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Study inherent stiffness of veltical steel cylindrical tanks

Authors: A.A. Tarasenko, P.V. Chepur (Tyumen State Oil and Gas University, RF, Tyumen); S.V. Chirkov (Giprotruboprovod OAO, RF, Moscow)

Key words: inherent stiffness, RVS, steel storage tank, ANSYS, differential settlements.

Thesis

There are cases when changing the properties of the reservoir base or complete removal of the segments of the base or foundation sludge tank occurs. This paper considers the limiting case - the complete absence of sector base, varying along a circular arc. We created finite element model of RVS-20000, which takes into account all the structural elements of metal tank, including support ring girder frame and roofing sheets. Various combinations of loading are analyzed. For maximum operational loads we considered unfavorable combination. Calculations are made for filling and emptying the tank. The values of the maximum possible deformation of the outer contour of the bottom sediment are evaluated in the development of non-uniform basis for this size tank. The parameters obtained intrinsic rigidity (deformability) of reservoirs can be used to develop new technical standards for tanks.
References
1. Tarasenko A.A., Napryazhenno-deformirovannoe sostoyanie krupnogabaritnykh
rezervuarov pri remontnykh rabotakh (Stress-strain state of large
tanks during repair works): Thesis of candidate of technical science, Tyumen', 1991.
2. Tarasenko A.A., Razrabotka nauchnykh osnov metodov remonta vertikal'nykh stal'nykh rezervuarov (Development of scientific basis of methods of vertical steel tanks repair): Thesis of doctor of technical science, Tyumen', 1999.
3. Khoperskiy G.G., Tarasenko A.A., Experimental study of the deformation of the tank wall at non-uniform subsidence of foundation (In Russ.), Izvestiya
vuzov. Neft' i gaz, 1997, no. 6, pp. 128.
4. Tarasenko A.A., Nikolaev N.V., Khoperskiy G.G., Sayapin M.V., Stress-strain state of the tank wall at non-uniform subsidence of foundation (In Russ.), Izvestiya vuzov. Neft' i gaz, 1997, no. 3, pp. 75-79.
5. Khoperskiy G.G., Ovchar Z.N., Tarasenko A.A., Nikolaev N.V., Determination of non-uniform component of subsidence of tanks, causing non-axisymmetric deformation (In Russ.), Izvestiya vuzov. Neft' i gaz, 1997, no. 5, pp. 80-85.
6. Tarasenko A.A., Sayapin M.V., The results of the statistical analysis of the
measurements of non-uniform subsidence of the outer contour of the bottom
of the vertical steel tanks (In Russ.), Izvestiya vuzov. Neft' i gaz, 1999, no. 1,
pp. 52-56.
7. Tarasenko A.A., Chepur P.V., Chirkov S.V., The recearch of changes in stressstrain state vertical steel storage tanks with development of differential settlement outdoor circuit bottom(In Russ.), Fundamental'nye issledovaniya = Fundamental research, 2013, no. 10(15), pp. 3409-3413, URL: www.rae.ru/fs/?section= content&op=show_article&article_id=10002344.
8. Chepur P.V., Tarasenko A.A., Tarasenko D.A., The stress-strained state research of steel storage tankwith a lip protrusioninfluence linked outer circuit
bottom differential settlement (In Russ.), Fundamental'nye issledovaniya =
Fundamental research, 2013, no. 10(15), pp. 3441-3445, URL:
www.rae.ru/fs/?section=content&op=show_article&article_id=10002350.
9. Tarasenko A.A., Chepur P.V., Chirkov S.V., Tarasenko D.A., Steel storage oil tank simulated using ansys workbench 14.5 (In Russ.), Fundamental'nye issledovaniya = Fundamental research, 2013, no. 10(15), pp. 3404-3408, URL: www.rae.ru/fs/?section=content&op=show_article&article_id=10002343.
10. Slepnev I.V., Napryazhenno-deformirovannoe uprugo-plasticheskoe sostoyanie stal'nykh vertikal'nykh tsilindricheskikh rezervuarov pri neravnomernykh osadkakh osnovaniya (Stress-strain elastic-plastic state of steel vertical cylindrical tanks with of non-uniform subsidence of foundation): Thesis of candidate of technical science, Moscow, 1988.

