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Prestressed steel stringers solve bridge clearance problem
To fulfill depth limitations imposed on design of deck girder bridge, designers chose to use prestressed rolled girders; prestressing was accomplished by deflecting 36 WF 230 stringers and welding cover plates to top and bottom flanges; high-strength, T1 steel was used for bottom plates, A441 for top; induced residual stresses opposed to stresses caused by normal bridge loads in finished structure; computed stresses in hybrid welded girders were 53,000 psi in bottom plate, 20,000 psi in rolled girder, and 23,000 psi in top plate.
Prestressed steel stringers solve bridge clearance problem
To fulfill depth limitations imposed on design of deck girder bridge, designers chose to use prestressed rolled girders; prestressing was accomplished by deflecting 36 WF 230 stringers and welding cover plates to top and bottom flanges; high-strength, T1 steel was used for bottom plates, A441 for top; induced residual stresses opposed to stresses caused by normal bridge loads in finished structure; computed stresses in hybrid welded girders were 53,000 psi in bottom plate, 20,000 psi in rolled girder, and 23,000 psi in top plate.
Prestressed steel stringers solve bridge clearance problem
Civ Eng (NY)
Levine, L. (author) / McLoughlin, J. (author)
1967
2 pages
Article (Journal)
English
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