Ground Improvement for Coastal Engineering

Description

This practical guide covers the investigation, design, and execution of ground improvement in coastal areas. It explains how to decide whether ground improvement is necessary, which method to choose, and how to design and execute it. Recognising the soft ground commonly found in coastal areas, the book introduces various ground improvement technologies including seismic reinforcement and liquefaction countermeasures and addresses the measures to be taken to sustain ground against external forces. Reliable Japanese ground improvement technologies are presented as well as the latest Building Information Modelling (BIM/Information and Communication Technology (ICT) used in their execution. The book also includes measures that can be taken against contaminated soil and considers ground improvement design on site. Unique focus on coastal applicationsSummarises leading edge Japanese practice The book suits professionals in the ground improvement industry, especially geotechnical designers and contractors. Cover Half Title Title Page Copyright Page Table of Contents Preface References Author Chapter 1 Introduction 1.1 Soft Soil in Coastal Areas 1.2 What Is ‘Ground Improvement for Coastal Engineering’? 1.3 Classification of Ground Improvements 1.4 Procedure of Ground Improvement Reference Chapter 2 Investigation, Design, and Execution 2.1 Investigation 2.2 Design Concept 2.3 Design Calculation Approach 2.3.1 Stability and Bearing Capacity 2.3.2 Settlement and Displacement 2.3.3 Liquefaction 2.3.4 Problems Caused By Water 2.4 Examples of Design Procedure 2.5 Physical and Numerical Modelling 2.5.1 Physical Modelling 2.5.2 Numerical Modelling 2.6 Execution 2.6.1 Use of Information Technology 2.6.2 Execution Management References Chapter 3 Ground Improvement Methods 3.1 Replacement Method 3.1.1 Overview 3.1.2 Investigation and Design 3.1.3 Execution 3.2 Surcharge and Drainage Methods 3.2.1 Vertical Drainage 3.2.1.1 Overview 3.2.1.2 Investigation and Design 3.2.1.3 Execution 3.2.2 Vacuum Consolidation Using Vertical Drains 3.2.2.1 Overview 3.2.2.2 Execution 3.3 Compaction Methods 3.3.1 Sand Compaction 3.3.1.1 Overview 3.3.1.2 Investigation 3.3.1.3 Design for Clayey Ground 3.3.1.4 Design for Sandy Ground 3.3.1.5 Execution 3.3.2 Vibro-Compaction 3.3.2.1 Overview 3.3.2.2 Investigation and Design for Sandy Ground 3.3.2.3 Investigation and Design for Clayey Ground 3.3.2.4 Execution 3.3.3 Heavy Tamping 3.3.3.1 Overview 3.3.3.2 Investigation and Design 3.3.3.3 Execution 3.3.4 Compaction Grouting 3.3.4.1 Overview 3.3.4.2 Investigation and Design 3.3.4.3 Execution 3.4 Cement Treatment Methods 3.4.1 Cement Shallow Mixing 3.4.1.1 Overview 3.4.1.2 Investigation 3.4.1.3 Design 3.4.1.4 Execution 3.4.2 Deep Mixing 3.4.2.1 Overview 3.4.2.2 Investigation 3.4.2.3 Design 3.4.2.4 Execution 3.4.3 Jet Grouting 3.4.3.1 Overview 3.4.3.2 Investigation and Design 3.4.3.3 Execution 3.5 Chemical Grouting Method 3.5.1 Overview 3.5.2 Investigation 3.5.3 Design 3.5.4 Execution References Chapter 4 Use of Improved Soil 4.1 Pre-Mixing Method 4.1.1 Overview 4.1.2 Investigation 4.1.3 Design 4.1.4 Execution 4.2 Pre-Mixing Method With Secondary Materials 4.2.1 Overview 4.2.2 Investigation 4.2.3 Design 4.2.4 Execution 4.3 Pneumatic Flow Mixing Method 4.3.1 Overview 4.3.2 Investigation 4.3.3 Design 4.3.4 Execution 4.4 Lightweight Mixing Method 4.4.1 Overview 4.4.2 Investigation 4.4.3 Design 4.4.4 Execution 4.5 Filter Press of Soft Clay 4.5.1 Overview 4.5.2 Investigation and Design 4.5.3 Execution 4.6 Usage of Ground Cemented By Deep Mixing 4.6.1 Overview 4.6.2 Quay Wall Construction Using Deep Mixing Method 4.6.3 Reinforcing Levees Using Deep Mixing Method 4.7 Reinforcement With Geosynthetics 4.7.1 Overview 4.7.2 Use in Shallow Layer Treatment 4.7.3 Geosynthetics Used for Interception 4.7.4 Geotextile Tubes 4.7.5 Earth Pressure Reduction References Chapter 5 Improvement of Contaminated Soil 5.1 Measures Against Contaminated Soil 5.2 Insolubilisation of Contaminated Soil By Cement Treatment 5.2.1 Overview 5.2.2 Investigation and Design 5.2.3 Execution 5.3 Enclosure of Contaminated Ground Using Cement-Treated Soil 5.3.1 Overview 5.3.2 Investigation and Design 5.3.3 Execution References Chapter 6 Future of Ground Improvement 6.1 Development of New Ground Improvement Methods 6.2 Expansion of Application Areas for Existing Technologies 6.3 Use of Information Technology 6.4 Environmental Impact Reduction Reference Index