Seismic retrofit of cruciform-shaped columns in the Aurora Avenue Bridge using FRP wrapping.

Details

• Creators:
  McLean, David I. ; Walkenhauer, Brian J.
• Corporate Creators:
  Washington State University. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Washington (State). Department of Transportation
• Subject/TRT Terms:
  • Earthquake resistant design
  • Bridges
  • Columns
  • Concrete
  • Fiber reinforced plastics
  • Earthquake resistant design
  • Bridges--Design and construction
  • Columns, Concrete--Protection
  • Columns, Concrete--Maintenance and repair
  • Fiber-reinforced plastics
• Publication/ Report Number:
  WA-RD 753.1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington
• Edition:
  Research report.
• Corporate Publisher:
  Washington (State). Department of Transportation
• Abstract:
  Experimental tests were conducted on seven 1/3-scale column specimens to evaluate the vulnerabilities of existing cruciform-shaped columns and to develop appropriate retrofit measures that address the identified vulnerabilities. The specimens represented both solid and split columns in the Aurora Avenue Bridge in Seattle, Washington. The as-built specimens failed at low ductility levels due to shear distress. Fiber reinforced polymer (FRP) jackets with FRP inserts to anchor the jackets in the column reentrant corners along with steel confinement collars to provide confinement in the hinging regions were used to retrofit the column specimens. The retrofitted specimens developed plastic hinging in the column, with enhanced strength, energy and ductility capacities. Guidelines were presented for designing the various components of the retrofit measures.
• Format:
  PDF
• Funding:
  T4120-15
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18443/dot_18443_DS1.pdf
• File Type:
  [PDF - 18.14 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c31ff6a8d7913341a8ebf9fc14e86b6b88c103b99f1700b6f35ce09c9e6cb69b