Statewide Calibration of CPT Direct Design Methods Using Static Load Test Data

The primary objectives of this research project are as follows: (1) Look into the possibility of grouping the PLTs and CPT/CPTu database into state regions for regional evaluation of pile-CPT/CPTu methods and calibration the corresponding resistance factors (ϕ). (2) Group the collected PLTs and CPT/CPTU database into pile type for possible extending and evaluating the direct pile-CPT/CPTu methods for each pile type and calibrating the corresponding resistance factors (ϕ). (3) Explore the potential application of Bayesian algorithm to enhance the statistically limited or scattered data and update the statistical data (mean, , and COV) for better evaluating and calibrating the resistance factors (ϕ). (4) Re-evaluate and re-rank the different pile-CPT/CPTu design methods for estimating the ultimate capacity of different pile types and/or different regions using different evaluation criteria. (5) Look into the possibility of developing new and/or modifying pile design methods using machine learning (ML) algorithms for better evaluating the ultimate capacity of piles utilizing CPT/CPTu data. (6) Evaluate available SCPT methods for generating the load-settlement curve of pile-load tests and hence evaluating the ultimate capacity of piles based on Davisson’s interpretation criteria. (7) Recalibrate the resistance factors for the different direct pile-CPT/CPTu methods for use in LRFD design of pile foundations. (8) Update the LPD-CPT software to include the top-performed pile-CPT/CPTu/SCPT design methods for different state regions and different pile types. (9) Develop a methodology to perform periodic/continuous recalibration of direct design methods as well as resistance factors.

Language

• English

Project

• Status: Active
• Funding: $426843
• Contract Numbers:

  24-3GT

  1000525

• Sponsor Organizations:

  Federal Highway Administration

  5304 Flanders Drive, Suite A
  Baton Rouge, LA  United States  70808
• Managing Organizations:

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808

  Louisiana Department of Transportation

  P.O. Box 94245
  1201 Capitol Access Road
  Baton Rouge, LA  United States  70804-9245
• Project Managers:

  Zhang, Zhongjie

• Performing Organizations:

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808
• Principal Investigators:

  Abu-Farsakh, Murad

• Start Date: 20240501
• Expected Completion Date: 20270430
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Calibration; Cone penetrometers; Load and resistance factor design; Load tests; Pile foundations
• Geographic Terms: Louisiana
• Subject Areas: Bridges and other structures; Design; Geotechnology;

Filing Info

• Accession Number: 01913249
• Record Type: Research project
• Source Agency: Louisiana Transportation Research Center
• Contract Numbers: 24-3GT, 1000525
• Files: RIP, STATEDOT
• Created Date: Mar 28 2024 7:57AM