Beobachtungsmethode im Rahmen des Geotechnischen Sicherheitsmanagements | Geomechanics and Tunnelling | 3/2009 | 269-281 | Topics |
KurzfassungThe uncertainties in the ground model and the subsequent design of tunnels call for an observational approach. To enable the safe and economical tunnelling of underground infrastructure projects with shallow overburden, a safety management plan has to be implemented. The successful application of the observational method is based on a comprehensive definition of the expected behaviour by the designer and the verification of the actual conditions by the site geotechnical engineer during construction. Advanced tools and methods for monitoring data evaluation assist in the continuous interpretation of the system behaviour, enable timely detection of deviations and check against the warning and alarm criteria. The paper shows the application of the observational method as defined in Eurocode 7 as part of a Safety Management Plan through two case histories from OeBB tunnel projects. x | |||||
Bakeer, Tammam | Application of the partial safety concept for complex non-linear calculations through the example of Friedrichswerder Church in Berlin / Anwendung des Teilsicherheitskonzeptes für komplexe nichtlineare Berechnungen am Beispiel der Friedrichswerderschen Kirche in Berlin | Mauerwerk | 1/2018 | 3-14 | Fachthemen |
KurzfassungNon-linear analysis of special structures is routine practice in every engineering design office. Current code provisions provide no sufficient regulations or clear procedures on how to use partial safety factors in non-linear analyses. The present paper introduces some specific problems of masonry structures from practice. x | |||||
Städing, A.; Krocker, T. | Application of the partial safety factor concept for the structural design of tunnels in Germany - Anwendung des Teilsicherheitskonzepts beim Standsicherheitsnachweis von Tunneln in Deutschland | Geomechanics and Tunnelling | 1/2010 | 48-58 | Topics |
KurzfassungThe calculation and design of engineering structures in Germany has changed from a global safety factor concept to a partial safety factor concept introducing a number of partial safety factors. The report presents the current rules for transport tunnels and explains the new method of structural design and serviceability by means of a practical example. x | |||||
Spiegl, Markus; Galler, Robert; Sander, Philip | Application of the ÖGG guideline for cost estimates on international megaprojects / Kostenermittlung für internationale Großprojekte auf Basis der ÖGG-Richtlinie | Geomechanics and Tunnelling | 6/2018 | 680-692 | Topics |
KurzfassungTransportation infrastructure projects are characterised by long project phases, a high number of project participants, hard-to-predict influences and their uniqueness. The new version of the ÖGG “Guideline for the Cost Determination for Transportation Infrastructure Projects” builds on experience of the previous version and sets new accents in practical applicability, e.g. through the use of risk fact sheets. Structured cost and risk management is no longer conceivable without adequate software. The integral cost and schedule analysis is a further step towards improved cost and project schedule stability. The guideline was published in English at the same time, which supports its use in international consulting. x | |||||
Wendeler, Corinna; Bühler, Yves; Bartelt, Perry; Glover, James | Application of three-dimensional rockfall modelling to rock face engineering / Anwendung eines 3D-Steinschlag Modells für Felssicherungen | Geomechanics and Tunnelling | 1/2017 | 74-80 | Topics |
KurzfassungMany problems in engineered rock faces involve evaluation of the efficiency of rockfall mitigation measures, specifically rockfall dams, embankments and catch nets. Existing rockfall trajectory models are not suited for this purpose because they do not consider the non-linear dynamics of rock motion, which is highly dependent on rock size, shape and impact configuration. In this paper, we discuss the application of the new 3D rockfall modelling tool RAMMS::Rockfall, which computes rock-ground interactions using hard-contact impact mechanics. The model is applied to evaluate the effectiveness of a rockfall bank at the Geobrugg/WSL test site in Walenstadt, Switzerland. x | |||||
