ELASTIC TORSIONAL STIFFNESS OF PRESTRESSED CONCRETE AASHO GIRDERS
TORSIONAL STIFFNESS VALUES RELATING TO FOUR PRESTRESSED CONCRETE AASHO GIRDERS HAVE BEEN CALCULATED BY THE USE OF FINITE DIFFERENCES. TORSIONAL STIFFNESS VALUES HAVE BEEN CALCULATED FOR THE GIRDERS THEMSELVES AND FOR THE GIRDERS PLUS 7 IN. CONCRETE SLABS, BOTH INTERCONNECTED AND ACTING SEPARATELY BUT WITH THE GIRDERS AND SLABS ROTATING THROUGH THE SAME ANGLE. THE VARIOUS WIDTHS OF THE 7-IN. SLABS CONSIDERED FALL INTO TWO MAJOR CATEGORIES' /A/ MODULUS OF ELASTICITY OF THE SLAB, E SUB S EQUAL TO MODULUS OF ELASTICITY OF THE GIRDER, E SUB G, /B/ MODULUS OF ELASTICITY OF THE SLAB EQUAL TO 0.77 TIMES THE MODULUS OF ELASTICITY OF THE GIRDER. GRAPHS RELATING THE TORSIONAL STIFFNESS VALUES, K, TO VARIOUS SLAB WIDTHS FOR THE FOUR AASHO GIRDERS HAVE BEEN PRODUCED. THE STIFFNESS VALUES READ OFF THE GRAPHS MAY BE SUED DIRECTLY IN THE DESIGN OF BRIDGE DECKS WHEN, FOR EXAMPLE, THE GUYON-MASSONNET OR HENDRY AND JAEGER LOAD DISTRIBUTION THEORIES ARE USED. NEWTONS INTERPOLATION FUNCTION HAS BEEN USED TO CALCULATE TORSIONAL SHEAR STRESSES . /AUTHOR/
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Supplemental Notes:
- Vol 62, No 4, PP 479-491
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Authors:
- Tamberg, K C
- Publication Date: 1965-4
Media Info
Subject/Index Terms
- TRT Terms: Bridge decks; Bridge design; Bridges; Elasticity (Mechanics); Finite differences; Girders; Graphics; Modulus of elasticity; Prestressed concrete; Slabs; Stiffness; Structural design; Torsion
- Uncontrolled Terms: Graphical analysis
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00208253
- Record Type: Publication
- Files: TRIS
- Created Date: May 18 1994 12:00AM