Flexural behavior of RC beams with regular square or circular web openings

AYKAÇ B., KALKAN İ., AYKAÇ S., Egriboz Y. E.

ENGINEERING STRUCTURES, vol.56, pp.2165-2174, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56
  • Publication Date: 2013
  • Doi Number: 10.1016/j.engstruct.2013.08.043
  • Journal Name: ENGINEERING STRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2165-2174
  • Keywords: Web opening, Web reinforcement, Diagonal reinforcement, Reinforced concrete beam with openings, Vierendeel truss, REINFORCED-CONCRETE BEAMS, DEEP BEAMS, STRENGTH, DESIGN, TESTS
  • Gazi University Affiliated: Yes

Abstract

This paper presents a study aimed at investigating the influence of multiple web openings along the length of an RC beam on its flexural behavior. A total of nine rectangular beams were tested. Diagonal reinforcement around openings effectively prevented premature failure of some specimens due to Vierendeel action, the expected failure mode according to bending moment-axial force interaction diagrams. Longitudinal rebars and full-depth stirrups adjacent to openings and short stirrups in the chords prevented beam-type and frame-type shear failures. The length of the plastic failure mechanism increased in the presence of multiple openings compared to beams with a single opening. (C) 2013 Elsevier Ltd. All rights reserved.