Development and Application of Linear Variable Differential Transformer (LVDT) Sensors for the Structural Health Monitoring of an Urban Railway Bridge in Vietnam

Authors

  • Nguyen Thi Cam Nhung University of Transport and Communications, Vietnam https://orcid.org/0000-0001-5103-6642
  • Le Van Vu University of Transport and Communications, Vietnam
  • Huu Quyet Nguyen University of Transport and Communications, Vietnam
  • Dang Thi Huyen University of Transport and Communications, Vietnam
  • Duc Binh Nguyen ISISE, Department of Civil Engineering, University of Minho, Portugal
  • Minh Tran Quang ISISE, Department of Civil Engineering, University of Minho, Portugal
Volume: 13 | Issue: 5 | Pages: 11622-11627 | October 2023 | https://doi.org/10.48084/etasr.6192

Abstract

Measuring the structure's displacement plays a very important role in ensuring the safe operation of railway bridges in general and urban railway bridges in particular. In Vietnam, traditional methods using high-precision mechanical gauges have been used to measure the displacement of railway bridges. However, these methods need a lot of effort in installation and traffic control during implementation. These methods are based on the static principle: The test loads are placed on the bridge structure, and then the structure's displacement is observed. The safety assessment and analysis results are guaranteed by multiplying the dynamic coefficients, leading to some assessments that may not be close to the actual exploitation of the bridge structure. Therefore, the current study presents a new solution for measuring the displacement of railway bridge structures. This method uses Linear Variable Differential Transformer (LVDT) sensors to record the continuous displacement of the structure during the time the train passes over the bridge. Through field measurements combined with a finite element analysis model, the research focuses on developing and applying LVDT sensors in urban railway bridge structure health monitoring. At the same time, the potential of developing this method in Vietnam in the future is evaluated.

Keywords:

LVDT, dynamic displacement, urban railway

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Author Biographies

Nguyen Thi Cam Nhung , University of Transport and Communications, Vietnam

 

 

 

Le Van Vu, University of Transport and Communications, Vietnam

 

 

Huu Quyet Nguyen, University of Transport and Communications, Vietnam

 

 

Dang Thi Huyen, University of Transport and Communications, Vietnam

 

 

Duc Binh Nguyen, ISISE, Department of Civil Engineering, University of Minho, Portugal

 

 

 

Minh Tran Quang, ISISE, Department of Civil Engineering, University of Minho, Portugal

 

 

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How to Cite

[1]
Nhung , N.T.C., Vu, L.V., Nguyen, H.Q., Huyen, D.T., Nguyen, D.B. and Quang, M.T. 2023. Development and Application of Linear Variable Differential Transformer (LVDT) Sensors for the Structural Health Monitoring of an Urban Railway Bridge in Vietnam. Engineering, Technology & Applied Science Research. 13, 5 (Oct. 2023), 11622–11627. DOI:https://doi.org/10.48084/etasr.6192.

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