Browse > Article
http://dx.doi.org/10.21022/IJHRB.2018.7.4.287

Fire Resistance Studies on High Strength Steel Structures  

Wang, Wei-Yong (School of Civil Engineering, Chongqing University)
Xia, Yue (School of Civil Engineering, Chongqing University)
Li, Guo-Qiang (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
Publication Information
International Journal of High-Rise Buildings / v.7, no.4, 2018 , pp. 287-298 More about this Journal
Abstract
High strength steels have been widely applied in recent years due to high strength and good working performance. When subjected to fire conditions, the strength and elastic modulus of high strength steels deteriorate significantly and hence the load bearing capacity of structures reduces at elevated temperatures. The reduction factors of mechanical properties of high strength steels are quite different from mild steels. Therefore, the fire design methods deduced from mild steel structures are not applicable to high strength steel structures. In recent ten years, the first author of this paper has carried out a lot of fundamental research on fire behavior of high strength steels and structures. Summary of these research is presented in this paper, including mechanical properties of high strength steels at elevated temperature and after fire exposure, creep response of high strength steels at elevated temperature, residual stresses of welded high strength steel member after fire exposure, fire resistance of high strength steel columns, fire resistance of high strength steel beams, local buckling of high strength steel members, and residual strength of high strength steel columns after fire exposure. The results show that the mechanical properties of high strength steel in fire condition and the corresponding fire resistance of high strength steel structures are different from those of mild steel and structures, and the fire design methods recommended in current design codes are not applicable to high strength steel structures.
Keywords
High strength steels; Fire resistance; Mechanical properties; Creep; Residual stress; Fire exposure;
Citations & Related Records
연도 인용수 순위
  • Reference
1 British Standards Institution (BSI). (2003). "The structural use of steelwork in buildings, Part 8: Code of practice for fire resistant design." BS5950-2003, London.
2 European Committee for Standardization (ECS). (2005). "Eurocode 3: Design of steel structures - Part 1.2: General rules for structural fire design." BS EN1993-1-2, Brussels, Belgium.
3 Fields, B. A., and Fields, R. J. (1989). "Elevated temperature deformation of structural steel." Rep. NISTIR 88-3899, NIST, Gaithersburg, MD.
4 National Standard of the People's Republic of China (GB). (2017). "Chinese code for fire safety of steel structure in buildings." GB51249-2017, China Plan Press, Beijing, China.
5 Qiang X., Bijlaard F.S.K, Kolstein H. (2012a). "Post-fire mechanical properties of high strength structural steels S460 and S690." Eng. Struct., (35): 1-10.
6 Qiang X., Bijlaard F.S.K, Kolstein H. (2013). "Post-fire performance of very high strength steel S960." J. Construc. Steel Res. (80): 235-242.
7 Qiang X., Bijlaard F.S.K., Kolstein H. (2012b). "Dependence of mechanical properties of high strength steel S690 on elevated temperatures." Constr. and Building Materials, 30: 73-79.   DOI
8 Qiang X., Bijlaard F.S.K., Kolstein H. (2012c). "Deterioration of mechanical properties of high strength structural steel S460N under steady state fire condition." Mater. Design, 36: 438-442.   DOI
9 Qiang X., Jiang X., Bijlaard F.S.K., Kolstein H. (2016). "Mechanical properties and design recommendations of very high strength steel S960 in fire." Eng. Struct., (112): 60-70.
10 SAC (Standardization Administration of the People's Republic of China). (2010). "Metallic materials ensile testing. 1: Method of test at room temperature." GB/T228.1-2010, China Standard Press, Beijing.
11 Wang W., Kodur V., Yang X., et al. (2014). "Experimental study on local buckling of axially compressed steel stub columns at elevated temperatures." Thin-walled struct., 82: 33-45.   DOI
12 Wang W., Liu T., and Liu J. (2015b). "Experimental study on post fire mechanical properties of high strength Q460 steel." J. Constr. Steel Res., 114:100-109.   DOI
13 Wang W., Li G. (2014). "An approach for evaluating fire resistance of high strength Q460 steel columns." Front. Struct. Civ. Eng., 8(1): 26-35.   DOI
14 Wang W., Li G., Ge Y. (2015a). "Residual stress study on welded section of high strength Q460 steel after fire exposure." Adv. Steel. Constr., 11(2): 150-164.
15 Wang W., Liu T. (2016). "Experimental and numerical study on post-fire behavior of high-strength Q460 steel columns." Adv. Struct. Eng., 19(12): 1-16.
16 Wang W., Ohmiya Y., Ma G. (2013a). "Fire resistance study of axially loaded high strength steel columns." Procedia Eng., 62: 690-701.   DOI
17 Wang W., Qin S. (2016). "Experimental investigation of residual stresses in thin-walled welded H-sections after fire exposure." Thin-walled Struct., (101): 109-119.
18 Wang W., Qin S., Kodur V., et al. (2018a). "Experimental study on residual stress in welded box-sections after high temperature exposure." Adv. Steel Constr., 14(1): 73-89.
19 Wang W., Wang K., Kodur V., et al. (2018b). "Mechanical properties of high strength Q690 steel at elevated temperature." J. Mater. in Civ. Eng., 30(5): 04018062.   DOI
20 Wang W., Zhang L., Ge Y., et al. (2018c). "Behavior of restrained high strength steel columns at elevated temperature." J. Constr. Steel Res., 148: 251-264.   DOI
21 Wang W., Zhou H., Zhou Y., et al. (2018d). "An approach for predicting fire resistance of high strength Q460 steel beams considering un-uniform temperature distribution." Fire Technology, 54(2):437-460.   DOI
22 Wang W., Yan S., and Liu J. (2017). "Test on temperature induced creep in high strength Q460 steel." Mater. Struct., 2: 50-68.
23 Wang, W., Yan, S., and Kodur, V. (2016). "Temperature Induced Creep in Low-Alloy Structural Q345 Steel." J. Mater. Civ. Eng., 28(6): 06016003.   DOI
24 Wang, W., Liu B., and Kodur V. (2013b). "Effect of temperature on strength and elastic modulus of high strength steel." J. Mater. in Civ. Eng., 25(2): 174-182.   DOI