000012863 001__ 12863
000012863 005__ 20160920162651.0
000012863 04107 $$aeng
000012863 046__ $$k2016-09-05
000012863 100__ $$aLe, N.T.
000012863 24500 $$aDamage assessment of concrete gravity dams using vibration characteristics

000012863 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012863 260__ $$bTaylor and Francis Group, London, UK
000012863 506__ $$arestricted
000012863 520__ $$2eng$$aVibration-based Structural Health Monitoring (VBSHM) has emerged as a feasible technique in long-term monitoring, structural performance evaluation and damage assessment of civil structures. As an important aspect of the complete VBSHM system, over the last three decades, many vibration-based damage detection methods have been developed for buildings and bridges. However, the application of these techniques to Concrete Gravity (CG) dams has been limited. In the present study, damage indices based on changes in modal flexibility and modal strain energy are suitably enhanced to be applicable for plane-strain structures. They are then used to investigate the feasibility of detecting and locating damage in a finite element model of a CG dam without noise effects. Results show that the enhanced damage indices can be promising in locating damage in the upstream part of CG dams by using only the first lateral mode of vibration. In addition, it is necessary to monitor both horizontal and vertical mode shape components and use these for structural damage diagnoses in CG dams.

000012863 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012863 653__ $$a

000012863 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012863 720__ $$aLe, N.T.$$iThambiratnam, D.P.$$iChan, T.H.T.$$iNguyen, A.$$iHuynh, B.K.T.
000012863 8560_ $$ffischerc@itam.cas.cz
000012863 8564_ $$s1549965$$uhttps://invenio.itam.cas.cz/record/12863/files/311.pdf$$yOriginal version of the author's contribution as presented on CD, 311.pdf.
000012863 962__ $$r12552
000012863 980__ $$aPAPER