Assessment of punching shear capacity of reinforced concrete flat slabs with openings based on selected theoretical studies
Email:
quannh_ktxd@utc.edu.vn
Từ khóa:
Flat slabs; punching shear; slab openings; analytical model; empirical models
Tóm tắt
Reinforced concrete (RC) flat slabs are widely used in modern construction due to their architectural flexibility and construction efficiency. However, the presence of openings near columns can significantly reduce punching shear capacity and increase the risk of brittle failure. This study evaluates the predictive accuracy of existing methods by comparing seven international design codes (ACI 318-19, Eurocode 2, BS 8110-1997, TS500, ECP 203-2018, NBR 6118, and JSCE) with one analytical model, namely Model Code 2010 (MC2010) and three empirical models developed by Teng, El-Shafiey, and Köroğlu. The calculated results are validated against two independent experimental datasets reported by Anil et al. and El-Shafiey et al. The results reveal significant inconsistencies among the methods. For the Anil dataset, the Vexp/Vcal ratio ranges from 0.57 to 1.09 and is predominantly below 1.0, indicating a tendency toward unconservative predictions. In contrast, for the El-Shafiey dataset, the ratio varies between 0.93 and 1.26, reflecting a more conservative trend. Notably, the mean deviation reaches up to 88.33% for MC2010 (LoA-II), highlighting the limitations of current approaches. These findings indicate that the conventional critical perimeter reduction approach fails to fully capture the combined effects of opening location, size, and shape on stress distribution and load transfer mechanisms. Therefore, there is a clear need to develop new predictive models with a stronger mechanical basis that explicitly incorporate the geometric characteristics of openings.Tài liệu tham khảo
[1]. R. Z. Al-Rousan, B. R. Alnemrawi, Punching shear code provisions examination against the creation of an opening in existed RC flat slab of various sizes and locations, Structures, 49 (2023), 875-888. https://doi.org/10.1016/j.istruc.2023.02.007
[2]. K.-K. Choi, G. T. Truong, S.-D. Kim, I.-R. Choi, Punching shear behaviour of shear reinforced concrete slabs, Proceedings of the Institution of Civil Engineers - Structures and Buildings, 168 (2015) 402-420.
[3]. Ö. Anil, T. Kina, V. Salmani, Effect of opening size and location on punching shear behaviour of two-way RC slabs, Magazine of Concrete Research, 66 (2014) 955-966.
[4]. T. Ha, M. Lee, J. Park, D. Kim, Effects of openings on the punching shear strength of RC flat‐plate slabs without shear reinforcement, Structural Design Tall Build, 24 (2015) 895-911. https://doi.org/10.1002/tal.1217
[5]. F. Brantschen, Influence of bond and anchorage conditions of the shear reinforcement on the punching strength of RC slabs, Switzerland: Ecole Polytechnique Federale de Lausanne, 2016. https://doi.org/10.5075/epfl-thesis-7315
[6]. H. M. Elsanadedy, Y. A. Al-Salloum, S. H. Alsayed, Prediction of punching shear strength of HSC interior slab-column connections, KSCE Journal of Civil Engineering, 17 (2013) 473-485. https://doi.org/10.1007/s12205-013-1971-8
[7]. Ö. Mercimek, Y. Erbaş, S. T. Akkaya, Ö. Anıl, M. Fener, Evaluation of punching strength of RC flat slabs with openings with different positions, size, and number: Experimental, analytical, and superposition approaches, Case Studies in Construction Materials, 20 (2024) e02691. https://doi.org/10.1016/j.cscm.2023.e02691
[8]. T. F. El-Shafiey, A. M. Atta, A. Hassan, M. Elnasharty, Effect of opening shape, size and location on the punching shear behaviour of RC flat slabs, Structures, 44 (2022) 1138-1151. https://doi.org/10.1016/j.istruc.2022.08.076
[9]. A. Elsayed, M. Elsayed, D. M. Saad, Punching shear behavior of RC flat plate with openings rested on coupled columns, Conference: 114th IASTEM International Conference, Stockholm, Sweden, (2018) 7-13.
