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.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/08873828
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Supplemental Notes:
- © 2016 American Society of Civil Engineers.
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Authors:
- Menkulasi, Fatmir
- Roberts Wollmann, Carin L
- Cousins, Tommy
- Publication Date: 2016-12
Language
- English
Media Info
- Media Type: Web
- Pagination: 04016045
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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