An ultimate strength analysis of composite beams with unreinforced, rectangular web openings is presented. The analysis is developed for general beam geometry and material properties, and for a single web opening of any practical depth, width and location. The beneficial effects of strain hardening and the shear contribution of the slab are neglected, and a four hinge failure mechanism at the opening is assumed. Analytical results indicate that a composite section with a web opening has a significantly higher bending strength than the corresponding noncomposite section, and that variations in opening length, height and eccentricity can have a significant effect on the ultimate strength. Comparison of the analytical results with the limited experimental data available indicates that the theory provides a very conservative estimate of the ultimate strength. The discrepancy between theory and test results is attributed primarily to strain hardening and the shear contribution of the slab. (ASCE)

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • Todd, D M
    • Cooper, P B
  • Publication Date: 1980-2

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 431-444
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00310724
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 15179
  • Files: TRIS
  • Created Date: Oct 8 1980 12:00AM