STATIC TESTS ON UNSYMMETRICAL PLATE GIRDERS, MAIN TEST SERIES

TWO UNSYMMETRICAL PLATE GIRDERS MADE OF A36 STEEL WERE TESTED UNDER STATICALLY APPLIED LOADING. EACH GIRDER HAD SIX PANELS AND THE GEOMETRY AND THE PANEL ARRANGEMENT OF BOTH GIRDER SPECIMENS WERE IDENTICAL EXCEPT THAT ONE SPECIMEN HAD A LONGITUDINAL STIFFENER. THE CENTROIDAL AXIS WAS AT APPROXIMATELY ONE-THIRD OF THE GIRDER DEPTH WITH ONE FLANGE HAVING TWICE THE CROSS-SECTIONAL AREA OF THE OTHER FLANGE. BOTH GIRDERS HAD A LENGTH OF 37 FT.-10 IN. AND A WEB DEPTH OF 48 INCHES. FOR ONE HALF OF THE GIRDER LENGTH A 1/8 IN. WEB PLATE WAS USED, FOR THE OTHER HALF A 3/16 IN. WEB PLATE. THE RESULTING WEB SLENDERNESS RATIOS WERE 269 AND 414. THE PANEL ASPECT RATIOS WERE: 0.833, 1.15, 1.46 AND 1.77. GIRDER SPECIMENS, THE TEST SET-UP, THE TESTING PROCEDURE AND THE RESULTS ARE DESCRIBED AND DISCUSSED. THE PRIMARY OBJECTIVES OF THE TESTS WERE: VERIFICATION OF A NEW THEORY DEVELOPED FOR THE DETERMINATION OF THE ULTIMATE LOAD OF UNSYMMETRICAL PLATE GIRDERS (NOT DESCRIBED), AND INVESTIGATION OF THE BEHAVIOR OF THE GIRDER COMPONENTS UNDER AN INCREASING LOAD. THE LAYOUT AND SIZE OF THE GIRDER ELEMENTS WERE SELECTED IN SUCH A WAY AS TO DEFINE THE MOMENT-SHEAR INTERACTION CURVE IN THE REGION OF HIGH MOMENT AND HIGH SHEAR. ONLY THE END PANELS OF THE GIRDER WERE SUBJECTED PRIMARILY TO SHEAR. CORRELATION BETWEEN THE TEST RESULTS AND THE THEORY WAS WITHIN 5 PERCENT. A COMPARISON OF THE ULTIMATE LOADS FOR THE TRANSVERSELY AND LONGITUDINALLY STIFFENED PANELS OF THE TWO GIRDERS (WHICH WERE OTHERWISE IDENTICAL IN GEOMETRY) SHOWS THAT THE INTRODUCTION OF A LONGITUDINAL STIFFENER INTO PANELS SUBJECTED TO COMBINED ACTION OF HIGH MOMENT AND HIGH SHEAR RESULTED IN AN INCREASE IN STRENGTH OF APPROXIMATELY 44 PERCENT. FOR PANELS SUBJECTED PRIMARILY TO SHEAR THE INCREASE OF STRENGTH WAS 13 AND 20 PERCENT. /AUTHOR/

• Supplemental Notes:
  • Hrp, 328.6, 37383 PDH AGREEMENT NO
• Corporate Authors:

  Lehigh University

  Bethlehem, PA  United States  18015

  Pennsylvania Department of Highways

  400 North Street
  Harrisburg, PA  United States  17120-0095

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Schueller, W
  • Ostapenko, A
• Publication Date: 1968-9

Subject/Index Terms

• TRT Terms: Breaking loads; Distributions (Statistics); Flanges; Length; Longitudinal stiffeners; Plate girders; Shear strength; Specimens; Static tests; Steel; Stiffeners (Plates); Structural analysis; Structural mechanics; Thinness; Webbing
• Uncontrolled Terms: Slenderness ratio; Structural behavior; Transverse distribution
• Old TRIS Terms: Stiffeners
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215901
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: May 19 1994 12:00AM