Artikeldatenbank
Autor(en) | Titel | Zeitschrift | Ausgabe | Seite | Rubrik |
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Klais, Frank; Wolf, Petra; Lienhart, Werner | The Grautschenhof contract - Construction of an intermediate access under complex local conditions / Das Baulos Grautschenhof - Errichtung eines Zwischenangriffs unter komplexen Randbedingungen | Geomechanics and Tunnelling | 6/2017 | 686-693 | Topics |
KurzfassungWith the start of construction on the third tunnelling contract, work has now started on all sections of the Semmering Base Tunnel. The Tunnel Grautschenhof contract is a challenging construction project with numerous unusual problems. Complex ground conditions make extensive grouting necessary. Numerous constraints above-ground, like high-pressure gas pipelines require monitoring and protection measures. Since the start in May 2016, two shafts, the first of three caverns and the first metres of the running tunnels have already been driven. In parallel to this, the works above ground to create two site facilities areas are now largely complete. x | |||||
Zenz, Gerald; Obernhuber, Pius; Czerny, Helmut | The great significance of dam safety in Austria / Der hohe Stellenwert der Talsperrensicherheit in Österreich | Geomechanics and Tunnelling | 5/2012 | 631-637 | Topics |
KurzfassungEach dam and each reservoir is an individual facility, since their foundation conditions are rarely similar. Due to their location, their height and their storage capacity, dams and reservoirs can hold a considerable hazard potential, which is why they are designed conservatively; projects are examined meticulously (e.g. by the Austrian Commission on Dams) and monitored comprehensively during the construction phase and during operation. To guarantee their continuous safety, dams and reservoirs are monitored with great care by the operating company with the help of trained staff and the latest measuring equipment. The most important measurement data are acquired continuously so as to gain an up-to-date impression of the load-bearing behaviour of the dam and its foundation and to be able to react swiftly and efficiently should any changes occur. x | |||||
Plieninger, Sven; Gebreiter, Daniel; Mühlberger, Jörg; Justiz, Stefan | The grid-shell of Jinji Lake Mall - Rise like a Phoenix | Steel Construction | 4/2014 | 258-261 | Reports |
KurzfassungJinji Lake Mall, a 290,000 m² shopping and entertainment centre, will be centrepiece to a development of several super-high-rise buildings by the waterfront of Jinji Lake in Suzhou, China. Visible from the surrounding skyscrapers, the appearance of the “fifth façade” became of paramount importance. In response, the architectural design foresaw a continuous, 35,000 m² free-form glass roof to cover the four individual buildings of the mall ensemble. x | |||||
Zenz, Gerald | The headrace - main artery of hydropower stations / Der Triebwasserweg - Hauptschlagader der Speicherkraftwerke | Geomechanics and Tunnelling | 2/2011 | 78 | Editorial |
The History of the Theory of Structures | UnternehmerBrief Bauwirtschaft | 12/2018 | 20 | Buchtipps | |
Strauss, A. | The History of the Theory of Structures (Kurrer, K.-E.) | Beton- und Stahlbetonbau | 1/2009 | 74 | Bücher |
Krätzig, W. B. | The History of the Theory of Structures, from Arch Analysis to Computational Mechanics (Kurrer, K.-E.) | Bautechnik | 9/2008 | 656-657 | Bücher |
The History of the Theory of Structures. From Arch Analysis to Computational Mechanics (Kurrer, K.-E.) | Mauerwerk | 3/2009 | 163-164 | Fachliteratur | |
Kurrer, Karl-Eugen | The History of Theoretical, Material and Computational Mechanics - Mathematics meets Mechanics and Engineering. From E. Stein (ed.) | Steel Construction | 2/2014 | 132 | Book review |
Sobek, W.; Trumpf, H.; Stork, L.; Weidler, N. | The Hollaenderbruecke - Economic and architecturally sophisticated design employing steel and GFRP | Steel Construction - Design and Research | 1/2008 | 34-41 | Articles |
Roberts, J. | The impact of the code for sustainable homes on masonry house construction in England | Mauerwerk | 4/2010 | 232-238 | Berichte |
KurzfassungIn England masonry remains the predominant form of house construction and accounts for over 80 % of all new dwellings. The rate of replacement of the housing stock in the UK remains low and each dwelling is required to have a viable working life in excess of 100 years. This requires forms of construction that are durable, with low maintenance costs and that are sufficiently flexible to cope with extension, alteration and changes in performance requirements. x | |||||
