DESIGN OF A BARREL-VAULT COFFERDAM

A UNIQUE PROPOSAL FOR THE CONSTRUCTION OF A COFFERDAM FOR REPAIR WORK ON THE WALLS OF A CANAL CONSISTS OF A RING-REINFORCED STEEL BARREL-VAULT WITH RUBBER BEARING PADS AND SEALS AT THE EDGES AND END. THE GENERAL INSTABILITY OF THE SKIN-RING COMBINATION COMMONLY IS CHECKED BY COMPARING THE LINE LOAD EQUIVALENT TO A TRIBUTARY LENGTH TIMES THE PRESSURE WITH THE RING-BUCKLING LINE LOAD. THE RING IN THIS CASE HAS ITS ENDS FREE TO SLIDE AND IN ADDITION MAY BE AFFECTED BY ECCENTRICITY AT THE ENDS, BY INITIAL MOVEMENT OR ELASTIC SUPPORT OF THE ENDS OR BY OUT-OF-ROUNDNESS. THESE AND OTHER EFFECTS ARE ANALYZED AND DISCUSSED WITH THE PROBLEMS OF DESIGN OF SUCH A COFFERDAM IN VIEW. /ASCE/

• Supplemental Notes:
  • Vol 95, No ST4, PROC PAPER 6511, PP 677-693, 7 FIG, 4REF, 3
• Publication Date: 1969-4

Media Info

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

Subject/Index Terms

• TRT Terms: Buckling; Canal linings; Canals; Cofferdams; Shells (Structural forms)
• Old TRIS Terms: Rings
• Subject Areas: Bridges and other structures; Highways; Marine Transportation;

Filing Info

• Accession Number: 00209003
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 28 1994 12:00AM