A method is proposed for the nonlinear analysis of grid systems. The structure is loaded incrementally and the current stiffness matrices of each member are evaluated using a numerical procedure and the moment-curvature and torsion-twist relationships of the grid elements. The member stiffness matrices are used to develop the global stiffness matrix of the grid structure. In other respects, the method is very much similar to linear elastic analysis of grid framework. A bridge structure is analyzed using a computer program, developed by incorporating the proposed method. The program is able to predict the nonlinear characteristics of the structure such that it can reduce the girder moments and (or) the total material costs.

  • Availability:
  • Corporate Authors:

    National Research Council of Canada

    Research Journals
    Ottawa, Ontario K1A 0R6,   Canada 
  • Authors:
    • Tharmabala, T
  • Publication Date: 1989-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00486837
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 31 1989 12:00AM