000018932 001__ 18932
000018932 005__ 20170118182248.0
000018932 04107 $$aeng
000018932 046__ $$k2017-01-09
000018932 100__ $$aKolozvari, Kristijan
000018932 24500 $$aNew Opensees Models for Simulation of Nonlinear Flexural and Shear-Flexural Interaction Behavior of Reinforced Concrete Walls and Columns

000018932 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018932 260__ $$b
000018932 506__ $$arestricted
000018932 520__ $$2eng$$aExisting approaches used to model the lateral load versus deformation responses of reinforced concrete (RC) members typically assume uncoupled axial/flexural and shear responses. A novel analytical model that captures interaction between axial/flexural and shear behavior in RC walls and columns under reversed-cyclic loading conditions has been developed and implemented into the computational platform OpenSees. The proposed modeling approach incorporates RC panel behavior described with a constitutive fixed-strut-angle panel model into a two-dimensional Multiple-Vertical-Line-Element-Model (MVLEM) formulation. This paper describes new classes added to the existing OpenSees library including: 1) baseline MVLEM element with uncoupled axial/flexural and shear behavior, 2) Shear-Flexure-Interaction MVLEM (SFI-MVLEM) element, 3) 2-D RC panel model based on the fixed-strut-angle approach, 4) uniaxial material model for concrete, and 5) uniaxial material model for steel. In addition, validation of the analytical models for quasi-static analysis of: i) RC column specimen using the SFI-MVLEM, ii) a relatively slender RC wall specimen with flexure-dominated response using the MVLEM, and iii) a moderate-aspect-ratio RC wall specimen with flexure-shear dominated response using the SFIMVLEM, are presented. Response comparisons reveal that the implemented analytical models capture well the experimentally-measured behavior of RC structural walls and columns. Based on the comparisons presented, model capabilities are assessed and potential model improvements are identified.

000018932 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018932 653__ $$aReinforced concrete elements; Analytical modeling; Shear-flexure interaction; OpenSees; Earthquake eng.;

000018932 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018932 720__ $$aKolozvari, Kristijan$$iOrakcal, Kutay$$iWallace, John
000018932 8560_ $$ffischerc@itam.cas.cz
000018932 8564_ $$s1764307$$uhttps://invenio.itam.cas.cz/record/18932/files/2514.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2514.
000018932 962__ $$r16048
000018932 980__ $$aPAPER