Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics

Name: Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics
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Lin Li Bora Cetin Xiaoming Yang(Editor)

Springer (Publisher)

1st Edition

Published on 10. May 2018

XXI, 493 pages

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978-981-13-0122-3 (ISBN)

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Content

Intro
Preface
Organization
International Advisory Committee
Conference Steering Committee
Technical Committee
Organizing Committee
Local Organizing Committee
Contents
About the Editors
Tensile Strains in Geomembrane Landfill Liners
Abstract
1 Introduction
2 GMB Tensile Strains from Indentations
2.1 GMB Indentations and Laboratory Testing Methods
2.2 Strain Calculation Methods
2.3 Influence of Gravel Size on Maximum GMB Tensile Strain
2.4 Influence of Geotextile Protection on Maximum GMB Tensile Strain
2.5 Influence of Alternative Protection Layers on Maximum GMB Tensile Strain
2.6 Influence of Time and Temperature on Maximum GMB Tensile Strain
3 GMB Tensile Strains on Side Slope
3.1 GMB Tears on Side Slope
3.2 Numerical Modelling
3.3 Centrifuge Testing
3.4 Influence of Slope Inclination on GMB Tensile Strains
4 Conclusions
Acknowledgements
References
Ground Improvement
Application of Image Analysis on Two-Dimensional Experiment of Ground Displacement Under Strip Footing
Abstract
1 Introduction
2 Experimental Method
2.1 Experimental Setup of 2D Ground Failure Under Strip Footing
2.2 Image Analysis for Measurement of Ground Displacement
3 Result and Discussion
3.1 Comparison Between DIC and the Image Analyzing Method
3.2 Displacement Measurement of the Highlighted Markers
4 Concluding Summary
References
Calculation Method for Settlement of Stiffened Deep Mixed Column-Supported Embankment over Soft Clay
Abstract
1 Introduction
2 Calculation Model
3 Derivation of the Theoretical Method
3.1 Compression of Soil in Region I
3.2 Compression of Soil in Region II
3.3 Compression of Soil in Region III
4 Application of the Proposed Method
5 Conclusions
Acknowledgments
References
Consolidation Analysis of Soft Soil by Vacuum Preloading Considering Groundwater Table Change
Abstract
1 Introduction
2 Analysis on Field Observation
3 Calculation Model
3.1 Basic Assumptions
3.2 Governing Equation
4 Analytical Solution
5 Analysis of Influence Factors
5.1 Effects of Drain Spacing Ratio n
5.2 Effects of Groundwater Table Change
5.3 Effects of Soil Permeability Coefficient Ratio
6 Conclusions
Acknowledgements
References
DEM Analysis of the Effect of Grain Size Distribution on Vibroflotation Without Backfill
Abstract
1 Introduction
2 DEM Simulations
2.1 Contact Model
2.2 Simulation Conditions
2.3 The Process of Vibroflotation
3 Simulation Results
3.1 The Distribution of Void Ratio
3.2 The Particle Velocity Field
4 Conclusions
Acknowledgement
References
Steel Drilled Displacement Piles (M-Piles) - Overview and Case History
Abstract
1 Introduction
2 Generalized Construction Procedure
3 Applicability and Installation-Induced Changes
4 Benefits and Advantages
5 Case History - P-730 Bachelors Enlisted Quarters Project
6 Conclusions
References
Field Investigation of Highway Subgrade Silty Soil Treated with Lignin
Abstract
1 Introduction
2 Field Tests
2.1 Site Description
2.2 Materials and Methods
3 Results and Discussion
3.1 CBR Test
3.2 Resilient Modulus Test
3.3 Benkelman Beam Test
