Artikeldatenbank
Autor(en) | Titel | Zeitschrift | Ausgabe | Seite | Rubrik |
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Erler, Maik | Textile reinforcement in the bed joint of basement masonry / Textile Bewehrung in der Lagerfuge von Kellermauerwerk - First findings from a current research project / Erste Erkenntnisse zum aktuell laufenden Forschungsprojekt | Mauerwerk | 1/2018 | 15-25 | Fachthemen |
KurzfassungThe successful structural verification of basement walls under earth pressure loading with light imposed loading is often difficult. This situation is often encountered for external basement walls under terrace doors, stairs, masonry light wells etc., where the theoretically necessary imposed loading is missing. This makes it impossible to resist the acting bending forces from earth pressure using a vertical arch model. In such cases, the earth pressure has to be resisted in a horizontal direction. Since however the bending moment capacity of unreinforced masonry parallel to the bed joint is low, another possibility is to use a textile-reinforced bed joint with longitudinal fibres of alkali-resistant glass or carbon fibre. With an appropriately adapted textile reinforcement in the bed joints, the masonry can fulfil the requirements for load-bearing capacity against earth pressure with horizontal load transfer, even under a small imposed load. Textile reinforcement has the advantage above all of corrosion resistance compared to conventional steel reinforcement, and textiles can also be inserted into thin bed joints. The Chair of Structural Design in the Faculty of Architecture of the TU Dresden is currently carrying out extensive numerical and experimental studies for this purpose. The objective is to develop an optimal configuration of material and textile form for use as bed joint reinforcement. The investigations are concentrating on the tension strength, bonding and durability of the composite material “textile mortar”. This report should give a brief overview of the state of the work in the currently running research project. x | |||||
Erler, Maik; Jäger, Wolfram | Textile reinforcement in the bed joint of basement masonry and infill walls subjected to high wind loads / Textile Bewehrung in der Lagerfuge von Kellermauerwerk und windbelasteten Ausfachungswänden | Mauerwerk | 1/2019 | 16-31 | Fachthemen |
KurzfassungThe successful structural verification of basement walls under earth pressure loading with light vertical loading is often difficult. This situation is often encountered for external basement walls under terrace doors, stairs, masonry light wells, etc., where the vertical loading that is theoretically necessary is absent. This makes it impossible to resist the acting flexural forces from earth using a vertical arch model alone. In such cases the basement wall must also resist the earth pressure in a horizontal direction. However, due to the fact the bending moment capacity of unreinforced masonry parallel to the bed joint is low you have the option here of using a textile-reinforced bed joint with longitudinal fibres of alkali-resistant glass or carbon fibre. With an appropriately adapted textile reinforcement in the bed joints, the masonry can fulfil the requirements for load-bearing capacity against earth pressure with a horizontal load transfer, even under a small vertical load. The same applies to infill walls subjected to high wind loads the bending moment capacities of which are also slightly parallel to and vertically to the bed joint and cannot be provably demonstrated on large infill surfaces and strong wind loads. The load-bearing can also be increased by improving the flexural strength parallel to the bed joint. The Chair of Structural Design in the Faculty of Architecture of the Technical University (TU) Dresden was carrying out extensive numerical and experimental studies for this purpose. In the journal Mauerwerk 01/2018 [1] first findings from small trial series have already been presented. In the meantime, a series of large-scale tests have additionally been performed to check the promising results of the small-scale tests with respect to their real applicability. This report should provide a combined insight into the work of the concluded research project. x | |||||
Textile Roofs 2004 | Bautechnik | 5/2004 | 394 | Termine | |
Bäckmann, R. | Textile Überdachungen für Kinderspielplätze. | Bautechnik | 6/1983 | 212-215 | |
KurzfassungAnforderungen für Überdachungen von Kinderspielplätzen und insbesondere die Eignung von textilen Werkstoffen für diese Anwendung. x | |||||
Textilien statt Stahl: Neuer Betonwerkstoff | Bautechnik | 11/2012 | 785 | Aus den Hochschulen | |
TGA-Fachverbände: Positive Bewertung der neuen EU-Richtlinie | Bauphysik | 3/2018 | 165 | Aktuell | |
TGV Station Liege-Guillemins | Steel Construction | 1/2010 | 33 | News | |
TGV-Bahnhof in Paris | Beton- und Stahlbetonbau | 2/2002 | 114 | Information | |
Scheuch, G. | TGV-Brücke Ventabren | Bautechnik | 10/1998 | 834-835 | Berichte |
Scheuch, G. | TGV-Brücken Mondragon | Bautechnik | 2/2000 | 144-146 | Berichte |
