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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Main Authors: Zhang, Zhongwen, Li, Bing
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/164617
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Institution: Nanyang Technological University
Language: English
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spelling 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.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Structural Walls
Fibre Element Model
spellingShingle 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
description 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.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhang, Zhongwen
Li, Bing
format 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
url https://hdl.handle.net/10356/164617
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