Evaluation of the Need for Longitudinal Median Joints in Bridge Decks on Dual Structures

Research Project

divider

Evaluation of the Need for Longitudinal Median Joints in Bridge Decks on Dual Structures

Image: Underside view of longitudinal median joints in bridge deck

Longitudinal median joints under bridge deck

Image: Diagonal cracks at the corner of a bridge deck

Diagonal cracks at the corner of a bridge deck

Researcher(s)

Principal investigators: Brent Phares, 515-294-5879, bphares@iastate.edu (project list), Iowa State University

Project status

Completed

Start date: 05/01/13
End date: 09/30/15

Publications

Report: September 2015, Evaluation of the Need for Longitudinal Median Joints in Bridge Decks on Dual Structures 10.26 mb (*pdf)

Related publications: Evaluation of the Need for Longitudinal Median Joints in Bridge Decks on Dual Structures 290.97 kb *pdf September 2015

*To read pdf files, you may need to download the free Adobe Acrobat Reader.

Sponsor(s)/partner(s)

Sponsor(s): Iowa Department of Transportation
Iowa Highway Research Board

About the research

Abstract:

The primary objective of this project was to determine the effect of bridge width on deck cracking in bridges. Other parameters, such as bridge skew, girder spacing and type, abutment type, pier type, and number of bridge spans, were also studied. To achieve the above objectives, one bridge was selected for live-load and long-term testing. The data obtained from both field tests were used to calibrate a three-dimensional (3D) finite element model (FEM). Three different types of loading—live loading, thermal loading, and shrinkage loading—were applied. The predicted crack pattern from the FEM was compared to the crack pattern from bridge inspection results. A parametric study was conducted using the calibrated FEM.

The general conclusions/recommendations areas follows:

2711 S. Loop Drive, Suite 4700, Ames, Iowa 50010-8664
Phone: 515-294-9501 ~ Fax: 515-294-0467
The Bridge Engineering Center is administered by Iowa State University's Institute for Transportation.

Bridge Engineering Center logo

Timber Bridge Program Structural Health Monitoring Current Projects Completed Projects About BEC Staff Students Related Links

Iowa State University logo and link