Computers and Concrete

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Seismic response of SiO2 nanoparticles-reinforced concrete pipes based on DQ and newmark methods

  • Motezaker, Mohsen (Department of Civil Engineering, School of Science and Engineering, Sharif University of Technology, International Campus) ;
  • Kolahchi, Reza (Department of Mechanical Engineering, Kashan Branch, Islamic Azad University)
  • Received : 2017.04.11
  • Accepted : 2017.05.18
  • Published : 2017.06.25
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Abstract

Dynamic analysis of a concrete pipes armed with Silica ($SiO_2$) nanoparticles subjected to earthquake load is presented. The structure is modeled with first order shear deformation theory (FSDT) of cylindrical shells. Mori-Tanaka approach is applied for obtaining the equivalent material properties of the structure considering agglomeration effects. Based on energy method and Hamilton's principle, the motion equations are derived. Utilizing the harmonic differential quadrature method (HDQM) and Newmark method, the dynamic displacement of the structure is calculated for the Kobe earthquake. The effects of different parameters such as geometrical parameters of pipe, boundary conditions, $SiO_2$ volume percent and agglomeration are shown on the dynamic response of the structure. The results indicate that reinforcing the concrete pipes by $SiO_2$ nanoparticles leads to a reduction in the displacement of the structure during an earthquake.

Keywords

References

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