Journal articles
Author(s) | Title | Journal | Issue | Page | Category |
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Petraschek, Thomas; Walter, Michael; Haberler-Weber, Michaela | Ă–BB Infrastructure as a driver of innovation - Perspectives on digitisation and automation in railway infrastructure / Die Ă–BB-Infrastruktur AG als Innovationstreiber - Ein Ausblick zur Digitalisierung und Automatisierung in der Bahninfrastruktur | Geomechanics and Tunnelling | 6/2017 | 748-752 | Topics |
AbstractMobility is a basic need for people and society, so the steady growth of transport need will continue. The railway system is always in competition with other modes of transport and therefore has to improve productivity - within European and national requirements and specifications. The demands and wishes of customers are also changing; issues like industry 4.0, climate change, energy efficiency or digitisation are increasingly significant. ÖBB-Infrastruktur AG is responsible for planning, building and operating the railway infrastructure in Austria. Current trends like digitisation and automation can show the way for the further strategic orientation. Innovation in all areas of the railway system is necessary to reach the focused goals. This can be obtained by participation in European or national research projects or by specific research on current issues. Digitisation, big data, visualisation and automation are promising solutions for the identified fields of activity. x | |||||
Gehwolf, Paul; Wenighofer, Robert; Galler, Robert | Current status of tubbing research - Insight into the research activities at the Chair of Subsurface Engineering / Aktueller Stand der TĂĽbbingforschung - Ein Einblick in die Forschungsarbeiten am Lehrstuhl fĂĽr Subsurface Engineering | Geomechanics and Tunnelling | 6/2017 | 753-759 | Topics |
AbstractFor the verification of the load bearing and deformation behavior of segmental lining under exactly known conditions a test rig was designed and built in cooperation between the Montanuniversity of Leoben - Chair of Subsurface Engineering and the Austrian Federal Railway. On the basis of tests performed with steel-reinforced precast elements, first statements can be made in relation to the load bearing and deformation behaviour of the tested segments. Furthermore, a camera-based system for crack detection is presented. A finite-element model has also been set-up and this model has been validated using the test data. x | |||||
Wenighofer, Robert; Six, Gerhard; Galler, Robert; Chmelina, Klaus | Cameras for digitized 3D geological documentation of the tunnel face from cutterheads of TBMs / Ortsbrustkameras zur digitalen geologischen 3D-Dokumentation aus dem Bohrkopf von TBM - Stand der Entwicklungsarbeiten | Geomechanics and Tunnelling | 6/2017 | 760-766 | Topics |
AbstractA camera system has been developed, which can cover the full face when mounted in disc housings, thus imaging the tunnel face to provide greater transparency for client and contractor and to provide more objective geological assessment. No manholes or extra apertures are needed to accommodate the camera system. The images recorded are used to generate a 3D reconstruction of the face, revealing depths and volumes of breakouts. For the determination of the orientation of discontinuities, plugins based on .NET have been developed to enable the use of AutoCAD or Civil3d of Autodesk for the geological assessment of the face. The contribution describes the application, images and computed results of the camera system based on its regular use over a period of more than 20 months. x | |||||
Reinhold, Chris; Schwarz, Christian; Bergmeister, Konrad | Development of holistic prognosis models using exploration techniques and seismic prediction / Die Entwicklung holistischer Prognosemodelle mit Vorauserkundungen und seismischen Messungen | Geomechanics and Tunnelling | 6/2017 | 767-778 | Topics |
AbstractAs part of the Brenner Base Tunnel project, the currently running Tulfes-Pfons construction lot includes a stretch of the exploratory tunnel (ET), which has a length of 15 km and is being bored by a gripper TBM. During this tunnelling work, a diverse and broad set of exploration techniques is being used. Although it is an exploratory tunnel, the tunnel is subject to the same constraints as a performance heading. The choice of exploration techniques was made with regard of the capability to smoothly integrate them into regular tunnelling in order to not create further downtime. The exploration techniques are useful for the current ET but also to produce a forecast for the subsequent main tunnels (MT). The geological investigation is undertaken by face and peripheral mapping as well as by percussion drilling ahead of the machine. The geotechnical exploration is carried out by analysing the TBM parameters and the system behaviour, and analysing the percussion drilling. The exploration concept is completed with the geophysical reflection seismic method. All these exploration methods have different sensitivities, exploration ranges and directions, strengths and weaknesses, so they complement one another. This paper assesses the exploration techniques based on the experience until now. A case study of one fault zone is presented to show how the different exploration methods interact and contribute to a holistic prognosis model. x | |||||
