CDOT strategic plan for data collection and evaluation of grade 50 h-piles into bedrock.

Chang, Nien-Yin; Vinopal, Robert; Nghiem, Hien; Vu, Cuong; University of Colorado at Denver

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CDOT strategic plan for data collection and evaluation of grade 50 h-piles into bedrock.

2011-08-01
By Chang, Nien-Yin ; Vinopal, Robert ; Nghiem, Hien ; ...

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Details:

Creators:

Chang, Nien-Yin ; Vinopal, Robert ; Nghiem, Hien ; Vu, Cuong

Chang, Nien-Yin ; Vinopal, Robert ; Nghiem, Hien ; Vu, Cuong Less -
Corporate Creators:

University of Colorado at Denver
Corporate Contributors:

Colorado. Dept. of Transportation. Research Branch ; United States. Federal Highway Administration

Colorado. Dept. of Transportation. Research Branch ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Bridge Piers CAPWAP, Standard Penetration Tests (SPT), O-cell Tests, Pile Driving Analyzers (PDA) Load And Resistance Factor Design (LRFD), Driven Piles, Grade 36 Steel Piles, Grade 50 Steel Piles, GRLWEAP, Loads Pile Driving Piles (Supports)
Publication/ Report Number:

CDOT-2011-11
Resource Type:

Tech Report
Geographical Coverage:

Colorado
Corporate Publisher:

Colorado. Dept. of Transportation. Research Branch
Abstract:

"This report presents Phase I of CDOT’s effort to address the issues associated with Colorado-specific resistance factors for

driven pile designs. As proven during the process of this research, resistance factors vary with geomaterial types and

geological locations. Procedures for the driven piles performance data collection for the evaluation of resistance factors for

Grade 50 Steel H-piles penetrating into bedrocks are recommended.

The data collection of driven pile performance is planned to continue in Phase II and the benefits of Grade 50 steel piles

beyond those of Grade 36 steel piles will be investigated. The research will be expanded to investigate the benefit of using

steel driven H-piles with sizes larger than the sizes currently adopted by CDOT, including 18-inch and 24-inch steel Hpiles.

The benefits in terms of capacity enhancement, pile number reduction in pile group for bridge support, and the

associated time and cost savings will be assessed. Different methods for nominal capacity assessment will be used to

evaluate the nominal capacities of 18-inch and 24-inch piles. Pile performances will be monitored using pile driving

analyzer (PDA), and, if budget permits, load tests will be performed to check the pile capacity calculation.

Implementation

Successful implementation of geotechnical load and resistance factor design (LRFD) procedures in bridge foundation

designs requires Colorado-specific resistance factors. When completed at the end of Phase II, this research is expected to

provide Colorado-specific geotechnical resistance factors for steel driven pile designs."
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:3246cf30e1763bed5d2958c22ce51fa9d0bbded972986f15387f15fbec480eff
Download URL:

https://rosap.ntl.bts.gov/view/dot/23401/dot_23401_DS1.pdf
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CDOT strategic plan for data collection and evaluation of grade 50 h-piles into bedrock.

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