SHEAR LAG IN STIFFENED BOX GIRDERS

METHODS FOR THE ANALYSIS OF SHEAR LAG IN WIDE FLANGES ARE REVIEWED AND A TREATMENT IS PRESENTED WHICH INCORPORATES THE EFFECT OF THE WEB UPON THE STRESS DISTRIBUTION IN THE STIFFENED FLANGE OF A BOX GIRDER BY REPLACING THE WEB WITH AN EDGE STIFFENER ON THE FLANGE. ATTENTION IS DRAWN TO THE EFFECT OF SEVERE SHEAR LAG IN THE CURVATURE AND DISPLACED SHAPE OF A CANTILEVERED BOX GIRDER. A SERIES OF TESTS ON MODEL GIRDERS IS DESCRIBED AND THE RESULTS ARE COMPARED WITH AN APPROXIMATE "STIFFENER-SHEET" ANALYSIS, A MORE RIGOROUS ORTHOTROPIC PLATE ANALYSIS, AND A PLANE STRESS FINITE ELEMENT ANALYSIS; THE LATTER IS USED TO ANALYSE FLANGES UNDER MORE COMPLEX CONDITIONS. A THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS CONFIRMED THE OBSERVED CURVATURES AT THE SECTION OF HIGH SHEAR LAG. /ASCE/

• Supplemental Notes:
  • Vol 96, No ST 7, PROC PAPER 7409, PP 1403-1419, 12 FIG
• Authors:
  • Malcolm, D J
  • Redwood, R G
• Publication Date: 1970-7

Media Info

• Serial:
  • Journal of the Structural Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Box girders; Bridge members; Cantilevers; Curvature; Finite element method; Flanges; Lagging (Earthwork); Orthotropic; Shear strength; Stiffeners (Plates); Structural analysis; Webbing
• Old TRIS Terms: Finite elements; Lagging; Stiffeners
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209256
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 26 1970 12:00AM