5．4．2Internal Stresses of Pipeline
5．4．3Inertial Effects and Soil-Pipeline Contact Effects
5．4．4Effects of a Cover Layer
5．5Residual Soil Response around a Buried Pipeline
5．5．1Wave-Induced Pore Pressure Build-Up around a Buried Pipeline
5．5．2Poro-Elastic Seabed Model of Wave-Induced Residual Liquefaction
5．6Wave-Seabed-Pipeline Interactions in a Trench Layer
5．6．1Development of Liquefaction Potential
5．6．2Implementation for Practical Engineers
5．7Improved Analysis Method for Wave-Induced Pipeline Stability
5．7．1Physical Phenomena of Pipeline Losing On-Bottom Stability
5．7．2Criteria for Pipeline On-Bottom Instability
5．7．3Procedure for Analysis of Wave-Induced Pipeline On-Bottom Stability
5．7．4Comparison with DNV Recommended Practice
6 Three-Dimensional Model of Wave-Seabed Interactions around Breakwater Heads
6．1Introduction
6．2Wave Field around Breakwater Heads
6．2．1Linear Wave Model
6．2．2Non-Linear Wave Model
6．3Seabed Models
6．3．1Poro-Elastic Models of Oscillatory Soil Response
6．3．2Poro-Elastic Models of Residual Soil Response
6．3．3Poro-Elastoplastic Models
6．4Results and Discussions
6．4．1Wave Diffraction
6．4．2Wave Obliquity
6．4．3Comparison of 1D and 3D Models
6．4．4Comparison between Poro-Elastic and Poro-Elastoplastic Models
6．5Wave-Induced Oscillatory Soil Response around Two Breakwaters
7 Seabed Instability around Offshore Wind Turbine Foundations
7．1Introduction
7．2Monopile Foundation
7．2．1Seabed Model
7．2．2Wave Model
7．2．3Boundary Conditions
7．2．4Integrated Process
7．2．5Discussion： Seabed Response around a Monopile
7．2．6Discussion： Parametric Studies of Pore Pressure around the Monopile
7．2．7Discussion： Effect of Wavelength on Pore-Water Pressure around a Monopile
7．2．8Discussion： Soil Displacements
7．2．9Discussion： Displacement of the Monopile
7．3Case Study： Donghai Offshore Wind Farm， Shanghai， China
7．3．1General Introduction of Donghai Offshore Wind Farm
7．3．2Characteristics of DH-OWF and Its Engineering Solutions
7．3．3Foundation of Donghai Offshore Wind Farm
7．3．4Numerical Model
7．3．5Discussion：Effects of Wave Parameters on Hydrodynamics
7．3．6Discussion：Wave—Induced Pore Pressure around HRSF
7．3．7Discussion：Effects of Wave and Soil Parameters on Soil Response
7．3．8Discussion：Wave—Induced Liquefaction around HRSF
8 Physical Modelling：One-Dimensional Compressive Tests
8．1Introduction
8．2Experimental Facility
8．3Experiments with a Sandy Deposit
8．3．1Materials
8．3．2Experimental Procedure
8．3．3Comparison with Previous Analytical Solution
8．3．4Discusslon：Attenuation and Phase Lag of Pore Pressures
8．3．5Discusslon：Effects of Wave Cycles
8．3．6Discussion：Efiects of Wave Period and Wave Height
8．3．7Discussion：Efiects of Relative Density and Saturation
8．3．8Discussion：Sandy Deposit Liquefaction
8．3．9Discussion：Variations of Sandy Deposit Height
8．4Experiments with Sand．Clay Mixtures
8．4．1Experimental Details
8．4．2Discussion：Effects of Clay Content（cc）
8．4．3Discussion：Settlement ofthe Deposit
Appendix A Analytical Solution for a Seabed of Finite Thickness（Hsu&Jeng1994）
Appendix B Derivation of u-p Approximation（Jeng et a1．1999）
Appendix C Derivation of u-U Approximation（Cha et a1．2002）
Appendix D Mathematical Derivations of Analytical Solutions for Residual Soil Response（Jeng el a1．2007）
Appendix E Mathematical Model of the Two-Layered Viscous Fluid System（Liuet a1．2009）
References
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