原文传递
Dynamic Vibration Techniques in Highway Bridge Monitoring; Final rept
| 题名： | Dynamic Vibration Techniques in Highway Bridge Monitoring; Final rept |
| 作者： | DeWolf, J. T.; Zhao, J. |
| 关键词： | Bridges(Structures); Vibration Tests; Dynamic structural analysis; Damage assessment; Monitoring; Steel bridges; Expansion joints; Bearings |
| 摘要： | Currently, there are different monitoring techniques which can be used for damage detection in bridges. These include approaches based on both static and dynamic behavior. The use of dynamic properties has advantages over static properties, since components of the dynamic properties are only marginally influenced by variations in the loading. When dynamic properties are used, field studies have shown that it is not always sufficient to use only the tradtional natural frequencies and modal displacements. Current research on bridge damage detection indicates that derivatives of natural frequencies and modal displacements, including the modal flexibility, the modal assurance criterion, and the coordinate model assurance criterion, may be used to generate effective diagnostic parameters for damage identification. This report presents a review of all current methods which use vibrational information for bridge monitoring and damage detection. The methods are applied to the results from a field study of a bridge in which expansion bearings were partially restrained in colder weather. |
| 总页数： | 60p |
| 报告类型： | 科技报告 |
相关文献
- DYNAMIC LOAD TESTS IN BRIDGE MANAGEMENT.
- Effects of Temperature on Bridge Dynamic Properties.
- Effects of Temperature on Bridge Dynamic Properties.
- Experimental Testing of Controllable Damping Devices toward Extending the Lifespan of Existing Highway Bridges
- Long-Term Structural Performance Monitoring of Bridges Phase II: Development of Baseline Model and Methodology for Health Monitoring and Damage Assessment.
- Long-Term Structural Performance Monitoring of Bridges. Phase II: Development of Baseline Model and Methodology for Health Monitoring and Damage Assessment. Final rept.
检索历史
应用推荐
