Artikeldatenbank
Autor(en) | Titel | Zeitschrift | Ausgabe | Seite | Rubrik |
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Proske, Dirk | Überführbarkeit der Eingangsgrößen von Lebenszykluskostenanalysen bei Massivbrücken | Beton- und Stahlbetonbau | 3/2022 | 167-175 | Aufsätze |
KurzfassungLebenszykluskostenanalysen sind ein Verfahren zur Priorisierung von Bauwerken und Maßnahmen im Rahmen des Erhaltungsmanagements von Infrastruktursystemen. Lebenszykluskostenanalysen berücksichtigen eine Vielzahl verschiedener Eingangsgrößen, die wiederum selbst auf unterschiedlichen Parametern basieren, denn oft liegen bei Infrastruktur- und Immobilienbetreibern nicht alle Eingangsgrößen in einer einheitlichen Form vor. Dieser Beitrag befasst sich mit der Überführbarkeit der verschiedenen Eingangsgrößen bzw. Parameter, um eine homogene Lebenszykluskostenanalyse durchführen zu können. Dazu erfolgten eine Literatursichtung und eine subjektive Abschätzung von Kreuz-Korrelationen. x | |||||
Spyridis, Panagiotis; Hufelschulte, Franziska; Mellios, Nikolaos | Einfluss der Stahlfaserbewehrungsarten auf den Betonversagenswiderstand von Befestigungen | Beton- und Stahlbetonbau | 3/2022 | 176-185 | Aufsätze |
KurzfassungEine häufige Bemessungssituation für verschiedene Bauwerke (z. B. Bodenplatten, Industrieböden und Tunnel) sind Verbindungen von tragenden und nichttragenden Elementen auf einem stahlfaserverstärkten Betonuntergrund. Folglich wurde in letzter Zeit ein starkes Forschungsinteresse auf diese konstruktive Lösung gelenkt. Während sich verschiedene Untersuchungen auf normalen und faserbewehrten Beton mit unterschiedlichen Dübeltypen und Fasereigenschaften konzentriert haben, fehlt derzeit ein Einblick in den Einfluss von Stahlfasern mit unterschiedlichen Eigenschaften unter ansonsten vergleichbaren Bedingungen. Diese Forschungsarbeit bietet einheitliche Erkenntnisse zum Einfluss des Fasertyps auf die Betonausbruchskapazität von Befestigungen und ermöglicht eine erneute Überprüfung der derzeit empfohlenen Bemessungsansätze. x | |||||
Matz, Henrik; Empelmann, Martin | Historische Entwicklung der Konstruktionsregeln von Stahlbetonstützen - Hintergründe zu den derzeit geltenden Konstruktionsregeln | Beton- und Stahlbetonbau | 3/2022 | 186-195 | Aufsätze |
KurzfassungDie Stahlbetonstütze ist seit Beginn des 20. Jahrhunderts ein unverzichtbares Bauteil zum Abtrag vertikaler Lasten. Im Laufe der bisher 117-jährigen Normung im Stahlbetonbau haben sich unter Berücksichtigung immer neuer Erkenntnisse in Forschung und Praxis die heute bekannten Konstruktionsregeln entwickelt. Ein Rückblick auf die historische Entwicklung der konstruktiven Durchbildung von Stützen und die Hintergründe der jeweiligen Regeln ist heute aus zwei Gründen sinnvoll. Die Kenntnis über die konstruktive Durchbildung maßgebender Bauteile ist für das Bauen im Bestand aufgrund häufig fehlender Pläne und Angaben von großer Bedeutung. Außerdem vermitteln die Hintergründe zu den Konstruktionsregeln ein Verständnis für die Wirkungsweise der konstruktiven Stützenbewehrung und somit für das Tragverhalten von Stahlbetonstützen. x | |||||
Mit Strom zu recyceltem Beton | Beton- und Stahlbetonbau | 3/2022 | 195 | Nachrichten | |
Jentzsch, Klaus-Jürgen; Jentzsch, Stefan; Merz, Steffen | Hyparschale Magdeburg im Wandel | Beton- und Stahlbetonbau | 3/2022 | 196-205 | Berichte |
KurzfassungMüthers Hyparschale in Magdeburg hat auch nach über 50 Jahren eine Zukunft. Ihrer Errichtung im Jahr 1969 folgten zunächst Jahrzehnte vielfältiger Nutzung als Sport- und Veranstaltungsstätte. Danach geriet sie in Vergessenheit und 1997 erfolgte aus Sicherheitsgründen die bauaufsichtliche Sperrung. Durch unterlassene Instandhaltung und Vandalismus war sie nun dem Verfall preisgegeben. Erst Anfang der 2000er Jahre entdeckte man die baugeschichtliche Bedeutung dieses Solitärs neu und brachte den Willen zur Rettung auf. Den Weg bis zur Instandsetzung der Hyparschale und welche Innovationen des Ingenieurbaus dabei tragend waren, beschreibt der Beitrag. x | |||||
A 14: Beginn der bauvorbereitenden Arbeiten für neue Muldebrücke Grimma | Beton- und Stahlbetonbau | 3/2022 | 205 | Nachrichten | |
