Hysteretic Model for Flexure-shear Critical Reinforced Concrete Columns

Yan-qing, Zhang; Han, Shuai

doi:10.1080/13632469.2017.1297267

Cited by 12 publications

(10 citation statements)

References 23 publications

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“…This makes lumped-plasticity models more attractive for conducting the series of nonlinear analyses required when assessing the seismic vulnerability of buildings, such as those required by ASCE/SEI 41-17 7 or ASCE/SEI 7-22. 8 The cyclic behavior in lumped plasticity elements has typically been implemented using a multi-linear load-deformation envelope, or backbone response, and a cyclic response consisting of polygonal hysteretic (PH) shapes having distinct points at which the effective stiffness shifts abruptly (e.g., [9][10][11][12][13][14][15][16][17] ), or smooth hysteretic (SH) shapes having continuously varying stiffnesses (e.g., [18][19][20][21][22][23][24][25] ). However, while some existing models are able to represent the general characteristics of cyclic responses of concrete members under seismic excitation, none were developed specifically to capture all the cyclic behaviors of concrete members.…”

Section: Highlights Of Proposed Model Capabilitiesmentioning

confidence: 99%

Uniaxial model for simulating the cyclic behavior of reinforced concrete members

Ghorbani

Suselo

Gendy

et al. 2022

Earthq Engng Struct Dyn

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A new computational model is proposed within the lumped-plasticity framework to simulate the lateral load-deformation response of reinforced concrete members up to complete loss of lateral strength. The proposed model implements new features that enhance simulation fidelity of reinforced concrete members.It employs a cubic spline function to simulate the gradual changes of stiffness observed in the unloading-reloading behavior of concrete members under seismic loading. The proposed model takes a different approach to simulating cyclic behavior from existing models, by utilizing an energy dissipation term as the central parameter to adjust the level of pinching in a response. The model replicates the amount of cyclic energy dissipation specified by the user, regardless of other parameters. It also automatically adjusts cyclic energy dissipation with increasing lateral deformations, to match experimental observations from concrete members. The model is equipped with deformation and energy-based damage functions that can realistically capture stiffness and strength damage in concrete members, even under non-symmetric cyclic loading. Using these functionalities, the model can adjust the lateral load-deformation backbone response based on load-history to account for short-or long-duration non-symmetric ground motion inputs. The proposed model is applicable for simulating the lateral shear or moment behaviors of reinforced concrete members, such as columns, beams, walls, and joints. The model is implemented in the open-source simulation platform OpenSees as the CyclicReinforcedConcrete model.

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Section: Highlights Of Proposed Model Capabilitiesmentioning

confidence: 99%

Uniaxial model for simulating the cyclic behavior of reinforced concrete members

Ghorbani

Suselo

Gendy

et al. 2022

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

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“…Researchers have used different macro modeling approaches with varying complexities to accurately capture the behavior of shear-critical RC columns and structures (Mergos and Kappos, 2008). [4][5][6] Detailed models can be used to calculate the lateral load-displacement relationship of a column; however, these models become computationally expensive when the entire structure is modeled and analyzed. Thus, in this paper, an easy-toapply model is proposed to calculate the cyclic lateral displacement of RC columns with a reasonable or acceptable level of accuracy.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Displacement Model for Reinforced Concrete Columns

Bicici

Sezen

2022

Earthq Engng Struct Dyn

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Reinforced concrete (RC) structures in low to moderate seismic regions and many older RC structures in high seismic regions include columns with steel reinforcement details not meeting the requirements of modern seismic design codes. These columns typically fail in shear or in a brittle manner and their behavior must be accurately captured when RC structures are modeled and analyzed. The total lateral displacement of a low ductility or shear critical RC column can be represented as the sum of three displacement components: (1) flexural displacement, (2) displacement due to slippage of the reinforcing bars at column ends, and (3) shear displacement. In this study, these three displacement components are separately modeled and then combined together following a proposed procedure based on the expected overall behavior of the column and its failure mechanism. A simplified slip model is proposed. The main objective of this research is to develop an easy‐to‐apply method to model and capture the cyclic behavior of RC columns considering the shear failure mechanism. The proposed model is validated using the available data from RC column and frame experiments.

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“…Yan et al established the hysteretic model of the joints between steel reinforced ultrahigh strength concrete columns and steel reinforced concrete beams and put forward the quantitative method of seismic damage and attenuation coefficient [5]. Zhang and Han proposed a prediction model for cyclic lateral load deformation response of RC columns subjected to axial compression and cyclic shear; comparison between the predicted cyclic response and experimental results indicates that the proposed model can predict the observed hysteretic response of flexureshear critical RC columns well [6]. Yuka and Hideki proposed a hysteretic model of H-beam considering slenderness ratio and also proposed a hysteretic model suitable for uniform moment and antisymmetric moment [7].…”

Section: Introductionmentioning

confidence: 99%

Restoring Force Model Research on Joint of Circular Tubed Steel‐Reinforced Concrete Column

Dai

Nie

Zhou

et al. 2021

Shock and Vibration

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In this paper, two joints of circular tubed steel-reinforced concrete (CTSRC) column were designed. The load-displacement hysteretic curve and skeleton curve of this new type of joint are obtained by the pseudostatic test under low cycle cyclic load on the top of the column. The results show that this new type of joint has good seismic energy dissipation performance. On the basis of the test, a three-fold skeleton curve model considering three characteristic points of yield, limit, and failure is proposed, and the expression of skeleton curve model is given. The load and unload stiffness degradation law of specimens under reciprocating load is studied, and the expression of stiffness degradation law is given. The hysteresis law of the new type joint specimens is described in detail. The validity of the model is verified by comparing the experimental curve with the model curve. The model can be used in the elastic-plastic seismic time-history analysis on the joint of circular tubed steel-reinforced concrete (CTSRC) column.

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Hysteretic Model for Flexure-shear Critical Reinforced Concrete Columns

Cited by 12 publications

References 23 publications

Uniaxial model for simulating the cyclic behavior of reinforced concrete members

Uniaxial model for simulating the cyclic behavior of reinforced concrete members

Cyclic Displacement Model for Reinforced Concrete Columns

Restoring Force Model Research on Joint of Circular Tubed Steel‐Reinforced Concrete Column

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