000018947 001__ 18947
000018947 005__ 20170118182249.0
000018947 04107 $$aeng
000018947 046__ $$k2017-01-09
000018947 100__ $$aGiry, Cedric
000018947 24500 $$aA Discrete Simulation Tool for the Study of Old Masonry Nonlinear Behaviour

000018947 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018947 260__ $$b
000018947 506__ $$arestricted
000018947 520__ $$2eng$$aSeismic assessment of historical masonry structures is a crucial field of architectural heritage. However, for this kind of structures, it may be difficult to get information relative to the mechanical properties of the masonry itself. Indeed, as the structures may generally be protected as cultural heritage, no sample of the material can be extracted in order to characterize it. As a consequence, it may be difficult to assess the vulnerability of this type of structures face to seismic loadings. In this paper, a strategy is proposed in order to tackle this problem. In recent works, a discrete simulation tool has been developed to analyze and characterize the behavior of concrete. This tool, based on discrete elements method, allows investigating the response of quasi-brittle materials submitted to different loadings like uniaxial cyclic loading, shear loading, ... The media is described with rigid particles with beam elements between them reproducing the cohesion of the material. Contact laws are also introduced in the model in order to describe the behavior during crack closure. This work proposed an adaptation of this virtual testing tool for old masonry. Through a case study dealing with baroque religious heritage in French Savoy, a continuous damage model which parameters are identified from numerical experiments is used in order to analyze the response of a church under seismic loading. An analysis of the nonlinearities observed in the simulation is proposed with a comparison with "classical" failure mechanism of masonry churches under seismic loading.

000018947 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018947 653__ $$aold masonry; discrete element method; virtual testing; damage model.

000018947 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018947 720__ $$aGiry, Cedric$$iRagueneau, Frederic$$iLimoge, Claire$$iVassaux, Maxime
000018947 8560_ $$ffischerc@itam.cas.cz
000018947 8564_ $$s1459853$$uhttps://invenio.itam.cas.cz/record/18947/files/2543.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2543.
000018947 962__ $$r16048
000018947 980__ $$aPAPER