COMPUTER DESIGN AND ANALYSIS OF STEEL BOX GIRDER BRIDGES FOR TRANSIT STRUCTURES

The purpose of this study is to develop design criteria and a computer program which can be used to design/analyze straight or curved single or multi composite box girder bridges for transit structures. The resulting computer program will perform an analysis or design of a single prismatic or nonprismatic straight or curved box girder when subjected to a specified train loading. The train loading may be any series of coupled units. The box section is a single unit of the bridge or a member of a multiple box system. The box man be non-composite or composite construction. The section can have internal transverse diaphragms spaced along the box and top lateral bracing. Output contains influence line ordinates, stresses on top and bottom at locations along the span due to: 1) dead load; and 2) superimposed dead load and live load. Force envelopes including moment, shears, torsion and bimoment are given for load combinations. Influences due to bending, torsion, warping and distortion are included. Stress envelope is given for use in fatigue design. Applicable specifications are utilized to establish allowable stresses, web and flange stiffening requirements and shear stud spacing. Resulting girder deflections and rotations, due to sequential concrete placements, can also be determined for specified length of pours. Composite/non-composite action may be assumed after the concrete hardens. The full woking specifications, utilized in this computer program, is given in the companion report "Specifications Manual for Steel Box Girder Transit Structures", UMTA-MD-06-0076-82-1.

• Corporate Authors:

  University of Maryland, College Park

  Department of Civil and Environmental Engineering
  College Park, MD  United States  20742
• Authors:
  • Heins, C P
  • Shyu, J Y
• Publication Date: 1982-6

Media Info

• Pagination: 115 p.

Subject/Index Terms

• TRT Terms: Box girders; Computer programs; Curved bridges; Dynamic loads; Elevated structures; Girder bridges; Metal bridges; Steel bridges; Structural design
• Uncontrolled Terms: Curved box girders
• Subject Areas: Bridges and other structures; Construction; Design; Geotechnology; Highways; Materials; Public Transportation; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00389758
• Record Type: Publication
• Report/Paper Numbers: UMTA-MD-06-0076-82-2Final Rpt.
• Contract Numbers: AW08-218-046
• Files: TRIS
• Created Date: Oct 30 1984 12:00AM