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Steel bridge girders with prestressed composite tension flanges
Two steel delta girders, with prestressing strands embedded in concrete along their tension flanges, span 150 ft to carry 28-ft precast-slab deck for bridge in northwest Washington, near Bellingham; delta top has flange 42 in. wide; at outside edges of 24-in.wide bottom flange, 6×4-in. angles are turned up and in to form box to hold concrete around 36 tensioning strands of 1/2-in. diam; girders were fabricated in steel shop, then moved to concrete prestressing plant for tendons and concrete protection; precast deck slabs, 9×28 ft and 7 in. thick, have eight openings through them over each girder for welded-on studs; slabs are held 1 in. above steel while concrete is placed through openings around studs to support slabs and provide for shear.
Steel bridge girders with prestressed composite tension flanges
Two steel delta girders, with prestressing strands embedded in concrete along their tension flanges, span 150 ft to carry 28-ft precast-slab deck for bridge in northwest Washington, near Bellingham; delta top has flange 42 in. wide; at outside edges of 24-in.wide bottom flange, 6×4-in. angles are turned up and in to form box to hold concrete around 36 tensioning strands of 1/2-in. diam; girders were fabricated in steel shop, then moved to concrete prestressing plant for tendons and concrete protection; precast deck slabs, 9×28 ft and 7 in. thick, have eight openings through them over each girder for welded-on studs; slabs are held 1 in. above steel while concrete is placed through openings around studs to support slabs and provide for shear.
Steel bridge girders with prestressed composite tension flanges
Civ Eng (NY)
Hadley, H.M. (author)
1966
3 pages
Article (Journal)
English
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