Title: Impact and vibration method for measuring natural frequency of bridge lower structure
Application Number: 200510086605 Application Date: 2005.10.14
Publication Number: 1804563 Publication Date: 2006.07.19
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01H17/00,G01H1/00,G01M7/02
Applicant(s) Name: Beijing Jiaotong University Address: 100044
Inventor(s) Name: Xia He, 西村昭彦, Zhan Jiawang
Attorney & Agent:
Abstract:
     The invention relates to an impulse vibrating method for testing the bridge substructure natural frequency of vibration which uses avoirdupois weight to stroke the pier and tests the vibrating response of the pier to analyze and compute the natural frequency of vibration. It uses avoirdupois weight to stroke the pier top part and tests the speed and hastens response of the bridge. It usually dose multi-stroke and uses the recording wave mode superposition to dispel the noise to obtain the accurate response wave mode. It reads the response wave mode to do Fourier analysis to ascertain Fourier frequency spectrum and combines with the peak spectrum to ascertain the natural frequency of vibration of bridge.
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