MODEL ANALYSIS AND DESIGN OF CABLE-STAYED BRIDGES

THE USE OF MODELS AS A DIRECT AID IN ANALYSIS AND DESIGN OF CABLE STAYED BRIDGES HAS BEEN INVESTIGATED. IT WAS TAKEN INTO ACCOUNT THAT THE CABLE STAYED BRIDGE DISPLAYS A NONLINEAR BEHAVIOR DUE TO LARGE DISPLACEMENTS AND BENDING MOMENT-AXIAL FORCE INTERACTION. TO EVALUATE THE INTERNAL STRESSES AND DISPLACEMENTS UNDER THE ACTION OF DEAD AND LIVE LOADS, THE MODEL ANALYSIS WAS PERFORMED IN TWO STAGES. IN THE FIRST STAGE, THE BEHAVIOR OF THE STRUCTURE WAS ASSUMED TO BE LINEAR. IN THE SECOND STAGE, THE DATA OBTAINED ON THE BASIS OF LINEARITY WERE ADJUSTED BY TAKING INTO ACCOUNT THE ACTUAL NONLINEAR BEHAVIOR OF THE CABLE STAYED BRIDGE SYSTEM. TO REDUCE STRESSES AND DISPLACEMENTS DUE TO DEAD LOAD BY POST-TENSIONING THE CABLES, A PROCEDURE WAS DEVELOPED TO DETERMINE THE MAGNITUDE OF THE POST-TENSIONING FORCES REQUIRED IN CABLES TO ATTAIN THE REDUCTION SPECIFIED. THE EXPERIMENTAL DATA OBTAINED AS A RESULT OF THE MODEL INVESTIGATION WERE COMPARED WITH A THEORETICAL ANALYSIS PERFORMED ON THE CDC 3300 DIGITAL COMPUTER. /RRL/(A)/

• Supplemental Notes:
  • Vol 48, pp 439-464, 21 FIG, 1 TAB, 9 PHOT, 15 REF
• Authors:
  • Troitsky, M S
  • Lazar, B E
• Conference:
  • Inst Civil Engineers Proc, London /UK/
• Publication Date: 1971-3

Subject/Index Terms

• TRT Terms: Bending moments; Bridges; Cable stayed bridges; Cables; Digital computers; Dislocation (Geology); Live loads; Mathematical models; Nonlinear systems; Posttensioning; Static loads; Stresses
• Uncontrolled Terms: Models
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208766
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Nov 15 1971 12:00AM