The Application of Global Positioning Systems (GPS) and Linear Variable Differential Transducers (LVDT) for Bridge Deformation Monitoring

Civil engineers are in charge of determining the deformation of engineering structures including dams, bridges, and high-rise skyscrapers. Over time, all civil engineering structures deteriorate. Loading conditions, climatic changes, ground movement, building materials, and steel corrosion all contribute to the deterioration of bridges. Continuous monitoring is the most important component of such a structure because it provides quantitative data, analyses the structure’s state, identifies risky positions, and suggests early safety measures to take before it threatens the safety of vehicles, goods, and human life. Periodic visual inspections have been the typical method for monitoring bridges in most developing nations, depending on inspectors to identify regions and symptoms of degradation or aberrant behaviour. The purpose of this study is to monitor bridge deformation using GPS and Linear Variable Differential Transducers (LVDT). Linear Variable Differential Transducers were used to detect vertical deflections, accelerations, and strain, while the Global Positioning System (GPS) was used to define the horizontal locations of reference and monitoring sites (LVDT). According to the findings, the largest displacements in the x, y, and z components between zero and first epochs were 0.798m at point LT08, 0.865m at position BR13, and 0.56m at point LT02. The maximum deformations of LVDT sensors 1, 2, and 3 were 28.563mm, 31.883mm, and 40.926mm, respectively. The observations had a correlation value of 0.679, with standard deviations in x and y of 0.0168 and 0.0254, respectively.

Author(s) Details:

Selassie David Mayunga,
Department of Civil and Environmental Engineering, Botswana University of Science and Technology Private Bag 16, Palapye, Botswana.

M. Bakaone,
Department of Civil and Environmental Engineering, Botswana University of Science and Technology Private Bag 16, Palapye, Botswana.

Please see the link here: https://stm.bookpi.org/RDST-V3/article/view/6633

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