Numerical Methods in Geotechnical Engineering IX: Proceedings of the 9th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2018), June 25-27, 2018, Porto, Portugal

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Numerical Methods in Geotechnical Engineering IX contains 204 technical and scientific papers presented at the 9th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2018, Porto, Portugal, 25―27 June 2018). The papers cover a wide range of topics in the field of computational geotechnics, providing an overview of recent developments on scientific achievements, innovations and engineering applications related to or employing numerical methods. They deal with subjects from emerging research to engineering practice, and are grouped under the following themes: Constitutive modelling and numerical implementation Finite element, discrete element and other numerical methods. Coupling of diverse methods Reliability and probability analysis Large deformation – large strain analysis Artificial intelligence and neural networks Ground flow, thermal and coupled analysis Earthquake engineering, soil dynamics and soil-structure interactions Rock mechanics Application of numerical methods in the context of the Eurocodes Shallow and deep foundations Slopes and cuts Supported excavations and retaining walls Embankments and dams Tunnels and caverns (and pipelines) Ground improvement and reinforcement Offshore geotechnical engineering Propagation of vibrations Following the objectives of previous eight thematic conferences, (1986 Stuttgart, Germany; 1990 Santander, Spain; 1994 Manchester, United Kingdom; 1998 Udine, Italy; 2002 Paris, France; 2006 Graz, Austria; 2010 Trondheim, Norway; 2014 Delft, The Netherlands), Numerical Methods in Geotechnical Engineering IX updates the state-of-the-art regarding the application of numerical methods in geotechnics, both in a scientific perspective and in what concerns its application for solving practical boundary value problems. The book will be much of interest to engineers, academics and professionals involved or interested in Geotechnical Engineering. Cover Half Title Title Page Copyright Page Table of Contents Preface Committees Institutional support Sponsors VOLUME 1 Keynote lectures Numerical modelling of coupled thermo-hydro-mechanical problems: Challenges and pitfalls Rock failure analysis with discrete elements Constitutive modelling and numerical implementation The dilatancy conditions at critical state and its implications on constitutive modelling An innovative FE approach using soil hyperbolic model for predicting the response of monopiles supporting OWTs in sands Numerical modeling of the creep behavior of a stabilized soft soil On the use of NURBS plasticity for geomaterials Numerical simulation of the behavior of collapsible loess The influence of non-coaxial plasticity in numerical modelling of soil-pipe interaction Hypoplastic model and inverse analysis for simulation of triaxial tests Application of a generalized continuous Mohr–Coulomb criterion Enhanced plasticity modelling of high-cyclic ratcheting and pore pressure accumulation in sands A generalized plasticity model adapted for shearing interface problems Comparative investigation of constitutive models for shotcrete based on numerical simulations of deep tunnel advance On modelling of anisotropic undrained strength for non-horizontal terrain Elastic and plastic anisotropy in soft clays: A constitutive model Fe-analysis of anchor pull out tests using advanced constitutive models On the convexity of yield and potential surfaces in rotational hardening critical state models On constitutive modelling of anisotropic viscous and non-viscous soft soils Measurement and analysis of ground contacts during rockfall events The role of evolutionary algorithms in soil constitutive models Estimation and calibration of input parameters for Lake Texcoco Clays, Mexico City A comparison of the series and parallel Masing-Iwan model in 2D Effective stress based model for natural soft clays incorporating restructuration Interpretation of the cyclic behaviour of a saturated dense sand within an elasto-plastic framework Numerical implementation of hardening soil model A hypoplastic model for soft clays incorporating strength anisotropy A modified bounding surface plasticity model for sand Evaluating the effects of noise on full field displacement data used for the identification of soil stress-strain response Analysis of the bearing capacity of strip footing on crushable soil Numerical simulations of the dynamic soil behaviour in true triaxial conditions The role of soil fabric anisotropy for reaching and maintaining critical state A method to consider the electrical/chemical interaction of clay crystal in general constitutive model Extended bounding surface model for general stress paths in practical applications A time dependent constitutive model for soft clay based on nonstationary flow surface theory Simple constitutive models to represent the effect of mechanical damage and abrasion on the short-term