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Browsing NTNU Open by Author "Øiseth, Ole Andre"

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Now showing items 1-20 of 51

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    • Aerodynamic Effect of Non-uniform Wind Profiles for Long-Span Bridges 

      Lystad, Tor Martin; Fenerci, Aksel; Øiseth, Ole Andre (Chapter, 2019)
      Long-span bridges are often designed based on the assumption of wind field homogeneity. At the Hardanger Bridge, the wind field along the bridge span is monitored though 8 triaxial ultrasonic anemometers. Simultaneously ...
    • Aerodynamic Stability of Long-span Suspension Bridges 

      Dalen, Magnus Aa (Master thesis, 2016)
      A MATLAB script for making customized finite element models of suspension bridges is created. The main purpose of the script is to perform eigenvalue analysis of different bridge setups to investigate the controlling ...
    • Aeroelastic stability of a suspension bridge crossing the Sognefjord 

      Røe Maurset, Håvard (Master thesis, 2012)
      This thesis discusses the possibility of constructing a suspension bridge crossing the Sognefjord in light of the aeroelastic stability. A preliminary design has been carried out and a finite element model created in order ...
    • Buffeting response of long-span bridges considering uncertain turbulence parameters using the environmental contour method 

      Lystad, Tor Martin; Fenerci, Aksel; Øiseth, Ole Andre (Peer reviewed; Journal article, 2020)
      Full-scale monitoring of the Hardanger Bridge has revealed significant turbulence-induced variability in the measured acceleration response. In this paper, a probabilistic model is used to describe the uncertain turbulence ...
    • Creating and Testing Continuous Acquisition Software with GPS Timestamps 

      Sandberg, Eirik Ferdinand (Master thesis, 2017)
      The main objective of this thesis has been to write software in LabVIEW enabling GPS time synchronization between several Compact RIOs when performing continuous acquisition of acceleration data. By providing GPS timestamps ...
    • Design of a monitoring system for a long-span suspension bridge: optimal sensor placement 

      Petersen, Øyvind Wiig; Øiseth, Ole Andre; Frøseth, Gunnstein Thomas (Chapter, 2020)
      The design of systems for structural health monitoring is an exercise that requires careful planning of optimal sensor locations. The number of possible locations usually outnumbers the number of available sensors, which ...
    • Design of an experimental setup for measurements of the aerodynamic properties of bridge decks 

      Kaasa, Lars Halvor (Master thesis, 2012)
      As modern bridge design continuously aims for longer and slender bridges, it is necessary to be able to determine aerodynamic properties of such structures with a highdegree of accuracy. The horizontal degree of freedom ...
    • Dynamic behaviour of cablesupported bridges subjected to strong natural wind 

      Øiseth, Ole Andre (Doktoravhandlinger ved NTNU, 1503-8181; 2011:315, Doctoral thesis, 2011)
      This thesis discusses wind-induced dynamic response of slender cable-supported bridges. The focus has been on prediction of the flutter stability limit and the buffeting response in strong winds. The thesis consists of ...
    • Dynamic buckling of end anchored floating bridges 

      Østby, Ingvild Kristine Haug; Storheim, Ørjan (Master thesis, 2018)
      The Bjørnafjord bridge is a floating bridge planned to be a part of The Norwegian Public Roads Administrations ferry-free road project along E39. This thesis looks into the dynamic behavior of this bridge, focusing of ...
    • Dynamic response of a multi-span suspension bridge with floating pylons 

      Mjaaland, Anders Lessø; Øvstebø, Audun Mathias (Master thesis, 2017)
      The Norwegian Public Roads Administration is currently investigating the possibility of crossing the 500 m deep and 5 km wide fjord, Bjørnafjorden, located in Norway. Several concepts have been developed on behalf of the ...
    • Dynamic Response of Suspension Bridge with Floating Towers 

      Gong, Shun Wei (Master thesis, 2016)
      The Norwegian Public Road Administration has been investigating the possibilities ofcrossing the fjords on the west coast of Norway for the coastal highway E39 project.For the 5 km wide Bjørnafjorden ...
    • Dynamic Response of Suspension Bridge with floating Towers 

      Halden, Sondre (Master thesis, 2016)
      The Norwegian Public Road Administration has been investigating the possibilities of crossing the fjords on the west coast of Norway for the coastal highway E39 project. For the 5 km wide Bjørnafjorden a floating three ...
    • Estimation of Aerodynamic Admittance Using Pressure Tap Measurements - Wind Tunnel Testing of the Hardanger Bridge Deck 

      Høydal, Johannes Hov; Birkeland, Vilde Åsnes (Master thesis, 2017)
      The studies done in this master thesis focused on building a Hardanger Bridge deck section model and developing an experimental method using pressure tap measurements for finding aerodynamic properties. The measuring ...
    • Estimation of Aerodynamic Forces on a Railway Contact Wire and Their Effect on Galloping Instability - Wind Tunnel Testing of an AC-120 Contact Wire 

      Elvebakken, Andrea Rokke (Master thesis, 2018)
      The objective of this master thesis was to determine the static aerodynamic forces on a contact wire, presented as static coefficients and the Strouhal number. The static coefficients were used in a galloping analysis on ...
    • Fatigue damage in an offshore wind turbine using probability density evolution 

      Eiken, Odd (Master thesis, 2017)
      Due to large variability of the offshore environment, the load analysis of an offshore wind turbine is a complex task. It is normally performed in the time domain, by running Monte Carlo simulations. However, this is usually ...
    • Force identification and response estimation in floating and suspension bridges using measured dynamic response 

      Petersen, Øyvind Wiig (Doctoral theses at NTNU;2019:88, Doctoral thesis, 2019)
      The trend of constructing bridges that are longer, more slender, and more flexible increases the importance of the assessment of dynamic behavior. Herein, it is imperative to have a good understanding of the environmental ...
    • Full-scale investigation of the effects of wind turbulence characteristics on dynamic behavior of long-span cablesupported bridges in complex terrain 

      Fenerci, Aksel (Doctoral theses at NTNU;2018:100, Doctoral thesis, 2018)
      The global demand for long-span cable-supported bridges are emerging. Impressive number of projects have been realized in the last two decades and many more projects are in their planning, design or construction phases ...
    • Heuristic models for wear prediction and dynamic-based condition monitoring techniques in pantograph-catenary interaction 

      Derosa, Stefano (Doctoral theses at NTNU;2020:381, Doctoral thesis, 2020)
      Railway catenaries are key components of electric railways, representing for the trains both their power source and their performance limiter. Although the amount of electrified railways is noticeably lower than the ...
    • Inverse identification of buffeting and self-excited wind loads on the {Hardanger} bridge from acceleration data 

      Petersen, Øyvind Wiig; Øiseth, Ole Andre; Nord, Torodd Skjerve; Lourens, Eliz-Mari (Chapter, 2019)
      The traditional wind load assessment for long-span bridges rely on assumed models for the wind field and aerodynamic coefficients from wind tunnel tests, which usually introduces some uncertainties. It is therefore desired ...
    • Investigation of dynamic wind loads on a long-span suspension bridge identified from measured acceleration data 

      Petersen, Øyvind Wiig; Øiseth, Ole Andre; Lourens, Eliz-Mari (Journal article; Peer reviewed, 2020)
      The traditional wind load assessment for long-span bridges relies on assumed models for the wind field and aerodynamic coefficients from wind tunnel tests, which usually introduce some uncertainties. Recent studies have ...

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