Comparative Study on Structural Behavior of Reinforced Concrete Straight Beam and Beams with out of Plane Parts

Document Type : Original Article

Authors

Civil Engineering Department, College of Engineering, Babylon University, Iraq

Abstract

This paper aims to experimentally investigate and compare the structural behavior of reinforced concrete straight beam and other beams there made with one, two, and three out of plane parts. The study focused on the effect of the number and location of the out plane parts on the beams mid span deflection, and rotation, as well as the ductility index, cracking loads, and failure modes. Four beams were manufactured with a cross-sectional width of 150 mm and a depth of 200 mm, and 2000 mm in length. All the beams were made with normal strength concrete and constant longitudinal reinforcement ratio 0.011 for negative and positive moment. All the beam specimens were clamped by a special steel fixed ends and subjected to the two-point load up to their failure. The obtained results presented that the load bearing capacity of straight beam was higher than the beams with out of plane parts. Furthermore, the beam with two out of plane parts has capacity higher than the beams with one and three out of plane part by 5.86%, and 55.07%. In addition, the results showed that the ductility increased with increasing number of out of plane parts by 5.52%, and 32.71% as copared with the beam with one out of plane part.

Keywords


  1. Owainati, S. A. R. "Behaviour of reinforced concrete beams under torsion, bending and shear." (1973). https://spiral.imperial.ac.uk/handle/10044/1/20540
  2. Ali, Mohamad, and A. Anis. "Strength and behaviour of reinforced concrete spandrel beams." KB thesis scanning project 2015 (1983). http://hdl.handle.net/1842/12664
  3. Kamiński, M., and W. Pawlak. "Load capacity and stiffness of angular cross section reinforced concrete beams under torsion." Archives of civil and Mechanical Engineering, Vol. 11, No. 4 (2011): 885-903. doi: 10.1016/S1644-9665(12)60085-5.
  4. ACI-ASCE Committee 445. " Report on Torsion in Structural Concrete" American Concrete Institute of the Advancing concrete knowledge, No IR12 (2013). https://www.amazon.com/ACI-445-1R-12-Torsion-Structural-Concrete-ebook/dp/B00E4VDIV4
  5. A. A., Noaman. M., Abdallah. M. A. M., Abdelrahim. M. A. A. "Behavior of R.C. Beams with Inclined Cantilever." IOSR Journal of Mechanical and Civil Engineering, Vol. 12, No. 4, (2015), 74-96. doi: 10.9790/1684-12427496
  6. Qian, Kai, and Bing Li. "Performance of three-dimensional reinforced concrete beam-column substructures under loss of a corner column scenario." Journal of Structural Engineering, 139, No. 4, (2013), 584-594. doi:10.1061/(asce)st.1943-541x.0000630. 
  7. Rafeeq, Ranj. "Torsional Strengthening of Reinforced Concrete Beams Using CFRP Composites." (2016). doi:10.15760/etd.3121. 
  8. Talaeitaba, Sayed Behzad, and Davood Mostofinejad. "Fixed supports in assessment of RC beams’ behavior under combined shear and torsion." International Journal of Applied, 1, No. 5, (2011), http://www.ijastnet.com/journals/Vol_1_No_5_September_2011/15.pdf
  9. Amulu, C. P., and C. A. Ezeagu. "Experimental and analytical comparison of torsion, bending moment and shear forces in reinforced concrete beams using BS 8110, euro code 2 and ACI 318 provisions." Nigerian Journal of Technology, 36, No. 3, (2017), 705-711. doi: 10.4314/njt.v36i3.7. 
  10. Nagendra Prasad. N and Naresh Kumar. Y, “Torsional behavior of reinforced concrete ‘L’ beam, International journal of advanced research in basic engineering science and technology, ISSN: 2456-5717, Vol. 3, Special issue 35, (2017).
  11. American Concrete Institute (ACI), ACI 318-319: building code requirements for structural concrete, Farmington Hills, (2019). doi: 10.2307/3466335.
  12. Standard, A. S. T. M. "C78. 2002. Standard test method for flexural strength of concrete (using simple beam with third point loading)." Annual Book of ASTM Standards, Vol. 4, No. 2, (2002). doi: 1520/c0078-02 
  13. Astm, C. "496/C 496M-04." Standard test method for splitting tensile strength of cylindrical concrete specimens, Vol. 4 (2004), 5. doi: 1520/c0496_c0496m-04 
  14. Dixon, Donald E., Jack R. Prestrera, George RU Burg, Subcommittee A. Chairman, Edward A. Abdun-Nur, Stanley G. Barton, Leonard W. Bell et al. "Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete (ACI 211.1-91)." (1991), 1-38. https://kashanu.ac.ir/Files/aci%20211_1_91.pdf.
  15. Brazilian Association of Technical Standards NBR 6118 2014 - Design of Concrete Structures - Procedure. Rio de Janeiro, ABNT. 2014. doi: 10.1590/s1983-41952015000400008
