A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nondestructive Testing and Identification for Bridge Rating: Pilot Project
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.
Nondestructive Testing and Identification for Bridge Rating: Pilot Project
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.
Nondestructive Testing and Identification for Bridge Rating: Pilot Project
A. E. Aktan (author) / M. Raghavendrachar (author)
1990
130 pages
Report
No indication
English
| British Library Online Contents | 2015
Bridge-Condition Assessment and Load Rating Using Nondestructive Evaluation Methods
| British Library Online Contents | 2000