Structural Engineering and Mechanics

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Use of vibration characteristics to predict the axial deformation of columns

  • Moragaspitiya, H.N. Praveen (School of Civil Engineering & Built Environment, Queensland University of Technology) ;
  • Thambiratnam, David P. (School of Civil Engineering & Built Environment, Queensland University of Technology) ;
  • Perera, Nimal J. (School of Civil Engineering & Built Environment, Queensland University of Technology) ;
  • Chan, Tommy H.T. (School of Civil Engineering & Built Environment, Queensland University of Technology)
  • Received : 2013.06.19
  • Accepted : 2014.02.13
  • Published : 2014.04.10
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Abstract

Vibration characteristics of columns are influenced by their axial loads. Numerous methods have been developed to quantify axial load and deformation in individual columns based on their natural frequencies. However, these methods cannot be applied to columns in a structural framing system as the natural frequency is a global parameter of the entire framing system. This paper presents an innovative method to quantify axial deformations of columns in a structural framing system using its vibration characteristics, incorporating the influence of load tributary areas, boundary conditions and load migration among the columns.

Keywords

References

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