M. Isaacson et Cs. Ryu, DIRECTIONAL EFFECTS OF EARTHQUAKE-INDUCED SLOSHING IN RECTANGULAR TANKS, Canadian journal of civil engineering (Print), 25(2), 1998, pp. 376-382
The influence of the direction of earthquake motions on the hydrodynam
ic loads on a fluid-filled rectangular tank and on the associated ampl
itudes of the water surface elevation is investigated. A superposition
of the closed-form solution for motion parallel to a pair of sides is
used to develop analytical results for an arbitrary direction of moti
on. The resulting solution is used to examine the effects of motion di
rection on the maximum force on the tank for both harmonic and earthqu
ake-induced motions. For a harmonic motion, the highest loads occur fo
r a motion parallel to a pair of sides, whereas the highest elevations
generally occur for an intermediate direction of motion. For an earth
quake-induced motion, both the highest loads and the highest elevation
s occur for a motion parallel to a pair of sides. An example applicati
on is provided, and the implication of the results on the design of re
ctangular tanks is indicated.