Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection
As reinforced concrete (RC) walls with different principal bending axes are connected by the floor diaphragms, unsymmetrical bending is frequently expected for structural members in resisting the lateral loads. In these cases, a portion of lateral reaction forces is anticipated to be perpendicular t...
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sg-ntu-dr.10356-1646172023-02-06T08:37:41Z Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection Zhang, Zhongwen Li, Bing School of Civil and Environmental Engineering Engineering::Civil engineering Structural Walls Fibre Element Model As reinforced concrete (RC) walls with different principal bending axes are connected by the floor diaphragms, unsymmetrical bending is frequently expected for structural members in resisting the lateral loads. In these cases, a portion of lateral reaction forces is anticipated to be perpendicular to the lateral deflection of the members which causes shear deformation and additional curvature perpendicular to the loading plane. This paper investigates these out-of-plane deformations and curvatures and their influences. Magnitude of these shear deformations and curvatures are investigated with experimental data and a theoretical solution. The results confirm that the out-of-plane curvature is related with disproportional shear and flexural stiffness of the wall in different principal bending directions and can account for a significant portion of the in-plane curvature. The curvature could introduce significantly higher strain and render the member more vulnerable to out-of-plane buckling. Methods for modelling the curvature in structural system are proposed based on nonlinear fibre element model. This work was financially supported by Natural Science Foundation of China (52108275), the National Key R&D Program of China (Grant No.2019YFC1509304) and Natural Science Foundation of Jiangsu Province (BK20190365). 2023-02-06T08:37:41Z 2023-02-06T08:37:41Z 2022 Journal Article Zhang, Z. & Li, B. (2022). Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection. Structures, 45, 586-597. https://dx.doi.org/10.1016/j.istruc.2022.09.049 2352-0124 https://hdl.handle.net/10356/164617 10.1016/j.istruc.2022.09.049 2-s2.0-85138561895 45 586 597 en Structures © 2022 Published by Elsevier Ltd on behalf of Institution of Structural Engineers. All rights reserved. |
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Engineering::Civil engineering Structural Walls Fibre Element Model Zhang, Zhongwen Li, Bing Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
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As reinforced concrete (RC) walls with different principal bending axes are connected by the floor diaphragms, unsymmetrical bending is frequently expected for structural members in resisting the lateral loads. In these cases, a portion of lateral reaction forces is anticipated to be perpendicular to the lateral deflection of the members which causes shear deformation and additional curvature perpendicular to the loading plane. This paper investigates these out-of-plane deformations and curvatures and their influences. Magnitude of these shear deformations and curvatures are investigated with experimental data and a theoretical solution. The results confirm that the out-of-plane curvature is related with disproportional shear and flexural stiffness of the wall in different principal bending directions and can account for a significant portion of the in-plane curvature. The curvature could introduce significantly higher strain and render the member more vulnerable to out-of-plane buckling. Methods for modelling the curvature in structural system are proposed based on nonlinear fibre element model. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Zhang, Zhongwen Li, Bing |
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Article |
author |
Zhang, Zhongwen Li, Bing |
author_sort |
Zhang, Zhongwen |
title |
Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
title_short |
Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
title_full |
Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
title_fullStr |
Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
title_full_unstemmed |
Influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
title_sort |
influences of the unsymmetrical bending on behaviour of structural members with a restrained lateral deflection |
publishDate |
2023 |
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https://hdl.handle.net/10356/164617 |
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1759058781066493952 |