State-of-the-art in nonlinear finite element modeling of isolated planar reinforced concrete walls

Kolozvari, Kristijan; Biscombe, Lauren; Dashti, Farhad; Dhakal, Rajesh; Gogus, Aysegul; Gullu, M. Fethi; Henry, Richard; Massone, Leonardo M.; Orakçal, Kutay; Rojas, Fabián; SHEGAY, Alex; Wallace, John W.

doi:10.1016/j.engstruct.2019.04.097

Cited by 49 publications

(17 citation statements)

References 28 publications

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“…Table 1 provides properties of the test specimens used for validation of the model along with the other modeling approaches presented in Kolozvari et al (2019), where the numerical versus experimental comparisons are described in terms of load-displacement responses as well as the observed and predicted failure patterns. In this paper, a more comprehensive comparison of the numerical versus experimental behavior is provided using different features of the wall response.…”

Section: Experimental Verificationmentioning

confidence: 99%

“…One of the numerical (FEM) modeling techniques involved using curved shell elements available in DIANA commercial program. However, not all the features of wall response used for the verification practice could be included in Kolozvari et al (2019) and further details on strengths and limitations of this modeling approach are presented in this study.…”

Section: Introductionmentioning

confidence: 99%

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A parametric investigation on applicability of the curved shell finite element model to nonlinear response prediction of planar RC walls

Dashti

Dhakal

Pampanin

2019

Bull Earthquake Eng

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This study investigates the ability of a finite element model based on curved shell element formulation in predicting nonlinear behavior of planar RC structural walls, identifying the strengths and limitations of this modeling approach. For this purpose, a parametric validation is conducted in addition to verification of the model simulation against experimental results of several wall specimens tested in literature. The effects of variations in total length, thickness, shear-span ratio, axial load ratio, confinement, as well as the horizontal and vertical reinforcement ratios are investigated at both global and local levels. For scrutinizing the global response, lateral load versus total, flexural and shear deformation predictions are used. For local response, sensitivity of the stress and strain distributions throughout the length and height of the wall models to the parameters noted above is evaluated. The capabilities and deficiencies of the modelling approach are discussed in detail in light of the numerical versus experimental as well as parametric verifications. The model is found to be able to predict most of the experimentally observed failure mechanisms of rectangular walls including global out-of-plane instability under in-plane loading, concrete crushing at the base, diagonal tension and diagonal compression as well as sliding shear. The model is not able to represent bar buckling, bar fracture and the potential subsequent secondary failure modes such as instability of the compression boundary zone due to progressive asymmetric concrete crushing at the base. The parametric study indicated sensitivity of the model response to the variation of the parameters known to be influential on the nonlinear response of planar RC walls.

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Section: Experimental Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A parametric investigation on applicability of the curved shell finite element model to nonlinear response prediction of planar RC walls

Dashti

Dhakal

Pampanin

2019

Bull Earthquake Eng

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“…The Institute, which includes more than thirty leading researchers in the field from all over the world, has been active in various fields of research, where Modelling and Analysis working group members have been collaborating on addressing issues mentioned above. A comprehensive summary of the results obtained through this international effort are reported in overview papers by Kolozvari et al (2018Kolozvari et al ( , 2019a. However, given the large number of models and specimens considered in this study, some of the detailed responses, representative of each of the models considered, are not presented in these papers.…”

Section: Objectives and The Concept Of The Special Issuementioning

confidence: 99%

Guest editorial: Nonlinear modelling of reinforced concrete structural walls

Fischinger

Isaković

Kolozvari

et al. 2019

Bull Earthquake Eng

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“…Following the 2011 Christchurch earthquake, a large number of experimental 12,[28][29][30][31][32] and numerical studies [33][34][35][36][37][38] have been conducted in New Zealand to better understand the behavior of rectangular RC walls under seismic loading. The outcomes of these studies have led to a number of recommendations 39 to improve the design of rectangular RC walls.…”

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confidence: 99%

Experimental study on the effects of bi‐directional loading pattern on rectangular reinforced concrete walls

Niroomandi

Pampanin

Dhakal

et al. 2021

Earthq Engng Struct Dyn

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In this experimental study, three identical reinforced concrete (RC) walls were tested under three different lateral loading patterns. These loading patterns were cyclic in‐plane, skewed with 45° angle and clover leaf. The main objective was to investigate the effects of these bi‐directional loading patterns on the seismic behavior of slender rectangular RC walls. The results showed significant increase in tensile and compressive strains in concrete and longitudinal bars that led to earlier cover concrete spalling and bar buckling in the specimens subjected to bi‐directional loading. The neutral axis depth and compression zone were found to be substantially larger when subjected to bi‐directional loading and this led to the occurrence of concrete crushing and bar buckling in the web. Moreover, lateral instability failure triggered earlier in the specimens under bi‐directional loading, as a result of reduction of out‐of‐plane stiffness of the wall. However, bi‐directional loading did not significantly increase out‐of‐plane buckling of the wall in terms of out‐of‐plane displacement. In‐plane and out‐of‐plane shear cracks formed in one of the specimens subjected to bi‐directional loading, whereas the same wall under in‐plane loading developed only flexural cracks. It was also found that in‐plane shear deformation was larger when the wall was subjected to bi‐directional loading. The results of this experimental study emphasize the need for further investigation of the effects of bi‐directional loading on RC structural walls.

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State-of-the-art in nonlinear finite element modeling of isolated planar reinforced concrete walls

Cited by 49 publications

References 28 publications

A parametric investigation on applicability of the curved shell finite element model to nonlinear response prediction of planar RC walls

A parametric investigation on applicability of the curved shell finite element model to nonlinear response prediction of planar RC walls

Guest editorial: Nonlinear modelling of reinforced concrete structural walls

Experimental study on the effects of bi‐directional loading pattern on rectangular reinforced concrete walls

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