Seismic Behavior of Flanged Reinforced Concrete Shear Walls Under Cyclic Loading

Wang, Bin; Shi, Qingxuan; Cai, Wenzhe

doi:10.14359/51702379

Cited by 21 publications

(22 citation statements)

References 6 publications

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“…e wall is 100 mm thick with a web length of 1000 mm and a flange length of 900 mm. More detailed experimental information is available elsewhere [12]. For numerical analysis, the wall crosssection is discretized into small fiber elements, as shown in Figure 1…”

Section: Moment-curvature Analysesmentioning

confidence: 99%

“…Due to the difficulties in accurately measuring the curvatures during the test, to evaluate the capability of the numerical model, the moment-curvature curves calculated by XTRACT were transformed into lateral load-flexural displacement curves via the lumped plastic hinge model to compare with the experimental skeleton curves of the cyclic tests on T-shaped walls completed by the author [12], as shown in Figure 3. e reader is referred to the work by Brueggen [18] for the detailed calculation process using the lumped plastic hinge model.…”

Section: Model Verificationmentioning

confidence: 99%

“…To further verify the accuracy of the proposed formulas to estimate the yield curvature, the yield displacements calculated from the yield curvatures are compared with the experimental results of asymmetric flanged walls tested by Wang et al [12] and omsen and Wallace [20], as listed in Table 2. ese two experiments were conducted to investigate the influence of detailing at the boundaries on deformation properties of T-shaped walls, and all the test specimens failed in flexure.…”

Section: Verificationmentioning

confidence: 99%

“…e cyclic tests of T-shaped and L-shaped walls completed by the author [12] show that the bearing capacity, stiffness, and ductility of asymmetric flanged walls strongly depend on the loading direction and significantly differ from those of rectangular walls. In particular, a larger deformation capacity can be achieved for the case with the flange in compression, while brittle behaviour and higher stiffness are observed for the case with the flange in tension.…”

Section: Introductionmentioning

confidence: 96%

See 3 more Smart Citations

Simplified Data‐Driven Model for the Moment Curvature of T‐Shaped RC Shear Walls

Wang

Cai

Shi

2019

Advances in Civil Engineering

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Sectional deformation quantities, such as curvature and ductility, are of prime significance in the displacement-based seismic design and performance evaluation of structural members. However, few studies on the estimates of curvatures at different limit states have been performed on asymmetric flanged walls. In this paper, a parametric study was performed for a series of T-shaped wall cross-sections based on moment-curvature analyses. By investigating the effects of the axial load ratio, reinforcement content, material properties, and geometric parameters on curvatures at the yield and ultimate limit state, we interpret the variation in curvature with different influencing factors in detail according to the changes of the neutral axis depth. Based on the regression analyses of the numerical results of 4941 T-shaped cross-sections, simple expressions to estimate the yield curvature and ultimate curvature for asymmetric flanged walls are developed, and simplified estimates of the ductility capacity including curvature ductility and displacement ductility are further deduced. By comparing with the experimental results, we verify the accuracy of the proposed formulas. Such simple expressions will be valuable for the determination of the displacement response of asymmetric flanged reinforced concrete walls.

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Section: Moment-curvature Analysesmentioning

confidence: 99%

Section: Model Verificationmentioning

confidence: 99%

Section: Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Simplified Data‐Driven Model for the Moment Curvature of T‐Shaped RC Shear Walls

Wang

Cai

Shi

2019

Advances in Civil Engineering

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“…The final failure modes and the hysteretic curves for all three specimens are shown in Figures and , respectively. More detailed experimental information can be found elsewhere …”

Section: Experimental Programmementioning

confidence: 99%

Decoupling and analysis of the deformation of flanged reinforced concrete shear walls

Wang

Shi

Cai

2019

Structural Design Tall Build

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Summary Compared with rectangular walls, a relatively large proportion of shear deformations are expected for flanged walls due to their larger flexural capacity. As few well‐documented experimental data are available to assess the attributes of the various deformation components of flanged walls, the feasibility of using established models to predict the deformation capacity of flanged walls is debatable. This study presents experimental results for three large‐scale T‐shaped reinforced concrete walls under cyclic loading to examine the relative contributions of flexural, shear, and sliding deformations to lateral displacement. By using a high‐precision and noninterference measurement method based on particle image velocimetry, the deformation components were decoupled to investigate the variation in each deformation component with the total deformation corresponding to the damage evolution process. For flexure‐dominant T‐shaped walls, the ratio of shear‐to‐total deformations in the plastic hinge region slowly increases over the entire plastic range, whereas the ratio of shear‐to‐total top displacements remains approximately constant. When predicting the deformation capacity of flanged walls, shear deformations but not the contribution of sliding deformations should be considered. Based on the proportional relationship between shear strain and curvature, a simple model for estimating the shear deformations of flexure‐dominant flanged walls is proposed.

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Seismic behavior of flanged reinforced concrete shear walls with high‐strength stirrup under cyclic loading

Zhang

Junxiong

Zhang

2021

Structural Design Tall Build

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Summary Twelve half‐scale flanged reinforced concrete (RC) shear wall specimens with high‐strength stirrup were tested to failure under cyclic loading. The effects of axial load ratio, aspect ratio, and web confinement on seismic performances were critically examined. All specimens showed an expected flexural‐dominant behavior, with the crushing of the compressed concrete and the buckling of reinforcement at the boundary elements. The axial load ratio was found to have significant effects to the seismic behavior of the shear walls. Higher loading capacity and lower ductility capacity can be achieved with increases in the axial load ratio. The hysteretic curves of the walls were all unsymmetrical, especially in T‐shaped walls. The specimens showed higher strength and stiffness, but lower ductility capacity when the web was in compression. The use of high‐strength stirrups can effetely confine the compressed concrete and postpone bucking of longitudinal rebars in the free web boundary, thus preventing premature failure when web was in compression. The plastic deformation capacity of all the test specimens was all excellent, and the ultimate drift ratio of all specimens greatly exceeded the allowable inter‐story drift ratio value (1/120) of RC shear wall in accordance with the design provisions of Chinese GB50011‐2010 code.

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Seismic Behavior of Flanged Reinforced Concrete Shear Walls Under Cyclic Loading

Cited by 21 publications

References 6 publications

Simplified Data‐Driven Model for the Moment Curvature of T‐Shaped RC Shear Walls

Simplified Data‐Driven Model for the Moment Curvature of T‐Shaped RC Shear Walls

Decoupling and analysis of the deformation of flanged reinforced concrete shear walls

Seismic behavior of flanged reinforced concrete shear walls with high‐strength stirrup under cyclic loading

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