STATIC AND DYNAMIC MEASUREMENTS ON A NEWLY DEVELOPMENT PRECAST CONCRETE TRACK FOR HIGH SPEED RAILWAY TRAFFIC USING EMBEDDED FIBER-OPTIC SENSORS |
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| W. Habel, D. Hofmann, F. Basedau, A. Barner, S. Crail, D. Reichel, U. Schreiner, E. Lindner |
- Abstract:
- In a German slab track system (“Feste Fahrbahn” FF, system Bögl) for speeds up to 300 km/h and more different fibre optic sensors have been embedded in several levels and locations of the track system. The track system consists of prestressed precast panels of steel fibre concrete which are supported by a cast-in-situ concrete or asphalt base course. The sensors are to measure the bond behaviour or the stress transfer in the track system. For that, tiny fibre-optic sensors - fibre Fabry-Pérot and Bragg grating sensors - have been embedded very near to the interface of the layers. Measurements were taken on a full scale test sample (slab track panel of 6.45 m length) as well as on a real high speed track. The paper describes the measurement task and discusses aspects with regard to sensor design and prefabrication of the sensor frames as well as the embedding procedure into the concrete track. Results from static and dynamic full scale tests carried out in the testing laboratory of BAM and from measurements on a track are given.
- Keywords:
- railway track system, bonding behaviour, fibre-optic sensor, concrete composites
- Download:
- IMEKO-TC20-2002-005.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC20
- Event name:
- Joint International Conference on Force, Mass, Torque, Hardness and Civil Engineering Metrology in the age of globalization
- Title:
- 1st Conference on Civil Engineering Metrology (together with 19th TC3 Conference on Force, Mass and Torque Measurement and 8th HARDMEKO TC5 Conference on Hardness Measurement)
- Place:
- Celle, GERMANY
- Time:
- 24 September 2002 - 26 September 2002