PLASTIC ROTATIONS IN CONTINUOUS ENCASED BEAMS

Reported are test results of rotation capacities of 11 two-span continuous encased beams. Composite beams consisting of steel-joists of variable moments of inertia, encased in concrete, were tested under single and two-point loadings. Beams of both rectangular and T-cross sections were tested. A method of computing the magnitude of plastic rotation at the hinge sections and the redistribution of moments is proposed. The total measured rotations over the plastic lengths corresponding to different hinge sections of the beams, compared well with the theoretical rotations. Consequently, a close agreement has been noticed for the degree of redistribution of moments obtained to tests and that predicted on the basis of the proposed moment-curvature relationship. /Author/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Maiti, S C
• Publication Date: 1975-6

Media Info

• Pagination: p. 1269-81
• Serial:
  • Journal of the Structural Division
  • Volume: 101
  • Issue Number: ST6
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Beams; Composite materials; Continuous structures; Engineering moments; Moments of inertia; Rotation
• Uncontrolled Terms: Composite beams; Continuous beams; Encasement; Moment distribution
• Old TRIS Terms: Moment of inertia; Test results
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00097028
• Record Type: Publication
• Report/Paper Numbers: ASCE #11375 Proceeding
• Files: TRIS
• Created Date: Aug 27 1975 12:00AM