[10]. T. F. EL-Shafiey, M. Hussein, M. A. Abdel-Aziz, Behaviour of flat slabs with openings adjacent to columns, Conference: Structural faults & repair-2012 14th International Conference At: Concrete Behaviour Part (CB) CB-AZIZ code, 2 (2012).
[11]. European Committee for Standardization, BS EN 1992-1-1:2004 - Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings, Brussels, 2004.
[12]. S. Bursać, M. Bešević, M. Vojnić Purčar, L. Kozarić, N. Đurić, Experimental analysis of punching shear strength of eccentrically loaded slab with the opening along the face of the internal column, Engineering Structures, 249 (2021) 113359. https://doi.org/10.1016/j.engstruct.2021.113359
[13]. ACI Committee 318, ACI 318-19(22): Building Code Requirements for Structural Concrete and Commentary (Reapproved 2022), American Concrete Institute, Farmington Hills, MI, 2019. https://doi.org/10.14359/51716937
[14]. British Standards Institution, BS 8110-1:1997 - Structural use of concrete. Code of practice for design and construction, London, 1997.
[15]. Turkish Standards Institution, TS 500:2000 - Requirements for design and construction of reinforced concrete structures, Ankara, 2000.
[16]. Japan Society of Civil Engineers, JSCE Standard specifications for concrete structures - 2007: Structural performance verification, Tokyo, 2007.
[17]. Ministry of Housing, Utilities and Urban Communities, ECP 203-2018 - Egyptian code for design and construction of reinforced concrete structures, Cairo, 2018.
[18]. Brazilian Association of Technical Standards, ABNT NBR 6118:2014 - Design of concrete structures - Procedures, Rio de Janeiro, 2014.
[19]. Tiêu chuẩn Quốc gia Việt Nam, TCVN 5574:2018 - Thiết kế kết cấu bê tông và bê tông cốt thép, Bộ xây dựng, 2018.
[20]. Fédération Internationale du Béton, fib Model Code for Concrete Structures 2010, fib Bulletin No. 65, Lausanne, 2012.
[21]. Susanto Teng, H. K. Cheong, J. Z. Geng, K. L. Kuang, Punching Shear Strength of Slabs with Openings and Supported on Rectangular Columns, SJ, 101 (2004). https://doi.org/10.14359/13390
[22]. E. Ö. Köroğlu, Ö. Anil, M. Hatem, Empirical Punching Shear Capacity Equation for Reinforced Concrete Two-way Slabs with Openings, Period. Polytech. Civil Eng., 68 (2024) 1149-1174. https://doi.org/10.3311/PPci.23399
[2]. K.-K. Choi, G. T. Truong, S.-D. Kim, I.-R. Choi, Punching shear behaviour of shear reinforced concrete slabs, Proceedings of the Institution of Civil Engineers - Structures and Buildings, 168 (2015) 402-420.
[3]. Ö. Anil, T. Kina, V. Salmani, Effect of opening size and location on punching shear behaviour of two-way RC slabs, Magazine of Concrete Research, 66 (2014) 955-966.
