CONTINUOUS INTEGRAL DECK CONSTRUCTION: A RATIONAL APPROACH TO PLACING STRUCTURAL DECK ON THREE-SPAN CONTINUOUS BRIDGE UNITS

ESTABLISHMENT OF STRUCTURAL CONCRETE SLABS ON THREE-SPAN CONTINUOUS STRUCTURES IS USUALLY ACCOMPLISHED BY SEGMENTAL PLACEMENT. THIS RESULTS IS DIFFICULTY IN OBTAINING PROPERLY CONSTRUCTED, SMOOTH RIDING SURFACES. WHEN COMPOSITE DESIGN AND CONSTRUCTION WAS ADOPTED, THE SEGMENTAL PRACTICE INTRODUCED OTHER UNDESIRABLE SIDE EFFECTS. A REQUEST WAS RECEIVED TO PLACE THE STRUCTURAL SLAB WITH INTEGRAL WEARING COURSE ON THE THREE-SPAN CONTINUOUS UNITS ON THE BRUCKNER EXPRESSWAY IN THE BRONX, NEW YORK. THIS IS A DIVIDED STRUCTURE WITH AN OVER-ALL WIDTH OF 94 FEET. EACH STRUCTURE HAS A MINIMUM TRAVELWAY OF 37 1/2 FEET. THERE IS AN 11-FOOT MALL BETWEEN THE TRAVELWAYS AND EACH THREE-SPAN CONTINUOUS UNIT IS APPROXIMATELY 210 FEET LONG. A FIELD RESEARCH PROGRAM WAS ESTABLISHED SO THAT DATA COULD BE OBTAINED RELATIVE TO DEFLECTION OF THE STRINGERS (THEORETICAL VS. ACTUAL), LOCATION OF THE REINFORCING STEEL TOGETHER WITH THE REQUIRED COVER, AND CONTROLLED ADDITION OF THE RETARDING ADMIXTURE, AS WELL AS A COMPLETE PHYSICAL REPORT OF THE CONCRETE PLACED FOR THIS OPERATION. THE RESULTS OBTAINED HAVE BEEN SIGNIFICANT IN THAT THIS STRUCTURE, WHICH IS 1 MILE LONG, HAS EXHIBITED MINIMAL MINUTE CRACKING IN BUT A FEW OF THE MANY THREE-SPAN CONTINUOUS UNITS. THE RIDING QUALITY OF THIS STRUCTURES IS EXCEPTIONAL SINCE THE AVERAGE FINAL FIELD PROFILE VARIES FROM THE THEORETICAL PROFILE BY ONLY 0.020 FEET.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/362/362-002.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Britton, H B
• Conference:
  • 41st Annual Meeting of the Highway Research Board
  • Location: Washington DC, United States
  • Date: 1962-1-8 to 1962-1-12
• Publication Date: 1962

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 8-16
• Monograph Title: Economics and procedures for construction of concrete bridges
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 362
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bridge decks; Bridge design; Bridges; Composite construction; Concrete; Continuous structures; Cracking; Deflection; Field studies; Location; Reinforcing steel; Retarders (Chemistry); Riding qualities; Slabs; Stringers; Structural design
• Uncontrolled Terms: Concrete cracking
• Old TRIS Terms: Placement
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208434
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: May 13 1994 12:00AM