3.4 Heavy Metal Concentration
4 Conclusions
References
Investigation of Ground Displacement Induced by Hydraulic Jetting Using Smoothed Particle Hydrodynamics
Abstract
1 Introduction
2 Fundamentals of Smoothed Particle Hydrodynamics (SPH)
2.1 Definition
2.2 SPH Formulation
3 Investigation Methodology
4 Simulation Results and Discussion
5 Conclusion
References
Monte-Carlo Simulation of Post-construction Settlement After Vacuum Consolidation and Design Criterion Calibration
Abstract
1 Introduction
2 Analytical Solution of Vacuum Consolidation Combined with Preloading
3 Reliability-Based Analysis and Design Approach
3.1 Monte-Carlo Simulation Based on Analytical Solution
3.2 Reliability-Based Design Approach
4 Application in Design Review of the Reclamation of Kalibaru Port
4.1 Project Summary
4.2 Deterministic Results by Using FEM
4.3 Reliability-Based Design Calibration
5 Conclusions
References
Numerical Investigation on Slope Stability of Deep Mixed Column-Supported Embankments Over Soft Clay Induced by Strength Reduction and Load Increase
Abstract
1 Introduction
2 Definition of Factor of Safety
3 3-D Finite Element Modeling
3.1 Numerical Model
3.2 Material Properties
4 Results and Discussion
4.1 Lateral Displacements
4.2 Failure Modes
4.3 Slip Surface
4.4 Factor of Safety
5 Conclusions
Acknowledgments
References
Performance of Clay Bed with Natural and Lightweight Aggregate Stone Columns
Abstract
1 Introduction
2 Loading Tests on Stone Columns
2.1 Test Materials
2.2 Test Setup and Procedure
2.3 Test Programme
3 Results and Discussion
3.1 Effect of Provision of Stone Columns
3.2 Effect of Encasement to Stone Columns
3.3 Effect of Stone Column Materials on Bearing Capacity
4 Conclusions
Acknowledgement
References
Permeability Comparison of MgO-carboanted Soils and Cement-Treated Soils
Abstract
1 Introduction
2 Materials and Methods
2.1 Materials
2.2 Methods
3 Results and Discussion
4 Conclusions
Acknowledgments
References
Resilient Modulus of Liquid Chemical-Treated Expansive Soils
Abstract
1 Introduction and Background
2 Material Properties
2.1 Standard Compaction Test
3 Specimen Preparation
4 Unconfined Compressive Strength Test
5 Resilient Modulus Test
6 Results and Discussions
7 Conclusions
Acknowledgements
References
Stabilization of Marine Soft Clay with Two Industry By-products
Abstract
1 Introduction
2 Experimental Program
2.1 Marine Soft Clays and Binders
2.2 Sample Preparation and Testing
3 Results and Interpretation
3.1 Unconfined Compressive Strength
3.2 X-Ray Diffraction
3.3 Scanning Electron Microscopy
4 Conclusions
Acknowledgments
References
Study on Strength and Microscopic Properties of Stabilized Silt
Abstract
1 Introduction
2 Test Materials and Scheme
2.1 Test Materials
2.2 Test Scheme
3 Results and Analysis
3.1 Unconfined Compressive Strength Test
3.2 Microscopic Test
4 Conclusion
References
Stabilisation of Expansive Soil Against Alternate Wetting-Drying
Abstract
1 Introduction
2 Materials and Method
2.1 Materials
2.2 Methods
3 Results and Discussion
3.1 Atterberg Limits and Compaction
3.2 Swelling and Shrinkage
4 Conclusions
References
Application of Cone Penetration Test Technology in Whole Process Inspection of Reinforcing Hydraulic Fill Sand Foundation
Abstract
1 Introduction
2 Project Introduction
3 Application of CPT for Reinforcing Hydraulic Fill Sand
3.1 Material Source Surveying in Investigation Stage
3.2 Raising Target Curve in Design Stage
3.2.1 Liquefaction Requirement
