Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

Eleven pile load tests were reviewed and analyzed to document the issues related to the design and load tests of driven pile foundations for a new bridge construction project in Louisiana. This project involves the design and construction of an elevated bridge approximately 17 miles in length. The project area is located in a Coastal Deltaic Plain, Saline Marsh area, underlain by slightly under-consolidated to normally-consolidated weak clays to depths greater than 200 feet. Environmental and site constraints limited the use of pile types and load test methods for this project. The geotechnical investigation methods consist of both cone penetration test and soil borings. Both statnamic load tests and static load tests were used depending upon the magnitude of the test loads. The construction method also dictated the duration of setup allowed for in the performance of the load tests. This paper documents the results of an extensive load test program including the setup behavior of various piles. The results of dynamic monitoring at various times for setup checks with either static or statnamic load tests were also discussed. The Tomlinson α-Method and the Norlund’s Method proved to provide excellent predicted pile capacities.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Design and Load Verification of Driven Pile Foundations

Arlington, Virginia

Eleven pile load tests were reviewed and analyzed to document the issues related to the design and load tests of driven pile foundations for a new bridge construction project in Louisiana. This project involves the design and construction of an elevated bridge approximately 17 miles in length. The project area is located in a Coastal Deltaic Plain, Saline Marsh area, underlain by slightly under-consolidated to normally-consolidated weak clays to depths greater than 200 feet. Environmental and site constraints limited the use of pile types and load test methods for this project. The geotechnical investigation methods consist of both cone penetration test and soil borings. Both statnamic load tests and static load tests were used depending upon the magnitude of the test loads. The construction method also dictated the duration of setup allowed for in the performance of the load tests. This paper documents the results of an extensive load test program including the setup behavior of various piles. The results of dynamic monitoring at various times for setup checks with either static or statnamic load tests were also discussed. The Tomlinson α-Method and the Norlund’s Method proved to provide excellent predicted pile capacities.