FE modeling of Partially Steel-Jacketed (PSJ) RC columns using CDP model

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Abstract

This paper deepens the finite element modeling (FEM) method to reproduce the compressive behavior of partially steel-jacketed (PSJ) RC columns by means of the Concrete Damaged Plasticity (CDP) Model available in ABAQUS software. Although the efficiency of the CDP model is widely proven for reinforced concrete columns at low confining pressure, when the confinement level becomes high the standard plasticity parameters may not be suitable to obtain reliable results. This paper deals with these limitations and presents an analytically based strategy to fix the parameters of the Concrete Damaged Plasticity (CDP) model. Focusing on a realistic prediction of load-bearing capacity of PSJ RC columns subjected to monotonic compressive loads, a new strain hardening/softening function is developed for confined concrete coupled with the evaluation of the dilation angle including effects of confinement. Moreover, a simplified efficient modeling approach is proposed to take into account also the response of the steel angle in compression. The prediction accuracy from the current model is compared with that of existing experimental data obtained from a wide range of mechanical confinement ratio
Lingua originaleEnglish
pagine (da-a)143-152
Numero di pagine10
RivistaComputers and Concrete
Volume22
Stato di pubblicazionePublished - 2018

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Plasticity
Steel
Concretes
ABAQUS
Bearing capacity
Strain hardening
Reinforced concrete
Loads (forces)

All Science Journal Classification (ASJC) codes

  • Computational Mechanics

Cita questo

@article{672d69a77769451499f4a073f97de940,
title = "FE modeling of Partially Steel-Jacketed (PSJ) RC columns using CDP model",
abstract = "This paper deepens the finite element modeling (FEM) method to reproduce the compressive behavior of partially steel-jacketed (PSJ) RC columns by means of the Concrete Damaged Plasticity (CDP) Model available in ABAQUS software. Although the efficiency of the CDP model is widely proven for reinforced concrete columns at low confining pressure, when the confinement level becomes high the standard plasticity parameters may not be suitable to obtain reliable results. This paper deals with these limitations and presents an analytically based strategy to fix the parameters of the Concrete Damaged Plasticity (CDP) model. Focusing on a realistic prediction of load-bearing capacity of PSJ RC columns subjected to monotonic compressive loads, a new strain hardening/softening function is developed for confined concrete coupled with the evaluation of the dilation angle including effects of confinement. Moreover, a simplified efficient modeling approach is proposed to take into account also the response of the steel angle in compression. The prediction accuracy from the current model is compared with that of existing experimental data obtained from a wide range of mechanical confinement ratio",
author = "{Di Trapani}, Fabio and Ferrotto, {Marco Filippo} and Liborio Cavaleri and {Di Trapani}, Fabio",
year = "2018",
language = "English",
volume = "22",
pages = "143--152",
journal = "Computers and Concrete",
issn = "1598-8198",
publisher = "Techno Press",

}

TY - JOUR

T1 - FE modeling of Partially Steel-Jacketed (PSJ) RC columns using CDP model

AU - Di Trapani, Fabio

AU - Ferrotto, Marco Filippo

AU - Cavaleri, Liborio

AU - Di Trapani, Fabio

PY - 2018

Y1 - 2018

N2 - This paper deepens the finite element modeling (FEM) method to reproduce the compressive behavior of partially steel-jacketed (PSJ) RC columns by means of the Concrete Damaged Plasticity (CDP) Model available in ABAQUS software. Although the efficiency of the CDP model is widely proven for reinforced concrete columns at low confining pressure, when the confinement level becomes high the standard plasticity parameters may not be suitable to obtain reliable results. This paper deals with these limitations and presents an analytically based strategy to fix the parameters of the Concrete Damaged Plasticity (CDP) model. Focusing on a realistic prediction of load-bearing capacity of PSJ RC columns subjected to monotonic compressive loads, a new strain hardening/softening function is developed for confined concrete coupled with the evaluation of the dilation angle including effects of confinement. Moreover, a simplified efficient modeling approach is proposed to take into account also the response of the steel angle in compression. The prediction accuracy from the current model is compared with that of existing experimental data obtained from a wide range of mechanical confinement ratio

AB - This paper deepens the finite element modeling (FEM) method to reproduce the compressive behavior of partially steel-jacketed (PSJ) RC columns by means of the Concrete Damaged Plasticity (CDP) Model available in ABAQUS software. Although the efficiency of the CDP model is widely proven for reinforced concrete columns at low confining pressure, when the confinement level becomes high the standard plasticity parameters may not be suitable to obtain reliable results. This paper deals with these limitations and presents an analytically based strategy to fix the parameters of the Concrete Damaged Plasticity (CDP) model. Focusing on a realistic prediction of load-bearing capacity of PSJ RC columns subjected to monotonic compressive loads, a new strain hardening/softening function is developed for confined concrete coupled with the evaluation of the dilation angle including effects of confinement. Moreover, a simplified efficient modeling approach is proposed to take into account also the response of the steel angle in compression. The prediction accuracy from the current model is compared with that of existing experimental data obtained from a wide range of mechanical confinement ratio

UR - http://hdl.handle.net/10447/338175

UR - http://www.techno-press.org/download.php?journal=cac&volume=22&num=2&ordernum=2

M3 - Article

VL - 22

SP - 143

EP - 152

JO - Computers and Concrete

JF - Computers and Concrete

SN - 1598-8198

ER -