SEISMIC STRENGTHENING OF COLUMN-PIER-CAP CONNECTIONS
Many bridges constructed in the 1960s in regions of high seismic risk have column-pier-cap connections with inadequate column bar development and no shear reinforcement in the joint region. The study described in this paper focuses on highway bridges built on Interstate 80 in the Reno, Nevada, area during the 1960s. Two 0.4-scale specimens representing the essential features of the column-pier-cap connections in these bridges were constructed and tested. One test showed that the as-built specimen had little energy dissipation capacity and failed at less than 1% drift. A second specimen was used to test a potential strengthening technique. The technique included increasing pier-cap depth, adding a concrete bolster to the joint, and placing a steel jacket around the column. After strengthening, a plastic hinge formed in the column, the joint damage was minimized, and the energy dissipation capacity increased by a factor of 5.
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- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309064694
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1624, Structural Analysis and Design: Bridges, Culverts, and Pipes.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Sanders, D H
- Saiidi, M S
- MARTIN, T
- Publication Date: 1998
Language
- English
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: p. 93-100
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Serial:
- Transportation Research Record
- Issue Number: 1624
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Bridge piers; Columns; Dissipation; Earthquake resistant design; Highway bridges; Jacketing (Strengthening); Joints; Material reinforcement; Networks; Retrofitting; Scale models; Steel; Strength of materials; Structural strengthening
- Uncontrolled Terms: Joints; Model tests; Pier caps
- Geographic Terms: Reno (Nevada)
- Subject Areas: Bridges and other structures; Design; Energy; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00756076
- Record Type: Publication
- ISBN: 0309064694
- Files: TRIS, TRB
- Created Date: Nov 3 1998 12:00AM