RESEARCH ARTICLE


Specified Domain in Nu-Mu Interaction Diagram for Logical Judgment in Numerical Analysis on Compression Reinforced Concrete Members



Yingjie Jia*, Peng Chang, Jing Sun
No.3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China.


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© 2014 Jia et al.;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Abstract

A series of specified domains in Nu-Mu interaction diagram are proposed to determine optimal reinforcement schemes for rectangular RC column sections subjected to uniaxial eccentric load. These domains divide the area covered by interaction diagram into four regions of safety zone, compression-controlled zone, balanced failure zone and tensioncontrolled zone, which can help engineer to understand all possibilities of section failure under varied reinforcement scheme when they carried out a section design for columns with numerical analysis. With the physical information included in the diagram, the domains help to establish logical judgment between practical reinforcement schemes specified by the Chinese code (GB50010-2010) and corresponding load combination (Nu, Mu) in interaction diagram, and also provide physical interpretation on any calculated result of steel consumption.

Keywords: Failure mode, logical judgment, Nu-Mu interaction diagram, specified domains, uniaxial eccentric load.



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