load-strain response of geosynthetics Modelling the small strain behaviour of a cemented silty sand with bounding plasticity Incorporation of creep into an elasto-plastic soil model for time-dependent analysis of a high rockfill dam Numerical simulation of a SHTB system for a constant-resistance large-deformation bolt SHANSEP approach for slope stability assessments of river dikes in The Netherlands Incorporating the state parameter into a simple constitutive model for sand Governing parameter method for numerical integration of constitutive models for clays Finite element, discrete element and other numerical methods. Coupling of diverse methods DEM simulation of the mechanism of particle dissolution on the behavior of collapsible soils Modelling soil-water interaction with the material point method. Evaluation of single-point and double-point formulations Non-Euclidian discrete geometric modeling of granular soils Numerical investigations on the liquid-solid transition of a soil bed with coupled CFD-DEM Free vibration analysis of piled raft foundation by FE-BE coupling method An iterative sequential Monte Carlo filter for Bayesian calibration of DEM models Particle-based modelling of cortical meshes for soil retaining applications Usability of piezocone test for finite element modelling of long-term deformations in soft soils Study of the validity of a rectangular strip track/soil coupling in railway semi-analytical prediction models DEM modelling of dynamic penetration in granular material A methodology for the 3D analysis of foundations for marine structures Axisymmetric formulation of the material point method for geotechnical engineering applications Finite element modeling of innovative energy geo-structure behaviour Effects of sandy soils permeability variation on the pore pressure accumulation due to cyclic and dynamic loading Numerical study of pile setup for displacement piles in cohesive soils A relook into numerical simulations of the pressuremeter test for the calibration of advanced soil models Direct infinite element for soil structure interaction in time domain A robust numerical technique for analysis of coupled problems in elasto-plastic porous media Soil-structure interaction in coupled models Reliability and probability analysis Impact of considering oriented rock variability on tunnel excavation Conditional random field simulation for analysis of deep excavations in soft soils Stability assessment of the unsaturated slope under rainfall condition considering random rainfall patterns Numerical evaluation of fragility curves for earthquake liquefaction induced settlements of a levee using Gaussian Processes Reliability analysis of constant total stress foundations subjected to water table fluctuations A practical case study of slope stability analysis using the random finite element method Modes of improbable slope failure in spatially variable cohesive soils 3D slope stability analysis with spatially variable and cross-correlated shear strength parameters Variability in offshore soils and effects on probabilistic bearing capacity Stochastic study of stability of unsaturated heterogeneous slopes destabilised by rainfall Large deformation—large strain analysis Optimizing the MPM model of a reduced scale granular flow by inverse analysis Modelling rockfall dynamics using (convex) non-smooth mechanics On the use of the material point method to model problems involving large rotational deformation Issues with the material point method for geotechnical modelling, and how to address them LDFEM analysis of FDP auger installation in cohesive soil Large deformation finite element analyses for the assessment of CPT behaviour at shallow depths in NC and OC sands Pipe-seabed interaction under lateral motion Validation of Coupled Eulerian-Lagrangian (CEL) method by means of large scale foundation testing A coupled constitutive model for modelling small strain behaviour of soils Three-dimensional analysis of penetration problems using G-PFEM The use of MPM to estimate the behaviour of rigid structures during landslides Assessment of dike safety within the framework of large deformation analysis with the material point method Numerical simulation of pile installation in saturated soil using CPDI Multi-material arbitrary Lagrangian-Eulerian and coupled Eulerian-Lagrangian methods for large deformation geotechnical problems Artificial intelligence and neural networks Use of artificial neural networks to analyse tunnelling-induced ground movements obtained from geotechnical centrifuge testing Construction of bedrock topography from airborne-EM data by artificial neural network Artificial neural networks in the analysis of compressibility of marine clays of Grande Vitória, ES, Brazil Rock and soil cutting slopes stability condition identification based on soft computing algorithms Estimating spatial correlations from CPT data using neural networks and random fields Human-driven machine-automation of engineering research Ground flow, thermal and coupled analysis Heat transfer process in a