| 摘要 | 第1-4页 |
| Abstract | 第4-13页 |
| Chapter 1 Introduction | 第13-25页 |
| ·Engineering Application of High Strength Steel | 第15-19页 |
| ·Application in the World | 第15-18页 |
| ·Application in China | 第18-19页 |
| ·Structural Steel Grades in China | 第19-20页 |
| ·Homogeneous and Hybrid Flexural Members | 第20-23页 |
| ·Organization of the Thesis | 第23-25页 |
| Chapter 2 Previous Research | 第25-68页 |
| ·Ductility of Steel Structures | 第25-34页 |
| ·Definitions of Rotation Capacity | 第27-30页 |
| ·Factors those Influence on the Ductility | 第30-34页 |
| ·Research History on I-Section Steel Flexural Members | 第34-55页 |
| ·Experimental Tests | 第35-44页 |
| ·Theoretical Methods | 第44-52页 |
| ·Empirical Methods | 第52-55页 |
| ·Classification of Steel Flexural Members and Code Provisions | 第55-68页 |
| ·Ductility for Plastic Design | 第55-57页 |
| ·Ductility Classes for Elements | 第57-58页 |
| ·Section Ductility Classification | 第58-60页 |
| ·Member Ductility Classification | 第60-62页 |
| ·Classification in Design Codes | 第62-65页 |
| ·Comparative Study of Code Provision for Flexural Members | 第65-68页 |
| Chapter 3 Experimental Study | 第68-108页 |
| ·Introduction | 第68-71页 |
| ·Properties of Test Specimens | 第71-81页 |
| ·Nominal Material Properties | 第71页 |
| ·Tension Coupon Testing | 第71-75页 |
| ·Test Specimen Fabrication | 第75-79页 |
| ·Calculated Resistance Properties | 第79-81页 |
| ·Test Setup | 第81-88页 |
| ·Experimental Setup and Specimen Bracing | 第81-85页 |
| ·Test Specimen Instrumentation | 第85-88页 |
| ·Experimental Test Procedures | 第88-89页 |
| ·Experimental Test Results | 第89-108页 |
| Chapter 4 Numerical Study | 第108-134页 |
| ·Finite Element Model | 第109-119页 |
| ·Finite Element Model Geometry | 第110-112页 |
| ·Finite Element Mesh | 第112-113页 |
| ·Imperfection Seed | 第113-115页 |
| ·Residual Stress | 第115-118页 |
| ·Material Property | 第118-119页 |
| ·Verification Study | 第119-134页 |
| ·Preliminary Verification Study | 第119-123页 |
| ·Verification Study Based on the Current Test Results | 第123-134页 |
| Chapter 5 Parametric Study and Results | 第134-176页 |
| ·Parameters Description | 第134-140页 |
| ·Loading Conditions | 第134-135页 |
| ·Material Properties and Section Types | 第135-136页 |
| ·Section Geometry and Lateral Bracing Configuration | 第136-140页 |
| ·An Equivalent Method to Determine Ductility of Uniform Moment Loading . | 第140-147页 |
| ·Theoretical Study | 第140-142页 |
| ·Correction Coefficient | 第142-146页 |
| ·Verification of Obtained Results of Equivalent Method | 第146-147页 |
| ·Influence of Section Type and Material Properties on Flexural Behavior | 第147-152页 |
| ·Comparative Study on Section Type | 第148-151页 |
| ·Mutual Effect of Local Slenderness | 第151-152页 |
| ·A New Method for Classification of I-Beams Based on Member Ductility | 第152-166页 |
| ·Introduction | 第152-153页 |
| ·Results and Discussion of Parametric Study | 第153-156页 |
| ·Limitation of Classification Criteria | 第156-162页 |
| ·Generalized Slenderness Concept | 第162-166页 |
| ·A New Direct Approach to Determine the Flexural Resistance of I-BeamsBased on Slenderness | 第166-176页 |
| ·Results and Discussion of Parametric Study | 第166-172页 |
| ·Comparative Study with Steel Design Codes | 第172-174页 |
| ·Design Procedure Using the Proposed Method | 第174-176页 |
| Chapter 6 Conclusion | 第176-180页 |
| ·Determination of Ductility of Uniform Moment Loading Based on theEquivalent Method | 第177页 |
| ·Classification of Steel I-Beams Based on the Member Ductility | 第177-178页 |
| ·Determination of Flexural Strength of Steel I-Beams Based on the Slenderness | 第178-179页 |
| ·Recommendations for Future Work | 第179-180页 |
| References | 第180-188页 |
| Acknowledgement | 第188-190页 |
| Appendix A | 第190-207页 |
| CV | 第207-208页 |