Galler, Robert | That was the Austrian Tunnel Day 2014! / Das war der Österreichische Tunneltag 2014! | Geomechanics and Tunnelling | 6/2014 | 730-733 | Conference report |
Berenbak, J. | The "British Airways London Eye" the greatest observation wheel in the world (Das "British Airways London Eye" - der Welt größtes Riesenrad) | Stahlbau | 4/2002 | 278-284 | Fachthemen |
KurzfassungSeit Beginn dieses Jahrhunderts gewährt dem Besucher ein Riesenrad von 135 m Höhe weite Blicke über die Themse und die City von London. Die Felge des Riesenrades besteht aus einem Dreigurtfachwerk, an dem 32 Gondeln befestigt sind. Vorgespannte Kabel halten die Felge gegenüber der zentralen Spindel in Position. Die gesamte Konstruktion wird duch einen Zweibock abgestützt und schwebt über dem Queen's Walk. Das Bauwerk repräsentiert eine der spektakulärsten Entwicklungen auf dem Gebiet des Bauens mit Hohlprofilen aus Stahl. Der Totalentwurf und die Lieferung sind in etwa 16 Monaten realisiert worden. x | |||||
Misiek, Thomas; Huck, Gerhard; Käpplein, Saskia | The "combined approach" for the design of shear diaphragms made of trapezoidal profile sheeting | Steel Construction | 1/2018 | 16-23 | Articles |
KurzfassungDedicated to Prof. Dr.-Ing. Helmut Saal on the occasion of his 75th birthday x | |||||
Bijlaard, F.; Feldmann, M.; Naumes, J.; Sedlacek, G. | The "general method" for assessing the out-of-plane stability of structural members and frames and the comparison with alternative rules in EN 1993 Â -Â Eurocode 3 Â -Â Part 1-1 | Steel Construction | 1/2010 | 19-33 | Article |
KurzfassungThe key to harmonizing the rules for the assessment of in-plane and out-of-plane stability of structural steel members is a common definition of equivalent geometric imperfections. The nature of these is given by the elastic-critical buckling mode and their amplitudes are obtained from the evaluation of test results for member resistance according to EN 1990 - Annex D - Basis of structural design. x | |||||
Grossauer, Karl; Modetta, Flavio; Tanner, Urs | The "Standard Tunnel Construction Method" of Rhaetian Railways / Die "Normalbauweise Tunnel" der Rhätischen Bahn | Geomechanics and Tunnelling | 5/2017 | 542-550 | Topics |
KurzfassungThe Rhaetian Railways AG (RhB) operates an approximately 384 km long rail network, predominantly in the Canton of Graubünden (CH). With much of this rail network being situated in Alpine terrain, extensive engineering infrastructure is used; approx. 20 % of the entire rail system consists of such structures. The majority of these engineering structures are the 115 tunnels with a combined length of 58.7 km, constructed between 1901 and 1914. Due to the age of the tunnels, more than half of the 115 tunnels require renovation. The RhB has estimated that approximately 75 of these tunnel structures (with a combined length of approx. 26 km) will require extensive repair within the next 50 years. Thus a new standardized rehabilitation strategy was developed under the name “Standard Tunnel Construction Method” to ensure that the existing rail tunnels satisfy current tunnel design standards [1]. The primary goal of the “Standard Tunnel Construction Method” is to ensure that renovation costs are consistently lower compared to previous renovations by following a standardized workflow process. The primary challenges associated with such renovations are concerned with determining the extent of repair required for the tunnel as well as creating a feasible concept, which allows for the tunnel to be repaired while still remaining operational. Using the “Standard Tunnel Construction Method”, it is possible to optimize the tunnel rehabilitation strategy while maximizing quality and minimizing monetary costs. x | |||||
The 12th European Conference on Earthquake Engineering | Bautechnik | 1/2001 | 71 | Termine | |
Gosowski, Bronislaw; Ziólko, Jerzy | The 12th International Conference on Metal Structures - Wroclaw 2011 | Steel Construction | 4/2011 | 269-271 | Report |
Walraven, Joost C.; Bigaj-van Vliet, Agnieszka | The 2010 fib Model Code for Structural Concrete: a new approach to structural engineering | Structural Concrete | 3/2011 | 139-147 | Articles |
KurzfassungThe fib Model Code is a recommendation for the design of reinforced and prestressed concrete which is intended to be a guiding document for future codes. Model Codes have been published before, in 1978 and 1990. The draft for fib Model Code 2010 was published in May 2010. The most important new element in this Model Code is “Time” in the sense of service life. Additionally, the Model Code contains an extended state-of-theart chapter on the structural materials concrete and steel but regards non-metallic reinforcement and fibres as reinforcement as well. Many loading conditions are considered, ranging from static loading to non-static loading, considering earthquake, fatigue and impact/explosion. Five methods are offered to verify structural safety. Attention is given to verification of limit states associated with durability, robustness and sustainability. Finally, verification assisted by numerical methods and by testing is considered. Other elements that are links in the chain of life cycle design are construction and conservation. In the part on conservation the conservation strategy is treated in combination with conservation management, condition survey and assessment, and evaluation and decision-making. x | |||||
