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

Details

• Creators:
  Chang, Nien-Yin ; Vinopal, Robert ; Nghiem, Hien ; Vu, Cuong
• Corporate Creators:
  University of Colorado at Denver
• Corporate Contributors:
  Colorado. Dept. of Transportation. Research Branch ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Piles (Supports)
  • Loads
  • Pile driving
  • Bridge piers
  • Load and resistance factor design (LRFD), Driven piles, Grade 36 steel piles, Grade 50 steel piles, GRLWEAP,
  • CAPWAP, Standard penetration tests (SPT), O-cell tests, Pile driving analyzers (PDA)
• 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."
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23401/dot_23401_DS1.pdf
• File Type:
  [PDF - 5.81 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:82494aa1fbeda638f280055e88a2f6281cdc5e14ad103b9de28dbdef56eca1b2f71bf3ac5674280b28dfc21d7a309876df1d7fe207fcbccce201e4fa13fc3fa1