Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading
The use of new developed high-strength steel in concrete members can reduce steel bar congestion and construction costs. This research aims to study the behavior of concrete columns reinforced with new developed high-strength steel under eccentric loading. Ten reinforced concrete columns were fabric...
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MDPI AG
2019-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/12/13/2139 |
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| author | Yonghui Hou Shuangyin Cao Xiangyong Ni Yizhu Li |
| author_facet | Yonghui Hou Shuangyin Cao Xiangyong Ni Yizhu Li |
| author_sort | Yonghui Hou |
| collection | DOAJ |
| description | The use of new developed high-strength steel in concrete members can reduce steel bar congestion and construction costs. This research aims to study the behavior of concrete columns reinforced with new developed high-strength steel under eccentric loading. Ten reinforced concrete columns were fabricated and tested. The test variables were the transverse reinforcement amount and yield strength, eccentricity, and longitudinal reinforcement yield strength. The failure patterns were compression and tensile failure for columns subjected to small eccentricity and large eccentricity, respectively. The same level of post-peak deformability and ductility could only be obtained with a lower amount of transverse reinforcement when high-strength transverse reinforcements were used in columns subjected to small eccentricity. The high-strength longitudinal reinforcement improved the bearing capacity and post-peak deformability of the concrete columns. Furthermore, three different equivalent rectangular stress block (ERSB) parameters for predicting the bearing capacity of columns with high-strength steel are discussed based on test and simulated results. It is concluded that the China Code GB 50010-2010 overestimates the bearing capacity of columns with high-strength steel, whereas the bearing capacities computed using the America Code ACI 318-14 and Canada Code CSA A23.3-04 agree well with the test results. |
| first_indexed | 2024-04-13T02:19:48Z |
| format | Article |
| id | doaj.art-f6ecedd77f0044dca5f581cf7db92441 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T02:19:48Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f6ecedd77f0044dca5f581cf7db924412022-12-22T03:07:02ZengMDPI AGMaterials1996-19442019-07-011213213910.3390/ma12132139ma12132139Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric LoadingYonghui Hou0Shuangyin Cao1Xiangyong Ni2Yizhu Li3Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, ChinaKey Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, ChinaKey Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, ChinaKey Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, ChinaThe use of new developed high-strength steel in concrete members can reduce steel bar congestion and construction costs. This research aims to study the behavior of concrete columns reinforced with new developed high-strength steel under eccentric loading. Ten reinforced concrete columns were fabricated and tested. The test variables were the transverse reinforcement amount and yield strength, eccentricity, and longitudinal reinforcement yield strength. The failure patterns were compression and tensile failure for columns subjected to small eccentricity and large eccentricity, respectively. The same level of post-peak deformability and ductility could only be obtained with a lower amount of transverse reinforcement when high-strength transverse reinforcements were used in columns subjected to small eccentricity. The high-strength longitudinal reinforcement improved the bearing capacity and post-peak deformability of the concrete columns. Furthermore, three different equivalent rectangular stress block (ERSB) parameters for predicting the bearing capacity of columns with high-strength steel are discussed based on test and simulated results. It is concluded that the China Code GB 50010-2010 overestimates the bearing capacity of columns with high-strength steel, whereas the bearing capacities computed using the America Code ACI 318-14 and Canada Code CSA A23.3-04 agree well with the test results.https://www.mdpi.com/1996-1944/12/13/2139concrete columnseccentric loadinghigh-strength steelductilitybearing capacity |
| spellingShingle | Yonghui Hou Shuangyin Cao Xiangyong Ni Yizhu Li Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading Materials concrete columns eccentric loading high-strength steel ductility bearing capacity |
| title | Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading |
| title_full | Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading |
| title_fullStr | Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading |
| title_full_unstemmed | Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading |
| title_short | Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading |
| title_sort | research on concrete columns reinforced with new developed high strength steel under eccentric loading |
| topic | concrete columns eccentric loading high-strength steel ductility bearing capacity |
| url | https://www.mdpi.com/1996-1944/12/13/2139 |
| work_keys_str_mv | AT yonghuihou researchonconcretecolumnsreinforcedwithnewdevelopedhighstrengthsteelundereccentricloading AT shuangyincao researchonconcretecolumnsreinforcedwithnewdevelopedhighstrengthsteelundereccentricloading AT xiangyongni researchonconcretecolumnsreinforcedwithnewdevelopedhighstrengthsteelundereccentricloading AT yizhuli researchonconcretecolumnsreinforcedwithnewdevelopedhighstrengthsteelundereccentricloading |