thermo-active diaphragm wall from monitoring data and numerical modelling Stress dependency of the thermal conductivity of a regular arrangement of spheres in a vacuum Factors affecting the thermo-mechanical response of a retaining wall under non-isothermal conditions Energy efficiency evaluation in thermoactive geostuctures: A case study Hydro-mechanical modelling of an unsaturated seal structure Finite element modelling of excess pore fluid pressure around a heat source buried in saturated soils Numerical investigation of the effects of thermal loading on the mechanical behaviour of energy piles in sand Finite-element modelling of thermo-mechanical soil-structure interaction in a thermo-active cement column buried in London Clay Earthquake engineering, soil dynamics and soil-structure interaction Numerical noise effects and filtering in liquefiable site response analyses Influence of water table fluctuation on soil-structure interaction Numerical simulation on the ground response in saturated sand Simulating the seismic response of laterally spreading ground after its passive stabilization against liquefaction Artificial neural networks for the evaluation of impedance functions of inclined pile groups 3-D source-to-site numerical investigation on the earthquake ground motion coherency in heterogeneous soil deposits Analysis of observed liquefaction during the 2016 Kumamoto earthquake Potential mechanism for recurrent mid-span failure of pile supported river bridges in liquefied soil Effect of earthquake characteristics on permanent displacement of a cantilever retaining wall Rock mechanics Arching of granular flow under loading in silos Boundary stress distribution in silos filled with granular material Numerical simulation of the advance of a deep tunnel using a damage plasticity model for rock mass Experimental validation of numerical rockfall trajectory models Providing perfect numerical simulations of flexible rockfall protection systems Time-lapse crosshole seismic tomography for characterisation and treatment evaluation of the Ribeiradio dam rock mass foundation Opening effect on mechanical behaviour of rock brick Author index VOLUME 2 Application of numerical methods in the context of the Eurocodes Ultimate limit state design of retaining wall using finite element method and advanced soil models Numerical analysis of a foundation of a cooling tower in difficult geotechnical conditions Consideration of numerical methods in next generation Eurocode 7 (EN 1997)—current state of the amendment Shallow and deep foundations Analysis of piled foundations partially embedded in rock The bearing capacity of shallow foundations on slopes The failure mechanism of pile foundations in non-cohesive soils Long-term settlements induced by a large mat foundation Design simulation of deformations during short-term loading of soft clay An elastoplastic 1D Winkler model for suction caisson foundations under combined loading Analysis of friction piles in consolidating soils Soil-foundation contact models in finite element analysis of tunnelling-induced building damage Finite element modelling of extent of failure zone in c-ø soil at the cutting edge of open caisson Numerical 3D analysis of masonry arch bridge cracks using jointed rock model Finite element analysis of soft boundary effects on the behav Development of load-transfer curves for axially-loaded piles using fibre-optic strain data, finite element analysis and optimisation Numerical analysis of concrete piles driving in saturated dense and loose sand deposits Slopes and cuts MPM modelling of static liquefaction in reduced-scale slope Thermomechanical modelling of rock avalanches with debris, ice and snow entrainment Effect of failure criterion on slope stability analysis 2D and 3D rock slope stability analysis in an open-pit mine Increased efficiency of finite element slope stability analysis by critical failure path detection Stabilisation of excavated slopes with piles in soils with distinctly different strain softening behaviour Groundwater flow modelling for the design of a dry dock Influence of periodical rainfall on shallow slope failures based on finite element analysis Slope instabilities triggered by creep induced strength degradation Supported excavations and retaining walls Numerical analyses of a pile wall at the toe of a natural slope Inverse analysis of horizontal coefficient of subgrade reaction modulus for embedded retaining structures Performance based design for propped excavation support systems in Qom, Iran Three-dimensional effects of nail arrangement on soil-nailed convex corners Design of anchored sheet pile walls in cohesionless soil Back-analysis of Crossrail deep excavations using 3D FE modelling—development of BRICK parameters for London Clay Numerical analysis of an unsymmetrical railcar unloading pit and connection trench Numerical analysis of a tied-back wall in saturated cohesive soils A parametric study of efficiency of buttress walls in reducing the excavation-induced tunnel movement Soil parameter identification for