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- Publisher Website: 10.1016/j.engstruct.2018.03.068
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Article: Use of analytical lateral-axial strain relation in FE analysis of axially loaded rectangular CFST columns
Title | Use of analytical lateral-axial strain relation in FE analysis of axially loaded rectangular CFST columns |
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Authors | |
Keywords | Concrete confinement Concrete-filled steel tube (CFST) Finite element analysis Triaxial stress state |
Issue Date | 2018 |
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct |
Citation | Engineering Structures, 2018, v. 166, p. 142-151 How to Cite? |
Abstract | In a rectangular concrete-filled steel tube (CFST) column under axial compression, the concrete is under non-uniform and anisotropic confining stresses. To simulate such complicated triaxial stress field, finite element (FE) modelling is an effective tool. However, most previous FE models based on the plasticity theory augmented with associated or non-associated flow rules significantly underestimate the lateral and volumetric expansions of concrete at the inelastic stage and thus require solution dependent adjustments for compensation. Herein, an analytical lateral-axial strain relation of confined concrete derived from regression analysis of published experimental results is incorporated in a new FE model for the analysis of axial loaded rectangular CFST columns. This analytical lateral-axial strain relation allows direct evaluation of the lateral strains and should more accurately predict the lateral and volumetric expansions of confined concrete than the plasticity theory. The new FE model is applied to analyse tested specimens in the literature for verification and then used in a parametric study to evaluate the ductility of axially loaded rectangular CFST columns with different structural parameters. |
Persistent Identifier | http://hdl.handle.net/10722/264571 |
ISSN | 2023 Impact Factor: 5.6 2023 SCImago Journal Rankings: 1.661 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ouyang, Y | - |
dc.contributor.author | Kwan, AKH | - |
dc.date.accessioned | 2018-10-22T07:57:11Z | - |
dc.date.available | 2018-10-22T07:57:11Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Engineering Structures, 2018, v. 166, p. 142-151 | - |
dc.identifier.issn | 0141-0296 | - |
dc.identifier.uri | http://hdl.handle.net/10722/264571 | - |
dc.description.abstract | In a rectangular concrete-filled steel tube (CFST) column under axial compression, the concrete is under non-uniform and anisotropic confining stresses. To simulate such complicated triaxial stress field, finite element (FE) modelling is an effective tool. However, most previous FE models based on the plasticity theory augmented with associated or non-associated flow rules significantly underestimate the lateral and volumetric expansions of concrete at the inelastic stage and thus require solution dependent adjustments for compensation. Herein, an analytical lateral-axial strain relation of confined concrete derived from regression analysis of published experimental results is incorporated in a new FE model for the analysis of axial loaded rectangular CFST columns. This analytical lateral-axial strain relation allows direct evaluation of the lateral strains and should more accurately predict the lateral and volumetric expansions of confined concrete than the plasticity theory. The new FE model is applied to analyse tested specimens in the literature for verification and then used in a parametric study to evaluate the ductility of axially loaded rectangular CFST columns with different structural parameters. | - |
dc.language | eng | - |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct | - |
dc.relation.ispartof | Engineering Structures | - |
dc.subject | Concrete confinement | - |
dc.subject | Concrete-filled steel tube (CFST) | - |
dc.subject | Finite element analysis | - |
dc.subject | Triaxial stress state | - |
dc.title | Use of analytical lateral-axial strain relation in FE analysis of axially loaded rectangular CFST columns | - |
dc.type | Article | - |
dc.identifier.email | Kwan, AKH: khkwan@hkucc.hku.hk | - |
dc.identifier.authority | Kwan, AKH=rp00127 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.engstruct.2018.03.068 | - |
dc.identifier.scopus | eid_2-s2.0-85044567225 | - |
dc.identifier.hkuros | 293789 | - |
dc.identifier.volume | 166 | - |
dc.identifier.spage | 142 | - |
dc.identifier.epage | 151 | - |
dc.identifier.isi | WOS:000433268500011 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0141-0296 | - |