|
rectangular tank
Some tanks have been damaged at the roofs due to sloshing impact
caused by strong earthquakes. It is, therefore, necessary to consider
the impact force in the aseismic design code for tank roofs. However,
there are few studies on the earthquake responses of storage and
process tank roofs. As a first step to investigate the effects
of sloshing impact a series of the shaking table tests of a rectangular
tank have been conducted at the National Research Institute for
Earth Science and Disaster Prevention (NIED). The results of these
shaking table tests are presented in the paper. The test tank
is rectangular in shape having dimensions of 5 m {times} 3 m {times}
2 m length {times} width {times} height). The tank was constructed
of glass-fiber reinforced plastic panels. Every panel had a flange
on four edges, and each panel was connected by bolts along the
flange. The test tank was set on the NIED shaking table (15 m
by 15 m). Two types of liquid were used, water and a viscous liquid
(water mixed with polymeric powders). The roof impact pressures
and other quantities were measured. During the tests using the
400 pi El-Centro excitation, the roof deformation sensor steel
beam was damaged. The response of side walls with different rigidity
were measured in the wall bulging tests. The measured vibrations
within the panel plates were larger than those in the panel flanges.
The viscous liquid of 100 cp had little influence on wall bulging
responses. However, the viscous effects on sloshing responses
were observed in the sloshing tests. Approximate analyses of rectangular
tanks, considering the influence of static water pressure, are
also presented
 Please Contact Us to discuss your rectangular tank needs. You design it, we build it.
rectangular
tank
|
|
