Design and Numerical Evaluation of GFRP Reinforcement for Concrete Bridge Railing

The aim of this proposal is to provide design and numerical evaluation of glass fiber reinforced polymer (GFRP) bars for concrete bridge railing. The “steel-free” concrete bridge structure concepts have gained wider acceptance in current practice due to reduced material cost and validated field performance from the past researches. However, on-site bending is still not possible for GFRP bars, which causes increase in the number of GFRP bars used in construction. Alternatively, headed end GFRP bars may address this problem. Existing researches have conducted both experimental and numerical modeling investigations to achieve an optimum design for GFRP reinforcement in concrete structures, especially railings. It was suggested that the headed-end GFRP bars can provide sufficient resistance, however, with an added cost. Therefore, anchorage GFRP bars with modified bending radius has also been suggested to achieve same resistance with lower cost. Considering the on-going effort in seeking the optimized GFRP configurations for concrete bridge railings, the preliminary design and numerical validation is critical in finding the best design prior to the field implementation of GFRP bars for concrete bridge railings in the state of Missouri.

Language

• English

Project

• Status: Completed
• Funding: $170000
• Contract Numbers:

  69A3551747107

• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Mid-America Transportation Center

  University of Nebraska-Lincoln
  2200 Vine Street, PO Box 830851
  Lincoln, NE  United States  68583-0851
• Project Managers:

  Stearns, Amy

• Performing Organizations:

  Missouri University of Science & Technology, Rolla

  Department of Engineering
  202 University Center
  Rolla, MO    65409
• Principal Investigators:

  Wu, Chenglin

• Start Date: 20210101
• Expected Completion Date: 20220630
• Actual Completion Date: 20221231
• USDOT Program: University Transportation Centers
• Source Data: RiP Project 91994-83

Subject/Index Terms

• TRT Terms: Bars (Building materials); Bridge design; Bridge railings; Concrete bridges; Fiber reinforced polymers; Glass fiber reinforced concrete; Numerical analysis; Optimization; Validation
• Subject Areas: Bridges and other structures; Design; Highways; Materials;

Filing Info

• Accession Number: 01762020
• Record Type: Research project
• Source Agency: Mid-America Transportation Center
• Contract Numbers: 69A3551747107
• Files: UTC, RIP
• Created Date: Jan 7 2021 2:02PM