Experimental investigations on concrete beams reinforced with equivalent service steel pipe

Labeeb S. Al-Yassri; Munaf A. Al-Ramahee; Alaa M. Al-Khekani

doi:10.22630/PNIKS.2021.30.1.2

PDF

Published:

Mar 30, 2021

Issue

Vol. 30 No. 1 (2021)

Section

Original papers

CitedBy/Share

Labeeb S. Al-Yassri

University of Al-Qadisiyah, College of Engineering, Civil Engineering Department

Munaf A. Al-Ramahee

University of Al-Qadisiyah, College of Engineering, Civil Engineering Department

Alaa M. Al-Khekani

University of Al-Qadisiyah, College of Engineering, Civil Engineering Department

DOI: https://doi.org/10.22630/PNIKS.2021.30.1.2

Keywords : duct, flexural, opening, steel pipe, reinforced concrete beams

Abstract

Different techniques were employed for the passage of different utilities through structural elements. The reduction of the overall building weight was the main concern that needs to be achieved, especially for a multistory building. It can be done with the eliminating of a suspended ceiling with a portion of the beam’s weight by taking the advantages of the hollow sections. In this study, an equivalent reinforcement to the traditional ribbed reinforcement was employed to fabricate a reinforced concrete (RC) beam with a hollow section along the length of the beam. A steel pipe was used based on the equivalent moment from section analysis. Two diameters were selected of steel pipes as an equivalent to the commercial reinforcement. A total of four RC beams were cast and tested, two of them with traditional reinforcement and the other with steel pipe reinforcement. The comparison showed a promising result in terms of ductility, cracking pattern, ultimate strength, and mode of failure compared to the reference beam. The peak loads for the specimens with steel pipe were 160.6 kN and 184 kN, while they were 192 kN and 203.5 kN for the beams with traditional reinforcement.

How to Cite

Al-Yassri, L. S., Al-Ramahee, M. A., & Al-Khekani, A. M. (2021). Experimental investigations on concrete beams reinforced with equivalent service steel pipe. Scientific Review Engineering and Environmental Sciences (SREES), 30(1), 16–28. https://doi.org/10.22630/PNIKS.2021.30.1.2

References

Al-Khekany, A.M., Al-Yassri, L.S. & Abbas, H.S. (2018). An experimental investigation of hollow composite column reinforced by multi-skin square and round steel tube. International Journal of Civil Engineering and Technology, 9(11), 784-793.

Al-Yassri, L.S., Al-Khekany, A.M. & Abbas, H.S. (2018). Experimental study of replacement the tension reinforcing bars in concrete beams by steel pipes. International Journal of Engineering and Technology, 7(4.20), 229-234.

American Concrete Institute [ACI] (2014). Building Code Requirements for Structural Concrete and Commentary (ACI 318-14). Farmington Hills (MI): American Concrete Institute.

Amin, H.M., Agarwal, V.C. & Aziz, O.Q. (2013). Effect of opening size and location on the shear strength behavior of RC deep beams without web reinforcement. International Journal of Innovative Technology and Exploring Engineering, 3(7), 28-30.

Arya, C. (2009). Eurocode 2: Design of concrete structures. In Design of Structural Elements. (pp. 314-374). New York: Taylor & Francis.

Ashour, A.F. & Rishi, G. (2000). Tests of reinforced concrete continuous deep beams with web openings. Structural Journal, 97(3), 418-426.

Campione, G. & Minafò, G. (2012). Behaviour of concrete deep beams with openings and low shear span-to-depth ratio. Engineering Structures, 41, 294-306.

Canadian Standards Association [CSA] (2004). Design of concrete structures (CSA A23.3- -04). Mississauga, Ontario: Canadian Standards Association.

Central Organization for Standardization and Quality Control [COSQC] (1984a). Portland cement (IQS 5/1984). Baghdad: Central Organization for Standardization and Quality Control.

Central Organization for Standardization and Quality Control [COSQC] (1984b). Aggregates from natural sources for concrete and building construction (IQS 45/1984). Baghdad: Central Organization for Standardization and Quality Control.

Hasnat, A. & Akhtanizzamam, A.A. (1987). Beams with small rectangular opening under torsion, bending, and shear. Journal of Structural Engineering, 113(10), 2253-2270.

Herrera, L., Anacleto-Lupianez, S. & Lemnitzer, A. (2017). Experimental performance of RC moment frame beams with rectangular openings. Engineering Structures, 152, 149-167.

Makki, R.F., Jassem, A.T. & Jassem, H.A.A.L. (2018). Non-linear analysis of Reactive Powder Concrete (RPC) deep beams with openings strengthened by CFRP. Al-Qadisiyah Journal for Engineering Sciences, 11(2), 176-196.

Mansur, M.A., Tan, K.H. & Lee, S.L. (1984). Collapse loads of R/C beams with large openings. Journal of Structural Engineering, 110(11), 2602-2618.

Prentzas, E. (1968). Behavior and reinforcement of concrete beams with large rectangular apertures. Sheffield: University of Sheffield.

Sethunarayanan, R. (1960). Ultimate strength of pre-tensioned I-beams in combined bending and shear. Magazine of Concrete Research, 12(35), 83-90.

Somes, N.F. & Corley, W.G. (1974). Circular openings in webs of continuous beams. Special Publication, 42, 359-398.

Yang, K.H., Eun, H.C. & Chung, H.S. (2006). The influence of web openings on the structural behavior of reinforced high-strength concrete deep beams. Engineering Structures, 28(13), 1825-1834.