Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction
Current methods of splicing columns with different depth sizes have a long total load path as well as large and expensive details. These details are sometimes overly complicated and hard to fabricate. To shorten the load path and make fabrication easier and more economical, a middle plate is propose...
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| Format: | Article |
| Language: | fas |
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Sharif University of Technology
2023-12-01
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| Series: | مهندسی عمران شریف |
| Subjects: | |
| Online Access: | https://sjce.journals.sharif.edu/article_23116_3be1f09c3b901c58b0f935145ac025da.pdf |
| _version_ | 1797374993010524160 |
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| author | Sh. Mahdlooyi A.R. Ghiami Azad S.R. Mirghaderi |
| author_facet | Sh. Mahdlooyi A.R. Ghiami Azad S.R. Mirghaderi |
| author_sort | Sh. Mahdlooyi |
| collection | DOAJ |
| description | Current methods of splicing columns with different depth sizes have a long total load path as well as large and expensive details. These details are sometimes overly complicated and hard to fabricate. To shorten the load path and make fabrication easier and more economical, a middle plate is proposed in this study to be placed between the two columns to connect them. The plate is butt-welded to both the lower and the upper portions of the column. Although this type of splice has been used occasionally in steel structures, its behavior is mainly unknown and research and code specifications regarding this type of splice are very limited. The current research studied the overall behavior of columns connected by this type of splice and obtained the minimum plate thickness required for typical columns to meet codes provisions. To provide the possibility of filling potential hollow sections with concrete, it is recommended to use a hallow plate in box-shaped columns. This study conducted finite element analysis on box- and H-shaped columns with different upper column depths. The influence of the plate thickness and shape on the strength and stiffness of splice in each combination was studied and minimum plate thickness was obtained. The splice exhibited satisfactory strength and stiffness in regular combinations. In combination with an upper column depth reduction of less than 5cm in box-shaped profiles and less than 7.5cm in the H-shaped profiles, the splice plate with a thickness of 5cm or more meets the criteria for both strength and stiffness. Decreasing the upper column depth increases the demand on the splice plate and a thicker plate is needed. Moreover, the shape of the splice plate, i.e., hollow plate or regular plate, had a large impact on the column behavior as the required thickness was greater in hollow plates. Results of stiffness analysis showed that decreasing the upper column depth and overall height of the column decreases the axial stiffness of the column. |
| first_indexed | 2024-03-08T19:13:47Z |
| format | Article |
| id | doaj.art-a93087db92a74ac4b4587fdfd2fe99a6 |
| institution | Directory Open Access Journal |
| issn | 2676-4768 2676-4776 |
| language | fas |
| last_indexed | 2024-03-08T19:13:47Z |
| publishDate | 2023-12-01 |
| publisher | Sharif University of Technology |
| record_format | Article |
| series | مهندسی عمران شریف |
| spelling | doaj.art-a93087db92a74ac4b4587fdfd2fe99a62023-12-27T08:19:41ZfasSharif University of Technologyمهندسی عمران شریف2676-47682676-47762023-12-0139.23839610.24200/j30.2023.61435.317423116Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate ConstructionSh. Mahdlooyi0A.R. Ghiami Azad1S.R. Mirghaderi2School of Civil Engineering College of Engineering University of TehranSchool of Civil Engineering College of Engineering University of TehranSchool of Civil Engineering College of Engineering University of TehranCurrent methods of splicing columns with different depth sizes have a long total load path as well as large and expensive details. These details are sometimes overly complicated and hard to fabricate. To shorten the load path and make fabrication easier and more economical, a middle plate is proposed in this study to be placed between the two columns to connect them. The plate is butt-welded to both the lower and the upper portions of the column. Although this type of splice has been used occasionally in steel structures, its behavior is mainly unknown and research and code specifications regarding this type of splice are very limited. The current research studied the overall behavior of columns connected by this type of splice and obtained the minimum plate thickness required for typical columns to meet codes provisions. To provide the possibility of filling potential hollow sections with concrete, it is recommended to use a hallow plate in box-shaped columns. This study conducted finite element analysis on box- and H-shaped columns with different upper column depths. The influence of the plate thickness and shape on the strength and stiffness of splice in each combination was studied and minimum plate thickness was obtained. The splice exhibited satisfactory strength and stiffness in regular combinations. In combination with an upper column depth reduction of less than 5cm in box-shaped profiles and less than 7.5cm in the H-shaped profiles, the splice plate with a thickness of 5cm or more meets the criteria for both strength and stiffness. Decreasing the upper column depth increases the demand on the splice plate and a thicker plate is needed. Moreover, the shape of the splice plate, i.e., hollow plate or regular plate, had a large impact on the column behavior as the required thickness was greater in hollow plates. Results of stiffness analysis showed that decreasing the upper column depth and overall height of the column decreases the axial stiffness of the column.https://sjce.journals.sharif.edu/article_23116_3be1f09c3b901c58b0f935145ac025da.pdfcolumn splicemiddle plateminimum thicknesshollow plate |
| spellingShingle | Sh. Mahdlooyi A.R. Ghiami Azad S.R. Mirghaderi Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction مهندسی عمران شریف column splice middle plate minimum thickness hollow plate |
| title | Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction |
| title_full | Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction |
| title_fullStr | Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction |
| title_full_unstemmed | Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction |
| title_short | Proposing a Method for Splicing Steel Columns to Improve Force Path and Facilitate Construction |
| title_sort | proposing a method for splicing steel columns to improve force path and facilitate construction |
| topic | column splice middle plate minimum thickness hollow plate |
| url | https://sjce.journals.sharif.edu/article_23116_3be1f09c3b901c58b0f935145ac025da.pdf |
| work_keys_str_mv | AT shmahdlooyi proposingamethodforsplicingsteelcolumnstoimproveforcepathandfacilitateconstruction AT arghiamiazad proposingamethodforsplicingsteelcolumnstoimproveforcepathandfacilitateconstruction AT srmirghaderi proposingamethodforsplicingsteelcolumnstoimproveforcepathandfacilitateconstruction |