Analysis of Fatigue Performance in Bolted Connections of Modern Steel Structures Under Variable Loads

1. Introduction 2. Literature Review 2.1 Historical Perspective on Fatigue in Steel Structures 2.2 Advances in Bolted Connection Studies 2.3 Current Methodologies in Fatigue Analysis 3. Material and Methods 3.1 Selection of Steel Grades 3.2 Description of Test Specimens 3.3 Testing Equipment and Environment 4. Fatigue Performance in Bolted Connections 4.1 Definition and Importance 4.2 Common Failure Mechanisms 4.3 Factors Influencing Fatigue Behavior 5. Variable Load Analysis 5.1 Types of Loads Considered 5.2 Modeling of Load Variability 5.3 Impact on Structural Integrity 6. Experimental Results 6.1 Data Collection and Processing 6.2 Analysis of Fatigue Life 6.3 Influence of Load Variability 7. Discussion 7.1 Comparison with Previous Studies 7.2 Interpretation of Key Findings 7.3 Practical Implications and Guidelines 8. Conclusion and Future Work 8.1 Summary of Main Contributions 8.2 Limitations of Current Study 8.3 Suggestions for Future Research