Schachinger, Tobias; Sperger, Lukas; Heissenberger, Roman; Wagner, Oliver Kai | Task Force Drainage (TFD) - The project for life after / Task-Force Dränagen (TFD) - Das Projekt für das Leben danach | Geomechanics and Tunnelling | 6/2017 | 779-787 | Topics |
AbstractThe ÖBB-Infrastruktur AG currently has several very large tunnelling projects in Austria. However, not only the construction itself is important for the client, but also that the tunnels can be used as efficiently as possible during their entire service life. Regarding water pressure-relieved tunnel structures, the drainage system is usually the most expensive and time-consuming maintenance activity. For this reason a specialized project, the Task Force Drainage (TFD), was launched to deal with drainage systems during construction and operation. The objectives of the TFD are primarily the concentration of innovation regarding the drainage system, the optimization and systematization of the maintenance process and the specification of necessary components and technologies. Examples are the development of new flushing systems for the drainage system, the development of optimized pipe materials and a uniform inventory of existing drainage systems. These examples are explained in the article. x | |||||
Product Information: Geomechanics and Tunnelling 6/2017 | Geomechanics and Tunnelling | 6/2017 | 788-789 | Product Informations | |
AbstractThe NorthConnex Tunnel - DSI supplies High Quality Products for Australia's longest Road Tunnel / Der NorthConnex Tunnel - DSI liefert hochwertige Produkte für den längsten Straßentunnel Australiens x | |||||
Diary of Events: Geomechanics and Tunnelling 6/2017 | Geomechanics and Tunnelling | 6/2017 | 789-790 | Diary of Events | |
Imprint: Geomechanics and Tunnelling 6/2017 | Geomechanics and Tunnelling | 6/2017 | 790 | Imprint | |
Inhalt: Mauerwerk 6/2017 | Mauerwerk | 6/2017 | Inhalt | ||
Meyer, Udo | Masonry fulfils a wide range of requirements / Mauerwerk erfüllt vielfältige Anforderungen | Mauerwerk | 6/2017 | 347 | Editorials |
Rudisch, Andreas; Dunjic, Viktor; Kolbitsch, Andreas | Investigation of horizontal floor acceleration in historic masonry buildings / Untersuchung der horizontalen Stockwerksbeschleunigungen historischer Mauerwerksbauten | Mauerwerk | 6/2017 | 348-356 | Fachthemen |
AbstractEarthquakes with comparatively low magnitudes can lead to serious damage to non-structural components of historical masonry buildings, such as architectural facade elements. In order to assess the vulnerability of non-structural components, the horizontal floor acceleration is used. This depends on the dynamic characteristics of the building, the ground acceleration and dissipative effects. In the present article comprehensive probabilistic FE time history analyses with different hazard levels have been carried out for selected masonry structures. In order to take induced non-linearities into account, a macroscopic material model for historic masonry was calibrated and applied. It was shown that the chosen methodology enables the determination of the distribution of floor acceleration over the building height for historic masonry structures. In addition, due to the detailed scope, a robust comparison with the simplified design methods is possible. Finally, the applicability of the simplified design approach according to EN 1998-1 [1] is discussed for the investigated case. x | |||||
Söhnchen, Andreas; Schoch, Torsten | Complex building element monitoring - interior insulation in practical test / Komplexes Bauteilmonitoring - Innendämmung im Praxistest | Mauerwerk | 6/2017 | 357-368 | Fachthemen |
AbstractGermany has set ambitious targets at a national level for the reduction of emissions with the Energiekonzept 2010: by 2020, emissions should be reduced by at least 40 % compared to 1990. By 2050, a reduction of emissions by 80 to 95 % (compared to 1990) is intended [1]. In order to even come near to these targets, the energy-related refurbishment of existing buildings has been gaining significance for some years. Facades that are worth preserving or under listed building protection limit the upgrading options on the outside, but interior insulation solutions are as ever regarded with suspicion by some protagonists. The following article reports on the building physics support for a particularly challenging refurbishment project. x | |||||
Matthias Frederichs is the new managing director of the federal association of the German brick industry / Matthias Frederichs neuer Hauptgeschäftsführer des Bundesverbandes der Deutschen Ziegelindustrie | Mauerwerk | 6/2017 | 368 | Firmen und Verbände | |
Hofmann, Jan; Welz, Georg | Load-bearing behaviour and characteristic load-bearing capacity of injection anchors in masonry / Tragverhalten und charakteristische Tragfähigkeit von Injektionsdübeln in Mauerwerk | Mauerwerk | 6/2017 | 369-384 | Fachthemen |
AbstractFixings with injection anchors are post-installed chemical fastenings, which are generally described as bonded anchors. For bonded anchors in masonry, only injection systems are approved, since safe application of capsule systems cannot be guaranteed due to the presence of cavities in the masonry, for example due to joints, grip holes or the use of perforated blocks. x | |||||
