| 致谢 | 第5-6页 |
| 摘要 | 第6-9页 |
| Abstract | 第9-11页 |
| 1 Introduction | 第19-27页 |
| 1.1 Background and motivation of research | 第19-23页 |
| 1.2 Outline of research | 第23-27页 |
| 2 Literature reviews | 第27-47页 |
| 2.1 The concept of damage detection | 第27页 |
| 2.2 Different techniques used in damage detection | 第27-41页 |
| 2.2.1 Frequency based damage detection methods | 第29-31页 |
| 2.2.2 Mode shapes based and mode shape curvatures based damage detection methods | 第31-34页 |
| 2.2.3 Dynamic measured flexibility based damage detection method | 第34-36页 |
| 2.2.4 Model updating based damage detection method | 第36-38页 |
| 2.2.5 Signal processing based damage detection methods | 第38-41页 |
| 2.3 Operational modal analysis (Output-only analysis) | 第41-43页 |
| 2.4 Damage detection without using modal parameters | 第43页 |
| 2.5 Signal correction | 第43-45页 |
| 2.6 Conclusions | 第45-47页 |
| 3 Theory and methodology of moving average filter based SHM | 第47-69页 |
| 3.1 introduction | 第47-49页 |
| 3.2 Moving average filters | 第49-51页 |
| 3.3 Primary FE models of simply supported beam | 第51-56页 |
| 3.3.1 General definitions required in ABAQUS software | 第51-55页 |
| 3.3.2 Defining damage at numerical model | 第55-56页 |
| 3.4 Validation of moving average filter based damage detection method | 第56-66页 |
| 3.4.1 Locating the damage | 第56-59页 |
| 3.4.2 Predicting the baseline | 第59-64页 |
| 3.4.3 Effect of velocity of moving load | 第64-65页 |
| 3.4.4 Multiple damage scenarios | 第65-66页 |
| 3.5 Why the MAF-based method is working? | 第66-67页 |
| 3.6 Conclusions | 第67-69页 |
| 4 Damage detection in simply supported steel beam under moving load: Experimental test | 第69-79页 |
| 4.1 Introduction | 第69页 |
| 4.2 Experimental model | 第69-72页 |
| 4.3 Sensor assessment and signal correction methods | 第72-73页 |
| 4.4 Results and discussion | 第73-77页 |
| 4.5 Conclusions | 第77-79页 |
| 5 Theory and methodology of RD technique based SHM | 第79-93页 |
| 5.1 Introduction | 第79-82页 |
| 5.2 Random Decrement techniques | 第82-85页 |
| 5.3 Laboratory model of simply supported beam | 第85-86页 |
| 5.4 Results and discussion | 第86-91页 |
| 5.4.1 Primary data of simply supported beam | 第86-87页 |
| 5.4.2 Normalizing the Arias intensity along the structure | 第87-90页 |
| 5.4.3 Locating damage in simply supported beam | 第90-91页 |
| 5.5 Conclusions | 第91-93页 |
| 6 Damage detection in a tied-arch bridge under moving load: Experimental test | 第93-107页 |
| 6.1 Introduction | 第93-94页 |
| 6.2 Experimental model | 第94-97页 |
| 6.3 Sensor assessment and signal correction methods | 第97-99页 |
| 6.4 Results and discussion | 第99-106页 |
| 6.4.1 Primary data of the tied-arch bridge | 第99-100页 |
| 6.4.2 Normalizing the Arias intensity along the structure | 第100-103页 |
| 6.4.3 Locating the connection loss in the cables at the tied-arch bridge | 第103-104页 |
| 6.4.4 Detecting small damage ratios in laboratory models | 第104-106页 |
| 6.5 Conclusions | 第106-107页 |
| 7 Damage detection of the tied-arch bridge under seismic load (numerical analysis) | 第107-127页 |
| 7.1 Introduction | 第107-110页 |
| 7.2 Selecting the seismic events | 第110页 |
| 7.3 Numerical simulation of the tied-arch bridge | 第110-115页 |
| 7.3.1 Preliminary numerical model | 第110-113页 |
| 7.3.2 Preliminary results of the tied-arch bridge under dead load | 第113-114页 |
| 7.3.3 Applying the seismic load | 第114-115页 |
| 7.4 Modal properties of tied-arch bridge using ARTeMIS | 第115-117页 |
| 7.4.1 Preliminary results of dynamic seismic analysis | 第115-116页 |
| 7.4.2 Determining the natural frequencies of the tied-arch bridge | 第116-117页 |
| 7.5 Damage detection of the tied-arch bridge | 第117-123页 |
| 7.5.1 Normalizing factor | 第118-120页 |
| 7.5.2 Locating the damage under seismic load | 第120-123页 |
| 7.6 Discussion | 第123-124页 |
| 7.6.1 Effect of damage on the natural frequencies | 第123-124页 |
| 7.6.2 Using band-pass filtering according to other natural frequencies | 第124页 |
| 7.7 Conclusions | 第124-127页 |
| 8 Conclusions and Outlook | 第127-131页 |
| 8.1 Conclusions | 第127-130页 |
| 8.2 Innovation points | 第130页 |
| 8.3 Outlook | 第130-131页 |
| References | 第131-139页 |
| Appendix 1: MATLAB Codes for Random Decrement Technique | 第139-143页 |
| Appendix 2: Details of the experimental test procedure of the tied-arch bridge | 第143-147页 |
| Appendix 3: SeismoSignal Guidance with an example | 第147-151页 |
| Appendix 4: ARTeMIS Guidance with an example | 第151-155页 |
| 作者简历及在学期间所取得的科研成果 | 第155-156页 |
| 1. Resume of the author | 第155页 |
| 2. The Research Results and Published Papers | 第155-156页 |
