Modeling of Cyclic Shear-Flexure Interaction in Reinforced Concrete Structural Walls. I: Theory

Kolozvari, Kristijan; Orakçal, Kutay; Wallace, John W.

doi:10.1061/(asce)st.1943-541x.0001059

Cited by 110 publications

(73 citation statements)

References 10 publications

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“…et al[20] proposed a model to accurately capture the nonlinear flexural/shear interaction of the cyclic ratio of steel reinforcement in the vertical direction response of reinforced concrete structural walls. The model successfully captures the hysteretic loops of the overall load-displacement relationship.…”

mentioning

confidence: 99%

Experimental evaluation of the seismic performance of reinforced concrete structural walls with different end configurations

El-Azizy

Shedid

El‐Dakhakhni

et al. 2015

Engineering Structures

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mentioning

confidence: 99%

Experimental evaluation of the seismic performance of reinforced concrete structural walls with different end configurations

El-Azizy

Shedid

El‐Dakhakhni

et al. 2015

Engineering Structures

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“…In the late 1900s, practical analysis models for RC members were developed to account for the axial-flexure interactions in numerical simulations [10,11]. Such models considering the multi-interactions were also presented by other researchers [e.g., [13,14]. Chin and Kabeyasawa proposed a shear wall model (hereafter, the isoparametric element (IPE) model) on the basis of the use of an IPE to replace a single-story wall panel in typical RC shear walls with boundary columns and beams commonly used in Japan [12].…”

Section: Introductionmentioning

confidence: 99%

Softening effects of RC nonstructural flat walls on ductile concrete buildings

Sanada

Yoon

Akahori

et al. 2017

Earthq Engng Struct Dyn

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Summary Nonstructural reinforced concrete flat walls architecturally designed as exterior/partition walls in concrete buildings were severely damaged by the 2011 earthquake off the Pacific coast of Tohoku. This damage was observed in the monolithic nonstructural flat walls of relatively old ductile concrete buildings. Although these flat walls might affect the overall seismic performance and behavior of a building, the nonstructural wall effects have not been clarified because of the complex interactions among the structural components. To understand these effects, this paper conducts an experimental and numerical investigation of the nonstructural wall effects, focusing on a typical residential building damaged by the 2011 earthquake. A single‐story, one‐bay moment‐resisting frame model of the building with a nonstructural flat wall was tested to clarify the fundamental behavior. The results reveal that the wall significantly contributed to the seismic performance of the overall frame until it failed in shear, subsequently losing structural effectiveness. Such experimental wall behavior could be simulated by the isoparametric element model. Moreover, the structural effects of the nonstructural flat walls on the global seismic performance and behavior of the investigated building were discussed through earthquake response analyses using ground motions recorded near the building site and pushover analyses. Consequently, the building damage could be simulated in an analytical case considering the nonstructural flat walls, showing larger inter‐story drifts in the lower stories due to softening of the walls. The analytical results also indicated that the softening of the nonstructural flat walls decreased the building ductility, as defined by ultimate inter‐story drifts. Copyright © 2017 John Wiley & Sons, Ltd.

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“…This model is equivalent to the widely used multiple-vertical-line-element model, [39][40][41][42] which is a kind of macroscopic shear wall models, consisting of different vertical and horizontal plastic springs. Steel fibers with trilinear stress-strain relationship (without strength loss) were used to model the longitudinal reinforcement in the web and boundary zones.…”

Section: Analytical Model Of Concrete Shear Wallmentioning

confidence: 99%

Seismic behavior of coupled shear wall structures with various concrete and steel coupling beams

Pang

Sun

et al. 2017

Structural Design Tall Build

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A novel 2-level yielding steel coupling beam (TYSCB) has been developed to enhance the seismic performance of coupled shear wall systems. The TYSCB consists of a shear-yielding beam designed to yield first under minor earthquakes and a bend-yielding beam designed to yield under severe earthquakes. A comparison of seismic behavior of 4 20-storey coupled shear wall structures with reinforced concrete coupling beams, complete steel coupling beams, fuse steel coupling beams, and TYSCB is presented. The dimensions and force-displacement curves of these coupling beams are first designed. Nonlinear dynamic analyses on these structures are carried out under minor and severe earthquakes. The seismic behavior of these models is studied by comparing their storey shear forces, storey drift ratios and ductility demands. The results show that the base shear and storey drift of the structure with TYSCB under both minor and severe earthquakes are less than those of structures with concrete coupling beams and complete steel coupling beams. Furthermore, the ductility demand of coupled shear walls with TYSCB subjected to severe earthquakes can be greatly released compared with those using fuse steel coupling beams. This indicates that the proposed TYSCB has a better balance between ductility demand and energy dissipation, compared to traditional steel coupling beams. KEYWORDSconcrete coupling beam, coupled shear wall, energy dissipation capacity, seismic behavior, steel coupling beam, two-level yielding steel coupling beam

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Modeling of Cyclic Shear-Flexure Interaction in Reinforced Concrete Structural Walls. I: Theory

Cited by 110 publications

References 10 publications

Experimental evaluation of the seismic performance of reinforced concrete structural walls with different end configurations

Experimental evaluation of the seismic performance of reinforced concrete structural walls with different end configurations

Softening effects of RC nonstructural flat walls on ductile concrete buildings

Seismic behavior of coupled shear wall structures with various concrete and steel coupling beams

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