Diaphragm Effects of Prestressed Concrete Girder Bridges: Review and Discussion

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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10840680
• Authors:
  • Cai, C S
  • Araujo, M S
  • Chandolu, Anand
  • Avent, R Richard
  • Alaywan, Walid R
• Publication Date: 2007-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Illustrations; References; Tables;
• Pagination: pp 161-167
• Serial:
  • Practice Periodical on Structural Design and Construction
  • Volume: 12
  • Issue Number: 3
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0680
  • Serial URL: http://ascelibrary.org/loi/ppscfx

Subject/Index Terms

• TRT Terms: Concrete; Concrete bridges; Design practices; Diaphragms (Engineering); Field tests; Finite element method; Girder bridges; Prestressed concrete bridges; State of the art; Stiffness
• Geographic Terms: Louisiana
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01054666
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 30 2007 9:48PM