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Structural Engineering and Mechanics
  Volume 10, Number 1, July 2000, pages 37-51
DOI: http://dx.doi.org/10.12989/sem.2000.10.1.037
 


Results and implications of the damage index method applied to a multi-span continuous segmental prestressed concrete bridge
Wang ML, Xu FL, Lloyd GM

 
Abstract
    Identification of damage location based on modal measurement is an important problem in structural health monitoring. The damage index method that attempts to evaluate the changes in modal strain energy distribution has been found to be effective under certain circumstances. Ln this paper two damage index methods using bending strain energy and shear strain energy have been evaluated for numerous cases at different locations and degrees of damage. The objective is to evaluate the feasibility of the damage index method to localize the damage on large span concrete bridge. Finite element models were used as the test structures. Finally this method was used to predict the damage location in an actual structure, using the results of a modal survey from a large concrete bridge.
 
Key Words
    strain energy, damage index method, concrete bridge
 
Address
Wang ML, Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St 2095 ERF, Chicago, IL 60607 USA
Univ Illinois, Dept Civil & Mat Engn, Chicago, IL 60607 USA
 

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