Recommended Guidelines for Prefabricated Bridge Elements and Systems Tolerances and Dynamic Effects of Bridge Moves

Many state departments of transportation (DOTs) and the Federal Highway Administration (FHWA) are actively promoting accelerated bridge construction (ABC) to reduce traffic impacts, onsite construction time, environmental impacts, and life-cycle costs and to improve work-zone safety, site constructability, material quality, and product durability while replacing the nation's transportation infrastructure. The use of prefabricated bridge elements and systems (PBES) for ABC is growing fast. However, different challenges have been encountered during bridge construction related to proper fit-up of adjacent PBES and construction erection tolerances. Also, moving an entire superstructure or a bridge using slide-in operations or self-propelled modular transporters (SPMTs) for ABC imposes other challenges that depend on a bridge location and staging area for offsite construction of the bridge. Bridge moves impose dynamic forces on the bridge and supporting framing. These dynamic forces and their effects on bridge systems are not addressed in current design and construction guides. To help bridge owners, fabricators, and contractors to successfully use PBES and bridge moves for ABC, these challenges need to be addressed immediately. The objectives of this research were to develop (1) AASHTO bridge guidelines for (a) fabrication and erection tolerances for PBES and (b) tolerance acceptance criteria during bridge design, fabrication, and erection; and (2) AASHTO bridge guidelines to identify the dynamic forces resulting from bridge moves using slide-in operations and SPMTs and assess the effects of these forces on bridge systems. The research agency's final report that documents the entire research effort is available as NCHRP Web-Only Document 243: Recommended Guidelines for Prefabricated Bridge Elements and Systems Tolerances and Recommended Guidelines for Dynamic Effects for Bridge Systems at: http://www.trb.org/Main/Blurbs/177187.aspx. The Proposed Guidelines are available at: (1) Proposed Guidelines for Prefabricated Bridge Elements and Systems Tolerances http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP12-98_AppendixC-ToleranceGuide.pdf (2) Proposed Guidelines for Dynamic Effects for Bridge Systems http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP12-98_AppendixD-DynamicGuide.pdf

Language

  • English

Project

  • Status: Completed
  • Funding: $300000
  • Contract Numbers:

    Project 12-98

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Dekelbab, Waseem

  • Performing Organizations:

    CME Associates, Incorporated

    ,    
  • Principal Investigators:

    Culmo, Michael

  • Start Date: 20140520
  • Expected Completion Date: 20170630
  • Actual Completion Date: 20170630
  • Source Data: RiP Project 38183

Subject/Index Terms

Filing Info

  • Accession Number: 01547914
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 12-98
  • Files: TRB, RiP
  • Created Date: Dec 17 2014 1:00AM