excavations: A falsification approach Numerically derived P-Y curves for rigid walls under active conditions Two dimensional upper and lower-bound numerical analysis of the basal stability of deep excavations in clay A method to consider the nonlinear behaviour of reinforced concrete in flexible earth-retaining walls: Preliminary results Embankments and dams A simplified finite element implementation of the Sellmeijer model for backward erosion piping Modelling a sand boil reactivation in the middle-lower portion of the Po river banks Finite element analysis of the monitored long-term settlement behaviour of Kouris earth dam in Cyprus Hydromechanical analysis of gravity dam foundations 3D coupled hydromechanical analysis of dam foundations An in-house VBA program to model the settlement and consolidation of thickened mine tailings Deep foundations and ground improvement for the slope stability of the Disueri dam (Italy) Discrete element modelling of the failure mechanisms of Foz Tua arch dam foundation Tunnels and caverns (and pipelines) Linear models for the evaluation of the response of beams and frames to tunnelling Numerical modelling within a risk assessment process for excavations over a brick arch tunnel at Earls Court, London Numerical modelling strategy to accurately assess lining stresses in mechanized tunneling Tunnelling induced settlements—finite element predictions, soil model complexity and the empirical inverse Gaussian settlement curve Stress redistribution in the central pillar between twin tunnels Numerical analysis of interaction behavior of yielding supports in squeezing ground A practical tool for the preliminary estimation of stability of underground quarries excavated in jointed chalk layers of North France Numerical analysis of old masonry vaults of the Paris subway tunnels Investigation of the response of bored tunnels to seismic fault movement Numerical study on water-jet cutting technique applied in underground coal mines Ground improvement and reinforcement A new method for finite element modelling of prefabricated vertical drains Finite element modelling of reinforced road pavements with geogrids Optimal design of reinforced slopes Simulation of a jet injection into an elastic perfectly-plastic soil using uGIMP Numerical modelling of limit load increase due to shear band enhancement Finite element modelling of rigid inclusion ground improvement Stone column-supported embankments on soft soils: Three-dimensional analysis through the finite element method Three-dimensional parametric study of stone column-supported embankments on soft soils Finite element analysis of performance of bearing reinforcement earth wall Numerical studies on the influence of column reinforcements with soil-binders on railway tracks Finite element analysis of soil-structure interaction in soil anchor pull-out tests The effect of non-linear soil behavior on mixed traffic railway lines Offshore geotechnical engineering The dynamics of an offshore wind turbine using a FE semi-analytical analysis considering the interaction with three soil profile Numerical method for evaluation of excess pore pressure build-up at cyclically loaded offshore foundations Stiffness of monopile foundations under un- and reloading conditions 3D FE dynamic modelling of offshore wind turbines in sand: Natural frequency evolution in the pre-to after-storm transition Multiscale investigations on the failure mechanism of submarine sand slopes with coupled CFD-DEM One-dimensional finite element analysis of the soil plug in open-ended piles under axial load Spudcan installation and post installation behaviour in soft clay: The press-replace method Behaviour of laterally loaded pile Modelling of the lateral loading of bucket foundations in sand using hydro-mechanical interface elements Effect of scour on the behavior of a combined loaded monopile in sand Nonlinear finite-element analysis of soil-pipe interaction for laterally-loaded buried offshore pipelines Development and validation of a numerically derived scheme to assess the cyclic performance of offshore monopile foundations Propagation of vibrations and mitigation measures Dynamic soil excitation from railway tunnels Efficient finite-element analysis of the influence of structural modifications on traffic-induced building vibrations Assessment of measures to mitigate traffic induced vibrations by means of advanced validated 3D-Finite Element Analyses Experimental validation of a 3D FEM numerical model for railway vibrations Probabilistic assessment of ground-vibration transfer in layered soil Determining the railway critical speed by using static FEM calculations Stress path evolution in the ground due to railway traffic. Comparison between ballasted and ballastless track systems Geotechnical challenges in very high speed railway tracks. The numerical modelling of critical speed issues Numerical modelling of vibration mitigation due to subway railway traffic Mitigation of vibration induced by railway traffic through soil buried inclusions: A numerical study Author index