[4]. T. Ha, M. Lee, J. Park, D. Kim, Effects of openings on the punching shear strength of RC flat‐plate slabs without shear reinforcement, Structural Design Tall Build, 24 (2015) 895-911. https://doi.org/10.1002/tal.1217
[5]. F. Brantschen, Influence of bond and anchorage conditions of the shear reinforcement on the punching strength of RC slabs, Switzerland: Ecole Polytechnique Federale de Lausanne, 2016. https://doi.org/10.5075/epfl-thesis-7315
[6]. H. M. Elsanadedy, Y. A. Al-Salloum, S. H. Alsayed, Prediction of punching shear strength of HSC interior slab-column connections, KSCE Journal of Civil Engineering, 17 (2013) 473-485. https://doi.org/10.1007/s12205-013-1971-8
[7]. Ö. Mercimek, Y. Erbaş, S. T. Akkaya, Ö. Anıl, M. Fener, Evaluation of punching strength of RC flat slabs with openings with different positions, size, and number: Experimental, analytical, and superposition approaches, Case Studies in Construction Materials, 20 (2024) e02691. https://doi.org/10.1016/j.cscm.2023.e02691
[8]. T. F. El-Shafiey, A. M. Atta, A. Hassan, M. Elnasharty, Effect of opening shape, size and location on the punching shear behaviour of RC flat slabs, Structures, 44 (2022) 1138-1151. https://doi.org/10.1016/j.istruc.2022.08.076
[9]. A. Elsayed, M. Elsayed, D. M. Saad, Punching shear behavior of RC flat plate with openings rested on coupled columns, Conference: 114th IASTEM International Conference, Stockholm, Sweden, (2018) 7-13.
[10]. T. F. EL-Shafiey, M. Hussein, M. A. Abdel-Aziz, Behaviour of flat slabs with openings adjacent to columns, Conference: Structural faults & repair-2012 14th International Conference At: Concrete Behaviour Part (CB) CB-AZIZ code, 2 (2012).
[11]. European Committee for Standardization, BS EN 1992-1-1:2004 - Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings, Brussels, 2004.
[12]. S. Bursać, M. Bešević, M. Vojnić Purčar, L. Kozarić, N. Đurić, Experimental analysis of punching shear strength of eccentrically loaded slab with the opening along the face of the internal column, Engineering Structures, 249 (2021) 113359. https://doi.org/10.1016/j.engstruct.2021.113359
[13]. ACI Committee 318, ACI 318-19(22): Building Code Requirements for Structural Concrete and Commentary (Reapproved 2022), American Concrete Institute, Farmington Hills, MI, 2019. https://doi.org/10.14359/51716937
[14]. British Standards Institution, BS 8110-1:1997 - Structural use of concrete. Code of practice for design and construction, London, 1997.
[15]. Turkish Standards Institution, TS 500:2000 - Requirements for design and construction of reinforced concrete structures, Ankara, 2000.
[16]. Japan Society of Civil Engineers, JSCE Standard specifications for concrete structures - 2007: Structural performance verification, Tokyo, 2007.
[17]. Ministry of Housing, Utilities and Urban Communities, ECP 203-2018 - Egyptian code for design and construction of reinforced concrete structures, Cairo, 2018.
[18]. Brazilian Association of Technical Standards, ABNT NBR 6118:2014 - Design of concrete structures - Procedures, Rio de Janeiro, 2014.
[19]. Tiêu chuẩn Quốc gia Việt Nam, TCVN 5574:2018 - Thiết kế kết cấu bê tông và bê tông cốt thép, Bộ xây dựng, 2018.
[20]. Fédération Internationale du Béton, fib Model Code for Concrete Structures 2010, fib Bulletin No. 65, Lausanne, 2012.
[21]. Susanto Teng, H. K. Cheong, J. Z. Geng, K. L. Kuang, Punching Shear Strength of Slabs with Openings and Supported on Rectangular Columns, SJ, 101 (2004). https://doi.org/10.14359/13390
[22]. E. Ö. Köroğlu, Ö. Anil, M. Hatem, Empirical Punching Shear Capacity Equation for Reinforced Concrete Two-way Slabs with Openings, Period. Polytech. Civil Eng., 68 (2024) 1149-1174. https://doi.org/10.3311/PPci.23399
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Nhận bài
01/05/2026
Nhận bài sửa
27/07/2026
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07/09/2026
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15/09/2026
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Kiểu trích dẫn
Nguyen Quang, S., Le Dang, D., Nguyen Xuan, H., & Nguyen Hoang, Q. (1789405200). Assessment of punching shear capacity of reinforced concrete flat slabs with openings based on selected theoretical studies. Tạp Chí Khoa Học Giao Thông Vận Tải, 77(7), 914-928. https://doi.org/10.47869/tcsj.77.7.3
