000019477 001__ 19477
000019477 005__ 20170118182320.0
000019477 04107 $$aeng
000019477 046__ $$k2017-01-09
000019477 100__ $$aHube, Matías
000019477 24500 $$aFiber Element Model for Reinforced Concrete Walls

000019477 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019477 260__ $$b
000019477 506__ $$arestricted
000019477 520__ $$2eng$$aDue to the taller reinforced concrete (RC) buildings that have been constructed in recent years, shear walls at lower levels are subjected to higher axial loads and bending moments. Although complex finite element inelastic models for shear walls can effectively couple several effects at the stress-strain level, they are computationally demanding, and hence robust and computationally efficient models are necessary to quickly assess the earthquake performance of these buildings. Herein, a pure two-node fiber element model that takes into account axial and bending components only, was modified to produce objective results under common loading conditions of the walls identified in Chilean buildings, i.e., high axial loads with linear bending moment variation between floors. A regularization is required to predict results independent of the element size and a shear model based on the modified compression field theory was added into this element to simulate the behavior of shear walls adequately. This investigation focuses in the formulation of the proposed model, its validation with experimental tests reported in the literature, and its application to actual RC walls of buildings. It was found that the steel stress-strain constitutive behavior, the inclusion of shear deformation, and the strain penetration effects played an important role in reproducing the experimental behavior of walls. Additionally, the proposed model is able to predict the observed collapse mechanisms of walls in buildings damaged during the 2010 earthquake. Since the element is capable of reproducing experimental tests and earthquake response, and since it is numerically more efficient than other approaches, its use for complete 3D inelastic dynamic analysis of buildings is promising.

000019477 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019477 653__ $$areinforced concrete, fiber model, wall, regularization

000019477 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019477 720__ $$aHube, Matías$$iVasquez, Jorge$$iLlera, Juan Carlos De La
000019477 8560_ $$ffischerc@itam.cas.cz
000019477 8564_ $$s1213493$$uhttps://invenio.itam.cas.cz/record/19477/files/3720.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3720.
000019477 962__ $$r16048
000019477 980__ $$aPAPER