Diaphragm Effects of Prestressed Concrete Girder Bridges: Review and Discussion
Publication: Practice Periodical on Structural Design and Construction
Volume 12, Issue 3
Abstract
Construction of intermediate diaphragms is an extra cost financially and in scheduling. Practice of intermediate diaphragms in prestressed concrete bridges is still controversial, and the practice in each state is different. This paper presents a review of the state-of-the-art practice regarding intermediate diaphragms of prestressed concrete bridges. Through a critical review, issues regarding the intermediate diaphragm effects on bridge performance are discussed. It is found that the ways to model the intermediate diaphragms make a significant difference on the results, and it is crucial to quantify the actual stiffness contribution of the intermediate diaphragms. Through field inspections, more specific information has been acquired for the current practice in Louisiana. This information is of invaluable help for developing finite element analysis and for the research team to make sound recommendations regarding the practice of intermediate diaphragms. The presented information will also help other states in examining the functions of intermediate diaphragms and in developing their policies of practice.
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Acknowledgments
The writers are thankful to the Louisiana Transportation Research Center for funding this project. The contents of this report reflect only the views of the writers/principal investigators who are responsible for the facts and the accuracy of the data presented herein. We would like to also express thankfulness to those who provided help during the development of these initial tasks of this research program.
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 12 • Issue 3 • August 2007
Pages: 161 - 167
Copyright
© 2007 ASCE.
History
Received: Oct 4, 2006
Accepted: Oct 30, 2006
Published online: Aug 1, 2007
Published in print: Aug 2007
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