Assessment of Micropile-Supported Integral Abutment Bridges (3.11)

Integral abutment bridges (IABs) are the preferred method of construction by Maine Department of Transportation (DOT) and other transportation agencies throughout the United States due to their durability and reduced upfront and life-cycle costs. Shallow bedrock, commonplace at bridge sites throughout the state of Maine, has precluded the use of conventional driven pile foundations and IABs in some instances. Micropiles are an attractive foundation alternative at shallow bedrock sites where conventional foundation systems (e.g. driven piles) cannot develop sufficient length to achieve fixity and/or adequate geotechnical resistance. These foundation elements can be installed through challenging glacial geology, including boulder material and bedrock. Currently, there is no guidance on the design of micropile-supported IABs, or long-term instrumentation data capturing their performance. The objective of this study is to develop a design methodology and engineering recommendations for the structural and geotechnical design of micropiles for IABs, and to demonstrate that micropiles satisfy strength and stability requirements for IAB applications when shallow bedrock is present.

• Record URL:
  https://tidc.umaine.edu/tidc_project/3-11-umaine/

Language

• English

Project

• Status: Active
• Funding: $398,792
• Contract Numbers:

  69A3551847101

• Sponsor Organizations:

  Maine Department of Transportation

  Research Division, Child Street, 16 State House Station
  Augusta, ME  United States  04333-0016

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590

  ADSC-IAFD

  Southlake, Texas  United States 
• Managing Organizations:

  Maine Department of Transportation

  Research Division, Child Street, 16 State House Station
  Augusta, ME  United States  04333-0016

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  University of Maine, Orono

  Department of Civil and Environmental Engineering.
  5717 Corbett Hall
  Orono, ME  United States  04469-5711
• Performing Organizations:

  University of Maine, Orono

  Department of Civil and Environmental Engineering.
  5717 Corbett Hall
  Orono, ME  United States  04469-5711

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  Maine Department of Transportation

  Research Division, Child Street, 16 State House Station
  Augusta, ME  United States  04333-0016
• Principal Investigators:

  Davids, Bill

  Gallant, Aaron

• Start Date: 20190901
• Expected Completion Date: 20250531
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Bridge abutments; Bridge design; Bridge foundations; Evaluation and assessment; Geotechnical engineering; Recommendations
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways;

Filing Info

• Accession Number: 01730653
• Record Type: Research project
• Source Agency: Transportation Infrastructure Durability Center
• Contract Numbers: 69A3551847101
• Files: UTC, RIP
• Created Date: Feb 7 2020 7:28PM