Parcourir par auteur "Papadimitriou, A. G."
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Accuracy versus simplicity of anisotropic clay models
Papadimitriou, A. G.; Agapoulaki, G. I.; Dafalias, Y. F. (2014)This paper explores the simulative capabilities of a family of simple anisotropic clay models collectively named SANICLAY models. For this purpose, the paper highlights how specific constitutive ingredients provide accuracy ... -
Analysis of fault rupture propagation through uniform soil cover
Loukidis, D.; Bouckovalas, G. D.; Papadimitriou, A. G. (2009)This paper presents results from numerical simulations of the propagation of an active dip-slip fault rupture through a uniform soil layer covering the rigid bedrock. Following verification of the numerical methodology ... -
Anisotropic sand model and fabric evolution until the critical state
Papadimitriou, A. G.; Dafalias, Y. F.; Li, X. S. (2014)This paper presents a simple anisotropic sand model within a recently proposed anisotropic critical state theory (ACST). The model adopts the SANISAND constitutive model platform and uses a fundamental ingredient of ACST, ... -
Bounding surface plasticity model for the seismic liquefaction analysis of geostructures
Andrianopoulos, K. I.; Papadimitriou, A. G.; Bouckovalas, G. D. (2010)This paper presents the constitutive relations and the simulative potential of a new plasticity model developed mainly for the seismic liquefaction analysis of geostructures. The model incorporates the framework of critical ... -
Effect of yield surface shape on the simulated elasto-plastic response of cohesive soils
Papadimitriou, A. G.; Vranna, A. D.; Dafalias, Y. F.; Manzari, M. T. (2010)This paper presents a discussion on the effect of the selected yield surface shape on the simulated drained and undrained response of cohesive soils. The discussion is made possible by sequentially implementing two different ... -
Explicit integration of bounding surface model for the analysis of earthquake soil liquefaction
Andrianopoulos, K. I.; Papadimitriou, A. G.; Bouckovalas, G. D. (2010)This paper presents a new plasticity model developed for the simulation of monotonic and cyclic loading of non-cohesive soils and its implementation to the commercial finite-difference code FLAC, using its User-Defined-Model ... -
FLIQ: Experimental verification of shallow foundation performance under earthquake-induced liquefaction
Bouckovalas, G. D.; Karamitros, D. K.; Madabhushi, G. S. P.; Cilingir, U.; Papadimitriou, A. G.; Haigh, S. K. (2015) -
A geographical information system managing geotechnical data for Athens (Greece) and its use for automated seismic microzonation
Antoniou, A. A.; Papadimitriou, A. G.; Tsiambaos, G. (2008)This article presents a geographical information system (GIS) which manages geotechnical data obtained from detailed geotechnical surveys as well as from in situ observations in Athens, Greece. Thoroughly examined data ... -
Insight into the seismic response of earth dams with an emphasis on seismic coefficient estimation
Andrianopoulos, K. I.; Papadimitriou, A. G.; Bouckovalas, G. D.; Karamitros, D. K. (2014)This paper presents a numerical investigation of the seismic response of earth dams by employing results from 110 nonlinear two-dimensional (2D) dynamic analyses of four different cross-sections with heights ranging from ... -
Methodology for automated GIS-aided seismic microzonation studies
Papadimitriou, A. G.; Antoniou, A. A.; Bouckovalas, G. D.; Marinos, P. G. (2008)This paper presents an automated methodology for performing geographic information system (GIS)-aided seismic microzonation studies. It presupposes the existence of a geotechnical database containing data from sampling ... -
Methodology for estimating seismic coefficients for performance-based design of earthdams and tall embankments
Papadimitriou, A. G.; Bouckovalas, G. D.; Andrianopoulos, K. I. (2014)Following an overview of pertinent literature, this paper presents a new methodology for estimating seismic coefficients for the performance-based design of earth dams and tall embankments. The methodology is based on ... -
Parametric investigation of lateral spreading of gently sloping liquefied ground
Valsamis, A. I.; Bouckovalas, G. D.; Papadimitriou, A. G. (2010)This paper investigates the main parameters affecting the anticipated maximum surface displacements due to earthquake-induced lateral spreading of mildly sloping ground. The main tool used for this purpose is a numerical ... -
Phenomenological simulation of the seismic response of ground stabilized with colloidal silica
Papadimitriou, A. G.; Agapoulaki, G. I.; Andrianopoulos, K. I. (2014)Passive stabilization is a novel technique for mitigating the risk of seismic liquefaction in the non-cohesive foundation soil of existing structures. It entails the low-gradient injection of colloidal silica in the soil ... -
Sand fabric evolution effects on drain design for liquefaction mitigation
Bouckovalas, G. D.; Papadimitriou, A. G.; Niarchos, D. G.; Tsiapas, Y. T. (2011)This paper revisits the seminal work of Seed and Booker (1977) [21] on the design of infinitely permeable drains for liquefaction mitigation. It is shown that their basic mathematical assumption for the rate of earthquake-induced ... -
Sand model within anisotropic critical state theory with evolving fabric
Papadimitriou, A. G.; Dafalias, Y. F.; Li, X. S. (2015)This paper presents a simple anisotropic sand model within a recently proposed Anisotropic Critical State Theory (ACST), which was motivated by grain level kinematics studied by means of DEM. The model adopts the SANISAND ... -
SANICLAY: A new simple anisotropic clay plasticity model
Papadimitriou, A. G.; Dafalias, Y. F.; Manzari, M. T. (2007)SANICLAY is a new simple anisotropic clay plasticity model that builds on a modification of an earlier model with an associated flow rule, in order to include simulations of softening response under undrained compression ... -
Simplified methodology for estimating seismic coefficients for the pseudo-static slope stability analysis of earth dams
Papadimitriou, A. G.; Andrianopoulos, K. I.; Bouckovalas, G. D.; Anastasopoulos, K. (2011)This paper presents a simplified methodology for the estimation of seismic coefficients for pseudo-static slope stability analysis of earth dams and tall embankments. This methodology is based on a statistical analysis of ...