Model parameter identification of discharge structure based on HHT

Author

Huang, Jinlin ; Su, Yawen

Author_Institution

Sch. of Civil Eng., Tianjin Univ., Tianjin, China

fYear

2011

fDate

26-28 July 2011

Firstpage

4482

Lastpage

4485

Abstract

The application of Hilbert-Huang Transform method for modal parameters identification to hydraulic structure is investigated in this paper, according to measurement data of the response time histories under discharge excitation. To avoid mode mixing, the signal is band-pass filter firstly. Then the natural frequencies and modal damping ratios of the arch dam are identified using HHT method in combination with measurement. The results are demonstrated that HHT is effective to extract a more intensive two-order of the arch dam for hydraulic structures.

Keywords

Hilbert transforms; band-pass filters; damping; dams; hydraulic systems; structural engineering computing; HHT; Hilbert-Huang Transform; arch dam; band-pass filter; discharge structure; flood discharge excitation; hydraulic structure; measurement data; modal damping; model parameter identification; natural frequencies; Civil engineering; Floods; History; Hydroelectric power generation; Parameter estimation; System identification; Transforms; HHT; arch dam; flood discharge excitation; parameter identification;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6003291

Filename

6003291