ELASTIC BUCKLING OF ARCHES UNDER SYMMETRICAL LOADING

Critical loads and the corresponding reactions, maximum moments, and crown deflections of two-hinged and fixed, parabolic and circular arches of constant cross section subjected either to a vertical concentrated load at the crown or a vertical load uniformly distributed along the arch axis are tabulated for a wide range of rise/span ratios. It is shown that the critical loads and the corresponding horizontal reactions for antisymmetrical (sideway) modes are rather insensitive to the prebuckling displacements while the opposite is true for the symmetrical models. The antisymmetrical mode corresponds to a bufurcation type instability while the symmetrical mode corresponds to a snap-through type of buckling. The data are anlayzed and simplified methods for estimating the critical loads and the critical horizontal reactions, or both, are suggested for antisymmetrical buckling. In addition to the solutions described previously, accurate values of the critical loads and horizontal reactions are reported for antisymmetrical buckling of two-hinged and fixed, parabolic and catenary arches subjected to loadings which cause pure axial compression and no prebuckling displacements.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 1085-95
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00139295
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #12149 Proceeding
  • Files: TRIS
  • Created Date: Sep 16 1976 12:00AM