Weidner, Stefanie; Kelleter, Christian; Haase, Walter; Sternberg, Paula; Geiger, Florian; Bischoff, Manfred; Burghardt, Timon; Honold, Clemens; Binz, Hansgeorg; Wagner, Julia; Böhm, Michael; Sawodny, Oliver | The implementation of adaptive elements into an experimental high-rise building | Steel Construction | 2/2018 | 109-117 | Articles |
KurzfassungDedicated to our speaker, Prof. Werner Sobek, in honour of his 65th birthday x | |||||
The IMS Student Project Awards 2015 / Awards der IMS für Studienprojekte 2015 | Mauerwerk | 3/2015 | 242 | Wettbewerbe | |
Sagaseta, Juan | The influence of aggregate fracture on the shear strength of reinforced concrete beams: an experimental and analytical research project | Structural Concrete | 4/2013 | 401-414 | Technical Papers |
KurzfassungHigh-performance concretes such as high-strength concrete (HSC) or lightweight aggregate concrete (LWAC) are generally used to reduce member sizes and self-weight, and to optimize the construction of reinforced concrete structures. The bond between the aggregate particles and the cement paste can be strong enough in HSC and LWAC to cause the aggregate to fracture at cracks, which in turn reduces the shear stress that can be transferred across cracks by means of aggregate interlock. Relatively smooth cracks can also develop in self-compacting concrete due to the low coarse aggregate content. The contribution of aggregate interlock to the shear strength of RC beams is uncertain and depends on parameters such as the amount of shear reinforcement or the contribution of arching action for loads applied close to the support. Existing tests on slender RC beams without shear reinforcement have shown that shear strength is reduced by aggregate fracture. However, there is a lack of similar test data for members with stirrups and for members with varying shear span/effective depth ratios. This paper reviews the findings and contributions in this area from the experimental and analytical research of the author's PhD thesis, which was awarded the fib Achievement Award for Young Engineers in 2011. x | |||||
Walton, Gabriel; Diederichs, Mark; Punkkinen, Allan | The influence of constitutive model selection on predicted stresses and yield in deep mine pillars - A case study at the Creighton mine, Sudbury, Canada | Geomechanics and Tunnelling | 5/2015 | 441-449 | Topics |
KurzfassungBased on recent advances in modelling the post-yield behaviour of brittle rock, the authors have developed a calibrated inelastic model of the 7,910 level (2.4 km depth) at the Creighton Mine in Sudbury, Ontario, Canada using data collected from the monitoring of pillar dilatancy. While this calibrated model represents a state-of-the-art continuum approach for capturing the progressive development of yield and stresses in mine pillars, alternative state-of-practice approaches (elastic and perfectly plastic material models, for example) represent potentially acceptable options for practical application. x | |||||
Bezuijen, A. | The influence of grout and bentonite slurry on the process of TBM tunnelling / Der Einfluss von Ringspaltmörtel und Bentonitsuspension auf den TBM-Vortrieb | Geomechanics and Tunnelling | 3/2009 | 294-303 | Topics |
KurzfassungThe bentonite and grout flow around a TBM is elaborated, as well as grout flow along the lining. The calculated grout flow along the lining is compared with the results of measurements. Measurement data for the flow around the TBM are not available. Both the bentonite and the grout are modelled as a Bingham liquid and it will be shown that, due to the relatively low flow velocities, the yield stress is the governing parameter. The results of the calculations show that both the flow around the TBM and the flow around the lining may significantly influence loading on the TBM, the soil, and the lining. The bentonite and grout flow around the TBM may result in a lower volume loss than calculated when assuming that the soil follows the tapered TBM. The grout flow and especially grout consolidation lead to lower pressures around the lining if the tunnel is constructed in sandy soil. x | |||||
Heinemeyer, Christoph; Feldmann, Markus | The influence of rivet corrosion on the durability of riveted connections | Steel Construction | 3/2011 | 188-192 | Articles |
KurzfassungFrom the beginning of structural steel construction until the 1950s, steel bridges were riveted structures. Rivets have not only been used for joining members as bolts are today used for but also for forming cross sections by joining the section elements e.g. web and flanges. x | |||||
