Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Minimum Thickness of Long Span RC Deck Slabs for Composite 2-girder Bridges Designed by KL-510 Load Model

KL-510 하중모형을 적용한 강합성 2거더교 RC 장지간 바닥판의 최소두께

  • Received : 2014.04.29
  • Accepted : 2014.06.11
  • Published : 2014.06.30
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Abstract

The minimum thickness of long-span deck slab is proposed by checking the limit state according to the Korean highway bridge design code(limit state design). Both minimizing thickness and ensuring safety of deck slab are important design factors to increase a competitive price of the long span deck slabs. The required thicknesses for satisfying flexural capacity, preventing punching shear failure and limiting deflection were calculated by considering KL-510 load model which has increased total load compared to DB 24 from 432 kN to 510 kN. The results of the required thickness for various limit states were compared to propose the minimum thickness as a function of span length of deck slabs. The proposed minimum thickness is influenced by satisfying flexural capacity and limiting deflection. It turns out to be similar compared to the results of the previous study by ultimate strength design method even if the live load model was increased in total weights.

Keywords

References

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  1. Evaluation of Structural Performance of RC Deck Slabs by High-Strength Concrete vol.31, pp.3, 2016, https://doi.org/10.14346/JKOSOS.2016.31.3.89
  2. Minimum Thickness of Long-Span RC Deck Slabs for 2-girder Bridges Designed by 80 MPa Concrete vol.29, pp.5, 2014, https://doi.org/10.14346/JKOSOS.2014.29.5.097
  3. A Study on the Modified Simple Truss Model to Predict the Punching Shear Strength of PSC Deck Slabs vol.30, pp.5, 2015, https://doi.org/10.14346/JKOSOS.2015.30.5.67