AUTOSTRESS PRINCIPLES FOR BEAMS WITH WEB OPENINGS

Recently, the concept of autostresses was developed for unifying the elastic and plastic design of steel structures, autostresses being the residual stresses that occur during the initial application of load as a result of localized yielding. The present design methods of steel beams with web openings were re-examined using autostress principles. This showed that the present plastic-design equations for beams with web openings permit live load only when the opening is in a region of pure bending. When the opening is in a shear span, the factored shear force and factored bending moment at the opening must be reduced to conservative (and probably uneconomical) values before live loads can be permitted, according to autostress principles. Therefore, new plastic-design equations were derived which lead to admissible autostresses and permissible live loads at all moment-shear ratios. /Author/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • BOWER, J E
• Publication Date: 1977-7

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 14-5-18
• Serial:
  • Journal of the Structural Division
  • Volume: 103
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Bending; Live loads; Residual stress; Shear stress; Ultimate load design; Webbing
• Uncontrolled Terms: Shear forces; Steel beams
• Old TRIS Terms: Shear span; Yield
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00165352
• Record Type: Publication
• Report/Paper Numbers: ASCE 13089 Proceeding
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM