CPT Based Pile Design

Song, Chung R.; Kim, Seunghee; Bekele, Binyam M; Zhang, Jingato; Silvey, Alex; University of Nebraska--Lincoln. Dept. of Civil Engineering

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CPT Based Pile Design

2019-01-01
By Song, Chung R. ; Kim, Seunghee ; Bekele, Binyam M ; ...

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Creators:

Song, Chung R. ; Kim, Seunghee ; Bekele, Binyam M ; Zhang, Jingato ; Silvey, Alex

Song, Chung R. ; Kim, Seunghee ; Bekele, Binyam M ; Zhang, Jingato ; Silvey, Alex Less -
Corporate Creators:

University of Nebraska--Lincoln. Dept. of Civil Engineering
Corporate Contributors:

Nebraska. Department of Transportation
Subject/TRT Terms:

[+]

Cone Penetration Test Cone Penetrometers Field Tests Geotechnical Engineering Load And Resistance Factor Design LRFD Pile Capacity Pile Dynamic Analyzer Pile Foundations
Publication/ Report Number:

NDOT: SPR-P1 M076, NTC: 26-1121-4042-001
Resource Type:

Tech Report
Geographical Coverage:

Nebraska ; United States

Nebraska ; United States Less -
Edition:

Final Report, 7/1/2017 – 12/31/2018
Corporate Publisher:

University of Nebraska--Lincoln
Abstract:

The geotechnical design of a pile foundation is concerned with the determination of the safe magnitude of an external load that the foundation can carry without jeopardizing the stability of the supported structure. In recent years, in-situ sounding tests are becoming a more attractive method to predict pile capacity due to the rapid development of testing instruments, improved understanding of their mechanics and interpretation, and cost efficiency. The cone penetration test (CPT) and its upgraded version, the piezocone penetration test (PCPT), are the most widely used in situ sounding tests to predict pile capacity. This research report compared eight CPT-based and three PCPT-based methods for potential application of the best performer(s) by the Nebraska Department of Transportation (NDOT) to predict pile capacity. Several statistical as well as non-statistical comparison criteria were adopted. According to the evaluation output, the modified (calibrated) Tumay and Fakhroo (1982) method was found to be the best performer for H-piles, and the modified De Ruiter and Beringen (1979) method was found to be the best performer for pipe and precast prestressed concrete piles. For a complete design of pile foundations, the settlement criterion has to be incorporated. The settlement of pile foundations must not exceed a certain tolerable magnitude of settlement to ensure the safety of the structure supported. In this regard, this research project adopted the t – z curve approach to predict pile settlements. Several existing t – z curve approaches based on analytical and numerical techniques were assessed and their relative accuracy was investigated. An easy to use software for the computation of settlement was also developed.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:0461a8babbc6da9ca76671e643ecb273dd7e5c7aa655d4a716d4d67a16844b41
Download URL:

https://rosap.ntl.bts.gov/view/dot/49457/dot_49457_DS1.pdf
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CPT Based Pile Design

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