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Earthquakes and Structures
  Volume 12, Number 2, February 2017, pages 145-152
DOI: http://dx.doi.org/10.12989/eas.2017.12.2.145
 


Estimation of elevated tanks natural period considering fluid- structure- soil interaction by using new approaches
Pouyan Abbasi Maedeh, Ali Ghanbari and Wei Wu

 
Abstract
    The analytical method is used to develop new models for an elevated tank to estimate its natural period. The equivalent mass- spring method is used to configure the developed analytical models. Also direct method is used for numerical verification. The current study shows that developed models can have a good estimation of natural period compared with concluded results of finite elements. Additional results show that, the dependency of impulsive period to soil stiffness condition is higher than convective period. Furthermore results show that considering the fluid- structure- soil interaction has remarkable effects on natural impulsive and convective periods in case of hard to very soft soil.
 
Key Words
    elevated tanks; fluid- structure- soil interaction; analytical method; impulsive; convective
 
Address
Pouyan Abbasi Maedeh: International Campus, Kharazmi University, Tehran, I.R. Iran

Ali Ghanbari: Faculty of Engineering, Kharazmi University, Tehran, I.R. Iran

Wei Wu: Faculty of Engineering, University of Bodenkultur, Wien, Austria
 

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