Hering, Elke; Lorenz, Enrico; Meichsner, Erik; Schwedes, Rainer; Herrmann, Thomas; Bösche, Thomas | Das Heiligenborner Viadukt - 170-jähriges Eisenbahnviadukt - fit gemacht für den nächsten Nutzungsabschnitt | Beton- und Stahlbetonbau | 3/2022 | 206-216 | Berichte |
KurzfassungHistorische Eisenbahnviadukte sind stadt- bzw. landschaftsprägende Bauwerke. Aufgrund ihres Charakters als bedeutende Bestandteile der gebauten Umwelt, aber auch als wichtige wirtschaftliche Werte, ist der respektvolle Umgang bei Entscheidungen zur Instandsetzung und Weiternutzung dieser Zeugnisse zurückliegender Ingenieurbaukunst unabdingbar. Oft gehen derartige Umbaumaßnahmen mit einer umfassenden Erweiterung der Funktion des Bauwerks einher. Neben einer einfachen Verbreiterung des Fahrwegs können auch zusätzliche technische Einrichtungen, zum Beispiel Oberleitungsanlagen, zu erheblichen Eingriffen in das Erscheinungsbild des Bauwerks führen. Bauen im historischen Bestand stellt sowohl an die Planung als auch an die Bauausführung besondere Anforderungen. x | |||||
Beton- und Stahlbetonbau aktuell 3/2022 | Beton- und Stahlbetonbau | 3/2022 | 217-220 | Beton- und Stahlbetonbau aktuell | |
KurzfassungPersönliches: x | |||||
Kongresse - Symposien - Seminare - Messen | Beton- und Stahlbetonbau | 3/2022 | 220 | Veranstaltungskalender | |
Digitisation in Tunnelling - Research | Geomechanics and Tunnelling | 3/2022 | Cover Pictures | ||
KurzfassungThe A26 Linz Motorway is one of the most important projects to improve traffic situation in Linz as well as in the surrounding area of the Upper Austrian state capital. The first section has been under construction since the beginning of 2019 and consists of an approximately 300 m long suspension bridge over the Danube, which will be anchored in the rocky slopes above the Danube, as well as the two underground motorway interchanges Danube North and South with a total tunnel system of approximately 3200 m in length with driving or main tubes and ramps. (Source: DSI Underground) x | |||||
Content: Geomechanics and Tunnelling 3/2022 | Geomechanics and Tunnelling | 3/2022 | Contents | ||
Galler, Robert | Digitisation in Tunnelling - Research / Digitalisierung im Tunnelbau - Forschung | Geomechanics and Tunnelling | 3/2022 | 246 | Editorials |
News: Geomechanics and Tunnelling 3/2022 | Geomechanics and Tunnelling | 3/2022 | 247-256 | News | |
KurzfassungTunnelling for U5 extension in Frankfurt completed - Bergmännischer Vortrieb für U5 in Frankfurt beendet x | |||||
Huymajer, Marco; Operta, Dzan; Mazak-Huemer, Alexandra; Huemer, Christian | The Tunneling Information Management System - A tool for documenting the tunneling process in NATM projects | Geomechanics and Tunnelling | 3/2022 | 259-264 | Topics |
KurzfassungThe documentation of the tunneling process is a crucial task of every tunnel construction project. It provides evidence of the work performed and thus, serves as a basis for invoicing and for several further analyses. Therefore, continuous digitalisation of this documentation is essential. For this purpose, we provide a digital Tunneling Information Management System (TIMS), which is a prototypically implemented software tool for replacing the still common paper-based documentation process of tunneling projects using the New Austrian Tunneling Method (NATM). The data model presented here defines the data structures managed by this tool. Based on this, the software architecture and the implementation of TIMS is shown. x | |||||
Paskaleva, Galina; Niedermoser, Christoph; Vierhauser, Michael; Mazak-Huemer, Alexandra; Hruschka, Sabine; Huemer, Christian | Data Drops for Tunnel Information Modelling | Geomechanics and Tunnelling | 3/2022 | 267-271 | Topics |
