000013755 001__ 13755
000013755 005__ 20161114170254.0
000013755 04107 $$aeng
000013755 046__ $$k2011-05-25
000013755 100__ $$aPanagouli, O.
000013755 24500 $$aSeismic Strength Evaluation of  Reinforced Concrete Shear Walls with Cracks, Using the Notion of Fractal Geometry

000013755 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013755 260__ $$bNational Technical University of Athens, 2011
000013755 506__ $$arestricted
000013755 520__ $$2eng$$aShear walls play an important role to the seismic strength of modern seismic resistant structures. They are designed so that they have significant bending and shear strengths and ductility. However, existing structures have lightly reinforced shear walls. In most cases, especially under cycling loading, shear cracks appear reducing the shear capacity of the wall. Here, a typical shear wall of an existing structure is examined in which it is assumed that a crack has been formed. For the modeling of the geometry of the crack a new approach is applied, using the notion of fractal geometry. The aim of the paper is the estimation of the postcracking strength of the wall, taking into account the geometry of the cracks and the mixed friction-plastification mechanisms that develop in the vicinity of the crack. Due to the significance of the crack geometry a multi-resolution analysis is performed. The materials (steel and concrete) are assumed to have elastic-plastic behaviour. For concrete both cracking and crushing are taken into account in an accurate manner. On the interface unilateral contact and friction conditions are assumed to hold. For every structure resulting for each resolution of the interface, a classical Euclidean problem is solved. The obtained results lead to interesting conclusions concerning the post-cracking strength of lightly reinforced shear walls.

000013755 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013755 653__ $$aCracked shear walls, rough interfaces, fractal geometry, fractal resolution, unilateral contact, variational formulation

000013755 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013755 720__ $$aPanagouli, O.$$iMistakidis, E.$$iIordanidou, K.
000013755 8560_ $$ffischerc@itam.cas.cz
000013755 8564_ $$s1827885$$uhttps://invenio.itam.cas.cz/record/13755/files/628.pdf$$yOriginal version of the author's contribution as presented on CD, section: RS 02 RC Structures.
000013755 962__ $$r13401
000013755 980__ $$aPAPER