DYNAMIC STUDIES ON THE BEARING CAPACITY OF PILES. FINAL PROJECT REPORT

DEVELOPMENTS IN ELECTRONIC INSTRUMENTATION DURING THE PAST FEW YEARS MAKE IT POSSIBLE TO CONSIDER ACCELERATION, VELOCITY AND FORCE MEASUREMENTS OF HIGH-FREQUENCY PHENOMENA SUCH AS OCCUR DURING PILE DRIVING. EQUIPMENT HAS BEEN DEVELOPED TO RECORD ACCELERATION AND FORCE NEAR THE TOP OF A PILE. RECORDS HAVE BEEN MADE DURING THE DRIVING OF A NUMBER OF FULL SCALE STEEL PIPE PILES WHICH WERE LATER LOAD TESTED. SMALL PILES WERE ALSO DRIVEN AND TESTED. A THEORY RELATING DYNAMIC MEASUREMENTS AND STATIC CAPACITY IS PROPOSED. THIS THEORY HAS SUFFICIENT SIMPLICITY FOR USE ON A ROUTINE BASIS. GOOD CORRELATION BETWEEN THE STATIC CAPACITY DETERMINED BY THE PROPOSED THEORY FROM THE DYNAMIC RECORD AND THE STATIC CAPACITY MEASURED BY LOAD TESTS WAS ATTAINED. THE PROPOSED THEORY WAS ALSO APPLIED TO DYNAMIC RECORDS MEASURED ELSEWHERE WITH SATISFACTORY RESULTS. THIS THEORY CAN NOT BE EXPECTED TO GIVE A GOOD MEASURE OF BEARING CAPACITY IF THE STRENGTH CHANGES AFTER DRIVING. THEREFORE, IT IS SUGGESTED THAT THE PROPOSED THEORY BE APPLIED TO RECORDS OBTAINED BY REDRIVING PILES IN SOILS WHERE STRENGTH GAIN IS EXPECTED. A LITERATURE SURVEY WAS CONDUCTED WITH PARTICULAR EMPHASIS ON EXPERIMENTAL RESULTS. ANALYTICAL STUDIES ARE REPORTED WHICH USE BOTH A HUMPED MASS AND A CONTINUOUS MODEL OF THE PILE. AS A SECONDARY GOAL, RESULTS FROM FAST AND SLOW STATIC LOAD TESTS ARE REPORTED AND COMPARED. /AUTHOR/

• Corporate Authors:

  Case Western Reserve University

  Department of Civil Engineering
  10900 Euclid Avenue
  Cleveland, OH  United States  44106
• Authors:
  • Goble, G G
  • Scanlan, R H
  • Tomko, J J
• Publication Date: 1968

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Correlation analysis; Dynamic tests; Electronic equipment; Force; Load tests; Pile driving; Reviews; Static tests; Steel pipe; Structural tests; Support piles; Theory; Velocity measurement
• Old TRIS Terms: Electronic devices; Pile bearing capacities; Pile tests
• Subject Areas: Bridges and other structures; Data and Information Technology; Highways;

Filing Info

• Accession Number: 00208850
• Record Type: Publication
• Report/Paper Numbers: 2 Vols
• Files: TRIS
• Created Date: Nov 12 1994 12:00AM