KurzfassungIn the Architecture, Engineering and Construction (AEC) industry, as well as in the tunnelling domain, inter-company processes between partners in different roles in large-scale construction projects still exhibit great potential towards digitalisation. Thereby, information should be seamlessly shared between partners according to the Building Information Modelling (BIM) paradigm. Today, different types of artefacts (e.g., models, plans, documents, etc.) are shared at different points in time, which differ in terms of requirements, information content, as well as data formats. In this article, we extend and prototypically implement the concept of Data Drops to provide those artefacts in a digitalised form via a shared Data Drop management platform. For this purpose, we have developed a formal, well-defined indexed data structure on a metadata level. This not only facilitates traceability, but also enables searching for specific meta-information and provides a common view on Data Drops. In addition, a networked view between different drops can be provided. The approach is being evaluated on the use case of a real tunnel construction project. x | |||||
Wenighofer, Robert; Eder, Nina; Speckmoser, Valentin; Villeneuve, Marlene; Winkler, Leopold; Galler, Robert | Adaptive and parameterised 3D BIM model for the tunnel tender and excavation phase | Geomechanics and Tunnelling | 3/2022 | 272-278 | Topics |
KurzfassungBuilding information modelling (BIM) is a frequently discussed topic in tunnelling since it promises less loss of information and reduced lifetime cost of underground infrastructure. There is still some way to go as standardisation in this sector is immature, the implementation of three-dimensional (3D) BIM models is developed for pilot cases of tunnelling only, and data transfer between software tools is a challenge. The long linear structures of tunnels make a specific approach of parameterised and adaptive modelling necessary to meet the requirements of repetitive construction elements and the natural differences of forecast and actual excavation conditions. This approach renders the matching of construction elements in the model and service items feasible for determining quantities for the tender and billing in tunnel projects. In this article, we show that only 57 % of service items can actually be linked to a physical item in traditional two-dimensional (2D) design and highlight the need to consider how to incorporate these items into a BIM model. We also use a case study to propose an approach for parameterised and adaptive modelling of repetitive construction elements and show a way of a continuous data transfer from the forecast tunnelling class distribution via 3D BIM modelling to a billing software without data loss. x | |||||
Winkler, Leopold; Melnyk, Oleksandr; Goger, Gerald | Prerequisites for BIM-based invoicing in NATM projects | Geomechanics and Tunnelling | 3/2022 | 279-283 | Topics |
KurzfassungThe successful management of big tunnelling projects requires the complete documentation of technical and financial data as well as their ongoing evaluation. The current study reviews the possibilities for digital documentation of tunnel construction with the subsequent integration of this data with an invoicing software. It suggests an implementation model, a building information modeling (BIM) project element list and a digital on-site data recording tool for a workflow in New Austrian Tunnelling Method (NATM) projects. This digital resource enables central data management that improves and speeds up automated invoicing processes. x | |||||
Exenberger, Hans; Massimo-Kaiser, Ines Maria; Flora, Matthias | Current developments of digital ground modelling in tunnelling | Geomechanics and Tunnelling | 3/2022 | 284-289 | Topics |
KurzfassungThis article analyses and discusses the current state of the art in the development of digital ground models in tunnelling. Following a review and discussion of the literature research combined with interview responses, a deficit analysis was performed. It shows why current projects mainly work with models and software that function as isolated solutions. A lack of software developments and limited collaborative work mean that the effects of current findings cannot immediately be implemented in models. Accordingly, the enormous potential of full coaction can only be imagined. A further problem is the lack of loss-free data exchange across varying project phases and participants. Science is already moving in the right direction with the goal of harmonising the basic systematics. Finally, requirements for a digital ground model are formulated, and in combination with collaborative working and improved communication, these result in a large number of advanced possible applications. x | |||||
