THE EYE-BAR CABLE SUSPENSION BRIDGE AT FLORIANOPOLIS, BRAZIL

THE FLORIANOPOLIS SUSPENSION BRIDGE IS THE LONGEST SPAN BRIDGE IN SOUTH AMERICA AND THE LONGEST EYE-BAR SUSPENSION SPAN IN THE WORLD. IT SPANS THE WATERS OF A STRAIT OF THE ATLANTIC OCEAN AND IS DESIGNED TO CARRY A HIGHWAY, ELECTRIC RAILWAY, AND WATER-SUPPLY MAIN TO FLORIANOPOLIS, THE ISLAND CAPITOL OF THAT STATE. INCREASED RIGIDITY AND ECONOMY OF MATERIAL WERE SECURED SIMULTANEOUSLY BY THE UTILIZATION OF THE CABLE TO REPLACE A PART OF THE TOP CHORD OF THE STIFFENING TRUSS, AND THE CONSEQUENT CHANGE FROM THE CONVENTIONAL PARALLEL CHORD TRUSS TO A STIFFENING TRUSS OF MORE EFFECTIVE OUTLINE. ROCKER TOWERS, WERE USED TO GIVE ADVANTAGES IN ECONOMY OF MATERIAL. INSTEAD OF WIRE FOR THE CABLES, EYE-BARS ARE USED MADE OF THE NEWLY DEVELOPED, HIGH- TENSION, HEAT-TREATED CARBON STEEL, HAVING YIELD POINT EXCEEDING 75,000 PSI AND INTENDED TO BE USED WITH A WORKING STRESS OF 50,000 PSI. THE SUSPENSION TYPE OF CONVENTIONAL DESIGN WAS ADOPTED FOR THIS BRIDGE IN ECONOMICAL COMPETITION WITH CANTILEVER DESIGNS. SUBSEQUENT MODIFICATIONS YIELDED FURTHER ECONOMIES IN FAVOR OF THE SUSPENSION TYPE. THE METHODS BY WHICH THE BRIDGE WAS DESIGNED, FABRICATED, TRANSPORTED AND SUCCESSFULLY ERECTED ARE DESCRIBED.

  • Supplemental Notes:
    • Vol 92, PapER NO 1662, PP 266-342
  • Authors:
    • STEINMAN, D B
    • Grove, W G
  • Publication Date: 1928

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  • Accession Number: 00208536
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 10 1994 12:00AM