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Wind and Structures Volume 24, Number 5, May 2017 , pages 431-446 DOI: https://doi.org/10.12989/was.2017.24.5.431 |
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Concrete columns reinforced with Zinc Oxide nanoparticles subjected to electric field: buckling analysis |
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Amir Arbabi, Reza Kolahchi and Mahmood Rabani Bidgoli
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| Abstract | ||
| As concrete is most usable material in construction industry it\'s been required to improve its quality. Nowadays, nanotechnology offers the possibility of great advances in construction. In this study, buckling of horizontal concrete columns reinforced with Zinc Oxide (ZnO) nanoparticles is analyzed. Due to the presence of ZnO nanoparticles which have piezoelectric properties, the structure is subjected to electric field for intelligent control. The Column is located in foundation with vertical springs and shear modulus constants. Sinusoidal shear deformation beam theory (SSDBT) is applied to model the structure mathematically. Micro-electro-mechanic model is utilized for obtaining the equivalent properties of system. Using the nonlinear stress-strain relation, energy method and Hamilton\'s principal, the motion equations are derived. The buckling load of the column is calculated by Difference quadrature method (DQM). The aim of this study is presenting a mathematical model to obtain the buckling load of structure as well as investigating the effect of nanotechnology and electric filed on the buckling behavior of structure. The results indicate that the negative external voltage applied to the structure, increases the stiffness and the buckling load of column. In addition, reinforcing the structure by ZnO nanoparticles, the buckling load of column is increased. | ||
| Key Words | ||
| buckling of concrete column; ZnO nanoparticles; External voltage; difference quadrature method; foundation | ||
| Address | ||
| Amir Arbabi, Reza Kolahchi and Mahmood Rabani Bidgoli: Department of Civil Engineering, Jasb Branch, Islamic Azad University, Jasb, Iran | ||