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An eccentric mass vibrator used at Chicago’s Soldier Field football stadium to evaluate requirements for tuned mass dampers.

Field Vibration Testing

Contact ANCO to test civil structures in the field. Since 1965 at University of California, Los Angeles (UCLA) and since 1971 at ANCO we performed over 300 field vibration tests world wide to determine the in-situ dynamic properties of structures including:

• Concrete gravity and arch dams
• Nuclear power plant containments and internal equipment
• Historical buildings being seismically strengthened
• Off shore oil platforms
• Bridges
• Flexible floors in convention centers and stadiums
• Machine foundations
• Piping and cable trays systems
• Gaseous effluent stacks
• Conventional plant boiler structures

Such testing clarifies many issues:

• Modal property measurement
• Verification/validation/modification of finite element models
• Vibration source identification/mitigation
• Machinery health monitoring
• Vibration isolation system evaluation/design
• Seismic margin analysis/qualification
• Vibration/stress/drift long term monitoring
• Soil/geological wave propagation studies in the near (meters) and far (km) field 

Testing is performed with eccentric mass vibrators, impulsive exciters, and ambient vibration testing listed in ANCO products menu.  Data acquisition is provided by the ANCO FOVDAR, GENDAR, and ME’scope software.