STIFFNESS REDUCTION IDENTIFICATION OF STEEL TRUSS BRIDGE USING MICRO SHAKING DEVICE
This paper describes a damage identification technique for structures using a micro shaking device, and experimental verification of the technique using a steel truss bridge. First, a technique for identifying damage to structures is proposed which uses harmonic excitation force generated by a micro shaking device. Fourier response functions (FRFs) obtained by dividing the Fourier amplitudes of acceleration responses by the amplitude of the harmonic excitation are used to identify damage. Secondly, vibration testing on a steel truss bridge was conducted to investigate the effectiveness of the proposed technique as well as the use of a micro shaking device. Damage models of the steel truss bridge were created by cutting sections of bracing members. Finally, identification of damage using the proposed damage identification technique was conducted and its validity was examined.
damage identification micro shaking device vibration testing stiffness reduction
A.Furukawa H.Otsuka
Dept. of Civil Engineering , Kyushu University, Fukuoka. Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）