Dynamic Deformation Monitoring of Lotsane Bridge Using Global Positioning Systems (GPS) and Linear Variable Differential Transducers (LVDT)

Authore(s) : Selassie David Mayunga || Department of Civil and Environmental Engineering

Volume : (9), Issue : (8), February - 2020

Abstract :

The measurements and analysis of deformation of engineering structures such as dams, bridges and high-rise buildings are important tasks for civil engineers. It is evident that, all civil engineering structures are susceptible for deterioration over a period of time. Bridges in particular, deteriorate due to loading conditions, environmental changes, earth movement, material used during construction, age and corrosion of steel. Continuous monitoring of such structure is the most important aspect as it provides quantitative information, assesses the state of the structure, detects unsafe positions and proposes early safety measures to be taken before it can threaten the safety of vehicles, goods and human life. Despite government’s efforts to construct roads and highways, bridge deformation monitoring has not been given priority in most of African countries and ultimately causes some bridges to collapse unexpectedly. The purpose of this research is to integrate Global Positioning System (GPS) and Linear Variable Differential Transducers (LVDT) to monitor deformation of a bridge. The horizontal positions of reference and monitoring points were determined using Global Positioning System (GPS) while the vertical deflections, accelerations and strain were determined using Linear Variable Differential Transducers (LVDT). The maximum displacements obtained between zero and first epochs in x, y and z components were 0.798 m, at point LT08, 0.865 m at point BR13, and 0.56 m at point LT02 respectively. The maximum deflections for LVDT 1, 2 and 3 are 28.563 mm, 31.883 mm and 40.926 mm respectively. Finally, the correlation coefficient for the observations was 0.679 with standard deviations of 0.0168 and 0.0254 in x and y respectively. Our results identified some slight displacements in horizontal components at the bridge.

Article: Download PDF Journal DOI : 110/321

Cite This Article:

Article No : 12223

Number of Downloads : 101

References :

Beshr, A.A. (2004) Accurate Surveying Measurements for Smart Structural Members. M.Sc. Thesis, Public Works Department, Faculty of Engineering, Mansoura University, El-Mansoura. Beshr, A.A. (2010) Development and Innovation of Technologies for Deformation Monitoring of Engineering Structures Using Highly Accurate Modern Surveying Techniques and Instruments. Ph.D. Thesis, Siberian State Academy of Geodesy, Novosibirsk, Surveying Techniques... More

1. Beshr, A.A. (2004) Accurate Surveying Measurements for Smart Structural Members. M.Sc. Thesis, Public Works Department, Faculty of Engineering, Mansoura University, El-Mansoura.
2. Beshr, A.A. (2010) Development and Innovation of Technologies for Deformation Monitoring of Engineering Structures Using Highly Accurate Modern Surveying Techniques and Instruments. Ph.D. Thesis, Siberian State Academy of Geodesy, Novosibirsk, Surveying Techniques and Instruments.
3. Daniele, I., et al. (1999) Long-Term Monitoring of a Concrete Bridge with 100+ Fiber Optic Long-Gage Sensors. Proceedings of SPIE, 3587, 1-7.
4. Erol, S. (2004) A General Review of the Deformation Monitoring Techniques and a Case Study: Analyzing Deformations Using GPS/Levelling. 1-7.
5. Phares, B.M., et al. (2001) Reliability and Accuracy of Routine Inspection of Highway Bridges. Journal of the Transportation Research Board, 1749, 81-92. https://doi.org/10.3141/1749-13
6. Bennetts, et al. (2001) Using Data to Explore Trends in Bridge Performance. Journal of Smart Infrastructure and Construction, 171, 14-28. https://doi.org/10.1680/jsmic.17.00022.
7. Handayani, et al. (2015) Preliminary Study of Bridge Deformation Monitoring Using GPS and CRP (Case Study: Suramadu Bridge). Procedia Environmental Sciences, 24, 266-276. https://doi.org/10.1016/j.proenv.2015.03.035
8. Mayunga, S.D. and Thabo, R. (2019) Deformation Monitoring of Lotsane Bridge Using Geodetic Method. International Journal of Scientific Engineering and Research, 7, 21-27.
9. Amin, N.M., et al. (2017) Condition Rating System of Bridges in Malaysia: A Case Study. Journal of Engineering and Applied Sciences, 12, 787-791.
10. Aktan, A.E., et al. (2020) Development of a Model Health Monitoring Guide for Major Bridges. Technical Report, Drexel University, Philadelphia.
11. Meng, X., et al. (2011) Using Multi-Constellation GNSS and EGNOS for Bridge Deformation Monitoring. https://fig.net/resources/proceedings/2011/2011_lsgi/session_3a/meng_gogoi_dodson _roberts_brown.pdf
12. Kessler, S.S. (2014) Spearing, Structural Health Monitoring of Composite Materials Using Piezoelectric Sensors. Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge.
13. Amin, Z.M. and Akib, W.A.W. (2003) Experimental Detection of the Penang Bridge Vibration with Real Time Kinematic GPS. International Symposium and Exhibition on Geoinformation, Kuala Lumpur, 13-14 October 2003, 9.
14. Park, H.S., Sohn, H.G., Kimi, I.S. and Park, J.H. (2008) Application of GPS to Monitoring of Wind Induced Responses of High-Rise Building. The Structural Design of Tall and Special Buildings, 17, 117-132. https://doi.org/10.1002/tal.335
15. Nehdi (2018) Condition Assessment of Reinforced Concrete Bridges: Current Practice and Research Challenges. Infrastructures, 3, 36. https://doi.org/10.3390/infrastructures3030036
16. Featherstone, W.E., Denith, M.C. and Kirby, J.F. (1998) Strategies for the Accurate Determination of Orthometric Heights from GPS. Survey Review, 34, 278-296. https://doi.org/10.1179/sre.1998.34.267.278
17. Çelik, R.N., et al. (2001) Monitoring Deformation on Karasu Viaduct Using GPS and Precise Levelling Techniques. Kluwer Academic Publishers, Dordrecht. https://doi.org/10.1007/978-94-010-0696-5_28

 ... Less