Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns

This paper presents an experimental investigation carried out on 10 reinforced concrete (RC) columns with L-shaped sections subjected to simulated seismic loadings. The primary objective of the study was to assess the suitability of using L-shaped RC columns in regions of low-to-moderate seismic...

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Main Authors: Pham, Thanh Phuong, Li, Bing
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2015
Subjects:
Online Access:https://hdl.handle.net/10356/81029
http://hdl.handle.net/10220/39007
https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51688053
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-810292019-12-06T14:19:54Z Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns Pham, Thanh Phuong Li, Bing School of Civil and Environmental Engineering L-shaped columns Reinforced concrete Seismic Shear strength This paper presents an experimental investigation carried out on 10 reinforced concrete (RC) columns with L-shaped sections subjected to simulated seismic loadings. The primary objective of the study was to assess the suitability of using L-shaped RC columns in regions of low-to-moderate seismic risk. The variables of interest included the axial load, loading direction, and aspect ratio. The specimen performances were analyzed and discussed in terms of crack patterns, hysteretic response, curvature distribution, displacement decomposition, strain profile, and energy dissipation capacity. Results highlighted that the L-shaped columns possessed good seismic resistance, that failure mechanism of L-shaped columns was mainly governed by vertical splitting cracks, and that shear strength of L-shaped columns was not significantly affected by the level of applied axial force and the direction of horizontal force while initial stiffness was considerably affected by aspect ratio. Further analysis showed that ignoring the contribution of flanges, the shear equation (special provisions for walls) in ACI 318-11 yields good estimations of shear strength for the cases of L-shaped columns. Published version 2015-12-09T02:38:22Z 2019-12-06T14:19:54Z 2015-12-09T02:38:22Z 2019-12-06T14:19:54Z 2015 Journal Article Pham, T. P., & Li, B. (2015). Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns. ACI Structural Journal, 112(6), 667-678. 0889-3241 https://hdl.handle.net/10356/81029 http://hdl.handle.net/10220/39007 https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51688053 en ACI Structural Journal © 2015 American Concrete Institute. This paper was published in ACI Structural Journal and is made available as an electronic reprint (preprint) with permission of American Concrete Institute. The published version is available at: [https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51688053]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 12 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic L-shaped columns
Reinforced concrete
Seismic
Shear strength
spellingShingle L-shaped columns
Reinforced concrete
Seismic
Shear strength
Pham, Thanh Phuong
Li, Bing
Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns
description This paper presents an experimental investigation carried out on 10 reinforced concrete (RC) columns with L-shaped sections subjected to simulated seismic loadings. The primary objective of the study was to assess the suitability of using L-shaped RC columns in regions of low-to-moderate seismic risk. The variables of interest included the axial load, loading direction, and aspect ratio. The specimen performances were analyzed and discussed in terms of crack patterns, hysteretic response, curvature distribution, displacement decomposition, strain profile, and energy dissipation capacity. Results highlighted that the L-shaped columns possessed good seismic resistance, that failure mechanism of L-shaped columns was mainly governed by vertical splitting cracks, and that shear strength of L-shaped columns was not significantly affected by the level of applied axial force and the direction of horizontal force while initial stiffness was considerably affected by aspect ratio. Further analysis showed that ignoring the contribution of flanges, the shear equation (special provisions for walls) in ACI 318-11 yields good estimations of shear strength for the cases of L-shaped columns.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Pham, Thanh Phuong
Li, Bing
format Article
author Pham, Thanh Phuong
Li, Bing
author_sort Pham, Thanh Phuong
title Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns
title_short Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns
title_full Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns
title_fullStr Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns
title_full_unstemmed Seismic Performance Assessment of L-Shaped Reinforced Concrete Columns
title_sort seismic performance assessment of l-shaped reinforced concrete columns
publishDate 2015
url https://hdl.handle.net/10356/81029
http://hdl.handle.net/10220/39007
https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51688053
_version_ 1681044548712660992