COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE

Gan Lin; Li Hailong

doi:10.13204/j.gyjz201308006

Volume 43 Issue 8

Dec. 2014

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Gan Lin, Li Hailong. COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 29-33,23. doi: 10.13204/j.gyjz201308006

Citation:

Gan Lin, Li Hailong. COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 29-33,23. doi: 10.13204/j.gyjz201308006

Gan Lin, Li Hailong. COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 29-33,23. doi: 10.13204/j.gyjz201308006

Citation:

Gan Lin, Li Hailong. COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 29-33,23. doi: 10.13204/j.gyjz201308006

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COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE

doi: 10.13204/j.gyjz201308006

Gan Lin¹,
Li Hailong²

1.
1. College of Construction Management and Real Estate,Chongqing University,Chongqing 400045,China;
2.
2. College of Civil Engineering,Chongqing University,Chongqing 400045,China

Received Date: 2012-11-23
Publish Date: 2013-08-20

Abstract

Abstract

Through a four-story steel frame model experiment under enviromental excitation, the displacement response of each measuring point was recorded, and five time domain methods(the ITD method, STD method, the complex index method, the ERA method and the stochastic subspace method) were used to identify the modal parameters.An acceptable and satisfying result shows that all the methods can be applied to the building structure.The 5 methods have higher precision for identifying frequency, and have relative lower precision for damping ratio.Compared with STD method and the complex index method, the Stochastic Subspace method and the ERA method have higher precision for identifying the model parameters, the ITD method has lower precision.
- ambient excitation,
- steel frame structure,
- modal parameters identification,
- model test

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References(9)

References

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