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Dynamic stress, strain and deflection analysis of pipes conveying nanofluid buried in the soil medium considering damping effects subjected to earthquake load

  • Abadi, M. Heydari Nosrat (Department of Civil Engineering, Engineering and Management of Water Resources, Shahr-e-Qods Branch, Islamic Azad University) ;
  • Darvishi, H. Hassanpour (Department of Civil Engineering, Engineering and Management of Water Resources, Shahr-e-Qods Branch, Islamic Azad University) ;
  • Nouri, A.R. Zamani (Department of Civil Engineering, Engineering and Management of Water Resources, Shahr-e-Qods Branch, Islamic Azad University)
  • 투고 : 2019.04.06
  • 심사 : 2019.10.11
  • 발행 : 2019.11.25

초록

In this paper, dynamic stress, strain and deflection analysis of concrete pipes conveying nanoparticles-water under the seismic load are studied. The pipe is buried in the soil which is modeled by spring and damper elements. The Navier-Stokes equation is used for obtaining the force induced by the fluid and the mixture rule is utilized for considering the effect of nanoparticles. Based on refined two variables shear deformation theory of shells, the pipe is simulated and the equations of motion are derived based on energy method. The Galerkin and Newmark methods are utilized for calculating the dynamic stress, strain and deflection of the concrete pipe. The influences of internal fluid, nanoparticles volume percent, soil medium and damping of it as well as length to diameter ratio of the pipe are shown on the dynamic stress, strain and displacement of the pipe. The results show that with enhancing the nanoparticles volume percent, the dynamic stress, strain and deflection decrease.

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참고문헌

  1. Allahdadian, S. and Boroomand, B. (2016), "Topology optimization of planar frames under seismic loads induced by actual and artificial earthquake records", Eng. Struct., 115, 140-154. https://doi.org/10.1016/j.engstruct.2016.02.022.
  2. Belardinelli, M.E., Bizzarri, A. and Cocco, M. (2003), "Earthquake triggering by static and dynamic stress changes", J. Geophys. Res: Soild Earth Ban., 108, 823-834. https://doi.org/10.1029/2002JB001779.
  3. Bowles, J.E. (1988), Foundation Analysis and Design, USA.
  4. Ding, Y., Ma, R., Shi, Y.D. and Li, Zh.X. (2018), "Underwater shaking table tests on bridge pier under combined earthquake and wave-current action", Marine Struct., 58, 301-320. https://doi.org/10.1016/j.marstruc.2017.12.004.
  5. El-Helou, R.G. and Aboutaha, R.S. (2015), "Analysis of rectangular hybrid steel-GFRP reinforced concrete beam columns", Comput. Concrete, 16, 245-260. https://doi.org/10.12989/cac.2015.16.2.245.
  6. He, F., Dai, H. and Wang, L. (2018), "Vortex-induced vibrations of a pipe subjected to unsynchronized support motions", J. Marine Sci. Technol., 23(4), 978-990. https://doi.org/10.1007/s00773-017-0526-y.
  7. Hind, M.Kh., Mustafa, O ., Talha, E. and Abdolbaqi, M.Kh. (2016), "Flexural behavior of concrete beams reinforced with different types of fibers", Comput. Concrete, 18, 999-1018. https://doi.org/10.12989/cac.2016.18.5.999.
  8. Kayen, R. (2017), "Seismic displacement of gently-sloping coastal and marine sediment under multidirectional earthquake loading", Eng. Geolog., 227, 84-92. https://doi.org/10.1016/j.enggeo.2016.12.009.
  9. Kumar Mishra, S., Kumar Roy, B. and Chakraborty, S. (2013), "Reliability-based-design-optimization of base isolated buildings considering stochastic system parameters subjected to random earthquakes", Int. J. Mech. Sci., 75, 123-133. https://doi.org/10.1016/j.ijmecsci.2013.06.012.
  10. Liu, J., Wu, M., Yang, Y., Yang, G., Yan, H. and Jiang, K. (2018), "Preparation and mechanical performance of graphene concrete platelet reinforced titanium nanocomposites for high temperature applications", Comput. Concrete, 22, 355-363. https://doi.org/10.1016/j.jallcom.2018.06.148.
  11. O'Leary, P.M. and Datta, S.K. (1985), "Dynamics of buried pipelines", Soil Dyn. Earthq. Eng., 4, 151-159. https://doi.org/10.1016/0261-7277(85)90009-9.
  12. Pioldi, F., Salvi, J. and Rizzi, E. (2017), "Refined FDD modal dynamic identification from earthquake responses with Soil-Structure Interaction", Int. J. Mech. Sci., 127, 47-61. https://doi.org/10.1016/j.ijmecsci.2016.10.032.
  13. Powell, G.H. (1978), "Seismic response analysis of above-ground pipelines", Eqrth. Eng. Struct. Dyn., 6, 157-165. https://doi.org/10.1002/eqe.4290060204.
  14. Pradyumna, S. and Bandyopadhyay, J.N. (2008), "Free vibration analysis of functionally graded curved panels using a higherorder finite element formulation", J. Sound Vib., 318, 176-192. https://doi.org/10.1016/j.jsv.2008.03.056.
  15. Simsek, M. (2010), "Non-linear vibration analysis of a functionally graded Timoshenko beam under action of a moving harmonic load", Compos. Struct., 92, 2532-46. https://doi.org/10.1016/j.compstruct.2010.02.008.
  16. Thai, H.T. and Choi, D.H. (2011), "A refined plate theory for functionally graded plates resting on elastic foundation", Compos. Sci. Technol., 71, 1850-1858. https://doi.org/10.1016/j.compscitech.2011.08.016.
  17. Wang, Zh., Yang, Y., Yu, H.S. and Muraleetharan, K.K. (2018), "Numerical simulation of earthquake-induced liquefactions considering the principal stress rotation", Soil Dyn. Earthq. Eng., 90, 432-441. https://doi.org/10.1016/j.soildyn.2016.09.004.
  18. Wu, X., Lu, H., Huang, K., Wu, Sh. and Qiao, W. (2015), "Frequency spectrum method-based stress analysis for oil pipelines in earthquake disaster areas", PLoS One, 10, e0115299. https://doi.org/10.1371/journal.pone.0115299.
  19. Zamani Nouri, A. (2017), "Mathematical modeling of concrete pipes reinforced with CNTs conveying fluid for vibration and stability analyses", Comput. Concrete, 19, 325-331. https://doi.org/10.12989/cac.2017.19.3.325.
  20. Zamani Nouri, A. (2018a), "The effect of $Fe_2O_3$ nanoparticles instead cement on the stability of fluid-conveying concrete pipes based on exact solution", Comput. Concrete, 21, 31-37. https://doi.org/10.12989/cac.2018.21.1.031.
  21. Zamani Nouri, A. (2018b), "Vibration analysis of silica nanoparticle-reinforced concrete pipes filled with compressible fluid surrounded by soil foundation", Struct. Concrete, 19(4), 1195-1201. https://doi.org/10.1002/suco.201700185.
  22. Zamani Nouri, A. (2018c), "Seismic response of soil foundation surrounded $Fe_2O_3$ nanoparticles reinforced concrete pipes conveying fluid", Soil Dyn. Earthq. Eng., 106, 53-59. https://doi.org/10.1016/j.soildyn.2017.12.009.
  23. Zhao, Ch., Chen, J., Wang, J., Yu, N. and Xu, Q. (2017), "Seismic mitigation performance and optimization design of NPP water tank with internal ring baffles under earthquake loads", Nucl. Eng. Des., 318, 182-201. https://doi.org/10.1016/j.nucengdes.2017.04.023.