Load Carrying Capacity Assessment of Prestressed Concrete Beam Bridge from Structural Forced Vibration Response

The number of aging highway bridges presents the problem of how to assess their physical condition for bridge maintenance and management. Since prestressed concrete (PC) beam bridges are the most generally adopted bridge type for the construction of highway bridges, it is very important to develop a fast test method to evaluate structural condition and the load carrying capacity of these bridges in a non-destructive way. The prestress force is critical for crack resistant load carrying capacity of PC beam bridges. The problem is that commonly used non-destructive evaluation (NDE) techniques (e.g. visual inspection, acoustic emission technique, ultrasonic inspection technique) cannot be used for prestress force identification. To meet this challenge, this paper proposes structural vibration tests. Using structural vibration response measurements collected from a bridge excited by artificially generated forces or ambient excitations, prestress force can be identified using the sensitivity-based optimization method. The crack resistant load carrying capacity can be assessed according to the remaining prestress force in the beam.This paper proposes a procedure for the PC simply supported beam bridges eccentrically prestressed with straight tendons using structural forced vibration response.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9783857481185
• Corporate Authors:

  International Association for Bridge and Structural Engineering

  ETH-Honggerberg, Wolfgang-Pauli-Strasse 15
  Zurich 8093,   Switzerland  CH-8093
• Authors:
  • Sun, Zhie
  • Li, Zhen
• Conference:
  • 17th Congress of IABSE. Creating and Renewing Urban Structures
  • Location: Chicago IL, United States
  • Date: 2008-9-17 to 2008-9-19
• Publication Date: 2008

Language

• English

Media Info

• Media Type: Print
• Features: Figures;
• Pagination: pp 502-503
• Monograph Title: 17th Congress of IABSE. Creating and Renewing Urban Structures. Tall Buildings, Bridges and Infrastructure

Subject/Index Terms

• TRT Terms: Beams; Bearing capacity; Cracking; Inspection; Nondestructive tests; Prestressed concrete; Rehabilitation; Vibration
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01359528
• Record Type: Publication
• ISBN: 9783857481185
• Files: TRIS
• Created Date: Dec 22 2011 2:08PM