Browsing Institutt for konstruksjonsteknikk by Author "Kaynia, Amir"
Now showing items 1-16 of 16
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Aero-Hydro Dynamic Analysis of Offshore Wind Turbine - Implementation of Nonlinear Soil-Structure Interaction in Software FAST
Krathe, Veronica Liverud (Master thesis, 2015)Bottom-mounted offshore wind turbines (OWTs) involve a wide range of engineering fields. Of these, modeling of foundation flexibility has been given little priority. This thesis looks at the modeling of a bottom-mounted ... -
Dynamic Response and Fatigue of Offshore Wind Turbines - Effect of Foundation Type and Modelling Method Using Software FAST
Løken, Ingrid Bye (Master thesis, 2017)This thesis presents dynamic response and fatigue analyses of several bottom-mounted offshore wind turbine models, simulated in the aero-hydro-servo-elastic simulation tool FAST v8. A 5 MW offshore wind turbine supported ... -
Earthquake analysis of structures using nonlinear models
Cemalovic, Miran (Master thesis, 2015)Throughout the governing design codes, several different methods are presented for the evaluation of seismic problems. This thesis assesses the non-linear static and dynamic procedures presented in EN 1998-1 through the ... -
Investigation and Comparison of Methods Accounting for Asynchronous Seismic Ground Motions for Bridges
Høy, Herman; Haughovd, Nils Henrik (Master thesis, 2017)Eurocode 8, part 2, presents various methods to incorporate asynchronous seismic excitation for bridges. Common practice is to use time history analyses due to their high level of accuracy; however, they are computationally ... -
Investigation of RC Structural Behaviour of Wall-Equivalent Dual System through Non-Linear Analyses. - Undersøkelse av den konstruksjonsmessige oppførselen til veggekvivalent dobbeltsystem i armert betong ved hjelp av ikke-lineære analyser
Semere, Samson Amanuel (Master thesis, 2016)The purpose of this thesis is to evaluate the non-linear response of a wall-equivalent dual-system structure. The procedure of the analyses follows the guidelines incorporated in the current Norwegian seismic design code ... -
Jordskjelv analyse av konstruksjoner på peler ved modal superposisjon, og ved forenklede metoder
Kalsås, Wiggo Brandsdal (Master thesis, 2016)Det finnes flere ulike metoder for å gjøre seismisk dimensjonering. De vanligste metodene innebærer en del forenklinger. Eurokodens forenklede metode (tverrkraftmetoden) blir veldig ofte brukt, også for mellomstore bygg. ... -
Jordskjelvrespons av vindturbiner med jord-struktur-interaksjon
Hovind, Erlend (Master thesis, 2013)I denne rapporten er det evaluert jordskjelvrespons for en vindturbin fundamentert med bøttefundament. Ved hjelp av elementprogrammet Abaqus CAE er det etablert en elementmodell av systemet, som inneholder jord, bøttefundament ... -
Non-linear analysis methods in performance-based earthquake engineering
Bjercke, Fredrik (Master thesis, 2016)Over the last decades, increasing computational power is allowing engineers to do more advanced earthquake assessments on structures. The actual performance during seismic loading of buildings can be assessed using complicated ... -
Nonlinear Dynamic Response of Concrete Structure with Soil-Structure Interaction
Talberg, Marte Sørbrøden (Master thesis, 2015)A common assumption for a structure that is subjected to an earthquake is that the structure is considered fixed at the base. In this thesis, analyses where the soil is deformed and the foundation may be moved and rotate ... -
Optimization of Piles Supporting Monopile-Based Offshore Wind Turbines by Improved Foundation Models
Næss, Veronika (Master thesis, 2018)With the focus on renewable energy sources over the last decades, offshore wind has become a popular source of energy harvesting. Among the different foundation concepts, the monopile is, by far, the most favourable for ... -
Respons i en etterspent skjærvegg fra jordskjelvlaster
Ravlo, Stian (Master thesis, 2013)Det ble tatt utgangspunkt i en oppspent veggskive med slakkarmering. Oppgaven gikk ut på å studere hvordan den oppspente armeringen og slakkarmeringen samvirker, når veggskiven utsettes for seismiske påkjenninger.Spennarmeringen ... -
Seismic Response of Wind Turbines: Dynamic Analysis of a Wind Turbine in Horizontal and Vertical Direction - Subject to Earthquake, Wind & SSI
Kjørlaug, Remi André (Master thesis, 2013)For a numerical model of a 5-MW wind turbine, it is shown that vertical excitation from earthquake can produce severe response in the upper parts of the tower. Furthermore, for horizontal excitation it is shown that mainly ... -
Seismic Response of Wind Turbines: Time Domain Simulations Including SSI
Rørvig, Jeanett (Master thesis, 2014)This thesis presents the time-domain seismic response of a parked wind turbine with a skirted foundation exposed to soil-structure interaction. The wind turbine is discretized using the finite element program ABAQUS/CAE ... -
Seismic Response of Wind Turbines: Time domain simulations, including SSI
Amdal, Åse Marit Wist (Master thesis, 2014)In this study, a numerical model of a 5MW offshore wind turbine on a monopile foundation was created in order to calculate the dynamic response of the structure including soil-structure interaction. The main focus was to ... -
The Effects of Numerical Modeling Assumptions in Seismic Design
Roven, Jørgen Rosmo (Master thesis, 2018)Complex numerical models have been developed during the last decades. They are able to model complex phenomena that may occur in a structure when subjected to seismic excitations, including nonlinear material response and ... -
Vertical earthquake response of a Submerged Floating Tunnel including Seaquake loading
Nerland, Lars Amund Rudi; Røsvik, Matias Linde (Master thesis, 2017)This MS thesis investigates vertical seismic response in time domain on the proposed concept for a SFT with vertical tension leg design located at Bjørnafjorden. A 3D beam model is employed to conduct seismic analysis on ...