Experimental Study on Safety of Bridge Deck using UFC
By T. Ichinomiya, S. Tarutani, H. Kanaji and T. Kosaka
Concrete Journal, Vol.53, No.8, Aug. 2015
- Synopsis
- In recent years, the occurrence in steel deck welds of fatigue cracks caused by deformation arising from vehicle travel has become conspicuous, and costs required for maintenance such as inspection and repair are rising. In response to this situation, the authors developed waffle-type slabs that use ultra high strength fiber reinforced concrete (UFC) for high durability and light weight on a par with that of steel slabs. Thus far, stress verification by FEM analysis and verification of safety against fatigue through wheel load running tests have been conducted. In the present study, load testing was performed on test specimens after subjecting them to the wheel load running test, for the purpose of identifying the failure mode and verifying safety in terms of fracture strength. As a result, the failure mode was identified as flexural failure, and the specimens were confirmed to have load-bearing capacity 7.5 times the design wheel load.
- Keywords:
- ultra high strength fiber reinforced concrete, highway bridge deck, failure strength, wheel load running test
