The behavior of composite floors under fire (Case Study: The building of Maskan Mehr in Kermanshah province)

Document Type : Original Article

Authors

1 University of Isfahan

2 International Institute of Earthquake Engineering and Seismology

3 Assistant Professor, University of Isfahan

Abstract

Nowadays, a simple composite floor consisting of the concrete slab and steel castellated beam is considered as one of the most economical floors in the steel structures. However, due to the permanent danger of fire in buildings, it is essential to evaluate the composite floor's behavior against fire. Therefore, in the present study, the performance of the composite floor of the Building of Mehr House in Kermanshah province is investigated as a case study. In this study, non-linear coupling temperature-displacement analysis and explicit method in Finite element software and linear temperature analysis are applied to analyze the models. The results showed that with increasing temperature, the role of steel castellated beam decreased and the role of the concrete part was increased, thus, in the designing and rehabilitating the composite floors by considering the tensile membrane action of the concrete slab, the reinforcement costs could be reduced. Moreover, the results show that the composite floors of the building were designed such that they do not collapse during the fire and lose their operation due to the considerable fire during the fire. finally, predicting the failure of the building during a fire can be investigated due to the loss of strength and stiffness of the columns and connection during the fire.

Keywords

Main Subjects

References

[1] Ada, M., Sevim, B., Yuzer, N., & Ayvaz, Y. (2018). Assessment of damages on a RC building after a big fire. Advances in concrete construction, 6(2), 177-197.
[2] Naik, T. R. (2008). Sustainability of concrete construction. Practice Periodical on Structural Design and Construction, 13(2), 98-103.
[3] Keong, N. C. (2020). assessment of externally bounded fibre reinforced polymer strengthening reinforced concrete beams at elevated temperature using finite element modelling (Doctoral dissertation, University Teknologi Malaysia).‏
[4] Hertz, K. D. (2005). Concrete strength for fire safety design. Magazine of Concrete Research, 57(8), 445-453.
[5] Lin, W. M., Lin, T. D., & Powers-Couche, L. J. (1996). Microstructures of fire-damaged concrete. Materials Journal, 93(3), 199-205.
[6] McCloud, T. S., Storz, S. A., Wylezinski, A., Reichard, R. P., & Lewit, S. M. (2019). U.S. Patent No. 10,329,763. Washington, DC: U.S. Patent and Trademark Office.‏
[7] Ye, J., Chen, W., & Wang, Z. (2017). Fire-resistance behavior of a newly developed cold-formed steel composite floor. Journal of Structural Engineering, 143(6), 04017018.‏
[8] Mohan, G. G., Upadhyay, A., & Kaushik, S. K. (2006). Assessment of longitudinal shear strength parameters of composite slab by artificial neural network. Building and housing, Volume (7), 287-300.
[9] Selamet, S., & Yolaçan, T. F. (2017). Steel Frame-Concrete Slab Composite Floor Fire Resistance Experiment. Teknik Dergi, 28(3), 8007-8022.
[10] Li, G. Q., Zhang, N., & Jiang, J. (2017). Experimental investigation on thermal and mechanical behaviour of composite floors exposed to standard fire. Fire Safety Journal, 89, 63-76.
[11] Zaharia, R. (2011). Numerical model for steel-concrete composite slab in fire, considering the membarane effect. Buletinul Institutului Politehnic din lasi. Sectia Constructii, Arhitectura, 57(3), 141.
[12] EUROPEAN COMMITTE FOR STANDARDIZATION. (2005). EN1994-1-2: Eurocode 4; design of composite steel and concrete structures-part 1-2: general rules-structural fire design.‏
[13] Nguyen, T. T., & Tan, K. H. (2017). Behaviour of composite floors with different sizes of edge beams in fire. Journal of Constructional Steel Research, 129, 28-41.
[14] Stadler, M. (2012). Design of composite slab systems in case of fire using simplified finite element analyses (Doctoral dissertation, Technische Universität München).
[15] Habibullah, A. (1992). ETABS users manual. Computers and Structures, Inc., Berkeley, California, USA.‏
[16] Manual, A. U. (2010). Dassault Systems Simulia Corporation. Providence USA.‏
[17] EN 1993-1-2. (2005). Eurocode 3: Design of Steel Structures–Part 1-2: General Rules–Structural Fire Design. British Standards Institution.‏
[18] EN 1992-1-2. (2004). Eurocode 2: Design of concrete structures-Part 1-1: General rules and rules for buildings. British Standards Institution.‏
[19] ISO, I. (1999). 834: Fire resistance tests-elements of building construction. International Organization for Standardization, Geneva, Switzerland.‏
[20] Hendy, C. R., & Smith, D. A. (2007). Designers' Guide to EN 1992-2: Eurocode 2: Design of Concrete Structures: Part 2: Concrete Bridges (Vol. 17). Thomas Telford.‏
[21] AISC Committee. (2010). Specification for structural steel buildings (ANSI/AISC 360-10). American Institute of Steel Construction, Chicago-Illinois.
[22] Kwasniewski, L., Bacinskas, D., Geda, E. & Couto, C. (2011). 2.1. Analyses of structures under fire.‏ University of Technology, Poland.
[23] Nadjai, A., Vassart, O., Ali, F., Talamona, D., Allam, A., & Hawes, M. (2007). Performance of cellular composite floor beams at elevated temperatures. Fire safety journal, 42(6-7), 489-497.

Files

History

  • Receive Date: 01 October 2020
  • Revise Date: 12 January 2021
  • Accept Date: 19 January 2021

Share

How to cite

Statistics