3.2.2 Compaction Requirement
3.2.3 Bearing Capacity Requirement
3.2.4 Settlement Requirement
3.3 CPT-SPT Establish Relation Established in Field Trial Stage
3.4 Material Quality Control in Monitoring Stage
3.5 Quality Verification of Reinforcing in Assessment Stage
4 Conclusions
References
Curing of Sand Stabilized with Alkali Lignin
Abstract
1 Introduction
2 Materials
3 Methods and Procedures
4 Test Results and Discussion
5 Conclusions
References
Combined Encased Stone Column and Vacuum Consolidation Technique for Soft Clay Improvement
Abstract
1 Introduction
2 Description of Experiments
2.1 Material Used and Sample Preparation
2.2 Unit Cell Arrangement and Installation Procedure for Encased Stone Column
2.3 Vacuum Preloading
2.4 Surcharge Preloading
3 Results and Discussions
3.1 Time-Settlement Response
3.2 Consolidation Response After Vacuum Treatment
3.3 Improvement in Shear Strength
3.4 Predicted Improvement in Load Carrying Capacity of Stone Columns
4 Conclusions
Acknowledgement
References
Numerical Simulation of Bearing Capacity and Consolidation Characteristics of PHC Pile Foundation
Abstract
1 Ultimate Bearing Capacity of PHC Pile
1.1 Research on Stress and Deformation of Pile and Soil in Static Load Test
1.2 Research on Working Behavior of PHC Pile Under Design Load
2 The Consolidation Characteristics of PHC Pile Foundation
3 Conclusion
References
Experimental Study on Electro-Osmosis Consolidation with Solar Power for Silt
Abstract
1 Introduction
2 Materials and Methods
2.1 Experimental Apparatus and Soil
2.2 Experimental Procedures
3 Results and Discussion
3.1 Electric Current and Voltage
3.2 Water Discharge
3.3 Power Consumption
3.4 Carbon Emission
4 Conclusions
References
Experimental Investigation on Compressive Deformation and Shear Strength Characteristics of Steel Slag in the Geotechnical Engineering
Abstract
1 Introduction
2 Test Materials
3 Experimental Study on Deformation Characteristics of Pure Steel Slag
3.1 Effect of Water Content on Compression Deformation Characteristics of Steel Slag
3.2 Comparison with Compression Moduli of Traditional Soils
4 Direct Shear Tests on Strength Characteristics of Pure Steel Slag
4.1 Test Schemes and Principles
4.2 Shear Strength Characteristics of Steel Slag
5 Conclusions
References
Predicting Compression Index Using Artificial Neural Networks: A Case Study from Dalian Artificial Island
Abstract
1 Introduction
2 Data and Preprocessing
2.1 Case Study and Sample Preparation
2.2 ANN Model
2.3 Preprocessing of Database
3 Result and Discussion
3.1 Results of ANN Model with Nine Parameters as Inputs
3.2 Results of ANN Model with Four or Five Parameters as Inputs
4 Conclusion
Appendix (Weights and Bias of 4-15-1 Tansigmoid-Linear ANN Model)
References
Scale Influence of Treated Zone Under Vacuum Preloading
Abstract
1 Introduction
2 Numerical Simulations on Vacuum Preloading
2.1 Numerical Model and Parameters
2.2 Numerical Results
3 Field Observation of Soil Under Vacuum Preloading
4 Conclusions
References
Research on Laboratory Mixing Trial of Marine Deposit and Cement in Hongkong
Abstract
1 Introduction
2 Insitu Soil Conditions
3 Stabilization Mechanism of Cement and Soil
4 Lab Mixing Trial for Cement and Natural Soil
4.1 Method of Laboratory Mixing
4.2 Adopted Parameters of Laboratory Mixing Trial
4.3 Analysis of Testing Results
5 Conclusion
References
Experimental Investigation of Black Cotton Soil Stabilized with Lime and Coconut Coir
Abstract
