Any design methodology, be it RBD or otherwise, should place site investigation as the cornerstone of the methodology.
The experimental data from a soil database is partitioned into two groups for fitting and verification of the proposed method.
From the verification results, it can be seen that the proposed method provides significantly better estimation of SWCC for the granular soils with different initial dry densities than the Fredlund and Xing equation.
Two main activities in this direction are highlighted below.
Site investigation and the interpretation of site data are necessary aspects of sound geotechnical practice.
This paper presents a new estimation model to consider the effect of initial dry density on the soil–water characteristic curve (SWCC) of granular soils.
The proposed method is based on the Fredlund and Xing equation without increasing the number of adjustable parameters.Results show that the more inaccurate the input parameters are, the more uncertain the quality of the estimated model prediction becomes.With increasing model uncertainty, the quality of the model also decreases.Deterministic Analysis of Consolidation Problem in Natural Alluvial Deposits -- Bearing Capacity of Strip Footings on Spatially Random Soils Using Sparse Polynomial Chaos Expansion -- Spatial Variability of Aperture in a Rough-Walled Crack in Surface Soil -- Parameter Estimation and Uncertainty Analysis Incorporating Engineering Judgement by Bayesian Inversion -- Site Response Effects on Partially Ergodic PSHA -- A Case Study of Alternative Site Response Explanatory Variables in Parkfield, California -- Estimating Repair Cost and Downtime Due to Earthquake-Induced Damage at Container Ports -- Effect of Fabric Anisotropy on Seismic Response of Strip Foundations -- Seismic Response of Reinforced Soil Retaining Walls : Is PGA-Based Design Adequate?-- Performance Based Assessment of Dynamic Soil-Structure Interaction Effects on Seismic Response of Building Frames -- Effects of Slenderness Ratio on Seismic Behavior of Vertical Micropiles -- Multichannel Analysis of Surface Waves (MASW) at the National Geotechnical Engineering Site at Texas A & M University (NGES/TAMU) -- Probabilistic Compressible Soil Thickness from Field Settlement Data -- A Novel Application of Risk Analysis Methods to Evaluate the Future Viability of Two Large Concrete Stormwater Detention Tanks -- Risk Management for Large-Scale Foundation Design and Construction in Challenging Karst Geology -- Effect of Spatial Variability and Model Uncertainty on the Design of Sockets in Weak Carbonate Rocks -- CPT-Based Probabilistic Characterization of Effective Friction Angle of Sand -- Prediction of Embankment Settlement from PCPT Measurements : A Case Study at Courtableau Bridge -- Geochemical and Geotechnical Features of Terra Rossa in Karst Areas of Southern Appalachians -- Characterizing Spatial Variability of Cone Penetration Testing through Geostatistical Evaluation -- Case Study A Landslide on Coastal Slope in Bellingham Bay -- Developing Resistance Factors for Design of Piles in Sand -- Probabilistic Slope Stability Analysis of a 300 m High Embankment Dam -- Identification of Hazardous Loose Landslide Deposits and Scars Formed during the 2008 Wenchuan Earthquake -- Bounding the Probability of Failure for Levee Systems -- Breaching of Changkai Levee in June 2010 in Jiangxi Province, China -- Distinct Element Modelling for High Rock Slopes in Static and Dynamic Conditions : A Case Study -- Reliability Analysis of Stone Columns for Ground Improvement -- Application of SCPTU for Assessing Liquefaction Potential of the 1976 Tangshan Earthquake, China -- Characterizing the Liquefaction Potential of the Pleistocene-Age Wando Formation in the Charleston Area, South Carolina -- Influence of rd on Liquefaction Triggering Evaluation at Two Case History Sites -- Evaluating Bias of Liquefaction-Induced Settlement Methods for Performance-Based Design -- Estimating CSRs for Evaluating Liquefaction That Are Consistent with Building Code Design Spectra -- Potential Differences between Time Series and Random Vibration Theory Site Response -- Understanding Uncertainty : Assessment and Management of Geotechnical Risk in Tunnel Construction -- Communicating and Managing Risk in Geotechnical Engineering Practice -- Reliability Analysis of Deep Excavation Based on a Semi-Empirical Approach -- Jet-Grouting in Cohesive Soils for Ground Improvement in Hawaii -- Risk Assessment of Success Dam, California : Evaluation of Operating Restrictions as an Interim Measure to Mitigate Earthquake Risk -- Some Observations on Reliability-Based Design of Rock Footings -- A Practical LRFD Design Method for Deep Foundations Using Side Friction and End Bearing -- Reliability-Based Design of Shallow Foundations in Cohesionless Soils under Compression Loading : Serviceability Limit State -- Quantile Framework for Simplified Geotechnical Reliability-Based Design -- Reliability Assessment of Eurocode 7 Spread Foundations Design Methodology -- Deterministic and Probabilistic Seismic Analyses of a Slope-Footing System -- A Comparative Study of Drilled Shaft Design Using LRFD and Expanded RBD -- Limit States Design of Pile Foundations in Clay under Combined Action of Transient Uplift Loads and Frost Jacking -- Safety Margin in Design of Pile-Supported Structural Slabs for Frost Action -- Statistical Characterization and Stochastic Simulation of Load-Displacement Behavior of Shallow Footings -- Reliability Based Design of Base Heave Stability in Wide Excavations -- Probabilistic Analysis of Shallow Foundations on Rocks Obeying Hoek-Brown Failure Criterion.Kok-Kwang Phoon, Ph D, PEng, FSEng, FIES, FASCE is Distinguished Professor and Vice Provost (Academic Personnel) at the National University of Singapore.