HORIZONTALLY CURVED STEEL GIRDERS - FABRICATION AND DESIGN

THE USE OF HORIZONTALLY CURVED STEEL GIRDERS IN BRIDGE CONSTRUCTION IS CREATING INTEREST BECAUSE: (1) OF INCREASING DEMAND FOR HIGHWAY INTERCHANGES IN URBAN AREAS, (2) THE USE OF STRAIGHT GIRDERS AS CHORDS OF SHORT RADIUS SURVES REQUIRE SIMPLE SPANS WITH RELATIVELY CLOSE SUPPORTS AND NUMEROUS EXPANSION JOINTS AND BEARING DEVICES, (3) AESTHETIC CONSIDERATIONS HAVE LED TO A PREFERENCE FOR CURVED GIRDERS, AND (4) CURVED GIRDERS PROMOTE A UNIFORMITY OF CONCRETE DECK WORK THORUGH SIMPLICITY IN ARRANGEMENT, DETAILS AND CONSTRUCTION. FABRICATION METHODS OF CUTTING TO CURVE AND THE HEAT CURVING METHOD ARE OUTLINED. ALL DESIGN CONSIDERATIONS OF ALL COMPONENTS OF A STEEL CURVED GIRDER BRIDGE ARE DISCUSSED. THE FOLLOWING GUIDELINES APPROPRIATE IN THE DESIGN OF EXPANSION BEARING DEVICES ARE RECOMMENDED: (1) INVESTIGATE THE MOVEMENTS AND THEIR RELATIONSHIP TO ONE ANOTHER, (2) PROVIDE FOR ROTATION DUE TO APPLIED LOADS BY PLACING THE HINGE RADIALLY, (3) INVESTIGATE THE ABILITY OF A CONVENTIONAL TYPE SHOE ACTING IN THE PLANE OF THE HINGE MOVEMENT - TANGENT TO THE CURVE - TO SATISFY THE TRANSVERSE MOVEMENTS REQUIRED DUE TO TEMPERATURE, AND (4) IF A CONVENTIONAL SHOE CANNOT BE UTILIZED BECAUSE OF THE TRANSVERSE MOVEMENTS, DESIGN A SPECIAL BEARING DEVICE THAT WILL SATISFY THE COMPOUND MOVEMENTS.

• Supplemental Notes:
  • Vol 4, No 3, PP 107-112, 15 FIG
• Authors:
  • Thatcher, W M
• Publication Date: 1967-7

Media Info

• Serial:
  • Engineering J, Am Inst Steel Constr

Subject/Index Terms

• TRT Terms: Aesthetics; Bridge bearings; Bridge decks; Bridge design; Bridges; Concrete; Construction; Curves (Geometry); Expansion joints; Fabrication; Girders; Interchanges; Metal bridges; Standardization; Steel bridges; Structural design; Temperature; Urban highways
• Uncontrolled Terms: Footwear; Horizontal curvature; Transverse movement
• Old TRIS Terms: Curved steel girders
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00208355
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 16 1994 12:00AM