1 Introduction
1.1 Need for Soil Stabilization
2 Literature Studies
2.1 Stabilization with Lime
2.2 Stabilization with Coconut Fibers
2.3 Durability Studies
3 Experimental Investigations
3.1 Materials
3.2 Experimental Investigations
3.3 Flexural Fatigue Life
4 Conclusions
References
Influence of Damping Forms on the Behavior of Sand Under Dynamic Compaction
Abstract
1 Introduction
2 Numerical Simulation
2.1 Constitutive Model
2.2 Soil Parameters and Mesh Generation
2.3 Boundary Condition
2.4 Relationship Between Contact Stress and Time
2.5 Numerical Modeling Procedure
3 Results and Analysis
3.1 Crater Depth
3.2 Damping Forms
4 Conclusions
References
Numerical Investigation on the Effect of Saturated Silty Soils Under Multi-location Tamping
Abstract
1 Introduction
2 Coupled Hydro-Mechanical Model for Dynamic Compaction
2.1 Governing Equations of Coupled Hydro-Mechanical Analysis
2.2 Soil Constitutive Law
2.3 Modeling of Impact Load
3 Verifications of the Present Model
3.1 Numerical Model and Material Parameters
3.2 Comparison with Field Data
4 Results and Discussion
4.1 Effect of Tamping Distance
4.2 Effect of Tamping Order
4.3 Effect of the Relative Position Between Tamping Locations
5 Conclusion
References
A Numerical Back Analysis of a Ground Improvement Project on Underconsolidated Clay Under Combined Vacuum and Surcharge Preloading in Macau
Abstract
1 Introduction
2 Soil Profile Description
3 Construction Sequence of the Soil Improvement Project
4 Numerical Modeling
5 Undrained Shear Strength Development
5.1 At the Beginning of Improvement
5.2 At the End of Improvement
6 Conclusion
Acknowledgement
References
Geosynthetics
Application of Large-Size Sandbag Cofferdam in Land Reclamation Engineering
Abstract
1 Introduction
2 Guangdong Cofferdam Project
2.1 Cofferdam Scale and Layout
2.2 Geological Conditions
2.3 Cofferdam Design and Construction
2.4 Stability Analysis
3 Tianjin Cofferdam Project
3.1 Cofferdam Scale and Layout
3.2 Geological Conditions
3.3 Cofferdam Design and Construction
3.4 Stability Analysis
4 Conclusion
References
Centrifuge Model Tests of Basal Reinforcement Effects on Geosynthetic-Reinforced Pile-Supported Embankment
Abstract
1 Introduction
2 Centrifuge Model Test
3 Analysis of Test Results
3.1 Deformation and Stability of Embankment
3.2 Soil Arching Effect and Tensioned Membrane Effect
3.3 Tensile Force of the Geogrid
4 Conclusions
Acknowledgment
References
Comparison Test of Different Drainage in Single Well Model for Vacuum Preloading
Abstract
1 Foreword
2 Test Device
3 Testing Program
3.1 Drainage Parameters
3.2 Test Procedure
4 Soil Performance Comparison Before and After Reinforcement
4.1 Water Content and Wet Density
4.2 Shear Strength and Compressive Strength
5 Conclusion
References
Design Charts for Reinforced Slopes with Turning Corner
Abstract
1 Introduction
2 Mechanism and Formulations
3 Design Charts
4 Illustrative Example
5 Conclusions
References
Experimental Study on Normalized Stress-Strain Behavior of Geogrid Reinforced Rubber Sand Mixtures
Abstract
1 Introduction
2 Materials and Methods
2.1 Test Materials and Mixture Preparation
2.2 Reinforcement Pattern
2.3 Test Procedures
3 Experimental Results
3.1 Stress - Strain Curves and Reinforcement Effect
3.2 The Deformation Modulus of Mixtures
3.3 Normalized Stress-Strain Behavior
4 Conclusions
Acknowledgments
References
Experimental Study of Static Shear Strength of Geomembrane/Geotextile Interface Under High Shear Rate
