Graph Algorithm for considering Second-Order Effects of Rc Ring-Section Columns

The calculation of ring-section reinforcement considering the second-order effect has triple nonlinearity, that is, the nonlinearity of material, geometry and section-width variation, it’s very difficult to calculate. In order to provide a fast calculation tool for the design work, a simplified mode...

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Veröffentlicht in:Wireless communications and mobile computing Jg. 2022; H. 1
Hauptverfasser: Yao, Kaicheng, He, Yingcheng, Wu, Shilong, Zhou, Donghua
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Oxford Hindawi 2022
John Wiley & Sons, Inc
Schlagworte:
Algorithms
Columns (structural)
Concrete
Equilibrium equations
Iterative methods
Iterative solution
Mathematical analysis
Nomograms
Nonlinearity
Reinforcement
Tensile strength
ISSN:1530-8669, 1530-8677
Online-Zugang:Volltext
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Zusammenfassung:The calculation of ring-section reinforcement considering the second-order effect has triple nonlinearity, that is, the nonlinearity of material, geometry and section-width variation, it’s very difficult to calculate. In order to provide a fast calculation tool for the design work, a simplified model of the ultimate curvature of the ring-section column is proposed through calculation and analysis, then calculated the second-order eccentricity by the quadratic parabola hypothesis of the second-order deflection shape of the member, and finally the simplified n-mu second-order equilibrium equation has been obtained. The three-coordinate nomogram for calculation was drawn to further facilitate the design in the paper. The hand-calculated reinforcement of the ring-section column could be done only by making 4 auxiliary lines in the diagram, avoiding iterative solution of the transcendental equation. Because of the dimensionless derivation, this nomogram is multipurpose, it could solve the calculation problems of second-order reinforcement in the case of arbitrary section size and concrete grade of C15 ~ C50.
Bibliographie:ObjectType-Article-1
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ISSN:1530-8669
1530-8677
DOI:10.1155/2022/3409368