Dynamic Measurements on Penetrometers for Determination of Foundation Design Parameters

Details

• Creators:
  Goble, G. G. ; Aboumatar, Hasan
• Corporate Creators:
  University of Colorado at Boulder. Dept. of Civil, Environmental and Architectural Engineering
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration ; Colorado. Department of Transportation
• Subject/TRT Terms:
  • Dynamic tests
  • Force
  • Standards
  • Foundations
  • Soil penetration test
  • Laboratory tests
  • response
  • acceleration
  • SPT
• Publication/ Report Number:
  CDOH-DTD-R-94
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Description:
  The historical background of the Standard Penetration Test (SPT) is reviewed with particular emphasis of those efforts to make dynamic measurements during the driving operation. The mechanics of one dimensional wave propagation is reviewed with emphasis on those aspects of the theory that applies to SPT operations. During the course of the project it was discovered that the accuracy of measurements produced by available accelerometers was questionable. A major effort was devoted to testing accelerometers in the laboratory and evaluating the results. A wave of mechanics analysis of both the Safety Hammer and the CME Automatic Hammer is presented and shown to agree closely with measurements. The conclusion was reached that the measurement system is now accurate and reasonably reliable. Measurements were made at field sites to evaluate the ability to calculate Wave Equations soil constants. Force and motion was calculated at the sampler from the top measurements. Results are presented for two different conditions. These results must be considered as preliminary, but they offer justification for optimism in the future use of the method.
• Format:
  PDF
• Funding:
  HPR 1488A
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93744/dot_93744_DS1.pdf
• File Type:
  [PDF - 3.00 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:d946180cd9d42db4f41183de9cde2c66e6e8919c4f65352301a2ea3d72e0aae775f3db61b85e553f1ad5680a4c64badda4e6530f109188559e1cc897a61a778e