Abstract
1 Introduction
2 Test Device
3 Materials and Procedures
3.1 Test Materials
3.2 Test Procedures
4 Experimental Results
4.1 Visual Inspection of the Tested Specimens
4.2 Shear Strength of the GM/GT Interface
4.3 Thickness Reduction of Tested Specimens
5 Conclusions
References
Full-Scale Tests on High Narrowed Mechanically Stabilized Roadbed with Wrapped-Around Geogrid Facing
Abstract
1 Introduction
2 Description of the Narrowed Mechanically Stabilized Roadbed
3 Instrumentation Program
4 Results and Discussions
4.1 Tensile Strain of Geogrids
4.2 Earth Pressure Distributions
4.3 Layered Settlement of the Roadbed
4.4 Lateral Deformation of the Roadbed
5 Conclusion Remarks
Acknowledgement
References
Model Test on the Deformation Behavior of Geogrid Supported by Rigid-Flexible Piles Under Static Load
Abstract
1 Introduction
2 Materials and Model Tests
2.1 Materials
2.2 Model Tests
3 Results and Discussion
3.1 The Geogrid Strain
3.2 The Geogrid Deformation Behavior Discussion
4 Conclusions
Acknowledgments
References
Numerical and Experimental Investigation of Tensile Behavior of Geogrids with Circular and Square Apertures
Abstract
1 Introduction
2 Experimental Studies
2.1 Experimental Instrumentations
2.2 Experimental Material
2.3 Experimental Procedure and Program
3 Tests Results and Analysis
4 Numerical Modeling
4.1 Model Consideration
4.2 Model Verification
5 Numerical Results and Analysis
6 Conclusion
Acknowledgments
References
Simplified Approach of Seismic Response Simulation of Geosynthetic Reinforced Slope
Abstract
1 Introduction
2 FoGuang Geosynthetic Reinforced Slope
2.1 Description of the Dynamic Monitoring System Center
2.2 Recorded Data from Field Monitoring Program
3 PLAXIS FEM Analysis
3.1 Introduction of PLAXIS
3.2 Model Description
3.3 Element Node Explanation
4 Simplified Analysis of Seismic Simulation
5 Discussion
Strength Characteristics of Glass Fiber-Reinforced Sand
Abstract
1 Introduction
2 Experimental Program
2.1 Materials
2.2 Sample Preparation and Testing Procedures
3 Test Results and Analysis
3.1 Failure Shapes of the Glass Fiber-Reinforced Sand Specimens
3.2 Maximum Deviatoric Principal Stress - Axial Strain Curves
3.3 Failure Envelopes Characteristics Influenced by Main Controlling Factors
3.4 Strength Parameters
4 Conclusions
Acknowledgement
References
Three-Dimensional Numerical Analysis of Performance of a Geosynthetic-Reinforced Soil Pier
Abstract
1 Introduction
2 Overview of GRS Pier Tests
3 Numerical Modeling
4 Numerical Results
5 Conclusions
Acknowledgements
References
Numerical Simulation Analysis of Geogrid-Reinforced Embankment on Soft Clay
Abstract
1 Introduction
2 Numerical Calculation Model
2.1 Geometric and Constitutive Model
2.2 Calculating Process
3 Analysis of Numerical Results
3.1 Numerical Simulation of Centrifugal Model Test
3.2 Numerical Simulation of Prototype Embankment
4 Conclusion
Acknowledgements
References
Experimental Study on Geocell-Stabilized Unpaved Shoulders
Abstract
1 Introduction
2 Test Material and Setup
2.1 Materials
3 Test Setup
4 Test Results and Discussions
5 Conclusions
Acknowledgments
References
Model Tests on Performance of Embankment Reinforced with Geocell Under Static and Cyclic Loading
Abstract
1 Introduction
2 Experimental Program and Equipment
2.1 Axial Loading System
2.2 Experimental Material and Measurement Equipment
3 Results and Analysis
3.1 Static Loading Test
3.2 Cyclic Loading Test
4 Conclusions