Lönhoff, Moritz; Sadegh-Azar, Hamid; Meyer, Udo | Investigation of the seismic out-of-plane behaviour of unreinforced masonry walls / Untersuchungen zum Out-of-Plane-Verhalten von unbewehrten Mauerwerkswänden bei Erdbeben | Mauerwerk | 6/2017 | 385-390 | Fachthemen |
AbstractThe structural stability of unreinforced masonry (URM) walls has to be guaranteed not only under static (permanent and live) loads but also under earthquake loads. Loads transverse to the plane (out-of-plane) often have a decisive influence on the load-bearing capacity. In practical applications, simplified methods from codes, guidelines and literature are often used to analyse and evaluate the out-of-plane capacity of load-bearing and non-load-bearing URM walls. The results of these simplified methods can be significantly conservative and inaccurate since essential influencing effects are neglected. For many existing buildings, the simplified methods underestimate the capacity, which leads to cost-intensive retrofitting and strengthening measures or complete replacement by other wall systems. x | |||||
"Architects' Darling" in Gold for Wienerberger / "Architects' Darling" in Gold für Wienerberger | Mauerwerk | 6/2017 | 390 | Firmen und Verbände | |
Gigla, Birger | Protection of masonry veneer walls against driving rain / Schlagregenschutz von Verblendmauerwerk | Mauerwerk | 6/2017 | 391-398 | Fachthemen |
AbstractThe present article reports on investigations into the protection of masonry veneer walls according to Eurocode 6 against driving rain including consideration of window openings through rain exposure tests on eight test samples with different waterproofing variants. The results were published in the paper “Resistance of Masonry Veneer Walls against Rain Penetration” at the 13th Canadian Masonry Symposium (Halifax, Canada, June 4th - June 7th 2017). At the conference, the paper was awarded the C. T. Grimm-Award for the best publication worldwide on the durability of masonry. It is summarised in excerpts below. x | |||||
Stimmeder, Gottfried; Ecklmayr, Rudi; Prommer, Norbert | Burglary resistance of thermal insulating clay unit masonry (RC 3) / Einbruchwiderstand von wärmedämmendem Ziegelmauerwerk (RC 3) | Mauerwerk | 6/2017 | 399-402 | Fachthemen |
AbstractIn 2017 the Austrian Clay Masonry Industry carried out a test of burglary resistance according to ÖNORM EN 1627 for the first time. A window was fixed in a highly insulated clay masonry wall (with declared compressive strength of the clay units 7.5 N/mm2). Resistance class RC 3 was verified for the window, the fixing to the wall and the wall itself. x | |||||
Veranstaltungen: Mauerwerk 6/2017 | Mauerwerk | 6/2017 | 403-409 | Veranstaltungen | |
AbstractSpecialist seminar on multi-leaf masonry / Fachseminar Mehrschaliges Mauerwerk x | |||||
Fritz Höger Prize 2017 / Fritz-Höger-Preis 2017 | Mauerwerk | 6/2017 | 409-410 | Wettbewerbe | |
Jodidio, P.: 100 Modern Brick Buildings. / 100 Zeitgenössische Bauten aus Backstein. | Mauerwerk | 6/2017 | 411 | Rezensionen | |
Graefe; R.: Kellersanierung - Ratgeber für die Praxis. Schäden erkennen, bewerten, sanieren. | Mauerwerk | 6/2017 | 411-412 | Rezensionen | |
Termine: Mauerwerk 6/2017 | Mauerwerk | 6/2017 | 413-414 | Termine | |
AbstractInvestigation, assessment and repair of historic masonry / Untersuchen, Bewerten und Instandsetzen von historischem Mauerwerk x | |||||
Inhalt: Stahlbau 6/2017 | Stahlbau | 6/2017 | Inhalt | ||
Classen, Martin; Hegger, Josef | Modelle fĂĽr das nichtlineare Verformungsverhalten von VerbunddĂĽbelleisten mit Ausstanzversagen | Stahlbau | 6/2017 | 459-469 | Fachthemen |
AbstractBei der Bemessung von Verbundkonstruktionen ist neben der Schubtragfähigkeit das duktile Verformungsverhalten der Verbundmittel von entscheidender Bedeutung. Eurocode 4 lässt für Verbundträger eine Teilverdübelung und eine äquidistante Verbundmittelanordnung lediglich bei Verwendung duktiler Verbundmittel mit einem Verformungsvermögen von mindestens 6 mm zu. Für Verbunddübelleisten sind bisher keine Berechnungsansätze zur Beschreibung des nichtlinearen Verformungsverhaltens vorhanden, so dass grundsätzlich zeit- und kostenintensive Abscherversuche zur Charakterisierung benötigt werden. Im vorliegenden Beitrag werden daher Modelle für die Berechnung des Verformungsvermögens und die Beschreibung der Schubkraft-Schlupfbeziehung von Verbunddübelleisten vorgeschlagen, in die die mechanischen Kenngrößen Schubtragfähigkeit und elastische Dübelsteifigkeit einfließen. Die Modelle werden anhand einer umfassenden Versuchsdatenbank von in der Literatur dokumentierten Schubkraft-Schlupfbeziehungen kalibriert und validiert. Sie ermöglichen das nichtlineare Verformungsverhalten von Verbunddübelleisten mit Puzzle- oder Klothoidenform unabhängig von experimentellen Untersuchungen vorherzusagen und ihre Duktilität zu bewerten. Anhand der Modelle werden die in der allgemeinen bauaufsichtlichen Zulassung für Verbunddübelleisten angegebenen Konstruktionsregeln zur Sicherstellung eines duktilen Verformungsverhaltens systematisch überprüft und angepasst. x |