GIRDERS RELIEVE SPAN'S ANCHORAGE
A $12.2 million reanchoring project on Manhattan Bridge in New York City is described. The project will correct corrosion problems in the cable-and-eyebar anchors. The eyebars are located in an 8-ft-wide chamber and extend down into a massive concrete base on the Manhattan side of the bridge. Inspections revealed that the eyebars in the chambers housing the two innermost cables were severely corroded from salt-laden water seeping through the chamber roof from the roadway above. A water-diverting ceiling placed above the cables in 1983 did not prevent further corrosion of the eyebars. The eyebars were sandblasted to remove corrosion. The corroded steel had lost an average of 27% of their cross section, and in some places the loss was as high as 40%. Also, more than 900 wires were corroded. The selected rehabilitation scheme required the creation of four 55-ft-long, 3-ft-dia access tunnels by drilling through the 5-ft-thick chamber walls to accommodate the two new girders. Details of the rehabilitation are summarized.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/08919526
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Corporate Authors:
McGraw-Hill, Incorporated
330 West 42nd Street
New York, NY United States 10036 - Publication Date: 1988-10-6
Media Info
- Pagination: p. 17
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Serial:
- Engineering News-Record
- Volume: 221
- Issue Number: 14
- Publisher: McGraw-Hill, Incorporated
- ISSN: 0891-9526
Subject/Index Terms
- TRT Terms: Anchorages; Bridges; Corrosion; Driver rehabilitation; Girders; Sand blasting
- Uncontrolled Terms: Rehabilitation
- Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00476753
- Record Type: Publication
- Files: TRIS
- Created Date: Oct 31 1988 12:00AM