| 摘要 | 第4-5页 |
| Abstract | 第5-6页 |
| Chapter 1 Introduction | 第9-17页 |
| 1.1 Background and significance of this research | 第9-12页 |
| 1.2 The Research Status and Analysis | 第12-15页 |
| 1.2.1 Abroad | 第12-13页 |
| 1.2.2 Domestic | 第13-15页 |
| 1.3 The research work in this work and the thesis framework | 第15-17页 |
| Chapter 2 the uneven settlement of pile foundation of the simple supported beam bridge | 第17-44页 |
| 2.1 All necessary information, drawings of the bridge was investigated | 第17-18页 |
| 2.2 A brief study on the uneven settlement problem in the permafrost region | 第18-22页 |
| 2.3 The basic model of finite element analysis | 第22-26页 |
| 2.4 The Calculation of the deformation and strain using finite element model according the known settlement information for different cases | 第26-39页 |
| 2.4.1 Self-weight effect analysis | 第26页 |
| 2.4.2 Analysis results of stress and displacement of bridge pile foundation settlement for (case 1) | 第26-29页 |
| 2.4.3 Analysis results of strain of bridge pile foundation settlement (case1) | 第29-34页 |
| 2.4.4 Analysis results of stress and displacement of bridge pile foundation settlement for (case 2) | 第34-36页 |
| 2.4.5 A comparison of the bridge stress under two different support settlement cases in three different locations | 第36-39页 |
| 2.5 Analyze The Analysis of the cross connection damage due to the uneven settlement of pile foundation for different cases | 第39-42页 |
| 2.5.1 Working condition design | 第39-40页 |
| 2.5.2 Hinge joint condition 1 | 第40-41页 |
| 2.5.3 Hinge joint condition (2) | 第41页 |
| 2.5.4 Hinge joint condition (3) | 第41-42页 |
| 2.6 Brief summary | 第42-44页 |
| Chapter 3 Vibration-based cross connection damage detection for the simple supported beam bridge | 第44-62页 |
| 3.1 A brief study on the vibration-based damage detection | 第44-46页 |
| 3.1.1 Modal Assurance Criteria | 第44页 |
| 3.1.2 Coordinate modal assurance criterion (COMAC) | 第44-45页 |
| 3.1.3 Curvature mode method | 第45页 |
| 3.1.4 Frequency based damage detection method | 第45-46页 |
| 3.2 The Modal analysis of the finite element model of the original bridge and the damaged bridge | 第46-56页 |
| 3.3 The Damage detection and localization using above modal analysis, using two methods in 3.1 for different uneven settlement cases | 第56-61页 |
| 3.3.1 The damage detection based on MAC method | 第56-59页 |
| 3.3.2 The damage location based on the COMAC method | 第59-61页 |
| 3.4 Brief summary | 第61-62页 |
| Chapter 4 Monitoring data analysis and condition assessment for a real bridge | 第62-92页 |
| 4.1 The sensor types, layouts, and numbers | 第62-64页 |
| 4.2 Temperature data analysis | 第64-65页 |
| 4.3 Strain data analysis | 第65-82页 |
| 4.4 Vibration signals analysis | 第82-91页 |
| 4.5 Brief summary | 第91-92页 |
| Conclusions | 第92-94页 |
| References | 第94-97页 |
| Acknowledgement | 第97-98页 |
