ANALYSIS OF SUSPENDED CURVED GIRDER

A METHOD OF ANALYSIS IS PRESENTED FOR CURVED GIRDERS ON FLEXIBLE SUPPORTS FOR AN INTERCHANGE STRUCTURE WHERE GEOMETRICS, UNDERCLEARANCE, AND ESTHETICS DICTATED A SUSPENDED SYSTEM. THE STRUCTURE, RAMP G, IS SUSPENDED FROM AN UPPER LEVEL STEEL GIRDER THAT CARRIES THE SOUTHWEST FREEWAY OVER SOUTH CAPITOL STREET IN WASHINGTON, D.C. THE PROCEDURES ESTABLISHED FOR DESIGN REDUCED THE INDETERMINATE SYSTEM TO ESSENTIALLY TWO PROBLEMS' ANALYSIS OF THE STRAIGHT CONTINUOUS GIRDER ON FLEXIBLE SUPPORTS, AND THE RESOLUTION OF THE TORSIONAL FORCES CAUSED BY CURVATURE. TO CHECK THE ASSUMPTIONS AND DESIGN PROCEDURES, THE STRUCTURE WAS FIELD TESTED. DEAD LOAD MEASURED REACTION RESULTS COMPARED WELL WITH COMPUTERED DEAD LOAD REACTIONS. A 35-TON TRUCK WAS USED TO PERFORM LIVE LOAD TESTS. OF PARTICULAR INTEREST WAS A TEST RUN OF THE TRUCK AT 40 MPH AND A SUDDEN APPLICATION OF THE BRAKES TO TEST FOR SIDE SWAY AND VIBRATION. NO APPRECIABLE SWAY OF DEFLECTIONS WERE OBSERVED. /AUTHOR/

• Supplemental Notes:
  • Vol 92,no ST1,PROC PAPER 4662,PP 21-38
• Authors:
  • Soto, M H
• Publication Date: 1966-2

Media Info

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

Subject/Index Terms

• TRT Terms: Analysis; Beams; Continuous structures; Curvature; Curves (Geometry); Field tests; Flexible structures; Force; Foundations; Girders; Interchanges; Live loads; Structural supports; Structures; Suspended structures; Torsion
• Uncontrolled Terms: Continuous beams; Resolution
• Old TRIS Terms: Curved steel girders; Flexible foundations; Supports
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208271
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 22 1994 12:00AM