THE STRENGTH OF SINGLE-CELL CONCRETE BOX GIRDERS OF DEFORMABLE CROSS-SECTION

A method is described for predicting the collapse load of simply supported single-cell box girders of deformable cross-section subjected to eccentric loading. Predictions of this method (which is based on the plastic theory of structures and uses an upper bound approach), agree well with the results of tests on thirteen reinforced and prestressed concrete models in which the shape of cross-section, the eccentricity of loading and the amount of reinforcement were varied. A method is proposed for determining a transmission length over which a distortional loading can be transformed into a purely torsional system of shear forces in the walls of the box. This method is independent of support conditions, and is the basis for a suggested simple design method for proportioning reinforcement to deal with the distortional effects of eccentric loads.

• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • Spence, RJS
  • MORLEY, C T
• Publication Date: 1975-12

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 743-761
• Serial:
  • Institution of Civil Engrs, Pt2, Research & Theory
  • Volume: 59
  • Publisher: Institution of Civil Engineers

Subject/Index Terms

• TRT Terms: Box girders; Bridge design; Bridges; Collapse; Concrete; Concrete pavements; Cross sections; Deformation; Eccentricity; Forecasting; Loads; Mathematical models; Pavement maintenance; Plasticity; Prestressed concrete; Reinforced concrete; Strength of materials; Structural design; Transmissions
• Uncontrolled Terms: Eccentric loading; Models
• Old TRIS Terms: Concrete box girders; Plastic theory; Single cell structures
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00131123
• Record Type: Publication
• Files: TRIS
• Created Date: May 14 1976 12:00AM