| ABSTRACT | 第3-4页 |
| NOMENCLATURE | 第8-12页 |
| CHAPTER Ⅰ INTRODUCTION | 第12-28页 |
| 1.1 Background | 第12-16页 |
| 1.1.1 General Description of Mooring Systems | 第12-14页 |
| 1.1.2 General Description of Drag Anchors | 第14-15页 |
| 1.1.3 Installation of Drag Anchors in Seabed Soils | 第15-16页 |
| 1.2 Overview of Drag Anchor Studies and Applications | 第16-19页 |
| 1.2.1 Theoretical Predictions and Numerical Simulations | 第16-18页 |
| 1.2.2 Experimental Studies | 第18-19页 |
| 1.2.3 Field Applications | 第19页 |
| 1.3 Research Objective and Innovations | 第19-21页 |
| 1.4 Outline of the Dissertation | 第21-22页 |
| TABLES AND FIGURES IN CHAPTER Ⅰ | 第22-28页 |
| CHAPTER Ⅱ TECHNIQUES FOR MEASURING THE TRAJECTORY AND DETECTING THE MOVEMENT DIRECTION OF DRAG ANCHORS | 第28-58页 |
| 2.1 Introduction | 第28-31页 |
| 2.2 Model Experimental System | 第31-33页 |
| 2.3 Measurement Technique for the Trajectory | 第33-35页 |
| 2.4 Verification | 第35-36页 |
| 2.5 Measurement Technique for the Movement Direction | 第36-38页 |
| 2.6 Concluding Remarks | 第38-39页 |
| TABLES AND FIGURES IN CHAPTER Ⅱ | 第39-58页 |
| CHAPTER Ⅲ EXPERIMENTAL INVESTIGATION ON THE PENETRATION MECHANISM AND KINEMATIC BEHAVIOR OF DRAG ANCHORS | 第58-101页 |
| 3.1 Introduction | 第58-61页 |
| 3.2 Investigation of the Penetration Mechanism and Kinematic Behavior | 第61-68页 |
| 3.2.1 Effects of the Initial Orientation of the Anchor | 第62-63页 |
| 3.2.2 Effects of the Shank Angle | 第63-64页 |
| 3.2.3 Relationship between the Drag Distance and the Anchor Displacement | 第64-65页 |
| 3.2.4 Relationship between the Fluke Orientation and the Drag Angle at the Shackle | 第65-66页 |
| 3.2.5 Movement Direction of the Anchor | 第66-68页 |
| 3.3 Concluding Remarks | 第68-69页 |
| TABLES AND FIGURES IN CHAPTER Ⅲ | 第69-101页 |
| CHAPTER Ⅳ ANALYTICAL METHOD FOR DETERMINING THE MOVEMENT DIRECTION OF DRAG ANCHORS | 第101-145页 |
| 4.1 Introduction | 第101-103页 |
| 4.2 Mechanical Model for Drag Anchors | 第103-109页 |
| 4.2.1 Forces on the Anchor in Saturated Clay | 第104页 |
| 4.2.2 Forces on the Anchor in Saturated Sand | 第104-106页 |
| 4.2.3 Discussion on the Parameters | 第106-109页 |
| 4.3 Analytical Model for Predicting the Movement Direction | 第109-112页 |
| 4.3.1 Mechanism of Anchor Penetration | 第109-110页 |
| 4.3.2 Analytical Procedure for Determining the Movement Direction | 第110-112页 |
| 4.4 Movement Direction of the Anchor with a Rectangular Fluke Section | 第112-114页 |
| 4.4.1 Theoretical Analysis | 第112-113页 |
| 4.4.2 Parametric Analysis | 第113-114页 |
| 4.5 Movement Direction of the Anchor with a Wedge-shaped Fluke Section | 第114-117页 |
| 4.5.1 Theoretical Analysis | 第114-116页 |
| 4.5.2 Parametric Analysis | 第116-117页 |
| 4.6 Comparison between Analytical Predictions and Model Tests | 第117-118页 |
| 4.7 Concluding Remarks | 第118-120页 |
| TABLES AND FIGURES IN CHAPTER Ⅳ | 第120-145页 |
| CHAPTER Ⅴ INTERACTIONAL PROPERTIES BETWEEN THE DRAG ANCHOR AND THE INSTALLATION LINE | 第145-191页 |
| 5.1 Introduction | 第145-146页 |
| 5.2 Basic Definitions | 第146-147页 |
| 5.3 Drag Force at the Shackle | 第147-154页 |
| 5.3.1 Expressions Based on the Mechanical Model for Drag Lines | 第147-150页 |
| 5.3.2 Expressions Based on the Mechanical Model for Drag Anchors | 第150-151页 |
| 5.3.3 Verification with Model Tests in Saturated Sand | 第151-153页 |
| 5.3.4 Parametric Analysis | 第153-154页 |
| 5.4 Drag Angle at the Shackle | 第154-161页 |
| 5.4.1 Theoretical Relationship between the Drag Angle at the Shackle and the Embedment Depth | 第154-156页 |
| 5.4.2 Verification with Model Tests | 第156-157页 |
| 5.4.3 Parametric Analysis | 第157-158页 |
| 5.4.4 Analytical Method for Determining the Drag Angle at the Shackle | 第158-161页 |
| 5.5 Concluding Remarks | 第161-162页 |
| TABLES AND FIGURES IN CHAPTER Ⅴ | 第162-191页 |
| CHAPTER Ⅵ SUMMARY AND CONCLUSIONS | 第191-198页 |
| 6.1 Summary of the Present Work | 第191-192页 |
| 6.2 Main Conclusions | 第192-196页 |
| 6.3 Remarks on the Future Study | 第196-198页 |
| APPENDIX Ⅰ APPROXIMATION OF THE SURCHARGE q | 第198-201页 |
| APPENDIX Ⅱ COMPARISON BETWEEN THE LAST TWO ITEMS IN EQ. 4-6 | 第201-202页 |
| APPENDIX Ⅲ APPROXIMATION OF THE SHEAR STRESS ? | 第202-204页 |
| APPENDIX Ⅳ FORCES IN THE MOVEMENT DIRECTION FOR THE RECTANGULAR ANCHOR | 第204-207页 |
| APPENDIX Ⅴ FORCES IN THE MOVEMENT DIRECTION FOR THE WEDGE ANCHOR | 第207-210页 |
| APPENDIX Ⅵ RELATIONS AMONG DRAG FORCES AT DIFFERENT POINTS | 第210-211页 |
| APPENDIX Ⅶ ANALYSIS OF THE EXPRESSIONS EQS. 5-14 AND 5-17 | 第211-212页 |
| REFERENCES | 第212-219页 |
| LIST OF PUBLICATIONS AND PATENTS | 第219-221页 |
| ACKNOWLEDGEMENTS | 第221-223页 |
