UPGRADING OF NONDUCTILE REINFORCED CONCRETE FRAME CONNECTIONS

An innovative seismic upgrading technique for existing reinforced frame connections constructed prior to the 1970s using corrugated steel jacketing is proposed and evaluated. Six, one-third scale reinforced concrete beam-to-column connections were tested under quasi-static cyclic loading to study their seismic performance. The investigated test parameters include the amount of joint and column transverse reinforcement, corrugated steel sheet thicknesses, and jacketing of column only, or of both column and beam. Test results demonstrated that existing reinforced concrete frame connections upgraded using corrugated steel jackets performed satisfactorily when subjected to high cyclic load levels. The corrugated steel jacket was found to be an effective system of upgrading as it increases the joint shear strength and the energy dissipation capacity. A method for the design of the corrugated steel jacket thickness and depth of corrugation is formulated.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Supplemental Notes:
  • Page range: pp 1001-1010
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Biddah, A
  • Ghobarah, A
  • Aziz, T S
• Publication Date: 1997-8

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References;
• Pagination: 10 p.
• Serial:
  • Journal of Structural Engineering
  • Volume: 123
  • Issue Number: 8
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Beams; Columns; Corrugated metals; Earthquake resistant design; Innovation; Jacketing (Strengthening); Joints; Modernization; Reinforced concrete bridges; Repeated loads; Retrofitting; Static loads; Steel sheets; Strength of materials; Structural analysis; Structural mechanics; Structural strengthening; Thickness; Transverse reinforcement
• Uncontrolled Terms: Structural behavior
• Old TRIS Terms: Beams (Structural); Frame connections; Static loading; Thickness design
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00740123
• Record Type: Publication
• Contract Numbers: PB92-0702
• Files: TRIS
• Created Date: Aug 15 1997 12:00AM