Static Non-Linear Analysis of an RC Moment Resisting Frame by Considering Different Values for the Longitudinal Reinforcement Ratio in the Columns
Tomme: 66 (70) Fascicle: 3 | 2020
Pages: 91-106
Abstract text:
Analytical studies regarding influences of the concrete strength class on the ductile seismic energy dissipation mechanism for RC frame systems with rigid beams, register a favorable lateral response for superior concrete class. These important results are coupled with an active cracking/ yielding of the concrete/ rebars in the compressed and tensioned areas for RC columns. In these conditions, it is studied the effectiveness of the longitudinal steel reinforcement ratio for these RC structural elements. Thus, it was performed three RC frame models with ATENA software (FEM static nonlinear analysis). These type of RC frame structures (representative model with rigid beams) studied in the previous analytical research were chosen for FEM pushover analysis because they meet the most unfavorable conditions for the nonlinear strain of RC columns. The obtained results demonstrate the structural efficacy of the superior longitudinal steel reinforcement ratio of RC columns on the ductile seismic response of the RC moment resisting frame systems.
Key Words:
FEM static nonlinear analysis; RC frame system with rigid beams; longitudinal rebars; concrete strain; RC columns strain
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