Nonlinear Characteristics of Damaged Concrete Structures under Vehicular Load

This paper investigates the possibility of using changes in the nonlinear characteristics of the reinforced concrete structures under vehicular loads to detect damage. An experimental study is carried out on a Tee-section reinforced concrete beam subject to the action of a moving model vehicle. Vertical accelerations and displacements are measured while the vehicle crosses the bridge. Nonlinearities are detected by examining the changes in the instantaneous frequency when the vehicular loads are at different locations along the beam. Results demonstrated that the large changes in the vibration behavior due to the damage could be amplified by the presence of vehicular load on top of the beam. A damage index, based on the flexural rigidity of the beam, is proposed which can be an indicator for the assessment of reinforced concrete bridge deck under vehicular load.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Authors:
  • Law, S S
  • Zhu, X Q
• Publication Date: 2005-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1277-1285
• Serial:
  • Journal of Structural Engineering
  • Volume: 131
  • Issue Number: 8
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Beams; Bearing capacity; Bridge decks; Frequency analyzers; Loss and damage; Reinforced concrete; Reinforced concrete bridges; Signal processing; Vehicles; Vibration
• Uncontrolled Terms: Continuous beams
• Subject Areas: Bridges and other structures; Design; Highways; Materials; Vehicles and Equipment; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01003433
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 29 2005 11:39AM