BENDING AND SHEAR STRENGTH OF LONGITUDINALLY STIFFENED PLATE GIRDERS
THE EFFECT OF LONGITUDINAL STIFFENERS ON THE STATIC BEHAVIOR OF PLATE GIRDER PANELS AND THE CONTRIBUTION OF LONGITUDINAL STIFFENERS TO THE ULTIMATE STRENGTH OF PLATE GIRDERS ARE BEING DETERMINED. BENDING TESTS ON LONGITUDINALLY STIFFENED PLATE GIRDERS INDICATE THAT BY CONTROLLING LATERAL WEB DEFLECTIONS, A LONGITUDINAL STIFFENER CAN MAINTAIN A LINEAR STRESS DISTRIBUTION IN THE GIRDER SECTION. IT IS SUGGESTED THAT A PROPERLY POSITIONED AND PROPORTIONED LONGITUDINAL STIFFENER CAN MAINTAIN THIS LINEAR STRESS DISTRIBUTION UNTIL THE ULTIMATE MOMENT IS REACHED, THUS ELIMINATING THE NEED FOR A REDUCTION IN ULTIMATE BENDING STRESS. STIFFENER POSITIONING AND PROPORTIONING REQUIREMENTS ARE FORMULATED TO ENSURE THAT THE BENDING STRESS DISTRIBUTION REMAINS LINEAR. SHEAR TESTS ON LONGITUDINALLY STIFFENED PLATE GIRDERS REVEAL THAT A LONGITUDINAL STIFFENER CAN CONTROL LATERAL WEB DEFLECTIONS TO THE EXTENT THAT SEPARATE TENSION FIELDS CAN BE DEVELOPED IN THE SUBPANELS FORMED BY THE STIFFENER. ACCORDINGLY, A SHEAR STRENGTH THEORY IS FORMULATED BY ASSUMING THAT THE SHEAR STRENGTHS OF THE SUBPANELS CAN BE DEVELOPED INDEPENDENTLY OF ADJACENT SUBPANELS AND THAT THE ULTIMATE SHEAR FORCE OF THE STIFFENED PANEL IS THE SUM OF THE ULTIMATE SHEAR FORCES OF THE SUBPANELS. /AUTHOR/
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Corporate Authors:
Lehigh University
Fritz Engineering Laboratory
Bethlehem, PA United States 18015 -
Authors:
- Cooper, P B
- Publication Date: 1965
Subject/Index Terms
- TRT Terms: Bend tests; Bending; Bending stress; Deformation curve; Location; Panels; Plate girders; Position fixing; Shear strength; Shear stress; Shear tests; Statics; Stiffeners (Plates); Stresses
- Uncontrolled Terms: Longitudinal movement
- Old TRIS Terms: Lateral movement; Static conditions; Stiffeners
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00208268
- Record Type: Publication
- Report/Paper Numbers: No 304.6 140 pp
- Files: TRIS
- Created Date: Apr 13 1994 12:00AM