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Earthquake Engineering and Engineering Vibration

, Volume 8, Issue 3, pp 399–407 | Cite as

Dynamic finite element model updating of prestressed concrete continuous box-girder bridge

  • Xiankun LinEmail author
  • Lingmi Zhang
  • Qintao Guo
  • Yufeng Zhang
Technical Papers

Abstract

The dynamic finite element model (FEM) of a prestressed concrete continuous box-girder bridge, called the Tongyang Canal Bridge, is built and updated based on the results of ambient vibration testing (AVT) using a real-coded accelerating genetic algorithm (RAGA). The objective functions are defined based on natural frequency and modal assurance criterion (MAC) metrics to evaluate the updated FEM. Two objective functions are defined to fully account for the relative errors and standard deviations of the natural frequencies and MAC between the AVT results and the updated FEM predictions. The dynamically updated FEM of the bridge can better represent its structural dynamics and serve as a baseline in long-term health monitoring, condition assessment and damage identification over the service life of the bridge.

Keywords

prestressed concrete continuous box-girder bridge field ambient vibration testing dynamic characteristics model updating accelerating genetic algorithm objective function 

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer Berlin Heidelberg 2009

Authors and Affiliations

  • Xiankun Lin
    • 1
    Email author
  • Lingmi Zhang
    • 1
  • Qintao Guo
    • 2
  • Yufeng Zhang
    • 3
  1. 1.Institute of Vibration EngineeringNanjing University of Aeronautics and AstronauticsNanjingChina
  2. 2.College of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjingChina
  3. 3.Jiangsu Transportation Research InstituteNanjingChina

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