Improving the Methodology for Calculating the Bearing Capacity of Eccentrically Compressed Reinforced Concrete Elements Based on the Use of the Refined Curvilinear Deformation Diagrams of Concrete and Reinforcement

Alexander I. Nikulin; Al-Khawaf Ali Fadhil  Qasim

doi:10.4028/www.scientific.net/MSF.974.570

Paper Titles

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Determination of Coefficients for Defining the Deformations when Calculating Reinforced Concrete Structures on Deformation and Cracking Disclosure
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Improving the Methodology for Calculating the Bearing Capacity of Eccentrically Compressed Reinforced Concrete Elements Based on the Use of the Refined Curvilinear Deformation Diagrams of Concrete and Reinforcement
p.570

Investigation of the Effect of Reinforcing Diaphragms Ribbed Panels on their Carrying Capacity
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Cascade Strengthening of Bent Elements by Polymers with Adhesive Joints
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Improving the Methodology for Calculating the Bearing Capacity of Eccentrically Compressed Reinforced Concrete Elements Based on the Use of the Refined Curvilinear Deformation Diagrams of Concrete and Reinforcement

Abstract:

The article proposes a new approach to improving the methodology for calculating the bearing capacity of the eccentrically compressed reinforced concrete elements for cases of their loading with large eccentricities. The basis of this technique is considered as a modified version of the deformation model for the reinforced concrete resistance force. The main feature of this model is the energy approach to transforming the reference diagrams of compression and concrete tension into the diagrams of non-uniform deformation, corresponding to the stress-strain state of the compressed and stretched zones of concrete in the cross section of the eccentrically compressed reinforced concrete structures. This way there is no falling branch in the concrete diagrams obtained by this method. A calculation diagram of the steel reinforcement deformation with a physical yield point was taken as a partial function, consisting of one linear and two non-linear equations. The proposed method also shows the possibility of taking into account the greatest curvature of an eccentrically compressed reinforced concrete element in the plane of its loading. The article presents all the necessary dependencies allowing the theoretical value of the carrying capacity of an eccentrically compressed reinforced concrete element determination. The results of the numerical studies performed using the design software developed by the authors for the personal computer are given.

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Periodical:

Materials Science Forum (Volume 974)

Pages:

570-576

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.974.570

Citation:

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Online since:

December 2019

Authors:

Alexander I. Nikulin*, Al-Khawaf Ali Fadhil Qasim

Keywords:

Column Curvature, Columns Bearing Capacity, Cracking Process, Eccentric Compression, Hinge Support, Large Eccentricity, Non-Uniform Compression, Numerical Experiment, Rebar Strain Diagram as a Partial Function, Reinforced Concrete Column, Tensile Strain Diagrams

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