Gehring, K. | The influence of TBM design and machine features on performance and tool wear in rock / Der Einfluss von TBM-Konstruktion und Maschineneigenschaften auf Leistung und Werkzeugverbrauch in Gestein | Geomechanics and Tunnelling | 2/2009 | 140-155 | Topics |
KurzfassungPerformance and tool consumption are decisive factors in the economical application of TBMs. Therefore the most accurate possible prediction of penetration and cutter life, the commonly used measures, is of great importance. The potential accuracy is certainly restricted by the boundary conditions of application underground in rock. Apart from the characteristics of the prevailing rock, prediction models must also take into account parameters representing the design and layout of the TBM used (for example, parameters referring to dimensions and installed forces).It is the aim of this paper to provide a survey not only of all those features and parameters of TBMs, whose influence on penetration and cutter life has been already recognized and investigated, but also of those whose evaluation is still pending (e.g. the stiffness of the cutter head). Only those parameters are addressed which are assumed to be influential. x | |||||
Eberl, S.; Restner, U.; Galler, R.; Mali, H. | The Influence of the Parameter "Temperature" on the Abrasiveness of Rock | Geomechanik und Tunnelbau | 1/2008 | 77-83 | Fachthemen |
KurzfassungThe article deals with the influence of temperature produced in the cutting process on rock abrasiveness and tool wear. Basically it was to clarify which effects take place when quartz or rock with significant quartz content is heated up to a certain temperature. Does the quartz jump from low into high quartz happening at 573 °C cause an increase in abrasiveness of mineral and rock or not? To find out, a certain number of Cerchar abrasiveness index tests were done for a detailed investigation of this topic. Additionally, to get a better understanding what really happens inside rock structure additionally other rock parameters like unconfined compressive strength, Brazilian tensile strength, ultrasonic wave velocity and density were determined on untreated and heated and subsequently cooled down rock samples. The final output of the research work showed that rocks show a very specific and significant reaction to thermal stresses induced into their structure resulting in a different behaviour regarding abrasiveness and fracturing. x | |||||
Moga, I.; Moga, L. | The Influence of the thermal insultion of the window frameworks on the energetic performance of the window | Bauphysik | 6/2008 | 420-425 | Fachthemen |
KurzfassungThe paper presents the energetic performances of a window in diverse constructive realization solutions and the thermal protection of its frame. The study made has at its basis the numeric analysis of the temperature field upon the effect made by the joining of the thermal insulation from the walls on the embrasures of the window hole. The heat transfer through the window- wall- insulation ensemble was determined with the help of the "WINDOW- WALL" calculus program derived from the calculus program CIMPSPAT, made by the authors in the variant 2008 (first variant in 1980) written in the programming language Delphi under Windows environment. The analysis of the interior microclimate conditions existing in the dwelling houses from our country, leads to the necessity of a better knowing of the heat transfer phenomena closer to the real phenomenon that takes place in the case of the windows placed in different situations of exploitation. The practical finding of different behavior of windows, the condense phenomenon met on the interior surface of the window framework and the contour in which the window is placed, calls for the necessity of the calculus presented in the paper. x | |||||
Göbl, A. | The interaction of ground, TBM and segment lining with closed shield machines / Interaktion Untergrund, Tunnelvortriebsmaschine und Tübbingausbau bei geschlossenen Schildmaschinen | Geomechanics and Tunnelling | 5/2010 | 491-500 | Topics |
KurzfassungThe article explains the interaction of the overall system of ground, TBM and segment lining based on recent experience of projects using TBMs with active face support in Austria and abroad. The alternating dependencies and their consequences for tunnel construction are discussed in more detail. Of particular interest is the influence of the support medium and how it functions at the face and the tunnel side walls. The interaction of support pressure, thrust force and the centre of gravity of the TBM and its effect on steering behaviour are also considered. The effects of the compression of the segment tube by the TBM (prestress) are considered in relation to the improvement of the bedding and the problem of floating. x | |||||
