Field Monitoring of Curved Girder Bridges with Integral Abutments
Project involves all of the bridges at the I-80/I-235/I-35 interchange in Des Moines, Iowa
Start date: 06/01/08
End date: 01/01/14
Report: Field Monitoring of Curved Girder Bridges with Integral Abutments (15.24 mb pdf) January 2014
- Field Monitoring of Curved Girder Bridges with Integral Abutments 149.17 kb pdf (Tech transfer summary) Jan 2014
- Evaluation of Bridge Movement Measurement Using GPS 442.85 kb pdf (Tech transfer summary) Jan 2012
- Federal Highway Administration Transportation Pooled Fund
- Iowa Department of Transportation
- Ohio Department of Transportation
- Pennsylvania Department of Transportation
- Wisconsin Department of Transportation
About the research
Nationally, there is concern regarding the design, fabrication, and erection of horizontally-curved steel girder bridges due to unpredicted girder displacements, fit-up, and locked-in stresses. One reason for the concerns is that up to one-quarter of steel girder bridges are being designed with horizontal curvature. The concerns are significant enough that a National Cooperative Highway Research Program (NCHRP) research problem statement was developed and given high priority for funding.
It is also noted that an urgent need exists to reduce bridge maintenance costs by eliminating or reducing deck joints. This can be achieved by expanding the use of integral abutments to include curved girder bridges.
The long-term objective of this effort is to establish guidelines for the use of integral abutments with curved girder bridges. The primary objective of this work was to monitor and evaluate the behavior of six in-service, horizontally-curved, steel-girder bridges with integral and semi-integral abutments. In addition, the influence and behavior of fixed and expansion piers were considered.