Fire-resistance performance of simply supported fire-resistant steel-concrete composite beams

被引：0
|
作者：
Jiang X. [1 ]
Tong G. [1 ]
Zhang L. [1 ]
机构：
[1] Department of Civil Engineering, Zhejiang University, Hangzhou
来源：
Tong, Genshu (tonggs@zju.edu.cn) | 1600年 / Harbin Institute of Technology卷 / 49期
关键词：
Composite beam; Fire resistance limit; Fire resistance performance; Fire-resistant steel; Parameter analysis;
D O I：
10.11918/j.issn.0367-6234.201610101
中图分类号：
学科分类号：
摘要：
To study the fire performances of the simply supported fire-resistant steel-concrete composite beams (FRSCCB), the simply supported FRSCCB with fireproof coating and fire-proof board under standard fire were simulated by the finite element (FE) software ABAQUS. The effects of the load-ratio, the fire-insulation of the steel beam, the strength of materials, the section profiles and the diameter of longitudinal rebars in the concrete slab on the fire performance of the simply supported FRSCCB were analyzed. It is shown that the two most important factors, which influence the fire resistance for the simply supported FRSCCB, are the load-ratio and the fire-insulation thickness of the steel beam. The thicknesses of the beam plates and the width of the beam flange have favorable effect on the FRSCCB performance, but the strength of materials, the height of the beam, the thickness of the slab and diameter of the rebars have less influence. The fire-proof board has better fire-proof protection effect than the fire-proof coating under the same condition. When load ratio is 0.5~0.7, the fire-resistance limitation is increased by over 35% and the fire-insulation thickness can be decrease by 30% when the FRSCCB is used. The simplified calculation method for predicting the fire resistance limit according to Chinese code (CECS 200: 2006) is conservative compared with the FE results when the load-ratio is small. © 2017, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.
引用
收藏
页码：68 / 74
页数：6
相关论文
共 16 条
  • [1] Yu Z., Ding F., Fire performance research and application on steel-concrete composite structures, Journal of Building Structures, 31, 6, pp. 96-109, (2010)
  • [2] Rose P.S., Bailey C.G., Burgess I.W., Et al., The influence of floor slabs on the structural performance of the Cardington frame infire, Journal of Constructional Steel Research, 1, 46, pp. 310-311, (1998)
  • [3] Li G., Zhou H., Experimental study on the fire-resistance of steel-concrete composite beams, China Civil Engineering Journal, 40, 10, pp. 19-26, (2007)
  • [4] Lu J., Dong Y., Yang Z., Deformation investigation of single-span composite beam subjected to fire, Journal of Harbin Institute of Technology, 43, 8, pp. 16-20, (2011)
  • [5] Gao X., Huang W., Zhu H., Experimental research on cold-formed thin-walled channel steel concrete beam exposed to fire, Journal of Building Structures, 33, 5, pp. 141-149, (2012)
  • [6] Wang W., Li G., Chen L., Et al., Experimental study on fire resistance of steel bar truss slab and steel composite beams, China Civil Engineering Journal, 48, 9, pp. 67-75, (2015)
  • [7] Yao W., Huang Q., Zhang J., Experimental study on mechanical performance of steel-concrete girders under fire loading, Engineering Mechanics, 33, 8, pp. 58-65, (2016)
  • [8] Ding J., Li G., Sakumoto Y., Parametric studies on fire resistance of fire-resistant steel members, Journal of Constructional Steel Research, 60, pp. 1007-1027, (2004)
  • [9] Garcia H., Biezma M.V., Cuadrado J., Et al., Study of historical developments in the use of fire resistant steels, Materials at High Temperatures, 30, 4, pp. 313-319, (2013)
  • [10] Liu Y., Tong G., Zhang L., Fire resistance and load-bearing capacity of concrete filled fire-resistant steel tubular columns with circular cross-section, Journal of Zhejiang University (Engineering Science), 49, 2, pp. 208-217, (2015)
12