Implementation of smeared crack approach in rigid block and spring modeling of reinforced concrete

Moshirabadi, Saeed; Soltani, Mohammad Reza

doi:10.1016/j.engstruct.2019.109779

Cited by 9 publications

(3 citation statements)

References 20 publications

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“…1). The basic crack model is based on the nonorthogonal fixed crack method of the smeared crack approach (Moshirabadi & Soltani, 2019;Vecchio, 2000;Zhu et al, 2001).…”

Section: Nonlinear Finite Element Analysis Program Rcahestmentioning

confidence: 99%

Novel Plastic Hinge Element for Seismic Performance Assessment of RC Bridge Columns with Lap Splices

Kim

Eum

Shin

2023

Int J Concr Struct Mater

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This paper presents a nonlinear analysis procedure for evaluating the seismic performance of reinforced concrete (RC) bridge columns with lap splices using a novel plastic hinge element considering shear deformation. To accurately assess the inelastic behavior of RC bridge columns, reliable three-dimensional (3D) constitutive models are required. However, developing a 3D nonlinear material model is difficult and computationally intensive. In this study, to address these issues, a new plastic hinge element considering shear deformation for RC bridge columns is developed. The new plastic hinge element is based on the Timoshenko beam theory and utilizes two-noded zero length element with six degrees of freedom. The finite element model was implemented in a computer program named Reinforced Concrete Analysis in Higher Evaluation System Technology (RCAHEST) developed by the authors. The developed plastic hinge element for seismic performance assessment of RC bridge columns with lap splices was validated through comparison of the numerical and experimental results.

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“…1). The basic crack model is based on the nonorthogonal fixed crack method of the smeared crack approach (Moshirabadi & Soltani, 2019;Vecchio, 2000;Zhu et al, 2001).…”

Section: Nonlinear Finite Element Analysis Program Rcahestmentioning

confidence: 99%

Novel Plastic Hinge Element for Seismic Performance Assessment of RC Bridge Columns with Lap Splices

Kim

Eum

Shin

2023

Int J Concr Struct Mater

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“…Namely, Youssef and Rahman [21] discussed a macromodel to represent the nonlinear performance of reinforced concrete elements under bending. Additionally, many research studies developed finite element models by using springs instead of specific elements [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Simplified Numerical Model Development for Advanced Design of Lightweight‐Concrete Encased Cold‐Formed Steel Compressed Elements

Eid

Joó

2022

Advances in Civil Engineering

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The utilization of cold-formed steel (CFS) elements has become more popular recently, due to their cost efficiency and feasibility in construction work. Nevertheless, since such elements are subjected to a variety of complex stability issues, numerous approaches to strengthening have been examined. Namely, CFS members were braced by using lightweight concrete through a previous experimental program. A simplified finite element model was performed consistently with the previous experimental work, to estimate the ultimate load of encased CFS members subjected to compression. The main aim of this research was to overcome the difficulties of modeling the concrete block by substituting the volume element with springs. In addition, a practical equation was proposed to predict the stiffness of springs, and an imperfection amplitude was set to obtain the design capacity of braced CFS compressed elements.

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“…Namely, they determined how to calculate the springs properties to assess the inelastic performance of steel and concrete. Additionally, a lot of researchers proposed a method to model RC or the effect of sheathing by using springs, where the properties of these springs were determined [27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of ultra‐lightweight concrete encased cold‐formed steel structures

Eid¹,

Joó²

2021

ce papers

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The use of thin‐walled structures has been increasingly spread in the last few decades due to their big advantages in both structural design and construction methods. Therefore, the recent researches have discussed a wide range of thin‐walled structures applications. However, the resistance of such structures will be decreased by buckling effect; hence, different ways of strengthening methods have been investigated. One of this method is the use of lightweight concrete as a filling of thin‐walled members. Previous experimental research at the Department of Structural Engineering at Budapest University of Technology and Economics, was carried out to investigate the axial behavior of polystyrene aggregate concrete (PAC) braced CFS elements [1]. The effect of PAC has led to increase the load‐bearing capacity and to restrain the global and distortional buckling modes of steel elements. The results revealed that the ultimate load was increased by 37‐94%. A simplified nonlinear finite element model was developed in ANSYS software to be able to predict the peak resistance of PAC filled thin‐walled members. GMNI analyses were carried out to validate the numerical model by the experimental tests. The concrete was modelled by using springs with adequate stiffness, where a parametric study was conducted to determine the proper imperfection amplitudes of different element lengths. The numerical model showed good agreement with test results.

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Implementation of smeared crack approach in rigid block and spring modeling of reinforced concrete

Cited by 9 publications

References 20 publications

Novel Plastic Hinge Element for Seismic Performance Assessment of RC Bridge Columns with Lap Splices

Novel Plastic Hinge Element for Seismic Performance Assessment of RC Bridge Columns with Lap Splices

Simplified Numerical Model Development for Advanced Design of Lightweight‐Concrete Encased Cold‐Formed Steel Compressed Elements

Numerical simulation of ultra‐lightweight concrete encased cold‐formed steel structures

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