Open AccessSimplified biaxial column interaction charts
Author(s) -
AlAnsari Mohammed Salem,
Afzal Muhammad Shekaib
Publication year - 2019
Publication title -
engineering reports
Language(s) - English
Resource type - Journals
ISSN - 2577-8196
DOI - 10.1002/eng2.12076
Subject(s) - column (typography) , interaction overview diagram , diagram , eccentricity (behavior) , structural engineering , reciprocal , reinforcement , materials science , moment (physics) , bending , bending moment , software , computer science , mathematics , engineering , physics , statistics , programming language , classical mechanics , linguistics , philosophy , connection (principal bundle) , unified modeling language , law , political science
This paper presents a novel analytical method to generate interaction diagrams useful for the design of reinforced concrete (RC) biaxial columns. Due to the introduction of new classes in concrete compressive strength (f c ') with somewhat different parameters for the steel grades (f y ) , it has become necessary to develop new interaction diagrams. The interaction diagram of any desired level of gamma ( γ ) can be generated to find the required axial load capacity (P c ) and moment capacity ( M cx , M cy ) of the columns having different reinforcement ratios (ρ). In addition, this study reports some numerical examples using the proposed interaction charts (Reciprocal as well as the equivalent uniaxial eccentricity method) to find the values of P c and ( M cx , M cy ) for the columns subjected to biaxial bending. The obtained results are compared with a conventional method (ie, the computer software SP‐Column). The obtained results are promising, as the values obtained by the Interaction Charts and the conventional method appear to be in good agreement.