原文传递
Nondestructive Testing and Identification for Bridge Rating: Pilot Project; Final rept
| 题名： | Nondestructive Testing and Identification for Bridge Rating: Pilot Project; Final rept |
| 作者： | Aktan, A. E.; Raghavendrachar, M. |
| 关键词： | Nondestructive tests; Impact tests; Bridge tests; Load bearing tests; Bridges; Dynamic response; Load bearing capacity; Impact forces; Deflection; Structural vibration; Vibration damping; Algorithms |
| 摘要： | A nondestructive bridge testing scheme based on a practical impact testing methodology has been described. In this method, acceleration responses at several points on a test bridge due to impact are measured and frequency response functions are computed. Using multi-reference curve-fitting algorithms, model parameters of the bridge viz., frequencies, damping and mode shapes are determined. The experimental results are then used in developing and calibrating a finite-element model of the test bridge, so that its frequencies and mode shapes correspond to those that are experimentally determined. Since the analytical model is calibrated with reference to results of the field tests, this model incorporates the existing state of the test bridge. The reliability of this model to correctly simulate the mechanisms of flexibility as well as the support and continuity conditions and, the soil-pile connectivity is verified through static truck-load tests. The calibrated analytical model is then used to determine the rating factor of the test structure. The ability to obtain flexibility of the test bridge directly through processing the experimental data without assuming the mass in also demonstrated. |
| 总页数： | 108p |
| 报告类型： | 科技报告 |
相关文献
- Modeling Issues Associated with Sensor Technologies for the Nondestructive Evaluation of Timber Bridges.
- Using Expert Opinion to Quantify Accuracy and Reliability of Nondestructive Evaluation of Bridges. Project Brief.
- Application of Innovative Nondestructive Methods to Geotechnical and Environmental Investigations. Final rept.
- User's Guide: Nondestructive Pavement Evaluation.
- Highway Bridge Rating by Nondestructive Proof-Load Testing for Consistent Safety; Final research rept
- Nondestructive Testing for Advanced Monitoring and Evaluation of Damage in Concrete Materials. Final rept. (Dec. 2001 - Aug. 2005).
检索历史
应用推荐
