Seismic Retrofits of Reinforced Concrete Columns Using Titanium Alloy Bars

Details

• Alternative Title:
  Seismic Retrofits for Square Reinforced Concrete Columns Using Titanium Alloy Bars Cover title
• Creators:
  Higgins, Christopher ; Barbosa, Andre ; Shrestha, Sharoo ; Lostra, Mackenzie ; Belejo, Andre F. V.
• Corporate Creators:
  Oregon State University. School of Civil and Construction Engineering
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Bars (Building materials)
  • Bridge design
  • Columns
  • Earthquake resistant design
  • Laboratory tests
  • Reinforced concrete
  • Retrofitting
  • Titanium alloys Seismic
  • Columns
  • Tests
• Publication/ Report Number:
  FHWA-OR-RD-20-05;SPR-784
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report 2015-2018
• Corporate Publisher:
  Oregon State University. Dept. of Civil, Construction, and Environmental Engineering
• Abstract:
  To explore their potential for seismic retrofitting of seismically deficient RC columns using titanium alloy bars (TiABs), experimental tests were undertaken in the laboratory using full-scale specimens. The specimens were designed to have vintage details and proportions that are widely recognized as being seismically deficient. Some specimens were retrofitted with TiABs to increase the confinement and provide alternate load paths for flexural resistance. Soil-structure interactions were considered for spread footing and timber pile supported footing. Specimens were subjected to reversed cyclic lateral loading and the results of these experiments are reported. Analytical methods were used to predict the individual specimen response and to conduct nonlinear time-history response analyses of bridge models with and without TiAB retrofits. The results and studies indicate that TiAB retrofits do effectively improve the seismic performance of poorly detailed RC columns. This information can be used to develop design recommendations.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/55816/dot_55816_DS1.pdf
• File Type:
  [PDF - 20.03 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b4d7b8d58f79633a941012c52fb44b41a80732e82c6317c090ee8bdde925c4e77fe198a6d9d86a1483a884d8f784ea7f0ce0b6560c998e7f0fdbc9b71a2eaee3