Current design practice of biaxially loaded concrete encased steel composite stub column
By: Samanta, Amiya Kumar
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Contributor(s): Sahu, Anjana.
Publisher: Pune NICMAR 2015Edition: Vol.30(3), Jul-Sep.Description: 47-59p.Subject(s): Construction Engineering and Management (CEM)Online resources: Click here
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NICMAR Journal of construction managementSummary: Concrete encased steel columns are widely used in various construction fields, as the concrete used for encasing the structural steel section not only increases its strength and stiffness, but also protects it from fire and accidental damage. These sections are primarily designed using foreign codes, since the relevant Indian Standard code of practice does not mention any stipulation for the purpose of designing such composite columns. In India, only Institute for Steel Development and Growth (INSDAG) provides some steps in design and that too using the various references from foreign codes. In this paper, the concrete encased steel stub column under axial load and moment (uni-axial and bi-axial) has been evaluated using Eurocode 4 (EC4) and the provisions of handbook published by INSDAG. At the same time, the authors have presented a non-linear 3D finite element (FE) model for eccentrically loaded concrete encased steel composite column using the software platform of Abaqus and compared. No rebar has been included in the FE model with a view to reduce the complexity and computational effort involved in the procedure. Here, the authors mainly have made an attempt to assess the load carrying capacity of such composite column analytically following EC4 and INSDAG recommendations and review the same based on numerical simulation using 3D finite element software platform.
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2024-0898 |
Concrete encased steel columns are widely used in various construction fields, as the concrete used for encasing the structural steel section not only increases its strength and stiffness, but also protects it from fire and accidental damage. These sections are primarily designed using foreign codes, since the relevant Indian Standard code of practice does not mention any stipulation for the purpose of designing such composite columns. In India, only Institute for Steel Development and Growth (INSDAG) provides some steps in design and that too using the various references from foreign codes. In this paper, the concrete encased steel stub column under axial load and moment (uni-axial and bi-axial) has been evaluated using Eurocode 4 (EC4) and the provisions of handbook published by INSDAG. At the same time, the authors have presented a non-linear 3D finite element (FE) model for eccentrically loaded concrete encased steel composite column using the software platform of Abaqus and compared. No rebar has been included in the FE model with a view to reduce the complexity and computational effort involved in the procedure. Here, the authors mainly have made an attempt to assess the load carrying capacity of such composite column analytically following EC4 and INSDAG recommendations and review the same based on numerical simulation using 3D finite element software platform.
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