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To study the sloshing effect of 16 x 104m³ LNG storage tanks under the near-fault ground motions and compared the responses of tanks under near fault ground motions and common ground motions, 5 near fault ground motions with different pulse period and 4 common ground motions on site II were selected as earthquake excitation, three-dimensional tank model was established by using the finite element software ADINA, and the seismic response was carried out by the dynamic time integration method. The results are as followings: the seismic responses of storage tanks under the near fault ground motions is larger than common ground motions. Near fault ground motions will cause more severe sloshing, while the pulse period is the main influencing factor. The severe sloshing of the liquid has a great impact on the inner tank wall and dome, which leads to the sudden increase of the stress and acceleration on the upper part of the tank wall, the sudden change of the dynamic hydraulic pressure of the upper liquid, the increase of the effective stress of the dome. Therefore, the anti-sloshing device should be installed in the design and construction of the large LNG storage tanks which in the fault zone to avoid the leakage and damage of the storage tanks due to excessive sloshing. [ABSTRACT FROM AUTHOR]

In order to explore the law of stress-strain for the U-shaped steel mold prefabricated concrete channel, numerical simulation was carried out under different thickness, longitudinal stiffener and transverse stiffeners with D60 U-shaped steel mold as research object by ADINA software that used for different thickness, different longitudinal stiffener numerical simulation of different ribs and transverse stiffeners of steel mold. The results indicate that the displacement of the steel mold on the straight linear segments is the maximum, the arc segments come second and the straight line connecting segments and arc segments connecting segment are the minimum. Stress in a straight line connecting segment and arcs connecting segment of steel model are the maximum, the straight linear segment and arc segments are lesser and the degree of influence of the thickness of the steel mold is larger than the number of longitudinal stiffener and the degree of influence of the number of longitudinal stiffener is larger than the number of transverse stiffener of steel model. Within the allowable deformation range, the appropriate thickness of the prefabricated concrete lining steel mold channel is 8 mm-10 mm and the appropriate number of longitudinal stiffeners is 3 to 4 and the appropriate number of transverse stiffeners is 2 (1 transverse stiffener for each straight linear segment and arc segment). [ABSTRACT FROM AUTHOR]