TESTING A SINGLE CELL BOX-GIRDER MODEL

Experiments are detailed and results are given of stresses and deflections under prestress, wheel loading, and H sub 20 S sub 16 T sub 16 for an elastic single-cell simply supported box girder model of realistic section shape. The model was tested under three different conditons of internal diaphragms. Theoretical anlayses from six different analytic methods (three-dimensional finite- element, folded-plate, finite-strip, 2-dimensional finite element plus grid, beam-on-elastic foundation analogy, and equivalent grillage methods of analysis) were assessed on the basis of their ability to predict experimental behavior. A three-dimensional finite-element method gave best results. Conclusions based on the theoretical results and on the experimental results are presented and compared.

• Corporate Authors:

  National Roads Board, New Zealand

  Road Research Unit
  Wellington,   New Zealand 
• Authors:
  • Priestley, MJN
• Publication Date: 1974

Media Info

• Features: Figures; References; Tables;
• Pagination: 79 p.

Subject/Index Terms

• TRT Terms: Analysis; Box girders; Bridges; Deflection; Elasticity (Mechanics); Finite element method; Forecasting; Mathematical models; Stresses; Testing; Theory; Wheel loads
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Elastic phenomena; Stress conditions
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00082986
• Record Type: Publication
• Report/Paper Numbers: No. 25 Bulletin
• Files: TRIS
• Created Date: Mar 26 1975 12:00AM