Repair of steel beam/girder ends with ultra high-strength concrete - phase II.

Details

• Creators:
  Zaghi, Arash Esmaili ; Wille, Kay ; Zmetra, Kevin ; McMullen, Kevin ; Kruszewski, Dominic ; Hain, Alexandra
• Corporate Creators:
  University of Connecticut. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Connecticut. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge decks
  • Corrosion
  • Cost accounting
  • Durability
  • Girders
  • Leakage
  • Optimization
  • Structural analysis
  • Ultra high performance concrete
  • Ultra-high performance concrete (UHPC)
  More +
• Publication/ Report Number:
  CT-2295-1-17-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Interim Report, June 2015 - December 2016
• Corporate Publisher:
  Connecticut. Dept. of Transportation
• Abstract:
  A novel repair method has been developed at the University of Connecticut for corroded steel bridge girder ; ends. The repair method consists of encasing the corroded steel area with UHPC. The UHPC panel is bonded ; to the steel girder using headed shear studs welded to the uncorroded portions of the web and flange. The ; repair provides a secondary load path to restore the bearing and shear strength of the girder which was ; reduced due to corroded section loss. This research project investigates the application and performance of ; this repair for field implementation. Full-scale experimental tests will be conducted on plate girders with ; reduced steel sections to simulate corrosion damage. The plate girder specimens will be repaired using ; various repair geometries. Small-scale push-off tests will be conducted on shear studs welded to the web of a ; girder when embedded in UHPC. These tests are conducted to analyze the behavior of the shear studs in ; UHPC and to develop a formulation for the stud capacities. In addition to experimental strength tests, durability ; test will be conducted on the full-scale plate girders and push-off specimens to determine various field ; requirements and constraints for the repair. The results of both the large-scale and small-scale test will be ; used to develop and calibrate finite element models which will be used to test and evaluate the performance of ; the repair for a variety of different existing conditions and repair geometries for full-scale bridges in need of ; girder end repairs. A design guide will be developed to allow engineers to develop and implement this repair ; method for different designs. Collaboration is ongoing to assist CTDOT in a field implementation of the repair ; for a bridge with extensive corrosion of steel girder ends.
  More +
• Format:
  PDF
• Funding:
  SPR-2295
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32461/dot_32461_DS1.pdf
• File Type:
  [PDF - 9.73 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:fb135fae6256baec918ecb6e53b7d8f03ae593c6f7e6e1ed9523716ae24f543dae2a39b4580b802602d23cac73579e19119061d1080884873b56959159d8fdc4