DYNAMIC RESPONSE OF BRIDGE GRID UNDER MOVING FORCE

This paper deals with the analytical and experimental verification of an orthogonal bridge grid subjected to a moving force under constant velocities. The natural frequency, mode shapes and the dynamic response of the bridge grid are carried out for two cases, lumping the masses at the joints, in one case for the self weight of grid, and in the second case for the self weight of grid plus the weight of the slab. The modal analysis is used for the evaluation of dynamic response of the bridge. The moving force is treated as a transient pulse which is triangular in nature and assumed to be acting at the modal points. The resulting differential equation is solved by using Laplace transformation.

• Supplemental Notes:
  • Proceedings of the International Symposium on Earthquake Structure Engineering August 19-21, 1976 St. Louis Missouri.
• Corporate Authors:

  University of Missouri, Rolla

  Department of Civil Engineering, 1870 Miner Circle
  Rolla, MO  United States  65409
• Authors:
  • Munirudrappa, N
• Conference:
  • Proceedings of the International Symposium on Earthquake Structure Engineering August 19-21, 1976 St. Louis Missouri.
• Publication Date: 1976-8

Media Info

• Features: References;
• Pagination: p. 393-412

Subject/Index Terms

• TRT Terms: Bridges; Cartographic grids; Differential equations; Dynamic loads; Grids (Transmission lines); Laplace transforms; Modal analysis; Modal split; Natural frequency; Structural analysis; Transformations (Mathematics); Vibration
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Mathematical transformations
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00153226
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jun 17 1977 12:00AM