Ambient Vibration Testing of a Pedestrian Bridge Using Low-Cost Accelerometers for SHM Applications
Abstract
:1. Introduction
2. Bridge Description
3. System Identification
3.1. Finite Element Model
3.2. Instrumentation
3.3. Testing
3.4. Data Pre-Processing
3.5. Frequency Domain Decomposition
4. Comparison of Finite Element Model and System Identification
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Concrete Properties | |
---|---|
Density | 2500 () |
Poisson Ratio | 0.15 |
Modulus of Elasticity | 30 GPa |
Shear Modulus | 13.4 GPa |
Experimental (SI) | Analytical (FEM) | Absolute Difference (%) | |
---|---|---|---|
1st Mode | 10.94 Hz | 9.858 Hz | 10.98 % |
2nd Mode | 38.34 Hz | 38.857 Hz | 1.33 % |
3rd Mode | 75.31 Hz | 85.422 Hz | 11.84 % |
Experimental Mode | ||||
---|---|---|---|---|
Analytical Mode | 1st | 2nd | 3rd | |
1st | 0.979 | 0.114 | 0.241 | |
2nd | 0.054 | 0.923 | 0.000 | |
3rd | 0.216 | 0.019 | 0.807 |
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Ali, A.; Sandhu, T.Y.; Usman, M. Ambient Vibration Testing of a Pedestrian Bridge Using Low-Cost Accelerometers for SHM Applications. Smart Cities 2019, 2, 20-30. https://doi.org/10.3390/smartcities2010002
Ali A, Sandhu TY, Usman M. Ambient Vibration Testing of a Pedestrian Bridge Using Low-Cost Accelerometers for SHM Applications. Smart Cities. 2019; 2(1):20-30. https://doi.org/10.3390/smartcities2010002
Chicago/Turabian StyleAli, Azam, Talha Yousaf Sandhu, and Muhammad Usman. 2019. "Ambient Vibration Testing of a Pedestrian Bridge Using Low-Cost Accelerometers for SHM Applications" Smart Cities 2, no. 1: 20-30. https://doi.org/10.3390/smartcities2010002