Acknowledgments
References
Comparison Analysis on Behavior of Geosynthetic Reinforcement in Piled Embankments Under Plane Strain and Three-Dimensional Conditions: Numerical Study
Abstract
1 Introduction
2 Numerical Modeling
3 Results and Discussion
3.1 Effect on Efficiency of Geosynthetic Reinforcement
3.2 Effect on Vertical Deflection of Geosynthetic Reinforcement
3.3 Effect on Strain in Geosynthetic Reinforcement
3.4 Conversion Factor of Strain Between 2-D and 3-D Condition
4 Conclusions
Acknowledgements
References
Review of Effects of Poor Gripping Systems in Geosynthetic Shear Strength Testing
Abstract
1 Introduction
2 Large Direct Shear Device
2.1 Specimen Gripping Systems
2.2 Different Gripping Systems Used
3 Effects of Different Gripping Systems
4 Discussion
5 Conclusion
References
Hydraulic Performance of Geosynthetic Clay Liners with Mining Solutions
Abstract
1 Introduction
2 Methodology
2.1 Geosynthetic Clay Liner
2.2 Mining Solution
2.3 Swell Index Test
2.4 Hydraulic Conductivity Test
3 Results and Discussion
3.1 Swell Index
3.2 Hydraulic Conductivity
4 Conclusions
Acknowledgement
References
Numerical Analysis of Different Effects of GCL and Horizontal Drainage Material on Moisture Field of Highway Subgrade
Abstract
1 Introduction
2 Basic Differential Equations and Boundary Conditions for Saturated - Unsaturated Seepage Flow
3 Subgrade Model Establishment and Material Parameters
4 Analysis of Subgrade Moisture Field
5 Conclusions and Discussion
References
DEM Simulation of Pullout Tests of Geogrid-Reinforced Gravelly Sand
Abstract
1 Introduction
2 DEM Modeling
2.1 General
2.2 Backfill and Geogrid
2.3 Model Verification
3 Analysis of Results
4 Conclusions
Acknowledgement
References
Large-Scale Model Analysis on Bearing Characteristics of Geocell-Reinforced Earth Retaining Wall Under Cyclic Dynamic Load
Abstract
1 Introduction
2 Materials and Methods
2.1 Test Device
2.2 Test Material
2.3 Test Loading Scheme
3 Results and Discussions
3.1 Analysis of Earth Pressure Under Dynamic Load
3.2 Acceleration Response of Reinforced Earth Retaining Wall
4 Conclusions
References
Shear Performance of Waste Tires, Geogrid and Geocell Reinforced Soils
Abstract
1 Introduction
2 Test Equipment, Materials and Method
2.1 Test Equipment
2.2 Test Materials
2.3 Test Method
3 Test Results and Analysis
3.1 Test Results
3.2 The Analysis of Reinforcement Mechanism
4 Conclusions
Acknowledgements
References
Performance of Multi-axial Geogrid-Stabilized Unpaved Shoulders Under Cyclic Loading
Abstract
1 Introduction
2 Test Materials and Test Setup
2.1 Materials
2.2 Test Setup
3 Results and Discussion
3.1 Dynamic Cone Penetration Tests
3.2 Vertical Stress
3.3 Permanent Deformation
3.4 Resilient Deformation
4 Conclusions
Acknowledgement
References
A Comparative Study on Shear Strength of Soil Using Geogrid and Geotextiles
Abstract
1 Introduction
2 Experimental Investigations
2.1 Geosynthetics
2.2 Soil Classification
2.3 Tensile Strength Test
2.4 Apparent Opening Size Test
2.5 Large Scale Direct Shear Test
3 Results and Discussions
4 Conclusion
References
Erratum to: Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics
Erratum to: L. Li et al. (Eds.): Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics, https://doi.org/10.1007/978-981-13-0122-3
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Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics

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