Blar i NTNU Open på forfatter "Ghoreishian Amiri, Seyed Ali"
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Pile Loading Test in Permafrost - Back Analysis of Settlements Using an Elasto-Viscoplastic Model
Farnes Hennum, Tilla (Master thesis, 2023)Løsmasser i permafrost vil ha en høyere bæreevne og en lavere setningsrate en tilsvarende ikke-frosne løsmasser. Tradisjonelt har derfor løsmasser i permafrost vært et stabilt og pålitelig materiale for fundamentering. ... -
Pore-water pressure development in a frozen saline clay under isotropic loading and undrained shearing
Lyu, Chuangxin; Nishimura, Satoshi; Ghoreishian Amiri, Seyed Ali; Zhu, Feng; Eiksund, Gudmund Reidar; Grimstad, Gustav (Peer reviewed; Journal article, 2021)A systematical testing program on frozen Onsøy clay under isotropic loading and undrained shearing at different temperatures (− 3 ~ − 10 °C), strain rates (0.2~5%/h) and initial Terzaghi effective stress (20~400 kPa) was ... -
Report on calibrated and validated numerical models to estimate site specific stability of coastal infrastructure in a changing climate with thawing permafrost
Lubbad, Raed Khalil (Research report, 2022)This report presents an overview of the costal erosion model and the infrastructure stability model that are capable of predicting the site-specific response to the global warming and thawing permafrost. The models are ... -
Report on Field Investigation and Long-Term Plate Loading test in Permafrost
Ghoreishian Amiri, Seyed Ali (Research report, 2023)This report presents a comprehensive overview of field investigations and large-scale plate loading tests conducted at the UNIS East site in Longyearbyen from March 2020 to July 2023. These tests were undertaken as part ... -
A set of hyper-viscoplastic critical state models with different friction mobilisation criteria
Dadrasajirlou, Davood; Grimstad, Gustav; Ghoreishian Amiri, Seyed Ali; Nordal, Steinar (Peer reviewed; Journal article, 2023)The approach of thermodynamics with internal variables, known as hyperplasticity, is used to develop a set of hyper-viscoplastic clay models that comply with the critical state soil mechanics and isotache viscosity. Different ... -
Thermo-Hydro-Mechanical simulations of artificial ground freezing
Cicchetti, Lorenzo (Master thesis, 2018)Hundreds of thousands of people in Alaska, Canada, Russia, and Greenland live on permafrost, which covers nearly 24% of the northern hemisphere (National Snow and IceData Center, 2018). Living conditions can be challenged ... -
Thermo-Hydro-Mechanical simulations of Artificial Ground Freezing
Cicchetti, Lorenzo; Grimstad, Gustav; Ghoreishian Amiri, Seyed Ali; Ingeman-Nielsen, Thomas (Chapter, 2018) -
Transport coefficients and pressure conditions for growth of ice lens in frozen soil
Kjelstrup, Signe; Ghoreishian Amiri, Seyed Ali; Loranger, Benoit; Gao, Hao; Grimstad, Gustav (Peer reviewed; Journal article, 2021)In this paper, the transport of sub-cooled water across a partially frozen soil matrix (frozen fringe) caused by a temperature difference over the fringe, is described using non-equilibrium thermodynamics. A set of coupled ... -
Unified bounding surface model for monotonic and cyclic behaviour of clay and sand
Moghadam, Seyed Iman; Taheri, Ehsan; Ahmadi, Morteza; Ghoreishian Amiri, Seyed Ali (Journal article; Peer reviewed, 2022)This paper presents a constitutive model enabled to simulate monotonic and cyclic behaviour of clay and sand in a unified framework. The bounding surface concept has been utilized to predict a smooth transition from elastic ...