Meyer, Jürgen | Applied Acoustics: Concepts, Absorbers, and Silencers for Acoustical Comfort and Noise Control. Alternative Solutions - Innovative Tools - Practical Examples. Von: H. V. Fuchs | Bauphysik | 1/2014 | 44-45 | Bücher |
Blanchard, J.; Bussell, M.; Marsden, A.; Lewis, D. | Appraisal of existing ferrous metal structures (Bewertung von historischen Stahl- und Eisenkonstruktionen). | Stahlbau | 6/1997 | 333-345 | Fachthemen |
KurzfassungDie Notwendigkeit, historische Bausubstanz in unseren Städten wie Landschaften zu bewahren, wird eine zunehmend wichtigere und vordringlichere Aufgabe der zuständigen Behörden und der Öffentlichkeit. Viele unserer historischen Gebäude basieren auf Stahl- und Eisenkonstruktionen, die über Jahrzehnte einwandfrei ihren Dienst erwiesen haben. Von daher besteht kein Grund, sie durch zeitgemäße Konstruktionen zu ersetzen, sofern sie fachgerecht gewartet, unterhalten und gegebenenfalls repariert werden. Dies jedoch gründet sich auf dem vollständigen Verständnis ihrer Konstruktionsweisen. So kann möglicherweise eine der historischen Konstruktionen adäquate Sanierung mit Hilfe moderner Methoden erfolgen. Der Aufsatz berichtet von Erfahrungen im englischen Bauwesen, die Bauingenieure mit historischen Stahl- und Eisenkonstruktionen sammeln konnten; er beschreibt deren besondere Entwurfscharakteristika und deren Würdigung und Anwendung durch Bauingenieure. Vor der Folie konstruktionshistorischer Entwicklung wird das Materialproblem sowohl aus der Perspektive der Bemessung als auch der Qualitätssicherung des Fertigungsprozesses gelesen. x | |||||
Approach to the rotational stiffness of thin-walled cold-formed Z-profile purlins | Steel Construction | 2/2021 | 127 | Editor's Recommendations | |
Kirschke, D. | Approaches to technical solutions for tunnelling in swellable ground / Lösungsansätze für den Tunnelbau in quellund schwellfähigem Gebirge | Geomechanics and Tunnelling | 5/2010 | 547-556 | Topics |
Kurzfassung“Swelling” is generally taken to mean the expansion of a rock due to water absorption. The main intention of this paper is to point out the significant difference between the swelling of clay and claystone (Tonstein) on one hand and the swelling of claystone and marl containing anhydrite on the other. In the opinion of the author, these differences are so large that they should be described as different phenomena. Leopold Müller has already proposed the introduction of different German terms: “Quellen” for clay and “Schwellen” for anhydrite. Unfortunately, this terminology has not caught on, probably because the word swelling is used in English for both processes. The resulting merging has hindered research into anhydrite swelling for decades, and the development of calculation methods and technical solutions for tunnelling in anhydrite-bearing ground is still at an early stage. In contrast, the problem of clay swelling can be regarded as largely solved. x | |||||
Appropriate spring stiffness models for the end supports of bolted angle compression members | Stahlbau | 3/2020 | 202 | Empfehlungen der Redaktion | |
Kettler, Markus; Unterweger, Harald; Harringer, Thomas | Appropriate spring stiffness models for the end supports of bolted angle compression members | Steel Construction | 4/2019 | 291-298 | Articles |
KurzfassungSelected, extended paper from the SDSS 2019 special session ECCS/TC8 - Structural Stability x | |||||
Approvals adapted in line with Eurocode 6 / Zulassungen auf Eurocode 6 angepasst | Mauerwerk | 1/2015 | 73 | Firmen und Verbände | |
AQS-Geschäftsführerseminar | Stahlbau | 4/1998 | 330 | Termine | |
King, Mike; Mungall, Gordon | Aquatics Centre, London 2012 Olympic and Paralympics Games | Bautechnik | 10/2012 | 701-711 | Berichte |
KurzfassungThe Aquatics Centre is a centrepiece of the London 2012 Olympic and Paralympic Games. Already now before the opening of the Games it is regarded as an iconic legacy building. The building comprises a 50 m competition pool and 25 m dive pool under the wave-form roof of the main pool hall. A 50 m training pool is situated beneath the Olympic Park entrance plaza structure which is built integrally with the rest of the building. x | |||||
von Wölfel, W. | Aquädukte - die großartigen Bogenreihen römischer Fernwasserleitungen. | Bautechnik | 11/1996 | 792 | Berichte |
Linkwitz, K. | Arbeit auf Ehrenwort - Fritz Leonhardt und die Münchner Olympiadächer | Bautechnik | 7/1999 | 608-614 | Berichte |