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http://dx.doi.org/10.7781/kjoss.2016.28.4.293

Comparison of Allowable Axial Stress Provisions of Cylindrical Liquid Storage Tanks under Seismic Excitation  

Oh, Chang Kook (School of Civil and Environmental Engineering, Kookmin University)
Lee, So Ri (School of Civil and Environmental Engineering, Kookmin University)
Park, Jang Ho (Dept. of Civil System Engineering, Ajou University)
Bae, Doobyong (School of Civil and Environmental Engineering, Kookmin University)
Publication Information
Journal of Korean Society of Steel Construction / v.28, no.4, 2016 , pp. 293-301 More about this Journal
Abstract
Stability of cylindrical liquid storage tanks under seismic excitation could prevent catastrophic disaster of human life and economic loss. Domestic provisions on allowable compressive stress in tank walls to prohibit buckling failure are either incomplete or inconsistent, so foreign specifications such as API 650, BS EN 1998-4:2006 or New Zealand Standards are employed in stability design. In this study, response spectrum analyses are performed for plant tanks having different ratios of height to diameter or diameter to thickness to calculate hydrodynamic pressure on tank walls. Then nonlinear buckling analyses are conducted to estimate magnitude of buckling stress. By comparing analysis results with those from foreign design specifications, appropriate domestic design provisions are suggested.
Keywords
Allowable axial compressive stress; Cylindrical liquid storage tanks; Nonlinear buckling analysis; Hydrodynamic pressure; Response spectrum analysis;
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