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Numerical Investigation of Concrete Beams Reinforced with Perforated Plates

Hosseinzadeh, Ali | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51218 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. In this study, the flexural behavior of simple concrete beams with rectangular section (depth 20cm and width 18 cm) reinforced with perforated steel plates is evaluated. Perforated steel plates are used as an alternative for steel bars in the tension region. Because of special geometry, these plates are more integrated with surrounding concrete as compared with steel rebars. The holes in the plates caused local confinement on the surrounding concrete. Concrete beams are modeled with different number of perforated steel plates (one or two or four layer) in Abaqus software. Also beams with different patch lengths are modeled to evaluate patch length of perforated steel plates. Results of numerical models have been verfied with the experimental result of refrences. In the next step, a rectangular beam(depth 20 cm and width 15 cm) reinforced with steel rebar wich experimentally evaluated in the refrences have been modeled and verifid in abaqus. Then in the verified model, concrete beam of this study (18×20) modeled but reinforced with steel rebar. The cross section of the rebars is equal to the average area of the perforated plate. Eventually the value of bending moments, curvature and ductility in the numerical model(reinforced with rebar and plate) and laboratory results are compared with the values suggested by ACI318-14 for steel rebars. Results indicate that perforated steel plates increase the section capacity by more than two times, Also increase the ductility up 2.5 times as compared with concrete beam reinforced with equal rebars. Also the volume of steel consumed by the perforate plate during the overlap length is about half the volume of steel consumed by the rebar
  9. Keywords:
  10. Verification ; Ductility ; Perforated Steel Plates ; Local Confinement ; Bending Capacity

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