000010722 001__ 10722
000010722 005__ 20141205155757.0
000010722 04107 $$aeng
000010722 046__ $$k2008-10-12
000010722 100__ $$aLimongelli, Maria Pina
000010722 24500 $$aTime-Response-Based Damage Detection Approach

000010722 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010722 260__ $$b
000010722 506__ $$arestricted
000010722 520__ $$2eng$$aDamage detection is usually carried out through analysis of recorded responses searching for changes in the structure’s modal parameters. This paper presents a new approach to damage detection based on the comparison between the accuracy of a spline function in interpolating the response of a structure, in the damaged and the undamaged (reference) states. The comparison is carried out in terms of an error function defined as the difference between responses recorded on the structure and responses calculated via the spline interpolation. The variations of the error with respect to a reference value reports the existence of damage in the region of the structure close to the locations where the higher changes occur. The method has been tested on the numerical model of a multistorey frame where damage has been simulated as a storey stiffness reduction. Results relevant to several damage scenarios show that the method allows both the detection and the localization of damage with a level of accuracy that increases with the intensity of damage. The application of the method requires a densely instrumented structure and the availability of responses recorded before and after a damaging event. The main advantages of the proposed method are that it does not require a numerical model of the structure nor heavy post-processing of recorded data. Hence, after a damaging earthquake, it can provide, nearly in real time, reliable information about the location of damage. These characteristics make the method a potentially useful tool for automated post-earthquake damage assessment.

000010722 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010722 653__ $$adamage detection, spline interpolation, post earthquake damage assessment.

000010722 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010722 720__ $$aLimongelli, Maria Pina
000010722 8560_ $$ffischerc@itam.cas.cz
000010722 8564_ $$s370136$$uhttps://invenio.itam.cas.cz/record/10722/files/05-01-0534.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0534.
000010722 962__ $$r9324
000010722 980__ $$aPAPER