Paar, Gerhard; Mett, Michael; Ortner, Thomas; Kup, Daniel; Kontrus, Heiner | High-resolution real-time multipurpose tunnel surface 3D rendering | Geomechanics and Tunnelling | 3/2022 | 290-297 | Topics |
KurzfassungTunnel surveys making use of photogrammetric three-dimensional (3D) tunnel reconstruction reach resolutions in the millimeter range. Classical big data visualization approaches display point clouds only, neglecting this considerable resolution difference between structure and texture. The article suggests a data structure that separates structural and textural resolution by a regular grid on the unwrapped design surface for 3D, combined with a UV mapping technique as regularly used in computer graphics. For real-time rendering of huge multiscale data sets, the result of photogrammetric commercial-off-the-shelf reconstructions is transformed into a proprietary hierarchical data structure. It facilitates to only load currently relevant parts of the tunnel surface from the hard drive, and only upload and render currently adequate levels-of-detail onto the graphics card for seamless exploration of high-resolution geometric and image 3D tunnel data of arbitrary length. The solution allows for smooth interactive analysis and annotation such as crack identification and mapping, inventory, deformation assessment, and dimensional measurements. Aspects of data generation are addressed and information is given about the data structure, showing examples from entire tunnel 3D representations to demonstrate the smooth behaviour of the real-time rendering of huge data volumes in various scales on standard graphics hardware. x | |||||
Rabensteiner, Stefan; Weichenberger, Franz Peter; Chmelina, Klaus | Automation and digitalisation of the geological documentation in tunnelling | Geomechanics and Tunnelling | 3/2022 | 298-304 | Topics |
KurzfassungIn tunnelling, the geological documentation comprises the daily recording and processing of various data for continuously assessing the geological-geotechnical conditions on-site. One of the core tasks is the documentation of the tunnel face area. With Geodata's Tunnel Mapper, a new measuring system is presented enabling a highly automated data acquisition and the processing of a geo-referenced three-dimensional (3D) tunnel face model. Versions of the measuring system for both conventional and mechanised tunnelling have been developed. From the 3D model, high-quality digital products as well as geometric and geological parameters can be derived, which serve as a basis for decisions on-site. The data can then be integrated into the geological information system TUGIS.NET of Geoconsult, merged there with other data and further (geologically) evaluated, analysed and visualised. A spatial model that has been interpreted and quantified by the geologist can be established and used for target/actual comparisons and forecasts. The model can be transferred into building information modeling (BIM)-compatible data structures for integration into an overall BIM model of the project. The further automation and digitalisation of the geological documentation and the full documentation (geometry and geology) of the face area are achieved in the interaction of the systems mentioned. x | |||||
Hofer, Peter; Eder, Julian; Hager, Lukas; Strauß Bakk, Clemens; Jacobs, Sebastian | RApid Data Integration and Visualization (RADIV) in Subsurface Operations | Geomechanics and Tunnelling | 3/2022 | 305-310 | Topics |
