Investigation of the seismic behavior of the on ground quadroplete elliptical tanks

Document Type : Original Article

Authors

1 Department of engineering, University of Qom,, Iran

2 Assistant Professor, Department of Civil Engineering, Faculty of Technology and the University of Qom, Qom, Iran

3 Assistant Professor, department of Civil Engineering, Qom University, Qom, Iran

Abstract

The seismicbehavior of the on ground quadroplete elliptical tanks has been investigated in the current study. Basically, the tank is a structure used to store different types of fluid, and it is also widely used in refineries, sewage treatment plants and factories in the form of on ground and elevated tanks made from concrete and steel. Regarding the application of the huge dynamic and hydrodynamic loads on a tank at the time of earthquake and the great importance of the structure’s complete function continuity in the critical situations, it is highly important to study its seismic behavior. Among the different analyses, the seismic analysis of the tank is highly important because by investigating the results obtained from this analysis, a useful recognition of the quality of the tank’s behavior at the time of a real earthquake can be obtained. The monoplete and quadroplete on ground elliptical tanks have been dinamicallyanalyzedunder Cape and Tabas and Manjil earthquakes simoultaneously in the longitudinal and transverse directions in various conditions of prolateness and slenderness of the tankand the maximum impulsive pressure and the maximum wave height parameters of corresponding cases have been compared with eachother in the current research. By study of the concluded diagrams, it was revealed that the reductionpercent of the maximum impulsive pressure and the maximum wave height parameters due to partitioning of the tank is higher in the more slender tanks. It also was revealed that the reductionpercent of the maximum impulsive pressure and the maximum wave height parameters due to partitioning of the tank is lower in the more prolate tanks.

Keywords

Main Subjects


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