Safety assessment of existing retaining structures (English)

Sicherheitsbewertung bestehender Stützbauwerke

In: Geomechanics and Tunnelling   ;  10 ,  5  ;  524-532  ;  2017

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Over the last years, an increase of damages and defects of geotechnical structures has been observed during detailed safety assessments. This is mostly related to the rising age of these structures and the related decrease of the bearing capacity. The handling and dealing with these existing structures will be a challenging task for future civil engineers. This article should give an insight into damages and defects of retaining structures, which are quite difficult to detect and evaluate in terms of safety and risk. The first part of the article gives a short overview on the state of the art when it comes to the safety assessment of existing retaining structures and introduces a new, currently being edited, ÖGG guideline for this field of civil engineering. The second part deals with corrosion‐induced damages on cantilever walls and shows first results of the research project SIBS (safety assessment of existing retaining structures).

Durch das steigende Bauwerksalter sowie der damit verbundenen Abnahme der Tragfähigkeit und Zuverlässigkeit vieler geotechnischer Bauwerke wurden im Rahmen vertiefter Überprüfungen in den letzten Jahren vermehrt Schäden an solchen Bauwerken festgestellt. Der Umgang mit der vorhandenen Bausubstanz stellt eine anspruchsvolle und zukünftig verstärkte Aufgabe für Ingenieure dar. In diesem Fachaufsatz soll ein kurzer Überblick zu einigen Schadensbildern an Stützbauwerken gegeben werden, die sich sowohl in der Erfassung als auch in der Bewertung als schwierig herausstellen. Dies wird anhand eines Beispiels schematisch erläutert, das auf Erkenntnissen aus der Praxis beruht und erste Forschungsergebnisse des Forschungsprojekts SIBS (Sicherheitsbewertung bestehender Stützbauwerke) widerspiegeln soll. Abschließend wird ein Einblick in eine neue ÖGG Empfehlung gegeben, die sich der Untersuchung und Bewertung bestehender, unverankerter Stützbauwerke widmet und auf Basis des bisherigen Wissensstands der Bauwerkserhalter und praxisnaher Ingenieure erstellt wurde.

Table of contents – Volume 10, Issue 5

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The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. The display of the Tables of Contents may therefore be incomplete.

428
66. Geomechanics Colloquium
Schubert, Wulf | 2017
430
News: Geomechanics and Tunnelling 5/2017
| 2017
447
Koralm Tunnel contract KAT3 – System behaviour in a geotechnically challenging environment
Moritz, Bernd / Pilgerstorfer, Thomas / Pointner, Peter | 2017
458
Semmering Base Tunnel – Excavation of the emergency station in complex ground conditions
Poisel, Alexander / Weigl, Johannes / Schachinger, Tobias / Vanek, Robert / Nipitsch, Gernot | 2017
467
Learning and optimization from the exploratory tunnel – Brenner Base Tunnel
Bergmeister, Konrad / Reinhold, Chris | 2017
477
DB major project Stuttgart‐Ulm, Albaufstieg‐Steinbühl Tunnel – Tunnel excavation and lining in karst
Joham, Kurt / Voringer, Jürgen | 2017
489
Compensation grouting – Balance between asset protection and collateral damage through the example of Crossrail C510
Stärk, Alfred / Pujol, Roser Soler / Hill, Nigel / Kettle, Clif T. | 2017
497
Refurbishment of masonry tunnels through the example of the Kirchberg Tunnel for the DB Netz AG
Meyer, Patrick / Wiesmeier, Ludwig / Jäntschke, Martin | 2017
507
Challenges with regard to road tunnel structures – Assement management by Asfinag
Honeger, Christian / Engelbogen, Siegfried / Pucher, Michael | 2017
516
Maintenance of rail tunnels – Strategy with vision
Heissenberger, Roman / Holcik, Alfred | 2017
524
Safety assessment of existing retaining structures
Rebhan, Matthias J. / Vorwagner, Alois / Kwapisz, Maciej / Marte, Roman / Tschuchnigg, Franz / Burtscher, Stefan L. | 2017
533
An innovative method of upgrading old rail tunnels under continued operation – Example Rekawinkler‐ and Kleiner Dürreberg Tunnel
Seywald, Christian / Helmberger, Albert / Matt, Robert | 2017
542
The ”Standard Tunnel Construction Method“ of Rhaetian Railways
Grossauer, Karl / Modetta, Flavio / Tanner, Urs | 2017
552
Integration of reflection seismic data into the documentation during the construction of the Brenner Base Tunnel
Schwarz, Christian / Schierl, Heimo | 2017
561
Digital rock mass characterization 2017 – Where are we now? What comes next?
Gaich, Andreas / Pötsch, Markus / Schubert, Wulf | 2017
567
Geological documentation – Conditions, status quo and future development
Weichenberger, Franz Peter / Pischinger, Gerald | 2017
574
Semmering Base Tunnel – Ground characterisation for tendering and construction
Wagner, Oliver Kai / Fasching, Alfred / Stadlmann, Thomas / Vanek, Robert | 2017
584
Good documentation is always objective
Scholz, Marcus / Spaun, Georg | 2017
591
Headrace system of HPP Obervermuntwerk II – Geotechnical design and experience
Dich, Christopher / Barwart, Christian | 2017
602
Strain measurements at the transition from a rock supported to an unsupported steel lined pressure tunnel at the Kaunertal hydropower station
Bonapace, Paul / Hammer, Andreas | 2017
611
Pumped storage technology combined with thermal energy storage – Power station and pressure tunnel concept
Pikl, Franz Georg / Richter, Wolfgang / Zenz, Gerald | 2017
620
Upgrading of a Norwegian pressurized sand trap combined with an open air surge tank
Richter, Wolfgang / Vereide, Kaspar / Zenz, Gerald | 2017
625
Product Information: Geomechanics and Tunnelling 5/2017
| 2017
629
Diary of Events: Geomechanics and Tunnelling 5/2017
| 2017
631
Imprint: Geomechanics and Tunneling 5/2017
| 2017
632
Preview: Geomechanics and Tunneling 6/2017
| 2017
Content: Geomechanics and Tunnelling 5/2017
| 2017
Cover Picture: Geomechanics and Tunnelling 5/2017
| 2017