KurzfassungComplex subsurface operations are characterized by a life-threatening environment, a skilled and initiative opponent, and the absence of predictability of the events due to a high level of interdependencies. The reduction of complexity by provision of essential information is crucial for decision-making and rapid integration and visualization of heterogeneous data is essential for successful mission accomplishment. Currently, only standalone applications are available for the underground operational environment, and collaborative planning and working spaces in command and control are missing. The RApid Data Integration and Visualization (RADIV) process addresses exactly this challenge and ensures the lateral continuity of visualization systems across the entire reality-virtuality continuum (2D ó 3D ó mixed reality). It provides a comprehensive command and control system for subterranean operations by processing and visualizing data in different views for different purposes. Integration of these data within the Subsurface Operations Mission Tool (SOMT) will increase the decision quality by improved perception and collaboration. Close cooperation and information exchange between operators and action forces is a prerequisite for success by displaying the relevant information within the truly comprehensive common operational picture, thereby enabling more accurate and precise action reducing own losses and collateral damage. x | |||||
Dorninger, Peter; Studnicka, Nikolaus | Efficient digitization of the Zentrum am Berg research tunnel - From laser scan to triangulated surface model within one day | Geomechanics and Tunnelling | 3/2022 | 311-316 | Topics |
KurzfassungUnthinkable just a few years ago, the precise laser-scanning survey of a kilometer-long tunnel in one day by one operator has become possible. This article describes how 261 scans were taken with a RIEGL VZ-400i laser scanner to digitize the Zentrum am Berg (ZaB) research tunnel with millimeter resolution. The data has been automatically registered during the acquisition process within the instrument. After applying multistation adjustment, a block adjustment postprocess step, the high accuracy of the point cloud with respect to a network of 35 retroreflective bireflex targets has been approved. For further applications such as analysis, simulation, or visualization, a homogeneous 3D-meshed surface model has been created automatically from the point cloud representing an as-built 3D documentation of the tunnel. x | |||||
Konstantis, Spyridon; Prountzopoulos, George; Spyridis, Panagiotis | Ensuring face support and control in soft ground urban tunnels: FEM validation | Geomechanics and Tunnelling | 3/2022 | 317-326 | Topics |
KurzfassungWhen designing and constructing a tunnel in an urban setting with the use of a closed face Tunnel Boring Machine (TBM), the objective is to ensure both the tunnel face stability and the control of induced ground deformations within predefined, acceptable limits. Unless the exerted active face pressure will match the in situ ground stresses, there will be ground deformations taking place in the advance core, i.e., face extrusion and pre-convergence, resulting in settlements or heave for active pressure lower or higher than the in situ stresses, respectively. This article presents the validation through finite element method (FEM) of an analytical methodology that can be applied on soft ground urban tunnels to assess the level of active face support to be considered in numerical analysis, to ensure elastic relaxation in the advance core and thus effective ground deformation control. The methodology combines the classic Anagnostou and Kovari method with the Convergence-Confinement method for face support proposed by Aristaghes and Autuori. In the current article, the methodology is described in detail and subsequently validated through three-dimensional FEM analyses. The article concludes with a discussion on the results and the applicability range of the methodology. x | |||||
Site Reports: Geomechanics and Tunnelling 3/2022 | Geomechanics and Tunnelling | 3/2022 | 327-328 | Site Reports | |
KurzfassungLinz A26 West Bypass Expansion to relieve traffic in Upper Austria - Ausbau des Linzer Westring A26 soll Verkehr in Oberösterreich entlasten x | |||||
Diary of Events: Geomechanics and Tunnelling 3/2022 | Geomechanics and Tunnelling | 3/2022 | 329-330 | Diary of Events | |