TWISTING OF THIN-WALLED BOX GIRDERS

THE EFFECTS OF TWISTING COUPLES ON THIN-WALLED BOX GIRDERS WHICH RESIST CROSS-SECTIONAL DISTORTION EITHER BY THE FRAME ACTION OF THEIR WALLS OR BY SPECIAL DIAPHRAGMS IS TREATED WITH SPECIAL REFERENCE TO BRIDGE STRUCTURES. AN APPROXIMATE SOLUTION SUITABLE FOR RAPID DESIGN EMPLOYS THE THEORY OF TWO -DIMENSIONAL ELASTICITY. VERIFICATION IS PROVIDED BY THE RESULTS OF TWO MODEL TESTS. FINALLY, AS A COMPLEMENT TO THE DESIGN METHOD, A DISPLACEMENT METHOD SUITABLE FOR THE FINAL ANALYSIS OF AN IMPORTANT OR COMPLEX BOX GIRDER IS DEVELOPED. AN ELECTRONIC COMPUTER IS REQUIRED BECAUSE OF THE NUMBER OF SIMULTANEOUS EQUATIONS THAT RESULT, BUT THE STRAIGHTFORWARDNESS OF THE METHOD COUPLED WITH THE BANDED NATURE OF THE RESULTING STIFFNESS MATRIX ALLOWS ANY PRACTICAL STRUCTURE TO BE SOLVED BY A SMALL COMPUTER.

Subject/Index Terms

Filing Info

  • Accession Number: 00208228
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 2 1994 12:00AM