Behavior of Reinforced Concrete Beams with Vertically Penetrated Holes across the Cross ‐ Sectional Depth

Authors

  • ‪Aws Yaseen‬‏ Khadhair Department of Civil Engineering, College of Engineering, University of Baghdad, Iraq
  • Amer F. Izzet Department of Civil Engineering, College of Engineering, University of Baghdad, Iraq
Volume: 14 | Issue: 3 | Pages: 14301-14307 | June 2024 | https://doi.org/10.48084/etasr.7192

Abstract

In Iraq and other countries, RC beams are frequently used as alternative small slab penetrations in low-rise constructions. The structure is capable of transferring stresses effectively and the existence of minor gaps normally has little impact on the structural performance. However, special consideration must be given to the analysis and design of such beams depending on the effect of the openings. Hence, the objective of this paper is to address this research gap by evaluating and enhancing the behavior of RC beams with a vertical opening that penetrates the entire depth of the beams and obstructs the reinforcement bars since all the building design codes and guidelines introduce very limited recommendations for beams with vertical openings. To achieve that, five specimens were fabricated as RC beams with vertical openings and one specimen as a reference beam. The six specimens were tested under two-point loads over a clear span length of 180 cm and a total length of 200 cm. It was found that by adopting a vertical opening into the RC beam without any strengthening methods, the ultimate carrying load capacity decreased and the mid-span deflection increased compared with the reference solid beam.

Keywords:

vertically penetrated holes, reinforced concrete beam, vertical opening

Downloads

Download data is not yet available.

References

F. El Ame, J. N. Mwero, and C. K. Kabubo, "Οpenings Effect on the Performance of Reinforced Concrete Beams Loaded in Bending and Shear," Engineering, Technology & Applied Science Research, vol. 10, no. 2, pp. 5352–5360, Apr. 2020.

A. S. Hamzah and A. Y. Ali, "Shear Behavior of Reinforced Concrete Beams with Vertical and Transverse Openings," Test engineering & management, vol. 83, pp. 22120–22133, Apr. 2020.

O. Enochsson, J. Lundqvist, B. Täljsten, P. Rusinowski, and T. Olofsson, "CFRP strengthened openings in two-way concrete slabs – An experimental and numerical study," Construction and Building Materials, vol. 21, no. 4, pp. 810–826, Apr. 2007.

J. Schlaich, K. Schafer, and M. Jennewein, "Toward a Consistent Design of Structural Concrete, " PCI Journal, vol. 32, no. 3, pp. 74–150, May 1987.

M. B. Dawood and R. A. Al-Jazaeri, "Shear Behavior of Reinforced ConcreteT-Beams with Openings in Flange and Strengthened by CFRPLaminates," Journal of Babylon University/Engineering Sciences, vol. 22, no. 2, Jan.2014.

M. A. J. Hassan and A. F. Izzet, "Serviceability of Reinforced Concrete Gable Roof Beams with Openings under Static Loads, " Engineering, Technology & Applied Science Research, vol. 9, no. 5, pp. 4813–4817, Oct. 2019.

R. Abbas and I. Hussein, "Prestressing Effects on Full Scale Deep Beams with Large Web Openings¨: An Experimental and Numerical Study," Engineering, Technology & Applied Science Research, vol. 12, no. 1, pp. 8193–8198, Feb. 2022.

A. H. Aziz and A. E. Ajeel, "Effect of Existing Flange Openings and Cold Joints on Strength of RC T-Beams, " Journal of Engineering, vol. 16, no. 01, pp. 4535–4546, Apr. 2010.

R. J. C. Silva, M. B. S. Muniz, É. M. F. Lima, F. E. S. D. Silva Júnior, and C. V. D. S. Araújo, "Experimental analysis of reinforced concrete beams strengthened with steel bars and epoxy structural adhesive," Revista ALCONPAT, vol. 9, no. 1, pp. 65–78, Dec. 2018.

Y. Shen, L. Lin, and Z. Feng, "Finite element analysis of reinforced concrete beams with openings in the abdomen and strengthened with steel sleeves based on ANSYS, " E3S Web of Conferences, vol. 198, 2020, Art. no. 01028.

T. Liu, S. Chen, Z. Feng, and H. Liu, "Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading," Advances in Civil Engineering, vol. 2020, pp. 1–15, Feb. 2020.

M. Kaleemullah and M. A. Bahobail, "Phenomenon of Penetration of Vertical Pipes into the Horizontal Members of Concrete Structure," Journal of Architecture and Planning, vol. 32, no. 2, pp. 301–315, 2020.

A. I. Al-Negheimish, A. B. Shuraim, and A. S. Al-Tayyar, "Structural Design Practice for Residential Buildings in Riyadh, " in The 6th Saudi Engineering Conference, KFUPM, Dharan, Dec. 2002, vol. 3.

H. A. Abdalla, A. M. Torkey, H. A. Haggag, and A. F. Abu-Amira, "Design against cracking at openings in reinforced concrete beams strengthened with composite sheets," Composite Structures, vol. 60, no. 2, pp. 197–204, May 2003.

A. Kheyroddin and H. Naderpour, "Plastic Hinge Rotation Capacity of Reinforced Concrete Beams," International Journal of Civil Engineering, vol. 5, no. 1, Mar. 2017.

B. Ayac, S. Aykaç, I. Kalkan, B. Dundar, and H. Can, "Flexural Behavior and Strength of Reinforced Concrete Beams with Multiple Transverse Openings," ACI Structural Journal, vol. 111, no. 2, 2014.

Downloads

How to Cite

[1]
‪Aws Y. Khadhair and A. F. Izzet, “Behavior of Reinforced Concrete Beams with Vertically Penetrated Holes across the Cross ‐ Sectional Depth”, Eng. Technol. Appl. Sci. Res., vol. 14, no. 3, pp. 14301–14307, Jun. 2024.

Metrics

Abstract Views: 112
PDF Downloads: 53

Metrics Information