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A platform for research: civil engineering, architecture and urbanism
Determination of shield tunnel deformation under train load using MEMS accelerometers
Graphical abstract Display Omitted
Highlights Displacement was determined from acceleration in shield tunnel under train load. Speed of passing train was estimated from determined displacement response. Length of shield tunnel affected by train load was estimated. Shield tunnel deformations under train load were visualized.
Abstract For effective maintenance of infrastructure such as bridges and shield tunnels, in addition to visual inspection, it is important to measure responses to external loads such as strain and displacement, which allows engineers to evaluate the condition of such structures. Furthermore, in order to implement appropriate repair and reinforcement procedures for unanticipated displacement induced damage, it is essential to determine the deformation caused by external loads that lead to high strain. In this study, in order to determine the dynamic deformations of a shield tunnel under the load of a passing train, field measurements were first conducted using eight microelectromechanical systems accelerometers. A method was proposed to determine the displacement response from measured acceleration data that include the vibration rectification error. Finally, the deformations of the shield tunnel due to train load were visualized based on the displacement responses. The results allowed the deformations of the shield tunnel during train passage to be perceived visually.
Determination of shield tunnel deformation under train load using MEMS accelerometers
Graphical abstract Display Omitted
Highlights Displacement was determined from acceleration in shield tunnel under train load. Speed of passing train was estimated from determined displacement response. Length of shield tunnel affected by train load was estimated. Shield tunnel deformations under train load were visualized.
Abstract For effective maintenance of infrastructure such as bridges and shield tunnels, in addition to visual inspection, it is important to measure responses to external loads such as strain and displacement, which allows engineers to evaluate the condition of such structures. Furthermore, in order to implement appropriate repair and reinforcement procedures for unanticipated displacement induced damage, it is essential to determine the deformation caused by external loads that lead to high strain. In this study, in order to determine the dynamic deformations of a shield tunnel under the load of a passing train, field measurements were first conducted using eight microelectromechanical systems accelerometers. A method was proposed to determine the displacement response from measured acceleration data that include the vibration rectification error. Finally, the deformations of the shield tunnel due to train load were visualized based on the displacement responses. The results allowed the deformations of the shield tunnel during train passage to be perceived visually.
Determination of shield tunnel deformation under train load using MEMS accelerometers
Sekiya, Hidehiko (author) / Masuda, Keita (author) / Nagakura, Shinobu (author) / Inuzuka, Shinichi (author)
2022-04-21
Article (Journal)
Electronic Resource
English
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