Blar i Institutt for konstruksjonsteknikk på forfatter "Kaynia, Amir M."
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Behavior of slopes under multiple adjacent footings and buildings
Raj, Dhiraj; Singh, Yogendra; Kaynia, Amir M. (Journal article; Peer reviewed, 2018)This article examines the response of soil slopes under adjacent embedded strip foundations, subjected to increasing vertical load due to the gravity load of buildings. The study also considers slopes under closely spaced ... -
Characteristics of cyclic undrained model SANISAND-MSu and their effects on response of monopiles for offshore wind structures
Liu, Haoyuan; Kaynia, Amir M. (Journal article; Peer reviewed, 2021) -
Earthquake Geotechnics in Offshore Engineering
Kaynia, Amir M. (Chapter, 2018)This paper presents a number of geotechnical issues encountered in earthquake design of offshore structures and subsea facilities. Parallel with construction of traditional structures such as jackets and gravity-based ... -
Earthquake response of offshore wind turbines including nonlinear soil-structure interaction
Sherzad, Poya (Master thesis, 2022)Langt fra kysten er fralandsvinden rikelig og renere i forhold til på land, da det unngår hindringer som bakker, bygninger og andre menneskelige aktiviterer. Men jo lenger unna kysten offshore vindturbinene (OWT) bygges, ... -
Effect of foundation type and modelling on dynamic response and fatigue of offshore wind turbines
Løken, Ingrid Bye; Kaynia, Amir M. (Peer reviewed; Journal article, 2019)This paper presents dynamic response and fatigue analyses of several bottom-mounted offshore wind turbine (OWT) models, simulated in the aero-hydro-servo-elastic simulation tool FAST. The distinction between the models is ... -
Effect of foundation type and modelling on dynamic response and fatigue of offshore wind turbines
Løken, Ingrid Bye; Kaynia, Amir M. (Journal article; Peer reviewed, 2019)This paper presents dynamic response and fatigue analyses of several bottom‐mounted offshore wind turbine (OWT) models, simulated in the aero‐hydro‐servo‐elastic simulation tool FAST. The distinction between the models is ... -
Effect of kinematic interaction on seismic response of offshore wind turbines on monopiles
Kaynia, Amir M. (Peer reviewed; Journal article, 2020)Interest in renewable energy over the past decade has motivated a remarkable research on offshore wind energy. Due to the environmental loading conditions in the early developments of offshore wind farms, the focus of the ... -
Estimating modal damping due to hysteric soil behaviour and its effect on fatigue response of offshore wind structures on jackets and monopiles
Sæland, Magnus Kornelius; Linde, Øystein Morken (Master thesis, 2022)Utmatting er en vesentlig faktor i dimensjoneringen av offshore vindturbiner. Det har blitt vist at jorddemping påvirker utmattingslevetider. Til tross for viktigheten av jorddemping så er det ingen enighet i fagmiljøet ... -
Estimating modal damping due to hysteric soil behaviour and its effect on fatigue response of offshore wind structures on jackets and monopiles
Linde, Øystein Morken; Sæland, Magnus Kornelius (Master thesis, 2022)Utmatting er en vesentlig faktor i dimensjoneringen av offshore vindturbiner. Det har blitt vist at jorddemping påvirker utmattingslevetider. Til tross for viktigheten av jorddemping så er det ingen enighet i fagmiljøet ... -
Evaluation of effect of confinement on the collapse probability of reinforced concrete frames subjected to earthquakes
Øystad-Larsen, Nina; Erduran, Emrah; Kaynia, Amir M. (Journal article; Peer reviewed, 2017)Confinement of reinforced concrete members has repeatedly proven crucial when structures are exposed to strong ground motions. Yet, unconfined concrete is still widely used in developing countries with significant seismic ... -
Fragility Assessment of Transportation Infrastructure Systems Subjected to Earthquakes
Argyroudis, Sotiris; Mitoulis, Stergios; Kaynia, Amir M.; Winter, Mike G. (Chapter, 2018)This paper provides a review of the different methodologies for the fragility assessment of critical transportation infrastructure subjected to earthquake excitations with emphasis placed on geotechnical effects. Available ... -
Fragility of transport assets exposed to multiple hazards: State-of-the-art review toward infrastructural resilience
Argyroudis, Sotiris; Mitoulis, Stergios A.; Winter, Mike G.; Kaynia, Amir M. (Journal article; Peer reviewed, 2019)Vulnerability is a fundamental component of risk and its understanding is important for characterising the reliability of infrastructure assets and systems and for mitigating risks. The vulnerability analysis of infrastructure ... -
Kinematic response of vertical and batter pile groups in non-linear soft soil
Cemalovic, Miran; Husebø, Jan Bernt; Kaynia, Amir M. (Peer reviewed; Journal article, 2022)This paper presents a comprehensive numerical study on kinematic response of vertical and batter pile groups in soft soil, where soil non-linearity, batter angle, pile spacing and excitation frequency are related to pile-cap ... -
Monopile responses to monotonic and cyclic loading in undrained sand using 3D FE with SANISAND-MSu
Liu, Haoyuan; Kaynia, Amir M. (Peer reviewed; Journal article, 2021)Monopile response under undrained conditions in sand is gaining increasing interests owing to the recent development of offshore wind farms in seismic regions. Pore pressure evolution in liquefiable soil can significantly ... -
Nonlinear soil-pile interaction for offshore wind turbines
Markou, Athanasios; Kaynia, Amir M. (Journal article; Peer reviewed, 2018)The current work presents a parametric study, which involves different generalized nonlinear mechanical formulations with different damping characteristics to account for the interaction between a monopile‐supported offshore ... -
Numerical model for dynamic installation of large diameter monopiles
Kaynia, Amir M.; Hebig, Jan; Pein, Taisiya; Shin, Yunsup (Peer reviewed; Journal article, 2022)This paper presents the numerical code VibPile for simulation of the nonlinear dynamic response of large monopiles under harmonic loading and installation by vibration or impact driving. VibPile is based on a nonlinear FE ... -
Numerical modeling of liquefaction and its impact on anchor piles for floating offshore structures
Esfeh, Pourya Kazemi; Kaynia, Amir M. (Journal article; Peer reviewed, 2019)Anchor piles and suction anchors have been used for anchoring different types of offshore structure in the past four decades. The recent growing interest and demand for wind energy has motivated the industry to evaluate ... -
Performance of a Linear Solution for Approximating Nonlinear Response of Reinforced Concrete Structures Subjected to Earthquake Shaking
Kariuki, Kevin; Heen, Tarjei; Kaasa, Lars Halvor; Kaynia, Amir M. (Chapter, 2020)Nonlinear Time History Analyses (NTHA) are generally regarded as the most accurate way of predicting the dynamic response of a structure to a given seismic ground motion. However, these types of analyses are computationally ... -
Practical macro-element for vertical and batter pile groups
Cemalovic, Miran; Castro, José Miguel; Kaynia, Amir M. (Journal article; Peer reviewed, 2022) -
Predictive Models for Earthquake Response of Clay and Sensitive Clay Slopes
Kaynia, Amir M.; Saygili, Gökhan (Geotechnical, Geological and Earthquake Engineering;Predictive Models for Earthquake Response of Clay and Sensitive Clay Slopes, Journal article; Peer reviewed, 2014)Earthquake-induced permanent displacement and shear strain are suitable indicators in assessing the seismic stability of slopes. In this paper, predictive models for the permanent displacement and shear strain as functions ...