Live-Load Distribution Factors for Composite Bridges with Precast Inverted T-Beams

Short- to medium-span composite bridges constructed with adjacent precast inverted T-beams and cast-in-place topping are intended to provide a higher degree of resistance against reflective cracking and time-dependent effects compared with voided slab and adjacent box beam systems. This paper presents the results of an analytical and experimental study performed on the first inverted T-beam bridge in Virginia. The purpose of the investigation was to quantify live-load distribution factors for shear and moment for the composite precast inverted T-beam bridge. A finite-element model of Phase I of the bridge was created and the live-load distribution factors were analytically determined. Additionally, live-load tests using a stationary truck were performed with the purpose of quantifying live-load distribution factors for moment and validating the results from the finite-element analyses. The live-load tests featured four transverse truck positions on the bridge. It is concluded that it is appropriate to estimate live-load distribution factors using provisions for cast-in-place slab-span bridges.

• Record URL:
  https://doi.org/10.1061/(ASCE)CF.1943-5509.0000901
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08873828
• Supplemental Notes:
  • © 2016 American Society of Civil Engineers.
• Authors:
  • Menkulasi, Fatmir
  • Roberts Wollmann, Carin L
  • Cousins, Tommy
• Publication Date: 2016-12

Language

• English

Media Info

• Media Type: Web
• Pagination: 04016045
• Serial:
  • Journal of Performance of Constructed Facilities
  • Volume: 30
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0887-3828
  • Serial URL: http://ascelibrary.org/toc/jpcfev/27/1

Subject/Index Terms

• TRT Terms: Bridge decks; Cast in place concrete; Composite structures; Cracking; Laboratory tests; Live loads; Long span bridges; Precast concrete
• Geographic Terms: Virginia
• Subject Areas: Bridges and other structures; Construction; Design; Highways;

Filing Info

• Accession Number: 01601992
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Jun 20 2016 9:39AM