Steel and Composite Structures

  • 제14권3호
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  • Pages.295-312
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  • 2013
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

A simplified approach for fire-resistance design of steel-concrete composite beams

  • Li, Guo-Qiang (College of Civil Engineering, Tongji University) ;
  • Wang, Wei-Yong (College of Civil Engineering, Chongqing University)
  • 투고 : 2013.01.05
  • 심사 : 2013.01.22
  • 발행 : 2013.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, a simplified approach based on critical temperature for fire resistance design of steel-concrete composite beams is proposed. The method for determining the critical temperature and fire protection of the composite beams is developed on the basis of load-bearing limit state method employed in current Chinese Technical Code for Fire safety of Steel Structure in Buildings. Parameters affecting the critical temperature of the composite beams are analysed. The results show that at a definite load level, section shape of steel beams, material properties, effective width of concrete slab and concrete property model have little influence on the critical temperature of composite beams. However, the fire duration and depth of concrete slab have significant influence on the critical temperature. The critical temperatures for commonly used composite beams, at various depth of concrete and fire duration, are given to provide a reference for engineers. The validity of the practical approach for predicting the critical temperature of the composite beams is conducted by comparing the prediction of a composite beam with the results from some fire design codes and full scale fire resistance tests on the composite beam.

키워드

참고문헌

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피인용 문헌

  1. Behavior of Steel–Concrete Partially Composite Beams Subjected to Fire—Part 2: Analytical Study vol.53, pp.3, 2017, https://doi.org/10.1007/s10694-016-0624-0
  2. Analysis of corrugated steel web beam bridges using spatial grid modelling vol.18, pp.4, 2015, https://doi.org/10.12989/scs.2015.18.4.853
  3. Space grid analysis method in modelling shear lag of cable-stayed bridge with corrugated steel webs vol.24, pp.5, 2013, https://doi.org/10.12989/scs.2017.24.5.549
  4. Reinforcement design of the top and bottom slabs of composite box girder with corrugated steel webs vol.33, pp.4, 2013, https://doi.org/10.12989/scs.2019.33.4.537
  5. Practical Design Methods for Fire Resistance of Restrained Cellular Steel Beams vol.19, pp.6, 2013, https://doi.org/10.1007/s13296-019-00248-w