Thuro, Kurosch; Bundschuh, Moritz | The 2010 rockfall event in Stein an der Traun - causes and triggers / Das Felssturzereignis in Stein an der Traun 2010 - Ursachen und Auslöser | Geomechanics and Tunnelling | 4/2012 | 329-338 | Topics |
KurzfassungOn January 25th 2010 at about 8 p.m. a block of 432 m3 volume and 1, 026 t weight was released from a conglomerate face, apparently without warning, destroying a family home in the village of Stein on the river Traun. Only two of the four inhabitants could be saved out of the debris. After this event, the question arose whether the rockfall could have been foreseen or if such spontaneous incidents are abrupt and unpredictable. This paper presents the studies conducted to reconstruct the processes leading to the event. The investigations included field mapping, geodetic survey, laser scanning and stereographic photogrammetry of the rupture face, mineralogical analysis of sinter crust thin sections, inventory of the block dimensions and reconstruction of the collapse kinematics, analysis of the weather data prior to the event and a 2D finite element calculation (Phase2) using the geometry of the overhanging conglomerate strata. x | |||||
Plinninger, Ralf J.; Smettan, Klaus; Kresse, John | The 2010 rockfall event in Stein an der Traun - installation of monitoring and early-warning systems / Das Felssturzereignis von Stein an der Traun - Einrichtung von Monitoring- und Frühwarn-Systemen | Geomechanics and Tunnelling | 4/2012 | 339-346 | Topics |
KurzfassungThe heritage-protected ensemble of Castle Brewery, boarding school and medieval Cave Castle forms the centre of Stein a.d. Traun, Traunstein County, Bavaria/Germany. In large parts of the area, the buildings nestle to or are built directly into a vertical or even overhanging rock slope up to 50 m high, formed of Quaternary conglomerates. Potential rock or block falls as well as larger scale instabilities in this slope represent hazards to the infrastructure below it, as was dramatically shown by the tragic event in January 2010. In order to monitor changes in the rock mass, geotechnical monitoring and early-warning systems were installed in two areas in 2011. This article describes the specific structural and geomechanical situation of the two investigation areas and presents the monitoring concept and the first measured data. x | |||||
The 6th International Colloquium Stability & Ductility of Steel Structures | Stahlbau | 7/1999 | 604 | Termine | |
The 9th International Conference on BRIDGES IN DANUBE BASIN | Stahlbau | 3/2016 | 194 | Aktuell | |
Sempelmann, Franz; Matt, Kajetan; Konrad, Frank | The A26 Linz Motorway - A new landmark for Linz / Die A26 Linzer Autobahn - Ein neues Wahrzeichen für Linz | Geomechanics and Tunnelling | 5/2021 | 459-467 | Topics |
KurzfassungThe A26 not only relieves the central part of the road network in Linz but also allows the river Danube to be crossed by means of a 300 m long bridge, anchored in the rock slopes which form the banks of the Danube.The elements of the 1st phase are the Danube bridge and two underground motorway junctions, Danube North and South, with excavation cross-sections of up to 375 m2 and the tight radii of the motorway on-ramps. In addition to the elevated location of the main portals, the river Danube, the infrastructure facilities and the built-up area take space in the valley cause unfavourable conditions. Besides these conditions, urban planning requirements have an effect on the realization of the construction project. The excavated material from the tunnel is transported off-site by ship. The project conditions such as the high number of portals, the noise-reflecting effect of the “Danube gorge” and the low overburden require substantial measures to limit and monitor the immissions. x | |||||
Giulia, Chemolli | The affirmation of vaults in concrete and reinforced concrete for bridges and floors in the Austro-Hungarian Empire. The Gewölbe-Ausschuss's tests 1890-1892 | Beton- und Stahlbetonbau | 12/2017 | 824-833 | Berichte |
KurzfassungIn the second half of the 19th Century, in the Austro-Hungarian Empire, concrete, reinforced or not, had difficulties affirming itself against traditional techniques. The scarcity of information and the lack of a complete theory were an obstacle, especially in the case of vaults. In response to this situation, in 1890, inside the Österreichischer Ingenieur- und Architekten-Verein, a Committee, the Gewölbe-Ausschuss, was formed to organize systematic series of loading tests on arches of various dimensions and different materials for bridges and on little vaults for floors: among them, the MONIER system and concrete gave excellent results. x | |||||
Menegotto, Marco | The aim of fib publishing | Structural Concrete | 2/2011 | 63-64 | Editorial |