INFLUENCE OF DIAPHRAGMS ON BEHAVIOUR OF BOX GIRDERS WITH DEFORMABLE CROSS SECTION

IN THE DESIGN OF THIN-WALLED STRUCTURES THREE-DIMENSIONAL ANALYSES HAVE BECOME ESSENTIAL TO HARMONIZE SAFETY AND ECONOMY. HOWEVER, THE INTERACTION BETWEEN THEIR STRUCTURAL ELEMENTS IS NOT FULLY CONSIDERED IN THEIR DESIGN. FOR EXAMPLE, THE DISTORTIONAL DEFORMATION OF BOX GIRDERS AND THE INFLUENCE OF DIAPHRAGMS ON THAT DEFORMATION MAKES IT IMPOSSIBLE TO APPLY CONVENTIONAL THIN-WALLED-BEAM THEORY. TYPICALLY, SUCH DIAPHRAGMS ARE DESIGNED FROM EXPERIENCE RATHER THAN ON A THEORETICAL BASIS. A THEORETICAL AND EXPERIMENTAL APPROACH TO THIS PROBLEM IS REPORTED IN WHICH VLASOV'S FOLDED-PLATE THEORY IS MODIFIED AND THE RESULTS THEREFROM ARE COMPARED WITH THOSE OBTAINED BY THE FINITE- STRIP METHOD. BOTH SETS OF THEORETICAL RESULTS ARE COMPARED WITH EXPERIMENTAL ONES FOR THE CASES OF (1) STRAIGHT BOX GIRDERS WITH RECTANGULAR AND RIBBED TRAPEZOIDAL CROSS SECTION AND (2) CURVED BOX GIRDERS. THEORETICAL AND EXPERIMENTAL RESULTS ARE IN GOOD AGREEMENT. FIVE MAJOR CONCLUSIONS ARE PRESENTED.

• Corporate Authors:

  Intl Assoc Bridge & Struct Eng /Switz

  /Ninth Congress
  ,   United States 
• Authors:
  • Sakai, F
  • Okumura, T
• Publication Date: 1972-5-13

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 285-98
• Serial:
  • Publication of: Intl Assoc Bridge & Struct Eng /Switz/
  • Publisher: Intl Assoc Bridge & Struct Eng /Switz

Subject/Index Terms

• TRT Terms: Box girders; Cross sections; Curves (Geometry); Deformation; Diaphragms (Engineering); Girders; Structural plates; Theory; Thin walls
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Curved steel girders; Diaphragms; Folded plates
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209783
• Record Type: Publication
• Files: TRIS
• Created Date: May 15 1973 12:00AM