Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels
Due to its excellent mechanical performances, axially loaded concrete-filled steel circular tube (CFST) columns have been widely used in structural engineering. As an important long-term behaviour of CFST structures, the creep has an obvious nonlinear property under high stress levels, which makes t...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/5694630 |
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| author | Shiwei Li Yongqing Yang Wangqing Wen Aiguo Yan |
| author_facet | Shiwei Li Yongqing Yang Wangqing Wen Aiguo Yan |
| author_sort | Shiwei Li |
| collection | DOAJ |
| description | Due to its excellent mechanical performances, axially loaded concrete-filled steel circular tube (CFST) columns have been widely used in structural engineering. As an important long-term behaviour of CFST structures, the creep has an obvious nonlinear property under high stress levels, which makes the influence of creep more complicated. In this study, to analyze the impacts of nonlinear creep effect on the behaviour of axially loaded short CFST columns, a complete theoretical framework for coupling analysis of 3D creep effect and material nonlinearity was presented. First, the concrete damaged plasticity model with a uniform constraint (UCCDP) was established to simulate the plasticity and damage evolution of a concrete core. Next, based on the UCCDP, a method of 3D nonlinear creep analysis and a corresponding numerical analysis method were established and implemented in the ABAQUS secondary platform. Finally, by comparing the predicted results with the experimental results, it was observed that the method proposed to predict the creep of axially loaded short CFST columns had satisfactory accuracy. |
| format | Article |
| id | doaj-art-5e9e7b5f67354dd7ac7a3416d3b5b32c |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-5e9e7b5f67354dd7ac7a3416d3b5b32c2025-02-03T01:01:29ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/56946305694630Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress LevelsShiwei Li0Yongqing Yang1Wangqing Wen2Aiguo Yan3College of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaCollege of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaChina Railway Siyuan Survey and Design Group Company Limited, Wuhan 430063, ChinaChina Railway Siyuan Survey and Design Group Company Limited, Wuhan 430063, ChinaDue to its excellent mechanical performances, axially loaded concrete-filled steel circular tube (CFST) columns have been widely used in structural engineering. As an important long-term behaviour of CFST structures, the creep has an obvious nonlinear property under high stress levels, which makes the influence of creep more complicated. In this study, to analyze the impacts of nonlinear creep effect on the behaviour of axially loaded short CFST columns, a complete theoretical framework for coupling analysis of 3D creep effect and material nonlinearity was presented. First, the concrete damaged plasticity model with a uniform constraint (UCCDP) was established to simulate the plasticity and damage evolution of a concrete core. Next, based on the UCCDP, a method of 3D nonlinear creep analysis and a corresponding numerical analysis method were established and implemented in the ABAQUS secondary platform. Finally, by comparing the predicted results with the experimental results, it was observed that the method proposed to predict the creep of axially loaded short CFST columns had satisfactory accuracy.http://dx.doi.org/10.1155/2020/5694630 |
| spellingShingle | Shiwei Li Yongqing Yang Wangqing Wen Aiguo Yan Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels Advances in Civil Engineering |
| title | Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels |
| title_full | Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels |
| title_fullStr | Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels |
| title_full_unstemmed | Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels |
| title_short | Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels |
| title_sort | theoretical framework for creep effect analysis of axially loaded short cfst columns under high stress levels |
| url | http://dx.doi.org/10.1155/2020/5694630 |
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