Browsing Norwegian Geotechnical Institute (NGI) Digital Archive by Author "Grimstad, Gustav"
Now showing items 1-11 of 11
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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 (Peer reviewed; Journal article, 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 ... -
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, 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 ... -
Behaviour of 60-year-old trial embankments on peat
Long, Michael; Paniagua Lopez, Ana Priscilla; Grimstad, Gustav; Sponås, Egil Berg Antoniazzi; Bjertness, Endre; Ritter, Stefan (Peer reviewed; Journal article, 2023) -
Creep of geomaterials – some finding from the EU project CREEP
Grimstad, Gustav; Karstunen, Minna; Jostad, Hans Petter; Sivasithamparam, Nallathamby; Mehli, Magne; Zwanenburg, Cor; Evert, den Haan; Ghoreishian Amiri, Seyed Ali; Boumezerane, Djamalddine; Kadivar, Mehdi; Haji Ashrafi, Mohammad Ali; Rønningen, Jon A. (Peer reviewed; Journal article, 2017) -
Engineering properties of Norwegian peat for calculation of settlements
Long, Mike; Paniagua Lopez, Ana Priscilla; Grimstad, Gustav; Trafford, Andrew; Degago, Samson Abate; L Heureux, Jean-Sebastien (Peer reviewed; Journal article, 2022) -
Evaluation of Pile Driving Effects on Slope Stability in Clay
Attari, Yeganeh; Jostad, Hans Petter; Grimstad, Gustav; Eiksund, Gudmund Reidar (Peer reviewed; Journal article, 2023) -
Modelling mesh independent failure loads of a soft strain-softening clay using a rate dependent model
Rødvand, Laura Anne; Jostad, Hans Petter; Grimstad, Gustav; Andresen, Lars (Peer reviewed; Journal article, 2023) -
Stability analyses of quick clay using FEM and an anisotropic strain softening model with internal length scale
Grimstad, Gustav; Jostad, Hans Petter (Chapter, 2012)Sensitive soft clays generally display a significant post peak strain softening response under undrained deformation. A consequence of this behavior is that the safety factor during undrained stress changes cannot be ... -
Strain localisation in sensitive clays: can rate dependency provide mesh independent results?
Rødvand, Laura Anne; Jostad, Hans Petter; Grimstad, Gustav; Andresen, Lars (Peer reviewed; Journal article, 2022)