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| Author(s): |
Margot Fabiana Pereira
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Carlos. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2014-02-28 |
| Examining board members: |
Ana Lúcia Homce de Cresce El Debs;
Silvana De Nardin;
Leandro Mouta Trautwein
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| Advisor: | Ana Lúcia Homce de Cresce El Debs |
| Abstract | |
Partially encased composite columns are the result of the association of a steel profile and concrete filling working together. The most commonly used steel profiles have I or H cross sections not completely covered by concrete, with filling only in the region between flanges. In Brazil, the use of partially encased composite columns is still incipient. However, the introduction of design procedures for these columns in Brazilian Code ABNT - NBR 8800:2008 and also their inherent constructive advantages have enabled the use of these elements in buildings across the country, especially for large constructions. In this context, the main objective of this work is to analyze the structural behavior of these columns and evaluate the possibility of replacing the traditional reinforcement using steel rebar for alternatives such as welded steel meshes or steel fibers added to the concrete (rate of 1.5% and 25 mm long). To achieve these goals, experimental tests on five models of partially encased composite columns submitted to axial loading and one model subjected to eccentric loading were performed. The results proved to be promising in terms of replacing the traditional reinforcement, even for the situation with eccentricity of the applied force. In addition, a numerical modeling of the studied columns was developed, using finite element based software DIANA® with FX +. Despite simplifying assumptions of perfect bond between steel and concrete, the numerical model adequately represented the behavior of the columns. (AU) | |
| FAPESP's process: | 12/07885-5 - Experimental and numerical analysis of steel-concrete composite columns |
| Grantee: | Margot Fabiana Pereira Milani |
| Support Opportunities: | Scholarships in Brazil - Master |