ULTIMATE LIVE LOAD DISTRIBUTION FACTOR FOR BRIDGES

The purpose of this research was to establish a more realistic lateral load distribution factor, in conjunction with the AASHTO Load Factor Design Method. The distribution factor at ultimate load is designated as Dp, which is Dp = 3.45 - i.809 gamma + 0.315 gamma squared, in which gamma = number of girders/ number of lanes. This equation gives approximately a value of S/7.0, as compared to the present value of S/5.5. The analytical method, which permitted development of this equation, considered the elastoplastic behavior of loaded composite girder slab bridge systems. The method involved solution of elastic plate equations with modifications to include inelastic action. Several design examples are presented in order to illustrate the use of the equations.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 1481-96
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00126471
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #11443 Proceeding
  • Files: TRIS
  • Created Date: Dec 16 1975 12:00AM