Abstract
A reinforced concrete column is classified as compression structural element mostly analyzed and designed due to the applied combinations of dead and live loading with other considered loadings. Industries of considerable or relatively great size, production and electrical utilities are very concerned about the presence of dynamic loads in their electrical power systems. This behavior provides current with different components that are multiples of the fundamental frequency of the system which are called harmonics. Reinforced concrete elements such as column must be checked for the strength capacity and the response due to applied harmonic loading after completed the static analysis and design. In present article evaluations of reinforced concrete columns under the effects of dynamic harmonic loadings are studied. The main parameters are the reinforcement ratio and harmonic ranged loadings. Finite elements approach was adopted to analyze the columns by ANSYS software and all models are simulated in three dimensions. The analysis results indicated that the square cross sections with that rectangular of the same cross sectional area are closed in performance against static and dynamic loadings.
Highlights
The response of reinforced concrete columns to dynamic loadings are very important to check out the static design of columns and to make the structural building safe in case of presence of dynamic loading
Different cross sections of columns were tested and the results showed the excitation of the column significant as nonlinear behavior of the column
The nonlinear damping analysis using numerical method was adopted and the results indicated that the dynamic response of reinforced concrete columns (RCC) more effectively reduced in case of taking into account the nonlinear damping analysis
Summary
The response of reinforced concrete columns to dynamic loadings are very important to check out the static design of columns and to make the structural building safe in case of presence of dynamic loading. In 2004, Hideaki Nishida and Shigeki Unjoh [1], studied the performance of reinforced concrete columns (RCC) under the effects of dynamic loading such as earthquake. Different cross sections of columns were tested and the results showed the excitation of the column significant as nonlinear behavior of the column. The square RCC with pin ended boundary condition was explored taking into account different slenderness ratios. The test results showed that stress at failure load decreased as the column size increased. Columns under the effects of dynamic harmonic loading with different parameters such as frequency ranges, longitudinal and transverse reinforcement will be
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