Nonlinear Fea of Soil-Structure-Interaction Effects on Rc Shear Wall Structures

Saadi, Dina G

doi:10.7712/120117.5659.18218

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…Conclusively, the mesh size misconception is not valid in this case, thus the authors strongly believe that this research work is a proof that the under study material model performs numerically well when combined with the finite element method and in a similar manner with any other constitutive material model currently available in the international literature. With the only difference, that it outperforms them when used with coarser meshes (AlHamaydeh et al, 2017;Engen et al, 2017;Gravett et al, 2019;Markou, 2013Markou, , 2015Markou, , 2018Markou and AlHamaydeh, 2018;Markou and Genco, 2019;Papadrakakis, 2013, 2015;Markou et al, , 2017Markou et al, , 2018aMarkou et al, , 2018bMarkou et al, , 2019aMarkou et al, , 2019bMourlas et al, 2016Mourlas et al, , 2017aMourlas et al, , 2017bMourlas et al, , 2017cMourlas et al, , 2018Mourlas et al, , 2019aMourlas et al, , 2019bMourlas et al, , 2019cSaadi et al, 2018). laboratory technicians of the Civil Engineering Department of the University of Pretoria, during the experimental campaign that was performed during this research work.…”

Section: Discussionmentioning

confidence: 99%

“…Further development and use of the 3 D detailed modeling approach was presented in AlHamaydeh et al (2017); Gravett et al (2019); Markou (2015Markou ( , 2018; Markou and Genco (2019); Markou and Papadrakakis (2015); Markou et al ( , 2017Markou et al ( , 2018aMarkou et al ( , 2018bMarkou et al ( , 2019aMarkou et al ( , 2019b; Mourlas et al (2016Mourlas et al ( , 2017aMourlas et al ( , 2017bMourlas et al ( , 2017cMourlas et al ( , 2018Mourlas et al ( , 2019aMourlas et al ( , 2019bMourlas et al ( , 2019c; Saadi et al, (2018), where the adoption of relatively large hexahedral elements was assumed. This assumption was solely based on computational restrictions and was not related to the fact that the proposed method was not suitable when finer meshes were used.…”

Section: Introductionmentioning

confidence: 99%

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Finite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshes

Markou

Roeloffze

2021

International Journal of Damage Mechanics

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Modelling of concrete through 3 D constitutive material models is a challenging subject due to the numerous nonlinearities that occur during the monotonic and cyclic analysis of reinforced concrete structures. Additionally, the ultimate limit state modelling of plain concrete can lead to numerical instabilities given the lack of steel rebars that usually provide with the required tensile strength inducing numerical stability that is required during the nonlinear solution procedure. One of the commonly used 3 D concrete material models is that of the Kotsovos and Pavlovic, which until recently it was believed that when integrated with the smeared crack approach, it can only be used in combination with relatively larger in size finite elements. The objective of this study is to investigate into this misconception by developing different numerical models that foresee the use of fine meshes to simulate plain concrete and reinforced concrete specimens. For the needs of this research work, additional experiments were performed on cylindrical high strength concrete specimens that were used for additional validation purposes, whereas results on a reinforced concrete beam found in the international literature were used as well. A discussion on the numerical findings will be presented herein by comparing the different experimental data with the numerically predicted mechanical response of the under study concrete material model.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshes

Markou

Roeloffze

2021

International Journal of Damage Mechanics

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“…As it was presented in [50] and [60], Reconan FEA code [61] has the ability to predict the nonlinear dynamic behaviour of RC structures and capture the soil mechanical behaviour under different loading conditions. Furthermore, the software was successfully used to capture the mechanical behaviour of a RC 6-pile foundation system embedded in soil [62] that was tested under ultimate limit state conditions.…”

Section: Additional Validationmentioning

confidence: 99%

“…The RC frame that was tested at a seismic table [56] was one of the models used to validate the developed algorithm [50] in capturing the nonlinear dynamic response of RC structures. The developed simulation tool for the needs of this research work was integrated within the software code Reconan FEA [60]. In addition to the 2-storey RC test frame, a four-column 2storey RC building was analysed under dynamic loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil–Structure Interaction on Nonlinear Dynamic Response of Reinforced Concrete Structures

Mourlas

Khabele

Bark

et al. 2020

Int. J. Str. Stab. Dyn.

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Investigating the nonlinear dynamic response of reinforced concrete (RC) structures is of significant importance in understanding the expected behavior of these structures under dynamic loading. This becomes more crucial during the design of new or the assessment of the existing RC structures that are located in seismically active areas. The numerical simulation of this problem through the use of detailed 3D modeling is still a subject that has not been investigated thoroughly due to the significant challenges related to numerical instabilities and excessive computational demand, especially when the soil–structure interaction (SSI) phenomenon is accounted for. This study aims at presenting a nonlinear simulation tool to investigate this numerically cumbersome problem in order to provide further inside into the SSI effect on RC structures under nonlinear dynamic loading conditions. A detailed 3D numerical model of full-scale RC structures considering the SSI effect through modeling the nonlinear frame and soil domain is performed and discussed herein. The constructed models are subjected to dynamic loading conditions and an elaborate investigation is presented considering different type of structures, material properties of soil domains and depths. The RC structures and the soil domains are modeled through 8-noded hexahedral isoparametric elements, where the steel bar reinforcement of concrete is modeled as embedded beam and truss finite elements. The Ramberg–Osgood constitutive law was used for modeling the soil domain. It was shown that the SSI effect can significantly increase the flexibility of the system, altering the nonlinear dynamic response of the RC frames causing local damages that are not observed when the fixed-base model is analyzed. Furthermore, it was found that the structures founded on soft soil developed larger base-shear compared to the fixed-base model which is attributed to resonance phenomena connected to the SSI effect and the imposed accelerograms.

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Fuzzy Logic-Controlled Magnetorheological Dampers

Amin,

Asar,

Jaradat

et al. 2024

Lecture Notes in Mechanical Engineering

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Nonlinear Fea of Soil-Structure-Interaction Effects on Rc Shear Wall Structures

Abstract: Abstract. Considering Soil-Structure-Interaction (SSI) in Finite Element Analysis (FEA) is accounted for through explicit representation of the soil domain allowing for departures from

Cited by 10 publications

References 9 publications

Finite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshes

Finite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshes

Effect of Soil–Structure Interaction on Nonlinear Dynamic Response of Reinforced Concrete Structures

Fuzzy Logic-Controlled Magnetorheological Dampers

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