Dynamic Pile Monitoring Report, Exit Glacier Bridge, Kenai Fords National Park, Alaska
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Dynamic Pile Monitoring Report, Exit Glacier Bridge, Kenai Fords National Park, Alaska

Filetype[PDF-908.85 KB]


English
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Details:

  • Corporate Creators:
    F. E. Ward Inc.
  • Contributors:
  • Corporate Contributors:
    United States. Federal Highway Administration. Demonstration Projects Division
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-DP-66-09
  • Resource Type:
    Tech Report
  • Right Statement:
    Public Domain
  • Geographical Coverage:
  • Corporate Publisher:
    United States. Federal Highway Administration. Demonstration Projects Division
  • Abstract:
    Field demonstrations for Demonstration Project 66, "Design and Construction of Driven Pile Foundations," include (1) dynamic pile monitoring by pile analyzer (field computer), and (2) static pile load testing using a mobile pile load testing frame. The equipment and technical assistance are made available to requesting State highway departments and Direct Federal Divisions. A request for performing dynamic pile tests on some of the production piles for the subject project was received from the Western Direct Federal Division (WDFD) in September 1984. Necessary specifications required for performing dynamic testing were provided to WDFD and were included in the contract documents. The purpose for the dynamic pile testing was (1) to demonstrate the use of newer and more accurate techniques for determining pile load capacity during driving, (2) to determine the ultimate pile load capacities for the subject bridge, and (3) to compare load capacities of piles installed partially by the vibratory ha11111er and those installed exclusively, by the impact ha11111er. The contractor had requested the project engineer for an approval to install piles to a certain depth by using vibratory ha11111er before using an impact ha11111er to drive the piles. It was felt that the use of vibratory ha11111er may not allow the piles to develop necessary soil resistance. Therefore, dynamic pile testing was used to evaluate the load capacities of piles installed partially by a vibratory ha11111er and those installed by the impact ha11111er. The field work was performed from April 18 to April 20, 1985. The dynamic tests were performed by Mr. H. Clark, Civil Engineering Technician, in the Demonstration Projects Division, and Mr. S. Vanikar, Geotechnical Engineer, in the Geotechnical and Materials Branch. The piling contractor was F. E. Ward Inc. On April 20, 1985, after the dynamic testing was completed, results of the analysis and preliminary recommendations were discussed with Messrs. Monte Symons, Geotechnical Engineer, and James Crutchen, Project Engineer. A detailed description of the work performed, test results, data analysis, and recommendations follow in this report.
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