A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Precast Prestressed Concrete Double-T Beams for Short-Span Bridges
Short-span bridges (having span lengths from 25 to 60 ft) account for half the publicly owned structures in New York State, which suggests the potential benefits for the State Department of Transportation and others from further economies in construction of bridges in this span range. Two sets of standard sections and details are developed in this report for precast double-T beams for short-span bridges: (1) for use with a non-composite asphalt wearing surface for rapid construction, and (2) for use with a cast-in-place composite deck for enhanced durability. The proposed standards are intended as viable alternatives to voided slabs (the current New York State standard for precast short-span bridges), based on practicality and economic advantages. Details for rapid construction and durability of double-T beam systems used with asphalt wearing surfaces include (1) standard precast prestressed beams, (2) grouted longitudinal shear keys, (3) transverse post-tensioning of the beams through their flanges, (4) precast post-tensioned diaphragms, (5) waterproofing membranes, and (6) fixed and expansion supports.
Precast Prestressed Concrete Double-T Beams for Short-Span Bridges
Short-span bridges (having span lengths from 25 to 60 ft) account for half the publicly owned structures in New York State, which suggests the potential benefits for the State Department of Transportation and others from further economies in construction of bridges in this span range. Two sets of standard sections and details are developed in this report for precast double-T beams for short-span bridges: (1) for use with a non-composite asphalt wearing surface for rapid construction, and (2) for use with a cast-in-place composite deck for enhanced durability. The proposed standards are intended as viable alternatives to voided slabs (the current New York State standard for precast short-span bridges), based on practicality and economic advantages. Details for rapid construction and durability of double-T beam systems used with asphalt wearing surfaces include (1) standard precast prestressed beams, (2) grouted longitudinal shear keys, (3) transverse post-tensioning of the beams through their flanges, (4) precast post-tensioned diaphragms, (5) waterproofing membranes, and (6) fixed and expansion supports.
Precast Prestressed Concrete Double-T Beams for Short-Span Bridges
O. Hag-Elsafi (author)
1998
44 pages
Report
No indication
English
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