Seismic performance of circular reinforced concrete bridge columns constructed with grade 80 reinforcement

This project assessed the use of ASTM A706 Grade 80 reinforcing bars in reinforced concrete columns. Grade 80 is not currently allowed in reinforced concrete columns due to lack of information on the material characteristics and column performance. Six half-scale, circular columns were tested: three constructed with Grade 60 reinforcement and three constructed with Grade 80 reinforcement. Designs followed standard design methodologies used by State Highway Agencies (including AASHTO). Results indicate that columns constructed with Grade 80 reinforcement performed similar to columns constructed with conventional ASTM A706 Grade 60 reinforcement. Computational modeling was performed using OpenSees for all six columns. Results indicate that the columns constructed with Grade 80 reinforcement achieved similar resistance and displacement and curvature ductility values when compared with the reference columns constructed with Grade 60 reinforcement. The columns constructed with Grade 60 reinforcement showed larger hysteretic energy dissipation than the columns constructed with Grade 80 reinforcement., Introduction -- Literature review -- Experimental program and specimen design -- Materials used in construction of test specimens -- Experimental results : columns C1, C2, C3, and C4 -- Column C5 and C6 experimental results -- Analysis of experimental data -- Computational modeling -- Summary and conclusions., This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program.  It is for informational purposes and may not be suitable for legal purposes., Title from PDF title page (viewed on March 28, 2016)., "FHWA-OR-RD-15-02"--Technical report documentation page., Includes bibliographical references (pages 239-242)., Sponsored by Oregon Department of Transportation; Pacific Northwest Transportation Consortium SRS 500-610, Mode of access: Internet from the Oregon Government Publications Collection., Text in English., Final report
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This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.
Abstract/Description: This project assessed the use of ASTM A706 Grade 80 reinforcing bars in reinforced concrete columns. Grade 80 is not currently allowed in reinforced concrete columns due to lack of information on the material characteristics and column performance. Six half-scale, circular columns were tested: three constructed with Grade 60 reinforcement and three constructed with Grade 80 reinforcement. Designs followed standard design methodologies used by State Highway Agencies (including AASHTO). Results indicate that columns constructed with Grade 80 reinforcement performed similar to columns constructed with conventional ASTM A706 Grade 60 reinforcement. Computational modeling was performed using OpenSees for all six columns. Results indicate that the columns constructed with Grade 80 reinforcement achieved similar resistance and displacement and curvature ductility values when compared with the reference columns constructed with Grade 60 reinforcement. The columns constructed with Grade 60 reinforcement showed larger hysteretic energy dissipation than the columns constructed with Grade 80 reinforcement.
Subject(s): n-us-or
Earthquake resistant design -- Oregon
Reinforced concrete -- Oregon -- Testing
Steel, High strength
Columns, Concrete
earthquake performancehigh-strength steelreinforced concrete columns
Date Issued: 2014