Blar i NTNU Open på forfatter "Eiksund, Gudmund Reidar"
-
3D-effekter i analyser av seksjonsvis utgraving
Viken, Andrea Trebostad (Master thesis, 2022)Skråningsstabilitet blir hovedsakelig betraktet som et 2D-problem selv om alle utglidinger er tredimensjonale i naturen. Korrekte 2D-analyser forutsetter plan tøyningstilstand. Det er utviklet flere kraftfulle beregningsprogrammer ... -
A Comparison of Railway Load Models for Geotechnical Analysis
Christiansen, Thea Lind (Master thesis, 2018)Bane NOR is responsible for developing the railway network in Norway. In Norway, the Eurocodes are specifying how structural design in general should be conducted. This also applies to the railways. To guide those responsible ... -
A Discrete Element Method Study of Shear Localisation in Granular Material
Løvdahl, Erik (Master thesis, 2020)En fleksibel grensebetingelse er implementert for simulerte trykktester i diskret elementmetode (DEM) programmet Yade. DEM simulerer individuelle partikler i et granulært materiale. Med enkle kontaktlover og fysikk på ... -
A macro model for shallow foundations on granular soils describing non-linear foundation behavior
Tistel, Joar; Grimstad, Gustav; Eiksund, Gudmund Reidar (Journal article; Peer reviewed, 2017)This paper describes a macro model for a shallow foundation. The macro model represents the non-linear soil structure interaction (SSI) exemplified by a suspension bridge anchor-block. The model can be adjusted and used ... -
A macro-element for integrated time domain analyses representing bucket foundations for offshore wind turbines
Skau, Kristoffer Skjolden; Grimstad, Gustav; Page, Ana M.; Eiksund, Gudmund Reidar; Jostad, Hans Petter (Journal article; Peer reviewed, 2018)The paper presents a macro-element model for bucket foundations to be used in integrated time domain analyses of offshore wind turbines. The macro-element has been formulated in the multi-surface plasticity framework, and ... -
A macro-element model for multidirectional cyclic lateral loading of monopiles in clay
Page, Ana M.; Grimstad, Gustav; Eiksund, Gudmund Reidar; Jostad, Hans Petter (Journal article; Peer reviewed, 2018)This paper investigates numerically the impact of multidirectional cyclic loads on the response of a monopile in clay supporting an offshore wind turbine (OWT). The results indicate that multidirectional loading modifies ... -
A macro-element pile foundation model for integrated analyses of monopilebased offshore wind turbines
Page, Ana M.; Grimstad, Gustav; Eiksund, Gudmund Reidar; Jostad, Hans Petter (Journal article; Peer reviewed, 2018)The design of OWTs relies on integrated load analyses tools that simulate the response of the entire OWT (including the rotor-nacelle assembly, support structure and foundation) under combined aerodynamic and hydrodynamic ... -
A New Foundation Model for Integrated Analyses of Monopile-based Offshore Wind Turbines
Page, Ana M.; Skau, Kristoffer Skjolden; Jostad, Hans Petter; Eiksund, Gudmund Reidar (Journal article; Peer reviewed, 2017)Offshore wind turbines are highly dynamic and tightly coupled systems subjected to variable cyclic loads. Designing and optimizing the support structure is a complex task, where several load scenarios have to be analysed ... -
A study of the Dynamic Properties of Quick Clay from Flotten NGTS - with Particular Interest in Anisotropy and Stress Relief During Unloading
Beeston, Amy (Master thesis, 2018)The stiffness of a soil is of great importance in many areas of geotechnical engineering. It forms the link between strain and stress, which is crucial in incremental numerical modelling. More specific to this study, the ... -
Advanced Probabilistic Slope Stability Analysis on Rissa Slope
Wolebo, Amanuel Petros (Master thesis, 2016)Probabilistic analysis is powerful in investigating the influence of uncertainties on a given geotechnical problem. The way to conduct an uncertainty quantification in geotechnical engineering is shown in a particular case ... -
