ECONOMIC COMPARISON AND DESIGN OF HPS-485W HYBRID GIRDERS FOR THE IL 47 BRIDGE

The existing IL 47 bridge over the Illinois River is both structurally deficient and functionally obsolete. The proposed four-lane structure is a five-span continuous, composite, plate girder bridge with a 123 m main span for a total length of 525 m. The design incorporates hybrid girder sections over the piers utilizing High Performance Steel (HPS) 485W flanges with Grade 345W webs and span sections using Grade 345W steel throughout. Long spans coupled with staged construction requirements presented several design challenges. This paper addresses hybrid girder design using HPS 485W as compared with conventional girder designs, bolted splices in high moment and composite regions according to AASHTO 1999 Interim Specifications and staged construction with large differential deflections.

• Supplemental Notes:
  • Page range: 21-1 through 21-10.
• Corporate Authors:

  National Steel Bridge Alliance

  1405 North Lilac Drive, Suite 212
  Golden Valley, MN  United States  55422-4528
• Authors:
  • Ritchie, J
  • Mei, H T
• Conference:
  • 2001 World Steel Bridge Symposium
  • Location: Chicago, Illinois
  • Date: 2001-10-2 to 2001-10-5
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 10p

Subject/Index Terms

• TRT Terms: Bridge design; Composite structures; Construction; Continuous girder bridges; Deflection; Flanges; Long span bridges; Plate girder bridges; Steel; Webbing
• Uncontrolled Terms: Bolted splices; High performance steel; Staged construction
• Geographic Terms: Illinois River
• Subject Areas: Bridges and other structures; Construction; Design; Highways; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00924151
• Record Type: Publication
• Files: TRIS
• Created Date: May 14 2002 12:00AM