A test rig to investigate slab track structures for controlling ground vibration
✍ Scribed by S.J. Cox; A. Wang; C. Morison; P. Carels; R. Kelly; O.G. Bewes
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 345 KB
- Volume
- 293
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
This paper describes a test rig developed within the CONVURT research project in an attempt to bridge the gap between bench top tests on individual components and full-scale installation on service track. A large test rig has been constructed based on three 2.5 m long full-scale floating track slab elements. These can be directly connected to the base slab, or resiliently supported. Two 12 m long rails are attached to the slab elements with different fastener systems that can provide a wide range of stiffness values. The track can be pre-loaded, and the protruding ends of the rail are damped to reduce end reflections. The primary purpose of the test rig is to measure the dynamic properties of a range of different floating slab and direct fixation fastening systems. A mathematical track model has been used to extract dynamic parameters of the resilient elements in the systems, which are then used to predict performance in track.