000010642 001__ 10642
000010642 005__ 20141205155749.0
000010642 04107 $$aeng
000010642 046__ $$k2008-10-12
000010642 100__ $$aLei, Ying
000010642 24500 $$aDistributed Detection of Local Damage in Large-Size Structures under Earthquake Excitation

000010642 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010642 260__ $$b
000010642 506__ $$arestricted
000010642 520__ $$2eng$$aDetection of local damage in large-size structures under earthquakes is an important but challenging task. In this paper, based on substructural approach, a technique for distributed detection of local damage in large-size linear structures subject to earthquake excitation is proposed. Interaction effect between adjacent substructures is considered by the interaction forces at substructural interfaces. The ‘unknown external inputs’ to the substructures concerned are estimated by an algorithm of recursive least squares estimation. The proposed technique not only simplifies the difficulties in the identification of complex structures by decreasing the numbers of unknown parameters in the identification process but also allows for local structural damage detection at critical parts where damage may occur. Moreover, it provides an efficient distributed computing strategy for structural damage detection which can be implemented by wireless smart sensor network based on the distributed computing capacity of smart sensors. A numerical example of detecting structural damage at element level in multi-story building is used to illustrate the proposed technique. Simulation results demonstrate that the proposed technique is capable of detecting local damage with satisfactory accuracy and it is efficient for the detection of local damage in large-scale structures.

000010642 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010642 653__ $$aDamage detection, system identification, unknown inputs, recursive least-squares estimation, finite element model

000010642 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010642 720__ $$aLei, Ying$$iLiu, Lijun$$iNi, Pinhe
000010642 8560_ $$ffischerc@itam.cas.cz
000010642 8564_ $$s254787$$uhttps://invenio.itam.cas.cz/record/10642/files/14-0118.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0118.
000010642 962__ $$r9324
000010642 980__ $$aPAPER