RELATIVE COLUMN STRENGTH OF LONG PILES

SUFFICIENT DATA ARE LACKING ON WHICH TO BASE ACCURATE DESIGN CRITERIA FOR LONG PILES USED TO SUPPORT WATERFRONT STRUCTURES. IN ORDER TO DETERMINE THE SELECTION OF THE BEST TYPE OF COMMERCIALLY AVAILABLE PILE, FULL-SCALE TESTS ON THE RELATIVE COLUNM STRENGTHS OF SIX DIFFERENT TYPES, 80 FEET LONG, WERE CONDUCTED AT THE U.S. NAVAL CIVIL ENGINEERING LABORATORY. NINE OF THE EIGHTEEN SPECIMENS SCHEDULED FOR THE TEST PROGRAM WERE TESTED UNDER CONDITIONS OF PILES AT REFUSAL, UTILIZING A FIELD TEST TOWER CAPABLE OF PRODUCING LOADS UP TO 400 TONS, IN WHICH SPECIMENS WITH AN UNSUPPORTED LENGTH OF 60 FEET OR MORE WERE LOADED TO BUCKLING FAILURE. TESTS ON FOUR TYPES WERE CONDUCTED TO FAILURE; TESTS ON TWO TYPES WERE TERMINATED AT THE CAPACITY OF THE LOADING SYSTEM. THIS INTERIM REPORT IS ON THE RESULTS OF TESTS TO DATE. DATA ARE SUFFICIENT TO DETERMINE ULTIMATE LOAD CAPACITIES WITH REASONABLE ACCURACY. GOOD AGREEMENT IS OBTAINED BETWEEN TEST BUCKLING LOADS AND THEORETICAL BUCKLING LOADS CALCULATED ON THE BASIS OF TANGENT MODULUS PRINCIPLES. /AUTHOR/

• Supplemental Notes:
  • Technical REPORT 066, 77 PP, 27 FIG, 6 TAB, 8 PHOT, 13 REF,
• Corporate Authors:

  Naval Civil Eng Lab, Port Hueneme /US

  ,    
• Authors:
  • Hromadik, J J
• Publication Date: 1960-2-18

Subject/Index Terms

• TRT Terms: Breaking loads; Buckling; Columns; Design; Failure; Field tests; Load tests; Specimens; Strength of materials; Structural tests; Support piles; Theory
• Uncontrolled Terms: Design criteria
• Old TRIS Terms: Full scale specimens; Pile tests
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00208552
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 5 1970 12:00AM