Design and Evaluation of a Single-Span Bridge Using Ultra-High Performance Concrete

Project Details
STATUS

Completed

START DATE

02/01/05

END DATE

09/30/09

RESEARCH CENTERS InTrans, CTRE
SPONSORS

Federal Highway Administration
Iowa Highway Research Board
Wapello County, Iowa

Researchers
Co-Principal Investigator
Terry Wipf

Faculty Affiliate

Co-Principal Investigator
Brent Phares

Bridge Research Engineer, BEC

Co-Principal Investigator
Sri Sritharan

Faculty Affiliate

Student Researcher(s)
Mark Giesmann
Brian Degen

About the research

This research describes an application of a newly-developed material called Ultra-High Performance Concrete (UHPC) to a single-span bridge. The two primary objectives of this research were to develop a shear design procedure for possible code adoption and to provide a performance evaluation to ensure the viability of the first UHPC bridge in the United States. Two other secondary objectives included defining material properties and understanding flexural behavior of a UHPC bridge girder. To obtain information in these areas, several tests were carried out including material testing, large-scale laboratory flexure testing, large-scale laboratory shear testing, large-scale laboratory flexure-shear testing, small-scale laboratory shear testing, and field testing of a UHPC bridge.

Experimental and analytical results of the described tests are presented. Analytical models to understand the flexure and shear behavior of UHPC members were developed using iterative computer-based procedures. Previous research is referenced explaining a simplified flexural design procedure and a simplified pure shear design procedure. This work describes a shear design procedure based on the Modified Compression Field Theory (MCFT), which can be used in the design of UHPC members. Conclusions are provided regarding the viability of the UHPC bridge and recommendations are made for future research.

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