Poisel, R.; Tentschert, E.; Preh, A.; Ostermann, V.; Chwatal, W.; Zettler, A. | The interaction of machine and rock mass analysed using TBM data and rock mass parameters / Interaktion Maschine-Gebirge analysiert mittels TBM-Daten und Gebirgskennwerten | Geomechanics and Tunnelling | 5/2010 | 510-519 | Topics |
KurzfassungStatistical investigations of TBM data and rock parameters have shown that interactions determined theoretically or in the laboratory are often not realistic because the interaction of the machine with the rock mass is considerably influenced by the type of machine in use, the machine driver and the characteristics of the rock mass. Evaluations of excavation data have shown that the maximum net advance rate is not produced by the maximum thrust force, even in the same rock type. Individualised optimisation of the interaction on the basis of continuously recorded machine data and basic information about the rock mass (type of rock, degree of jointing), which can be determined by geological and geophysical investigations during tunnelling, is therefore of particular significance for economical tunnelling. The evaluation of these data should not replace but rather supplement the control of the machine by the driver. x | |||||
Adelsberger, H.; Eicher, H. | The Koralm-Line as a Part of Wider European Railway Connections - Integrated in the Baltic-Adriatic-Axis | Geomechanik und Tunnelbau | 4/2008 | 250-255 | Topics |
KurzfassungSince antiquity, the land connection between Baltic and Adriatic Seas has been used for trading and cultural exchange. In medieval times, this “amber route”, passing east of the Alps, was shifted to a line following intra-Alpine valleys orientated southwest - north-east, the so called “Diagonal Passage”. The historical “Südbahn”, however, lead partly through the Alps, crossing Semmering, but then continuing to Trieste further south-east, via Graz and Laibach, today Ljubljana. Cut through after the big wars of the 20th century, the railway connection Vienna-Italy follows now the “Diagonal Passage” at all its length, leaving Graz offside, in a basin separated by mountain ranges to the north and west and open to the east and south. x | |||||
Hölzl, Harald; Pilgerstorfer, Thomas; Uschan, Robert; Wagner, Hanns; Moritz, Bernd | The Koralmtunnel underground emergency stop - Geotechnical design and construction / Die Nothaltestelle des Koralmtunnels - Geotechnische Planung und Bauausführung | Geomechanics and Tunnelling | 6/2017 | 711-721 | Topics |
KurzfassungThe Koralm Tunnel, a twin-tube single-track railway tunnel with an overall length of almost 33 km and a maximum overburden of about 1, 200 m, closes the most significant gap of the future high-capacity railway line from Graz to Klagenfurt, Austria. Located close to the tunnel centre, an emergency stop will provide the facilities for future travellers to be evacuated in case of an emergency. The paper discusses the challenges of the design and incorporates the current state of the ongoing construction works of the emergency stop. In addition, the structure and content of the geotechnical safety management plan, as well as the applied monitoring program are presented in detail, emphasizing the analysis of the observed system behaviour in connection with the encountered geological conditions. x | |||||
Zwittnig, Gerald | The Lavanttal area: Construction phase node point in the key area of the Koralmbahn / Der Raum Lavanttal: Knotenpunkt in der Bauphase im Kernbereich der Koralmbahn | Geomechanics and Tunnelling | 6/2015 | 518-526 | Topics |
KurzfassungThe new Koralm railway line between Graz and Klagenfurt will connect the Lavanttal region in Lower Carinthia to the European railway network. This area is already a sensitive junction point, where activities for the adjacent tunnel building contracts and the future InterCity station overlap concerning construction time and available space. Activities will intensify in the technical equipment installation phase and demand well coordinated preliminary planning. Extensive framework conditions and requirements were already taken into account in the planning of the railway line to the new station, which is to fulfil development and intermodal connection functions resulting in a purposeful and modern configuration, also taking maintenance and tunnel rescue into account. The construction, equipment and activation phases in the Lavanttal region are being coordinated with detailed planning of procedures and logistics, with regular updates and refinements. x |