Blar i NTNU Open på forfatter "Nordal, Steinar"
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Modelling Seasonal Stability of Shallow Glacial Till on Steep Rock Slopes in Southeast Norway via Finite Element Analysis - A Case Study
Lange, Frieda (Master thesis, 2018)One of the most common geohazards in the mountainous regions of Norway are debris slides in shallow glacial till horizons overlying steep valley slopes of various bedrock. The predictions pro-duced by the established ... -
Modelling Thawing Slope Stability of Arctic Coast
Sundal, Silje (Master thesis, 2016)Through a literature study, different aspects of frozen ground, physical properties, mechanical behavior of frozen ground, the relation between permafrost and climate, and erosional processes are described. The mechanical ... -
Multi-Temporal Satellite Image Composites in Google Earth Engine for Improved Landslide Visibility: A Case Study of a Glacial Landscape
Lindsay, Erin; Frauenfelder, Regula; Ruther, Denise Christina; Rubensdotter, Brita Lena Eleonor Fredin; Strout, James Michael; Nordal, Steinar (Peer reviewed; Journal article, 2022)Regional early warning systems for landslides rely on historic data to forecast future events and to verify and improve alarms. However, databases of landslide events are often spatially biased towards roads or other ... -
Norway's National GeoTest Site Research Infrastructure (NGTS)
L'Heureux, Jean-Sébastien; Lunne, Tom; Lacasse, Suzanne; Carroll, Roselyn; Strandvik, Stein Oddvar; Instanes, Arne; Sinitsyn, Anatoly; Degago, Samson Abate; Nordal, Steinar (Chapter, 2017)Benchmarking is a key to the reliability of the solutions in geotechnical engineering, both for testing and verifying innovative soil investigation methods and verifying and calibrating foundation solutions. NGI and its ... -
Numerical and Analytical Analysis of Geogrid Reinforced Soil Wall Subjected to Dynamic Loading
Holst, Martin (Master thesis, 2012)The potential human and economic loss due to structural collapse of geo-synthetic reinforced soil walls during earthquakes us huge. This substantiates the need for reliable design of such structures. The focus of this study ... -
Numerical Modelling of Laterally Loaded Piles in PLAXIS 3D - A study on embedded pile and soil response in PLAXIS 3D under lateral load
Liu, Xiaoou (Master thesis, 2016)Embedded pile element in PLAXIS 3D is an efficient method for pile foundation modelling. The current project provides an overall study on the embedded pile and surrounding soil response in PLAXIS 3D. The finite element ... -
Numerisk Analyse av Jordnalger i PLAXIS 2D
Jensen, Elin Marie Strand (Master thesis, 2021)Det er stor enighet i forskningsmiljøer om prinsippene bak jordnagling og at jordnagling er en effektiv metode for skråningsstabilisering. Fasene i forkant av selve byggingen av støttekonstruksjonen: beregningsprinsipper, ... -
Numerisk og analytisk analyse av støttekonstruksjoner ved jordskjelvbelastning
Gjelseth, Stephanie L (Master thesis, 2013)Denne masteroppgaven omhandler jordskjelvrespons av støttekonstruksjoner. Hensikten er å studere om de to vanlige analysemetodene for støttekonstruksjoner, det vil si Mononobe-Okabe (M-O) og pseudo-statisk (P-S) metode, ... -
On Determination of Gmax by Bender Element and Cross-Hole Testing
Knutsen, Mirjam (Master thesis, 2014)The small-strain shear modulus, Gmax, is an important parameter in geodynamic problems and for advanced modelling. Gmax is influenced by several factors, which complicates the assessment and interpretation of test results. ... -
On modelling of anisotropic undrained strength for non-horizontal terrain
Nordal, Steinar; Grimstad, Gustav; Jordbakke, Tormod; Rabstad, Kristoffer; Isachsen, Marit (Chapter, 2018)Low plasticity soft clays show pronounced variation in undrained shear strength with the direction of loading. The active undrained shear strength (A) is significantly larger than the direct shear strength (D), which again ... -
On Shear Wave Velocity Testing in Clay
Eide, Henrik Takle (Master thesis, 2015)The soil stiffness at small strains is an important parameter for settlement predictions and for understanding soil behaviour under seismic/dynamic loading. The small strain stiffness is usually found from the shear wave ... -
On the convexity of yield and potential surfaces in rotational hardening critical state models
Rønningen, Jon Abusland; Grimstad, Gustav; Nordal, Steinar (Chapter, 2018)This article shows that a common formulation often used for an anisotropic modified cam clay yield and potential surface with a modified Lode angle dependency may become concave for high values of anisotropy. Concave ... -
Passive Earth Pressures and Related Deformations of Bridge Abutments - Back Calculation of Passive Earth Pressure Load Tests
Romstad, Mari Melhus (Master thesis, 2018)In this thesis the earth pressure theories developed by Rankine, Coulomb, Terzaghi and Janbu have been studied and used for hand calculations. The theories are based upon a series of simplifications and idealizations, and ... -
Physical experiments on CPTU thin-layer effects of thin clay layers embedded in sand
Hammer, Hallvard Berner (Master thesis, 2020)CPTU er et utmerket verktøy for å karakterisere stratigrafi og målinger kan brukes til parametertolkning i homogene jordarter. Målinger i lagdelt jord med tynne lag, relativt til diameteren på sonden, vil påvirkes betydelig ... -
Physical experiments on CPTU thin-layer effects of thin clay layers embedded in sand - With analysis and possible correction of cone resistance in layered profiles
Hammer, Hallvard Berner (Master thesis, 2020)Abstract: The cone penetrometer is an excellent tool to characterize stratigraphy and have good abilities for parameter interpretation in homogenous soils. However, in soils with small layer thickness, in terms of cone ... -
Physical Modeling of Debris Flow by Varying Sediment Concentration
Nhuchhen Pradhan, Rosy (Master thesis, 2017)Debris flow is the natural hazard occurring in the mountainous topography. The geography of Norway mostly consists of sloppy terrain with higher steepness. The country receives heavy rainfall every year which is in fact ... -
Physical modelling of pile drilling in sand
Lande, Einar John; Ritter, Stefan; Tyvold, Henning Fürst; Nordal, Steinar (Journal article; Peer reviewed, 2021)Drilling for foundation piles and tieback anchors through soils using a continuous casing to support the borehole is often referred to as "overburden drilling". Monitoring data from several case studies show that overburden ... -
Pore pressure build-up due to pile driving in clay
Mortensen, Per-Anders (Master thesis, 2019)Dette dokumentet inneholder et litteratursøk inn i noen av de nåværende tilgjengelige metodene for å predikere poreovertrykket som produseres ved peleramming i leire, samt en sammenligning av predikasjonene med måledata. ... -
Poreovertrykk på Øvre Nyhavna
Aune, Fredrik; Østvang, Iver Grav (Master thesis, 2020)Denne oppgaven er knyttet til geotekniske arbeider ved Nyhavna i Trondheim. Det er beskrevet sammenhenger og mulige årsaker til poretrykksutvikling ved stålkjernepeling utført med boring av foringsrør med polymerblandet ... -
Poreovertrykk på Øvre Nyhavna
Aune, Fredrik; Østvang, Iver Grav (Master thesis, 2020)Denne oppgaven er knyttet til geotekniske arbeider ved Nyhavna i Trondheim. Det er beskrevet sammenhenger og mulige årsaker til poretrykksutvikling ved stålkjernepeling utført med boring av foringsrør med polymerblandet ...