Estimating Setup of Piles Driven into Louisiana Clayey Soils : Tech Summary

Wang, Jay; Verma, Neha; Steward, Eric; Louisiana Transportation Research Center

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Estimating Setup of Piles Driven into Louisiana Clayey Soils : Tech Summary

2009-11-01
By Wang, Jay ; Verma, Neha ; Steward, Eric

[PDF-156.19 KB]

English

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Creators:

Wang, Jay ; Verma, Neha ; Steward, Eric

Wang, Jay ; Verma, Neha ; Steward, Eric Less -
Corporate Creators:

Louisiana Transportation Research Center
Corporate Contributors:

Louisiana. Dept. of Transportation and Development
Subject/TRT Terms:

[+]

Clay Highways LA-1 Highway Relocation Mathematical Models Piles (Supports) Pile Setup Rate-based Mathematical Model Relocation (Facilities) Shaft Capacity Prediction
Publication/ Report Number:

LTRC Report 463
Resource Type:

Booklet/Pamphlet
Geographical Coverage:

Louisiana
Edition:

Tech summary.
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

Geotechnical engineers and researchers (Seed and Reese 1955, Long et al. 1999, and Bullock et al. 2005) have reported for many years that the axial capacity of a driven pile may increase over time, which is usually referred to as pile setup or freeze. A recent example was reported by Tsai and Zhang (2008). For instance, shaft resistances of some driven piles at the LA-1 relocation project gained as much as 30 to 100 percent of the initial resistance during the fi rst week of driving. Resistances of some piles in this project had signifi cant growth even after 3 to 7 months (LADOTD 2008). As such, it is prudent to incorporate pile setup into the pile design. Due to the relatively weak soils in the state, the Louisiana Department of Transportation and Development (LADOTD) has spent millions of dollars annually on pile foundations. The current LADOTD design practice is based on the 14-day resistance, ignoring any long term gain in resistance due to a lack of a systematic approach to handle this issue. As such, the pile design may be too conservative. Therefore, there is a need for developing a reliable design methodology that will account for the benefi t of pile setup, so a more cost-eff ective pile design may be used in the future.
Format:

PDF
Funding:

LTRC Project Number: 04-1GT ; State Project Number: 736-99-1359

LTRC Project Number: 04-1GT ; State Project Number: 736-99-1359 Less -
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:0ae52581e807e224cb9cd49b83244991718b6dee281f63bf9ae0d833929bd10d
Download URL:

https://rosap.ntl.bts.gov/view/dot/22296/dot_22296_DS1.pdf
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Estimating Setup of Piles Driven into Louisiana Clayey Soils : Tech Summary

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