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Steel Girder Bridge with RC Deck Retrofit from Non-Composite to Composite Behavior

 Steel Girder Bridge with RC Deck Retrofit from Non-Composite to Composite Behavior
Author(s): ,
Presented at IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016, published in , pp. 1956-1963
DOI: 10.2749/stockholm.2016.1964
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In the past, a number of steel girder-reinforced concrete deck bridges on county roads in the United States have been built as non-composite. Most of these bridges currently have load postings limi...
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Bibliographic Details

Author(s): (University of Kentucky, Lexington, KY, USA)
(University of Kentucky, Lexington, KY, USA)
Medium: conference paper
Language(s): English
Conference: IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016
Published in:
Page(s): 1956-1963 Total no. of pages: 8
Page(s): 1956-1963
Total no. of pages: 8
Year: 2016
DOI: 10.2749/stockholm.2016.1964
Abstract:

In the past, a number of steel girder-reinforced concrete deck bridges on county roads in the United States have been built as non-composite. Most of these bridges currently have load postings limiting the capacity of bus and truck loads on their roadways. Recent research showed that post installed high strength bolts could be used as shear connectors in rehabilitation work to achieve partial composite design by deploying 30% to 50% of the connectors typically required for a full composite design. This paper presents details on the analysis, design, and field application of post-installed shear connectors on a non-composite concrete deck steel girder bridge in Kentucky. In order to minimize traffic disruption and construction costs, the shear connectors were inserted on the bottom side of the deck through the top flange of the steel girder. While the load rating increased by 132%, field tests conducted before and after installation of the shear connectors showed that the bridge’s live load deflections were reduced by more than 27%.

Keywords:
shear connectors composite deck field testing Bridge Decks Steel Girders