000019149 001__ 19149
000019149 005__ 20170118182301.0
000019149 04107 $$aeng
000019149 046__ $$k2017-01-09
000019149 100__ $$aLowes, Laura
000019149 24500 $$aInvestigation of RC Wall Failure Mechanisms Using Nonlinear Continuum Analysis

000019149 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019149 260__ $$b
000019149 506__ $$arestricted
000019149 520__ $$2eng$$aThe research presented here employed nonlinear continuum analysis to investigate the design parameters that determine the failure mechanism and deformation capacity of planar and nonplanar reinforced concrete walls. Several commonly used finite element software packages were investigated for use in nonlinear analysis of concrete walls; the ATENA software package (www.cervenka.cz) was found to best meet the requirements of accuracy, numerical efficiency and robustness, as well as ease of use. One of the most important properties was the automated regularization of concrete material response in compression. Regularization of concrete compression response is required to achieve accurate and mesh-objective simulation of wall failure, which often results from concrete crushing. In ATENA, regularization is a function of a user-defined deformation at compression failure, which is approximately linearly related to the energy dissipated during concrete crushing. The modeling approach was validated through comparison of simulated and observed response for a suite of planar and nonplanar concrete walls subjected to lateral and axial loading in the laboratory. Results show that strength and drift capacity can be predicted with a high level of accuracy. Using the validated numerical model, the impact of various design parameters on failure mechanism and drift capacity were investigated. Results show that walls subjected to high shear demands and/or with large length-to-thickness ratios exhibit a more brittle compression-shear failure, while walls with lower shear demands and smaller length-to-thickness ratios exhibit more ductile compression- or tension-controlled flexural failures.

000019149 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019149 653__ $$areinforced concrete; wall; flexural wall; nonlinear analysis; finite element analysis

000019149 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019149 720__ $$aLowes, Laura$$iLehman, Dawn$$iWhitman, Zach$$iAhmed, Kamal
000019149 8560_ $$ffischerc@itam.cas.cz
000019149 8564_ $$s1231083$$uhttps://invenio.itam.cas.cz/record/19149/files/2954.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2954.
000019149 962__ $$r16048
000019149 980__ $$aPAPER