Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load
Based on the project of Modaoxi Bridge, an experimental study on the compressive behavior of ultrahigh strength concrete filled steel tube (UHSCFST) short column was conducted. A total of 9 UHSCFST specimens were tested, and the cube strength (fcu) of the core concrete reached 115.4 MPa. Main parame...
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| Format: | Article |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/8410895 |
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| author | Xiaojun Zhou Tingmin Mou Hongyuan Tang Bikun Fan |
| author_facet | Xiaojun Zhou Tingmin Mou Hongyuan Tang Bikun Fan |
| author_sort | Xiaojun Zhou |
| collection | DOAJ |
| description | Based on the project of Modaoxi Bridge, an experimental study on the compressive behavior of ultrahigh strength concrete filled steel tube (UHSCFST) short column was conducted. A total of 9 UHSCFST specimens were tested, and the cube strength (fcu) of the core concrete reached 115.4 MPa. Main parameters were the confining factor (ξ=0.608, 0.919, and 1.015), steel ratio (α=14.67%, 20.02%, and 21.98%), and steel strength (fy = 349 MPa, 352 MPa, and 427 MPa). The axially loading test results showed that the visible damage of steel tube occurred under the ultimate load. The higher the confining effect, the less the damage features. And all specimens basically presented a drum-type failure mode. The confining effect of steel tube effectively changed the brittle failure mode of ultrahigh strength concrete (UHSC) and tremendously improved the load bearing capacity and ductility of specimens. Moreover, the higher the steel ratio and steel strength of the specimens, the stronger the confining effect. Meanwhile the excellent mechanical properties will be obtained. Also it is recommended that the UHSCFST prefers Q345 or above strength steel tube to ensure sufficient ductility, and the steel ratio should be more than 20%. Furthermore, the confining effect of steel tubes can improve the ultimate bearing capacity of the ultrahigh strength CFST short columns. |
| format | Article |
| id | doaj-art-601f8b7e957241b18ea8ce06784ea62e |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-601f8b7e957241b18ea8ce06784ea62e2025-08-20T02:35:18ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/84108958410895Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial LoadXiaojun Zhou0Tingmin Mou1Hongyuan Tang2Bikun Fan3School of Architecture and Civil Engineering, Xihua University, Chengdu 610039, ChinaSichuan Provincial Transport Department Highway Planning, Survey, Design and Research Institute, Chengdu 610041, ChinaSchool of Architecture and Civil Engineering, Xihua University, Chengdu 610039, ChinaSichuan Provincial Transport Department Highway Planning, Survey, Design and Research Institute, Chengdu 610041, ChinaBased on the project of Modaoxi Bridge, an experimental study on the compressive behavior of ultrahigh strength concrete filled steel tube (UHSCFST) short column was conducted. A total of 9 UHSCFST specimens were tested, and the cube strength (fcu) of the core concrete reached 115.4 MPa. Main parameters were the confining factor (ξ=0.608, 0.919, and 1.015), steel ratio (α=14.67%, 20.02%, and 21.98%), and steel strength (fy = 349 MPa, 352 MPa, and 427 MPa). The axially loading test results showed that the visible damage of steel tube occurred under the ultimate load. The higher the confining effect, the less the damage features. And all specimens basically presented a drum-type failure mode. The confining effect of steel tube effectively changed the brittle failure mode of ultrahigh strength concrete (UHSC) and tremendously improved the load bearing capacity and ductility of specimens. Moreover, the higher the steel ratio and steel strength of the specimens, the stronger the confining effect. Meanwhile the excellent mechanical properties will be obtained. Also it is recommended that the UHSCFST prefers Q345 or above strength steel tube to ensure sufficient ductility, and the steel ratio should be more than 20%. Furthermore, the confining effect of steel tubes can improve the ultimate bearing capacity of the ultrahigh strength CFST short columns.http://dx.doi.org/10.1155/2017/8410895 |
| spellingShingle | Xiaojun Zhou Tingmin Mou Hongyuan Tang Bikun Fan Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load Advances in Materials Science and Engineering |
| title | Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load |
| title_full | Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load |
| title_fullStr | Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load |
| title_full_unstemmed | Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load |
| title_short | Experimental Study on Ultrahigh Strength Concrete Filled Steel Tube Short Columns under Axial Load |
| title_sort | experimental study on ultrahigh strength concrete filled steel tube short columns under axial load |
| url | http://dx.doi.org/10.1155/2017/8410895 |
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