DYNAMIC RESPONSE OF A HORIZONTALLY CURVED BRIDGE

A METHOD OF ANALYZING THE DYNAMIC RESPONSE OF A SIMPLE- SPAN HORIZONTALLY CURVED BRIDGE SUBJECTED TO A CONSTANT MOVING FORCE IS PRESENTED. DIFFERENTIAL EQUATIONS FOR THE OUT-OF-PLANE VIBRATIONAL MOTION OF THE CURVED BRIDGE UNDER THE ACTION OF THE CONSTANT MOVING FORCE ARE DERIVED AND SOLVED WITH THE METHOD OF INITIAL CONDITIONS. THE EFFECT OF THE TORSIONAL INERTIA IS STUDIED BOTH IN THE FREE VIBRATION SOLUTION AND IN THE FORCED VIBRATION SOLUTION. THE PARAMETERS OF THE PROBLEM ARE RADIUS OF HORIZONTAL CURVATURE, RIGIDITY RATIO, AND SPEED PARAMETER. THE EFFECTS OF WARPING AND DAMPING ARE ALSO STUDIED. THE SIGNIFICANT PARAMETERS THAT DESCRIBE THE BEHAVIOR OF THE HORIZONTALLY CURVED BRIDGE ARE THE RADIUS OF CURVATURE AND THE RIGIDITY RATIO. THE EFFECT OF CHANGING EITHER OF THESE TWO PARAMETERS RESULTS IN THE CHANGE OF THE FUNDAMENTAL NATURAL FREQUENCY OF THE CURVED BRIDGE. UNDER THE PASSAGE OF THE CONSTANT MOVING FORCE, THE CURVED BRIDGE IS VIBRATING BASICALLY AT ITS FUNDAMENTAL NATURAL FREQUENCY. /AUTHOR/

• Supplemental Notes:
  • Vol 94, No ST3, PROC PAPER 5862, PP 761-781
• Authors:
  • Tan, C P
  • Shore, S
• Publication Date: 1968-3

Media Info

• Serial:
  • Journal of the Structural Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Bridges; Curvature; Curves (Geometry); Damping (Physics); Differential equations; Force; Inertia (Mechanics); Motion; Moving industry; Radius; Solutions (Chemistry); Speed; Stiffness; Torsion; Vibration; Warpage
• Uncontrolled Terms: Horizontal curvature; Parameters; Warping
• Old TRIS Terms: Radius of curvature; Simple span; Solutions
• Subject Areas: Bridges and other structures; Freight Transportation; Highways;

Filing Info

• Accession Number: 00208433
• Record Type: Publication
• Files: TRIS
• Created Date: May 1 1994 12:00AM