Alternative Numerical Pile Foundation Models for Integrated Analyses of Monopile-based Offshore Wind Turbines
Page, Ana M.; Schafhirt, Sebastian; Eiksund, Gudmund Reidar; Skau, Kristoffer Skjolden; Jostad, Hans Petter; Sturm, Hendrik (Chapter, 2016)Lowering the cost for offshore wind energy remains a major challenge. Increasing the accuracy of analysis tools used in the design and optimization process can strengthen the reliability and reduce conservatism, thereby ... -
An anisotropic shear strength model for cyclic accumulated plastic strain of overconsolidated clay
Cai, Fang; Eiksund, Gudmund Reidar; Grimstad, Gustav; Jostad, Hans Petter (Journal article; Peer reviewed, 2014)Many geotechnical problems involve calculation of the permanent deformation of overconsolidated clay under undrained cyclic loading. There are many existing methods in the literature which have been made for predicting ... -
Analysis of monopile in Hokksund sand under drained cyclic loading condition using SANISAND-MS constitutive model
Shrestha, Kristina (Master thesis, 2024)Wind energy is one of the widely used renewable energy sources in today’s world. During the last decade, offshore wind energy has grown into a large green energy supplier in Europe due to its advantages over other energy ... -
Assessment on Time Determination of Bender Element Test: Insights frem FEM Simulations and Laboratory Methodology
Gjertsen, Magnus Borg; Høntorp, Kristian Willmann (Master thesis, 2024)Den initielle skjærmodulen, G0, er en viktig parameter i det geotekniske ingeniørfeltet, spesielt for å kunne forutsi jordens oppførsel under dynamisk og sykliske laster. Denne modulen er assosiert med tøyninger mindre enn ... -
Assessment on Time Determination of Bender Element Test: Insights from FEM Simulations and Laboratory Methodology
Gjertsen, Magnus Borg; Høntorp, Kristian Willmann (Master thesis, 2024)Den initielle skjærmodulen, G0, er en viktig parameter i det geotekniske ingeniørfeltet, spesielt for å kunne forutsi jordens oppførsel under dynamisk og sykliske laster. Denne modulen er assosiert med tøyninger mindre enn ... -
Automatisering av spuntberegninger
Hansen, Dina Erika Karlsen (Master thesis, 2021)Plaxis remote scripting er et programmeringsgrensesnitt som gjør det mulig å styre Plaxis Input og Output ved hjelp av standardiserte kommandoer i programmeringsspråket Python. Når Plaxis styres med Python-kommandoer kan ... -
Bearing Capacity Analysis Over Mudmat Foundations Under Multidimensional Loading
HERAVI, GHAZALEH (Master thesis, 2018)The ultimate bearing capacity is at its maximum when the foundation is under pure vertical loading. In the field, pure vertical loading is the least likely load combination to happen but, it is mostly combined loading ... -
Bearing capacity failure envelope of suction caissons subjected to combined loading: Fortsettelse fra prosjektoppgave
Sørlie, Erik (Master thesis, 2013)The objective of the master thesis is to use the failure envelope approach to determine the ultimate capacities of a suction anchor, and to establish a strain-hardening elasto-plastic model in terms of loads and displacements ... -
Bearing capacity failure envelopes of foundations with skirts subjected to combined loading
Meng, Qiuhong (Master thesis, 2013)The bearing capacity of the foundation is reduced in combination with horizontal loads and moments, and can be further reduced when torsion moment is applied. Therefore, torsion moment must be taken into account when ... -
Behaviour of piles in clay subjected to cyclic lateral loading
Støren, Andrea Strand (Master thesis, 2018)In order to make offshore wind turbines more cost-efficient and competitive in international energy markets, design methods must be improved to reduce uncertainties in load and soil modelling. The current method of modelling ...