Use of Partially Prestressed Reinforced Concrete Columns to Reduce Post-Earthquake Residual Displacements of Bridges

To minimize residual displacements in reinforced concrete columns, a design is proposed whereby a longitudinal post-tensioning tendon replaces some of usual longitudinal mild reinforcing bars. The seismic performance of such partially prestressed, reinforced concrete columns is investigated through a series of earthquake simulator tests. The effects of unbonding of longitudinal mild reinforcement and providing a steel jacket are also investigated. The partially prestressed, reinforced concrete columns studied perform remarkably well under strong ground excitations. Very small permanent deformations are observed after the tests, especially when the longitudinal mild reinforcement is unbonded and a steel jacket is provided.

• Corporate Authors:

  Multidisciplinary Center for Earthquake Engineering Research

  State University of New York, 107 Red Jacket Quadrangle, P.O. Box 610025
  Buffalo, NY  United States  14261-0025
• Authors:
  • Mahin, Stephen
  • Sakai, Junichi
  • Jeong, Hyungil
• Conference:
  • Fifth National Seismic Conference on Bridges & Highways
  • Location: San Francisco CA, United States
  • Date: 2006-9-18 to 2006-9-20
• Publication Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Photos; References; Tables;
• Pagination: 12p
• Monograph Title: Fifth National Seismic Conference on Bridges and Highways: Innovation in Earthquake Engineering for Highway Structures

Subject/Index Terms

• TRT Terms: Bonding; Bridges; Columns; Deformation; Design; Dislocation (Geology); Earthquakes; Reinforced concrete; Simulation; Steel; Tendons
• Uncontrolled Terms: Jackets (Structures); Partially prestressed concrete; Reduction (Decrease); Seismic performance
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics;

Filing Info

• Accession Number: 01080803
• Record Type: Publication
• Report/Paper Numbers: B25
• Files: TRIS
• Created Date: Nov 15 2007 10:33AM