Structural System Identification of Bridge Superstructures using Dynamic Testing

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Structural System Identification of Bridge
Superstructures using Dynamic Testing
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Nicholas Haritos (PhD Student, 2nd
year) Supervisors Prof. L. K. Stevens A/Prof
Pythagoras
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Outline of Presentation

• Introduction (Motivation)
• Key Objectives
• Methodology
• Preliminary Results
• Concluding Remarks

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Motivation Why Dynamic Testing ?

• Aging Bridge Infrastructure ? need condition
  assesst. ? prioritise expenditure
• Post Extreme Load Event ? damage detection
• Visual Inspection Inadequate

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Key Objectives of Research

• Develop an efficient field testing strategy
• Optimise as best as possible on the elements
  involved
• Apply the technique to representative bridges on
  the asset register

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Methodology
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Application in Field
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Preliminary Results
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Concluding Remarks
Recap briefly ! on key features of the
presentation

• Dynamic testing technique for Structural System
  Identification presented
• Capacity for Damage Detection demonstrated
• FEA Model can be used with confidence since
  calibrated to Field test results
• Future Work Extension of Technique for Output
  Only Measurements (ie no shaker), currently
  underway