000018671 001__ 18671
000018671 005__ 20170118182236.0
000018671 04107 $$aeng
000018671 046__ $$k2017-01-09
000018671 100__ $$aHeitz, Thomas
000018671 24500 $$aDamping Identification and Quantification: Experimental Evidences and First Numerical Results

000018671 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018671 260__ $$b
000018671 506__ $$arestricted
000018671 520__ $$2eng$$aThe way of quantifying energy dissipations in reinforced concrete (RC) structures during seismic events is still a complex issue to solve out. However, the designer would rather use simplified modelling for both the geometrical representation of the structure and its mechanical behaviour. To this end, the Rayleigh-type viscous damping based models are commonly used even if several studies have emphasized the inherent issues of this approach. Alternative solutions exist, but the target values of the damping themselves are still questionable since the dynamic properties of the structure evolve throughout the nonlinear time history analysis. To bring answers to the aforementioned issues, a set of experiments including seismic tests on RC beams is carried out by means of the TAMARIS experimental facility operated by the French Alternative Energies and Atomic Energy Commission (CEA). The results will be used to propose a new damping modelling strategy able to reproduce damping evolution throughout time history analysis while avoiding the use of complex constitutive laws. In this paper, the lacks of Rayleigh damping models are briefly reminded and a review of the advantages and disadvantages of various damping measurement experimental procedures is made. Then, the IDEFIX experimental campaign (not executed yet) is presented in contrast with the aforementioned review. Eventually, numerically simulated results of the tests are exposed and discussed. Preliminary numerical results in connection with the proposed damping modelling strategy will be shown and compared with the ones coming from existing approaches in order to demonstrate not only its relevance but also its efficiency.

000018671 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018671 653__ $$adamping; RC structures; model identification; experimental campaign, Cast3M.

000018671 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018671 720__ $$aHeitz, Thomas$$iRichard, Benjamin$$iGiry, Cédric$$iRagueneau, Frédéric
000018671 8560_ $$ffischerc@itam.cas.cz
000018671 8564_ $$s1351086$$uhttps://invenio.itam.cas.cz/record/18671/files/1960.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1960.
000018671 962__ $$r16048
000018671 980__ $$aPAPER