DYNAMIC ANALYSIS OF CURVED BOX-GIRDER BRIDGES

The finite element techniques is used for the forced vibration analysis of horizontally curved box girder bridges. Annular plates and cylindrical shell elements are used to discretize the slab, bottom flanges, and webs. Rectangular plate elements and pin-jointed bar elements are used for discretization of diaphragms. A vehicle, as the applied time varying forcing function, is simulated by two sets of concentrated forces, having components in the radial and transverse directions and moving with constant angular velocities on circumferential paths of the bridge. The effect of centrifugal forces is considered and the effect of damping of the bridge is neglected in the analysis. The mass condensation technique is used to reduce the number of coupled differential equations obtained from the finite element method. The resulting differential equations are solved by the linear acceleration method. A number of bridges with practical geometries are analyzed and impact factors are calcualted. /Author/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Rabizadeh, R O
  • Shore, S
• Publication Date: 1975-9

Media Info

• Pagination: 14 p.
• Serial:
  • Journal of the Structural Division
  • Volume: 101
  • Issue Number: ST9
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Box girders; Centrifugal force; Curved bridges; Differential equations; Finite element method; Flanges; Radials; Simulation; Slabs; Stresses; Structural diaphragms; Vibration; Webbing
• Uncontrolled Terms: Curved box girders
• Old TRIS Terms: Bridge dynamics; Diaphragms; Radial stress
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00125510
• Record Type: Publication
• Report/Paper Numbers: ASCE #11561 Proceeding
• Files: TRIS
• Created Date: Dec 16 1975 12:00AM