What it is

Objectives:

1. •Assessing the dynamic behaviour of civil engineering structures (buildings, bridges, dams...) including soil-structure interaction
   

2. •Detecting and quantifying damage of a structure following an event (earthquake...)
   

Experimental means:

Vibration sensors (accelerometers, velocimeters) and digitizer for permanent monitoring or short-time vibration test

PROCESSING techniques:

1. •Input-Output or Output Only Modal analysis techniques from simple Fourier spectrum to system identification
   

2. •Time-frequency analysis
   

3. •Seismic Interferometry
   

Main Research Axes:

1. •Uncertainties and variations of resonance frequencies of structures (non-linearities, soil-structure interaction)
   

2. •New recording techniques for structures
   

PUBLICATIONS related to Building assessment

Summary publication: “Experimental method: input of the recordings of ambient vibrations for the study of seismic vulnerability of the existing buildings” in the book Seismic Vulnerability of Structures

Application to geological structures: “Modal analysis of 2-D sedimentary basin from frequency domain decomposition of ambient vibration array recordings“

“Data-driven post-earthquake rapid structural safety assessment”

“Contribution of ambient vibration recordings  (free-field and buildings) for post-seismic analysis: the case of the Mw 7.3 Martinique (French Lesser Antilles) earthquake, November 29, 2007“

“Observed non-linear soil-structure interaction from low amplitude earthquakes and forced-vibration recordings”

“Comparison between seismic vulnerability models and experimental dynamic  properties of existing buildings in France”

“Full Scale Dynamic Response of a RC Building under Weak Seismic Motions Using Earthquake Recordings, Ambient Vibrations and Modelling”

“Time–Frequency Analysis of Small Frequency Variations in Civil Engineering Structures Under Weak and Strong Motions Using a Reassignment Method”.

“Comparison of velocimeter and coherent LIDAR measurements for building frequency assessment”

“Dynamic parameters of structures extracted from ambient vibration: an aid for the seismic vulnerability assessment of existing buildings”

PUBLICATIONS related to Bridge identification

Goulet J.-A., Texier M., Michel C., Smith I.F.C., Chouinard L. “Quantifying the effects of modeling simplifications for structural identification of bridges“

Goulet J.-A., Michel C., Smith I.F.C., “Hybrid probabilities and error-domain structural identification using ambient vibration monitoring“ → Post-print pdf file (from website of J.A. Goulet)