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Masonry Arch Bridge Reinforcement – ‘XiSPAN’ Matt Hunt

Masonry Arch Bridge Reinforcement – ‘XiSPAN’ Matt Hunt. Masonry Arch Bridges. Over 25,000 on railways in the UK, 200,000 in Europe Many over 100 years old Increased tonnage and increased line speeds Heavier use on diversionary freight routes. XiTRACK Concept.

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Masonry Arch Bridge Reinforcement – ‘XiSPAN’ Matt Hunt

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  1. Masonry Arch Bridge Reinforcement – ‘XiSPAN’Matt Hunt

  2. Masonry Arch Bridges • Over 25,000 on railways in the UK, 200,000 in Europe • Many over 100 years old • Increased tonnage and increased line speeds • Heavier use on diversionary freight routes

  3. XiTRACK Concept • 2-component polyurethane, with designable properties • Mixed on-site at point of application and poured over ballast • Penetrates and captures ballast stones in a strong matrix • Utilise compressive strength of ballast • Tensile strength provided by polyurethane = +

  4. Existing situation

  5. Stress and Loading

  6. Intense loads

  7. Distributed Loads

  8. How it works

  9. Analysis (LimitState:Geo) 9

  10. Installation ‘the easy bit’

  11. Results Monitoring

  12. Creating a ‘standard detail’ option, which would be over designed on most bridges but avoids the full design process for each structure Inclusion of waterproofing Development

  13. Can be delivered now Can easily be incorporated with track renewals Spandrels can be protected with upstands or beams Removal of DTS ‘prohibited’ status Longer lasting remedial work such as pointing Operational Benefits

  14. A ‘standard detail’ option 14

  15. NWR Partnership Awards

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