| ACKNOWLEDGMENTS | 第5-6页 |
| 摘要 | 第6-7页 |
| ABSTARCT | 第7-8页 |
| LIST OF SYMBOLS | 第14-15页 |
| 1 INTRODUCTION | 第15-18页 |
| 1.1 Problem Statement | 第15-16页 |
| 1.2 Scope | 第16-17页 |
| 1.3 Thesis Outline and Workflow | 第17-18页 |
| 2 LITERATURE REVIEW | 第18-39页 |
| 2.1 Pile Tunnel Interaction Problem | 第18-20页 |
| 2.2 Lateritic Soils | 第20-30页 |
| 2.2.1 Mineral Composition, Physical and Mechanical Characteristic of Lateritic Soils | 第21-22页 |
| 2.2.2 Engineering Characteristics of Lateritic Soils | 第22-24页 |
| 2.2.3 Constitutive Models and Features for Lateritic Soils | 第24-26页 |
| 2.2.4 The Mohr- Coulomb's Model | 第26-28页 |
| 2.2.5 The Hardening Soil Model | 第28-29页 |
| 2.2.6 Response Characteristics of Lateritic Soils to Tunnelling | 第29-30页 |
| 2.3 Shanghai soft clay, Bangkok soft and stiff clays, Boom clay and London clay | 第30-31页 |
| 2.4 Modelling Approach of Tunnel Problems | 第31-39页 |
| 2.4.1 Modelling of Pile Group Effect on Tunnels | 第33-35页 |
| 2.4.2 Embedded Piles in Plaxis 3D | 第35页 |
| 2.4.3 Embedded Pile Row Element in Plaxis 2D | 第35-37页 |
| 2.4.4 Induced Structural Forces in Tunnel Lining due to Pile Loads | 第37-39页 |
| 3 3D COMPARATIVE ANALYSES OF FORCES AND DISPLACEMENTS OF TUNNEL LININGS IN CLAYS | 第39-57页 |
| 3.1 Selection of Appropriate Soil Constitutive Models | 第39-42页 |
| 3.2 Comparing Lining Force for Tunnels in Lateritic soil, Shanghai soft clay, Bangkok softclay, Bangkok stiff clay, Boom clay and London clay | 第42-45页 |
| 3.3 Modelling Approach | 第45-47页 |
| 3.4 3D Model for Step-by-Step Validation | 第47-48页 |
| 3.5 Parametric Analyses | 第48页 |
| 3.6 Results | 第48-57页 |
| 3.6.1 Ground Surface Settlements | 第48-50页 |
| 3.6.2 Lining Forces and Displacements | 第50-52页 |
| 3.6.3 Influence of Soil Parameter on the Mechanical Response of the Tunnel Lining inLateritic Soils | 第52-57页 |
| 4 COMPARING THE EFFECTS OF PILE GROUP LOADS ON TUNNEL LINING USING 2D AND 3DMODELS | 第57-70页 |
| 4.1 Finite Element Analyses | 第58-65页 |
| 4.1.1 Determining Load Capacity of Pile | 第58-60页 |
| 4.1.2 Finite Element Model for 2D Plain Strain Analyses | 第60-61页 |
| 4.1.3 Validity of the 2D Plain Strain Model | 第61页 |
| 4.1.4 Finite Element Model for 3D Analyses | 第61-62页 |
| 4.1.5 Constitutive Model and Material Properties for 2D Model | 第62-63页 |
| 4.1.6 Constitutive Model and Material Properties for 3D Model | 第63页 |
| 4.1.7 Numerical Simulation of the Pile-Tunnel Interaction | 第63-65页 |
| 4.2 Results | 第65-70页 |
| 5 EFFECTS OF PILE GROUP LOADS ON TUNNEL LINING IN SOFT AND STIFF CLAYS USING A 3DMODEL | 第70-101页 |
| 5.1 Model Geometry and Boundary Conditions | 第70-72页 |
| 5.2 Material Parameters and Constitutive Models | 第72-74页 |
| 5.3 Determination of Allowable Design Load of the Piles within the Various Clays | 第74-76页 |
| 5.4 Numerical Analyses Procedure for the Studies | 第76-77页 |
| 5.5 Model Validation | 第77-78页 |
| 5.6 Results | 第78-101页 |
| 5.6.1 Comparing Pile Loads Effects on Tunnel Lining in Lateritic Soil, Bangkok Stiff Clayand Bangkok Soft Clay | 第78-86页 |
| 5.6.2 Accessing the Influence of Soil Stiffness Modulus(E_(50)~(ref)) and At -Rest EarthPressure Coefficient (Ko) on Pile Group Load Effects on Tunnel Lining | 第86-94页 |
| 5.6.3 Influence of Pile Head Connection on Pile Group Load Effects on Tunnel Lining | 第94-96页 |
| 5.6.4 Influence of Pile length on the Pile Group Load Effects on Tunnel Lining | 第96-101页 |
| 6 CONCLUSIONS | 第101-103页 |
| REFERENCES | 第103-107页 |
| A FORM | 第107页 |
