The Semmering Base Tunnel is a railway tunnel 27.3 km long. ‘Mega’ civil engineering projects require geotechnical monitoring to validate construction techniques and materials – and reduce the risk of unforeseen events. This is not always easy. Total stations require the presence of survey personnel in the tunnel space during excavation. Steep angles, dust and dirt mean they are not always effective. Distributed fiber optic sensing provides continuous strain monitoring of the tunnel and shaft shotcrete linings during the 8-10 years construction and 150 years operation.
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Reinforced Earth Structures at Semmering Base Tunnel – Construction and Monitoring using Fiber Optic Strain Measurements’
W. Lienhart &F. Moser Institute of Engineering and Geodesy and Measurement Systems (EGMS), TU Graz, Austria
H. Schuller INSITU Geotechnik ZT GmbH, Graz
T. Schachinger OBB-Infrastructur AG, Vienna, Austria
Christoph M. Monsberger · Werner Lienhart
Distributed fiber optic shape sensing along shotcrete tunnel linings: Methodology, field applications, and monitoring results – Journal of Civil Structural Health Monitoring
Lienhart W, Buchmayer F, Klug F and Monsberger CM
Distributed fibre-optic sensing applications at the Semmering Base Tunnel, Austria. Proceedings of the Institution of Civil Engineers – Smart Infrastructure and Construction