الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
This study investigates a new method of strengthening cylindrical tanks subjected to hydrostatic load. Small amount of glass fibre-reinforced polymer (GFRP) sheets, used at a critical location, can effectively increase their buckling strength. A 3-D finite element model was developed to study the behaviour of cylindrical tanks with and without GFRP subjected to hydrostatic load. The finite element model was developed using ANSYS program. The state of instability under the influence of geometric and material nonlinearity is studied. The developed 3-D finite element model was compared and verified with previously published data.
Twelve tanks with variable dimensions and thicknesses were studied. The radii (R) of tanks selected are 5m, and 10m. The height to radius ratio values selected are 1.5, 2, and 2.5, where H is the height of the tank. The results obtained from the finite element analysis for steel tanks without and with strengthening of GFRP height equal to 0.3H and different thicknesses are presented.
Comparison between the buckling strength of perfect cylindrical steel tanks with and without GFRP is presented. The results show the benefit of using GFRP as a strengthening method for such structures. The strengthening effect is shown to be sensitive to the thickness and the location of the GFRP sheets.
Although perfect tanks are considered in this investigation, which is not the real case as the buckling strength decreases by including the imperfections, yet this, is a comparative study to show the effect of strengthening cylindrical tanks with GFRP.