Deformation measurements of tunnel segments at a newly developed test rig

Paul Gehwolf, Christoph Monsberger, Stefan Barwart, Robert Wenighofer, Robert Galler, Werner Lienhart, Michaela Haberler-Weber, Bernd Moritz, Christian Barwart, Andreas Lange

Research output: Contribution to journalArticlepeer-review


With the use of tunnel boring machines under different geological and geotechnical conditions, the support with precast elements has been state of the art for decades. For the verification of the load-bearing and deformation behaviour of these high-strength reinforced concrete elements under exact known loading conditions, a test rig has been developed and implemented in a cooperation between experts of Austrian Federal Railways (ÖBB-Infrastruktur AG, SAE Fachbereich Bautechnik/Tunnelbau) and the Montanuniverität Leoben (Chair of Subsurface Engineering). The newly developed segment test rig allows biaxial tests on real segments. Due to the modular construction it is feasible to test segments with different geometries and dimensions. The obtained findings should be included in the optimization of these elements. Furthermore, the optimisation of the reinforcement design and replacement of steel bar reinforcement with fibre reinforcement is being investigated. With this test rig, an important step has been taken towards new technologies and materials in the field of segment linings. Currently, tests with distributed fibre optic sensing systems are carried out in cooperation with the Graz University of Technology (Institute of Engineering Geodesy and Measurement Systems – IGMS). A fibre optic sensing cable can be embedded in the segment during production and used for lifelong in-situ deformation measurements of the segment
Translated title of the contributionDeformationsmessungen an Tübbingen mit einem neu entwickelten Prüfstand
Original languageEnglish
Pages (from-to)180 - 187
JournalGeomechanics and Tunnelling
Issue number3
Publication statusPublished - 2016

Fields of Expertise

  • Sustainable Systems

Treatment code (Nähere Zuordnung)

  • Application


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