ConfOrganizer 

Exploring the Impact of Concrete Panel Thickness on Post-Fire Shear Capacity of Composite Shear Walls: A Numerical Investigation

•   Mr. Mahdi Rezaee ,  Ferdowsi University of Mashhad ,   
•   Nima Gharaeimighaddam ,  PhD of Structural Engineering, School of Engineering, Ferdowsi University of Mashhad ,   
•   Dr. Mansour Ghalehnovi ,  Professor, Civil Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran ,   

Major Topic: composite structures سازه‌‌های مرکب

Abstract

This paper presents an investigation into the influence of concrete panel thickness (CPT) on the post-fire behavior of composite steel plate shear walls (CSPSW). The concrete panel (CP) within the CSPSW serves a crucial role in augmenting the shear capacity of this lateral-resisting system by mitigating out-of-plane buckling of the steel plate. However, a fundamental inquiry arises: does this component contribute to enhancing the shear capacity of the steel plate (SP) by mitigating fire-induced damage? To address this question, a series of numerical CSPSW models at a scale of 1:3 were developed, featuring varying CPTs of 80, 100, 120, 150, and 200 mm, and subsequently subjected to cyclic loading following 2 hours of fire exposure. Fire simulations were conducted utilizing coupled temperature-displacement analysis, and subsequent to adjustments in mechanical properties due to fire exposure, the CSPSWs underwent cyclic quasi-static loading. The findings indicate that the CP effectively functions as a protective cover for the SP owing to the low thermal conductivity of concrete. Notably, an increase in CPT from 120 mm to 200 mm resulted in a significant enhancement of the final post-fire shear capacity, exhibiting a 48.70% increase.

Keywords

Composite steel plate shear wall; Fire; Thermal analysis; Quasi-static analysis; Abaqus

• First Innovative Investigation to Simulate Post-Fire Behavior of CSPSW
• Astonishing Verification to Experimental Specimen with Error Less Than 3%
• Feasible Conclusion for Building Industry Based on Research

1. ASTM International. (1988). Standard Test Methods for Fire Tests of Building Construction and Materials (ASTM E119). West Conshohocken, PA: ASTM International.

2. International Organization for Standardization. (1999). ISO 834-1, Fire-resistance tests—elements of building construction—part 1: general requirements. Geneva, Switzerland: International Organization for Standardization.

3. Zhao, Q., & Astaneh-Asl, A. (2004). Cyclic behavior of traditional and innovative composite shear walls. Journal of Structural Engineering, 130(2), 271-284.

4. Guo, L., Rong, Q., Ma, X., & Zhang, S. (2013). Analysis of composite steel plate shear walls connected with frame beams only. Proceedings of the Institution of Civil Engineers-Structures and Buildings, 166(9), 507-518.

5. Hitaka, T., & Jacobsen, A. (2011). Cyclic Tests on RC-Steel Shear Plate Composite Wall System Applicable in Beam Spans with Large Openings. In Composite Construction in Steel and Concrete VI (pp. 466-478).

6. Rahnavard, R., Hassanipour, A., & Mounesi, A. (2016). Numerical study on important parameters of composite steel-concrete shear walls. Journal of Constructional Steel Research, 121, 441-456.

7. Hatami, F., Rahai, A., & Hoseinzadeh, L. (2009). Optimization of concrete/steel thickness ratio in composite steel plate shear walls (CSSWs). Computer Aided Optimum Design in Engineering XI, 106, 173.

8. Gharaei-Moghaddam, N., Meghdadian, M., & Ghalehnovi, M. (2023). Innovations and advancements in concrete-encased steel shear walls: A comprehensive review. Results in Engineering, 101351.

9. Hao, T., Cao, W., Qiao, Q., Liu, Y., & Zheng, W. (2017). Structural performance of composite shear walls under compression. Applied Sciences, 7(2), 162.

10. Meghdadaian, M., & Ghalehnovi, M. (2019). Improving seismic performance of composite steel plate shear walls containing openings. Journal of Building Engineering, 21, 336-342.

11. Wang, D., Zhang, Y., Zhu, Y., Wu, C., Zhou, Y., & Han, Q. (2021). Mechanical performance of sustainable modular prefabricated composite shear panels under cyclic loading. Journal of Constructional Steel Research, 179, 106423.

12. Xie, Q., Xiao, J., Xie, W., & Gao, W. (2019). Cyclic tests on composite plate shear walls–concrete encased before and after fire exposure. Advances in Structural Engineering, 22(1), 54-68.

13. European Committee for Standardization. (2004). Eurocode 2: Design of concrete structures—Part 1.1: General rules and rules for buildings (Publication No. EN 1992-1-1). Brussels, Belgium: Author.

14. European Committee for Standardisation. (2007). Eurocode 3: Design of steel structures-part 1-2: General rules-structural fire design (Publication No. EN 1993-1-2). London: Author.

15. Tao, Z., Wang, X. Q., & Uy, B. (2013). Stress-strain curves of structural and reinforcing steels after exposure to elevated temperatures. Journal of Materials in Civil Engineering, 25(9), 1306-1316.

16. Lin, C. H., Chen, S. T., & Yang, C. A. (1995). Repair of fire-damaged reinforced concrete columns. Structural Journal, 92(4), 406-411.

17. ASCE Committee on Fire Protection. (1992). Structural Fire Protection. New York, NY: American Society of Civil Engineers.

18. Izzuddin, B. A., Elghazouli, A. Y., & Tao, X. Y. (2002). Realistic modelling of composite floor slabs under fire conditions. In Proc., 15th ASCE Engineering Mechanics Conf.

19. Maison, B. F., & Speicher, M. S. (2016). Loading protocols for ASCE 41 backbone curves. Earthquake Spectra, 32(4), 2513-2532.