Key words: inherent stiffness, RVS, steel storage tank, ANSYS, differential settlements.

Thesis

There are cases when changing the properties of the reservoir base or complete removal of the segments of the base or foundation sludge tank occurs. This paper considers the limiting case - the complete absence of sector base, varying along a circular arc. We created finite element model of RVS-20000, which takes into account all the structural elements of metal tank, including support ring girder frame and roofing sheets. Various combinations of loading are analyzed. For maximum operational loads we considered unfavorable combination. Calculations are made for filling and emptying the tank. The values of the maximum possible deformation of the outer contour of the bottom sediment are evaluated in the development of non-uniform basis for this size tank. The parameters obtained intrinsic rigidity (deformability) of reservoirs can be used to develop new technical standards for tanks.
References
1. Tarasenko A.A., Napryazhenno-deformirovannoe sostoyanie krupnogabaritnykh
rezervuarov pri remontnykh rabotakh (Stress-strain state of large
tanks during repair works): Thesis of candidate of technical science, Tyumen', 1991.
2. Tarasenko A.A., Razrabotka nauchnykh osnov metodov remonta vertikal'nykh stal'nykh rezervuarov (Development of scientific basis of methods of vertical steel tanks repair): Thesis of doctor of technical science, Tyumen', 1999.
3. Khoperskiy G.G., Tarasenko A.A., Experimental study of the deformation of the tank wall at non-uniform subsidence of foundation (In Russ.), Izvestiya
vuzov. Neft' i gaz, 1997, no. 6, pp. 128.
4. Tarasenko A.A., Nikolaev N.V., Khoperskiy G.G., Sayapin M.V., Stress-strain state of the tank wall at non-uniform subsidence of foundation (In Russ.), Izvestiya vuzov. Neft' i gaz, 1997, no. 3, pp. 75-79.
5. Khoperskiy G.G., Ovchar Z.N., Tarasenko A.A., Nikolaev N.V., Determination of non-uniform component of subsidence of tanks, causing non-axisymmetric deformation (In Russ.), Izvestiya vuzov. Neft' i gaz, 1997, no. 5, pp. 80-85.
6. Tarasenko A.A., Sayapin M.V., The results of the statistical analysis of the
measurements of non-uniform subsidence of the outer contour of the bottom
of the vertical steel tanks (In Russ.), Izvestiya vuzov. Neft' i gaz, 1999, no. 1,
pp. 52-56.
7. Tarasenko A.A., Chepur P.V., Chirkov S.V., The recearch of changes in stressstrain state vertical steel storage tanks with development of differential settlement outdoor circuit bottom(In Russ.), Fundamental'nye issledovaniya = Fundamental research, 2013, no. 10(15), pp. 3409-3413, URL: www.rae.ru/fs/?section= content&op=show_article&article_id=10002344.
8. Chepur P.V., Tarasenko A.A., Tarasenko D.A., The stress-strained state research of steel storage tankwith a lip protrusioninfluence linked outer circuit
bottom differential settlement (In Russ.), Fundamental'nye issledovaniya =
Fundamental research, 2013, no. 10(15), pp. 3441-3445, URL:
www.rae.ru/fs/?section=content&op=show_article&article_id=10002350.
9. Tarasenko A.A., Chepur P.V., Chirkov S.V., Tarasenko D.A., Steel storage oil tank simulated using ansys workbench 14.5 (In Russ.), Fundamental'nye issledovaniya = Fundamental research, 2013, no. 10(15), pp. 3404-3408, URL: www.rae.ru/fs/?section=content&op=show_article&article_id=10002343.
10. Slepnev I.V., Napryazhenno-deformirovannoe uprugo-plasticheskoe sostoyanie stal'nykh vertikal'nykh tsilindricheskikh rezervuarov pri neravnomernykh osadkakh osnovaniya (Stress-strain elastic-plastic state of steel vertical cylindrical tanks with of non-uniform subsidence of foundation): Thesis of candidate of technical science, Moscow, 1988.


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