  16. ACI Committee. "Building code requirements for structural concrete:(ACI 318-02) and commentary (ACI 318R-02)." American Concrete Institute, 2002. https://hoseinzadeh.net/ACI-318-02.pdf
  17. Code, Price. "Eurocode 8: Design of structures for earthquake resistance-part 1: general rules, seismic actions and rules for buildings." Brussels: European Committee for Standardization (2005). https://www.phd.eng.br/wp-content/uploads/2015/02/en.1998.1.2004.pdf
  18. Shadmand, M., A. Hedayatnasab, and O. Kohnehpooshi. "Retrofitting of Reinforced Concrete Beams with Steel Fiber Reinforced Composite Jackets." International Journal of Engineering, Transactions B: Applications, 33, No. 5 (2020), 770-783. doi: 10.5829/ije.2020.33.05b.08.
  19. Punmia, B. C. Reinforced Concrete Structures I. Vol. 1. Firewall Media, 1992. https://books.google.ps/books?id=6g1fu4pRDCkC
  20. Khamees, Shahad S., Mohammed M. Kadhum, and Nameer A. Alwash. "Effect of hollow ratio and cross-section shape on the behavior of hollow SIFCON columns." Journal of King Saud University-Engineering Sciences, Vol. 33, No. 3 (2021): 166-175. doi: 10.1016/j.jksues.2020.04.001 .
  21. Kim, Sung Bae, Na Hyun Yi, Hyun Young Kim, Jang-Ho Jay Kim, and Young-Chul Song. "Material and structural performance evaluation of recycled PET fiber reinforced concrete." Cement and Concrete Composites, Vol. 32, No. 3, (2010), 232-240. doi:10.1016/j.cemconcomp.2009.11.002 .
  22. Maghsoudi, A. A., and H. Akbarzadeh Bengar. "Acceptable lower bound of the ductility index and serviceability state of RC continuous beams strengthened with CFRP sheets." Scientia Iranica, Vol. 18, No. 1, (2011), 36-44. doi: 10.1016/j.scient.2011.03.005 .
  23. Faez, A., A. Sayari, and S. Manei. "Retrofitting of RC Beams using Reinforced Self-compacting Concrete Jackets Containing Aluminum Oxide Nanoparticles." International Journal of Engineering, Transactions B: Applications, Vol. 34, No. 5, (2021), 1195-1212. doi: 10.5829/ije.2021.34.05b.13.
  24. Park, R. "Ductility evaluation from laboratory and analytical testing." In Proceedings of the 9th world conference on earthquake engineering, Tokyo-Kyoto, Japan, Vol. 8, 605-616.1988. https://www.iitk.ac.in/nicee/wcee/article/9_vol8_605.pdf.
  25. Park, Robert. "Evaluation of ductility of structures and structural assemblages from laboratory testing." Bulletin of the New Zealand Society for Earthquake Engineering, Vol. 22, No. 3, (1989), 155-166. doi: 10.5459/bnzsee.22.3.155-166. 
  26. Jaafer, Abdulkhaliq Abdulyimah. "Experimental investigation on the ferrocement slabs with a sifcon matrix." Wasit Journal of Engineering Sciences 3, No. 1, (2015), 40-54. doi: 10.31185/ejuow.vol3.iss1.34. 
  27. Goldston, Matthew, A. Remennikov, and M. Neaz Sheikh. "Experimental investigation of the behaviour of concrete beams reinforced with GFRP bars under static and impact loading." Engineering Structures, 113, (2016), 220-232. doi: 10.1016/j.engstruct.2016.01.044. 
  28. Jomaah, Muyasser M., and Diyaree J. Ghaidan. "Energy Absorption Capacity of Layered Lightweight Reinforced Concrete Beams with Openings In Web." Civil Engineering Journal, 5, No. 3, (2019), 690-701. doi: 10.28991/cej-2019-03091279 
  29. Ohno, Tomonori, and Takashi Nishioka. "An experimental study on energy absorption capacity of columns in reinforced concrete structures." Doboku Gakkai Ronbunshu, 350, (1984), 23-33. doi: 10.2208/jscej.1984.350_23. 
  30. Beer, Ferdinand P., Elwood Russell Johnston, John T. DeWolf, and David F. Mazurek. Mecânica dos materiais. Amgh, 2011.
  31. Yu, R., P. Spiesz, and H. J. H. Brouwers. "Energy absorption capacity of a sustainable Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) in quasi-static mode and under high velocity projectile impact." Cement and Concrete Composites, Vol. 68, (2016), 109-122. doi: 10.1016/j.cemconcomp.2016.02.012 
  32. Thomsen, Henrik, Enrico Spacone, Suchart Limkatanyu, and Guido Camata. "Failure mode analyses of reinforced concrete beams strengthened in flexure with externally bonded fiber-reinforced polymers.", Journal of Composites for Construction, 8, No. 2, (2004), 123-131. doi: 10.1061/(asce)1090-0268(2004)8:2(123). 
  33. Maghsoudi, A. A., and H. Akbarzadeh Bengar. "Moment redistribution and ductility of RHSC continuous beams strengthened with CFRP." Turkish Journal of Engineering and Environmental Sciences, Vol. 33, No. 1, (2009), 45-59. doi: 10.3906/muh-0901-6.
  34. Abdulraheem, Mustafa S. "Experimental investigation of fire effects on ductility and stiffness of reinforced reactive powder concrete columns under axial compression." Journal of Building Engineering, 20, (2018), 750-761. doi: 10.1016/j.jobe.2018.07.028