THE BEHAVIOR OF CONCRETE SMALL FLAT PLATE REINFORCED WITH DIFFERENT RATIOS OF STEEL FIBER

Yıl 2024, Cilt: 8 Sayı: 2, 249 - 263, 31.12.2024

Raghad Ali Al-saadı

https://doi.org/10.53600/ajesa.1199412

Öz

Due to the experimental nature of the investigation, it is not possible to quantify the punching shear transfer mechanisms. In addition, these calculations do not account for the impact of fiber length, fiber shape, or fiber length-to-diameter ratio on the punching shear resistance of slabs. These factors have a major effect on the binding strength of steel fibers in concrete, which has an effect on the strength of the concrete, which affects the punching shear capacity of SFRC slabs. In the case of thin slabs with a large span-to-thickness ratio, flexural deformation dominates the slab's behavior. In this study, the modal features of small-scaled concrete slab models were explored using the commercial program ANSYS 16 and compared to earlier studies. The ANSYS results revealed that the geometry model used to perform a mode shape animation is animatable. This study examines the deformation differences between two types of SFRC and the influence of these changes on slabs. The final finding was that the addition of steel fibers considerably improves the punching and shear resistance of the slabs. Utilizing steel fibers with a fiber volume between 30 and 60 kg/m3 increases the punching shear resistance of the slabs in direct proportion to the fiber volume.

Anahtar Kelimeler

Small Plate Slabs, Crimped Steel Fibres, Hooked End Steel Fibres

Kaynakça

• Bashandy, Alaa, Fatma Eid, Mohammed Arab, and Ahmed Elkassas. 2022. “Resisting Punching Shear of Flat Slab.” International Journal of Advanced Research in Engineering & Technology 9(February):19019.
• Bompa, D. V., and A. Y. Elghazouli. 2016. “Structural Performance of RC Flat Slabs Connected to Steel Columns with Shear Heads.” Engineering Structures 117(May):161–83. doi: 10.1016/j.engstruct.2016.03.022.
• Borkar, Shital, Kuldeep Dabhekar, Isha Khedikar, and Santosh Jaju. 2021. “Analysis of Flat Slab Structures in Comparison with Conventional Slab Structures.” IOP Conference Series: Earth and Environmental Science 822(1). doi: 10.1088/1755-1315/822/1/012049.
• Borkar, Shital, Kuldeep Dabhekar, Isha Khedikar, and Nalini Vaidya. 2021. “Review on ‘Comparative Study of Flat Slab Structure and Conventional Slab Structure.’” IOP Conference Series: Materials Science and Engineering 1197(1):012072. doi: 10.1088/1757-899x/1197/1/012072.
• Ilshat, Mirsayapov, Nikitin Georgy, and Khanbekov Midkhat. 2020. “Strength of Reinforced Concrete Flat Slabs for Punching.” IOP Conference Series: Materials Science and Engineering 890(1). doi: 10.1088/1757-899X/890/1/012076.
• Kearns, C. F., and G. M. McConnell. 1989. “Structural Behaviour of Thin Planar and Curved Microconcrete Plates Reinforced Conventionally and with Steel Fibres.” Materials and Structures 22(5):357–63. doi: 10.1007/BF02472506.
• Lu, Shasha, Mohammadreza Koopialipoor, Panagiotis G. Asteris, Maziyar Bahri, and Danial Jahed Armaghani. 2020. “A Novel Feature Selection Approach Based on Tree Models for Evaluating the Punching Shear Capacity of Steel Fiber-Reinforced Concrete Flat Slabs.” Materials 13(17). doi: 10.3390/ma13173902.
• Nassim, Kernou, Youcef Bouafia, and Belakhdar Khalil. 2015. “Reliability and Punching Shear Resistance of Slabs in Non Linear Domain.” Gradjevinar 67(11):1051–62. doi: 10.14256/JCE.1295.2015.
• Petkevicius, Mindaugas, and Juozas Valivonis. 2010. “Analysis of Bending Capacity of Composite Steel-Concrete Slabs with Steel Fiber Reinforced Concrete.” 10th International Conference Modern Building Materials, Structures and Techniques (October):744–51.
• Samsudin, Amir Syafiq, Mohd Hisbany Mohd Hashim, Siti Hawa Hamzah, and Afidah Abu Bakar. 2018. “Bending Strength of Steel Fibre Reinforced Concrete Ribbed Slab Panel.” Scientific Research Journal 15(1):15. doi: 10.24191/srj.v15i1.9353.
• Sucharda, Oldrich, Martina Smirakova, Jana Vaskova, Pavlina Mateckova, Jan Kubosek, and Radim Cajka. 2018. “Punching Shear Failure of Concrete Ground Supported Slab.” International Journal of Concrete Structures and Materials 12(1). doi: 10.1186/s40069-018-0263-6.
• Zinn, Rainer, Michael Borgerhoff, Friedhelm Stangenberg, Christian Schneeberger, Javier Rodríguez, Luis Lacoma, Francisco Martínez, and Joaquín Martí. 2014. “Analysis of Combined Bending and Punching Tests of Reinforced Concrete Slabs within IMPACT III Project.” Proceedings of the International Conference on Structural Dynamic , EURODYN 2014-Janua(August 2015):3533–40.