John S. McCartney
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View article: Analytical Solution for One‐Dimensional Steady‐ and Transient‐State Flow in Vertical Heterogeneous Unsaturated Soils
Analytical Solution for One‐Dimensional Steady‐ and Transient‐State Flow in Vertical Heterogeneous Unsaturated Soils Open
Exact solutions for one‐dimensional steady‐state and transient liquid flow toward a water table in heterogeneous unsaturated soils are critical in predicting saturation profiles in several real‐world applications including interpretation o…
View article: Out of the Past: An AI-Enabled Pipeline for Traffic Simulation from Noisy, Multimodal Detector Data and Stakeholder Feedback
Out of the Past: An AI-Enabled Pipeline for Traffic Simulation from Noisy, Multimodal Detector Data and Stakeholder Feedback Open
How can a traffic simulation be designed to faithfully reflect real-world traffic conditions? One crucial step is modeling the volume of traffic demand. But past demand modeling approaches have relied on unrealistic or suboptimal heuristic…
View article: Multi-degree of freedom shake table testing of large-scale structural and geotechnical systems with NHERI-UCSD LHPOST6
Multi-degree of freedom shake table testing of large-scale structural and geotechnical systems with NHERI-UCSD LHPOST6 Open
This paper focuses on the abilities of the Large High-Performance Outdoor Shake Table (LHPOST6) at UC San Diego to investigate the combined effects of realistic near-field translational and rotational earthquake ground motions applied as d…
View article: Augmented intelligence framework for real-time ground assessment under significant uncertainty
Augmented intelligence framework for real-time ground assessment under significant uncertainty Open
Real-time assessment of unsaturated soils through deflection tests is challenging due to the complex effects of water and air in soil pores, which significantly impact test outcomes but are difficult to quantify, especially when key data l…
View article: Parameters in play: AlphaZero-Inspired AI for autonomous parameter identification in soil constitutive and finite element models
Parameters in play: AlphaZero-Inspired AI for autonomous parameter identification in soil constitutive and finite element models Open
In geotechnical engineering, the precise identification of essential soil parameters from sensing and experimental data is vital for the accuracy of constitutive and finite element models. However, the complexity of sophisticated soil mode…
View article: A new multi-surface plasticity model for cyclic hardening of unsaturated granular soils
A new multi-surface plasticity model for cyclic hardening of unsaturated granular soils Open
This paper proposes a new multi-surface plasticity model for the cyclic hardening of unsaturated granular soils crucial for assessing their resilience jointly under repeated loading and changing climatic conditions. The model incorporates …
View article: Temperature effects on adsorption and capillarity water retention mechanisms in constrained unsaturated soils
Temperature effects on adsorption and capillarity water retention mechanisms in constrained unsaturated soils Open
This paper focuses on the impact of elevated temperatures on the adsorptive and capillarity water retention mechanisms of unsaturated soils under constrained (constant volume) conditions. This topic is critical for simulating the thermo-hy…
View article: Hyperbolic hydro-mechanical model for seismic compression of unsaturated sands in the funicular regime
Hyperbolic hydro-mechanical model for seismic compression of unsaturated sands in the funicular regime Open
A semi-empirical model with a hyperbolic shear stress–strain curve was developed to predict the seismic compression of unsaturated sands in the funicular regime during undrained cyclic shearing. Plastic volumetric strains obtained from hyp…
View article: Rocking foundations on geosynthetic-improved sand
Rocking foundations on geosynthetic-improved sand Open
This study focuses on the load-deformation response of a heavily loaded rocking footing on geogrid-reinforced sand via centrifuge-model scale shake table tests. To mitigate issues observed with overturning failure and excessive settlement …
View article: Full-scale seismic response test on a shallow foundation embedded in tire-derived aggregate for geotechnical seismic isolation
Full-scale seismic response test on a shallow foundation embedded in tire-derived aggregate for geotechnical seismic isolation Open
This paper presents results from full-scale tests aimed at characterizing the seismic response of shallow foundations embedded in tire derived aggregate (TDA) with large particle size. The high shear strength, low shear modulus, and high d…
View article: Free swelling behavior of MX80 bentonite under elevated temperatures up to 200 °C
Free swelling behavior of MX80 bentonite under elevated temperatures up to 200 °C Open
This paper focuses on understanding trends in the swelling potential of MX80 bentonite under temperatures up to 200 °C using a high-pressure cell. The free swelling behavior of expansive clays under high temperature and high fluid pressure…
View article: Transient temperature and water distributions in compacted MX80 bentonite under high temperature gradients
Transient temperature and water distributions in compacted MX80 bentonite under high temperature gradients Open
Numerous element-scale and full-scale tests have been carried out on compacted bentonite to investigate its coupled thermo-hydro-mechanical (THM) behavior when used as a buffer material in high-level nuclear waste geological repositories, …
View article: Data-Driven Modeling of an Unsaturated Bentonite Buffer Model Test Under High Temperatures Using an Enhanced Axisymmetric Reproducing Kernel Particle Method
Data-Driven Modeling of an Unsaturated Bentonite Buffer Model Test Under High Temperatures Using an Enhanced Axisymmetric Reproducing Kernel Particle Method Open
In deep geological repositories for high level nuclear waste with close canister spacings, bentonite buffers can experience temperatures higher than 100 °C. In this range of extreme temperatures, phenomenological constitutive laws face lim…
View article: Mechanically Stabilized Tire Derived Aggregate (MSTDA) retaining walls
Mechanically Stabilized Tire Derived Aggregate (MSTDA) retaining walls Open
Waste tires have been used in a variety of forms in civil engineering applications as a lightweight fill, insulation layer, or drainage layer. This approach to recycling and reusing waste tires has significant environmental benefits over o…
View article: Insights into the thermo-hydraulic properties of compacted MX80 bentonite during hydration under elevated temperature
Insights into the thermo-hydraulic properties of compacted MX80 bentonite during hydration under elevated temperature Open
In high-level radioactive waste geological repositories, compacted bentonite undergoes coupled thermo-hydraulic processes due to heat released from a central waste canister and groundwater imbibition from the surrounding host rock. An unde…
View article: Improved Thermal Conductivity Function for Unsaturated Soil with Physics-based Parameters
Improved Thermal Conductivity Function for Unsaturated Soil with Physics-based Parameters Open
This paper proposes a new relationship between thermal conductivity and degree of saturation of unsaturated soils, referred to as the thermal conductivity function (TCF). The new sigmoidal relationship between thermal conductivity and degr…
View article: Modeling seismic compression of unsaturated soils in the funicular regime
Modeling seismic compression of unsaturated soils in the funicular regime Open
A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC…
View article: Hyperbolic Hydro-mechanical Model for Seismic Compression Prediction of Unsaturated Soils in the Funicular Regime
Hyperbolic Hydro-mechanical Model for Seismic Compression Prediction of Unsaturated Soils in the Funicular Regime Open
A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC…