MODELING OF STEEL-CONCRETE COMPOSITE BEAMS UNDER NEGATIVE BENDING

Negative bending moments acting in the support regions of continuous composite beams generate tensile stresses in the concrete slab and compressive stresses in the lower steel profile. As a result, the mechanical behavior of these beams is strongly nonlinear even for low stress levels, not only because of the slip at the beam-slab interface, but also because of cracking in the slab. Therefore, an adequate theoretical modeling should take account of the interactions between the structural steel and the concrete slab by shear connectors and also between steel rebars and concrete in tension by bond phenomenon. In this paper, a model of steel and concrete composite beams subjected to negative bending is presented. It accounts for the slip occurring at both the beam-slab interface and the steel reinforcement-concrete interface. Some numerical results, obtained using a suitable numerical procedure, are discussed to show the capacity of the model.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Manfredi, G
  • Fabbrocino, G
  • Cosenza, E
• Publication Date: 1999-6

Language

• English

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 654-662
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 125
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Beams; Bending moments; Bond strength (Materials); Composite construction; Compressive strength; Concrete; Cracking; Deflection; Kinematics; Mathematical models; Nonlinear equations; Reinforcing bars; Reinforcing steel; Slabs; Steel; Structural analysis; Structural steel; Tensile strength
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00765103
• Record Type: Publication
• Contract Numbers: CMS-9733769, DE-AC02-76CH00016, MAT97-0564
• Files: TRIS
• Created Date: Jun 24 1999 12:00AM