Civil Engineering Reference
In-Depth Information
Table 4.1
Values of
m
i
/
m
l
in case of rigidly supported steel
tanks for impulsive response
h/R
H/R = 0.5
H/R = 1.0
H/R = 2.0
H/R = 3.0
0.0005
0.300
0.549
0.694
0.695
0.001
0.304
0.554
0.700
0.703
0.002
0.312
0.565
0.711
0.713
Source
:
Veletsos, A. S., and Tang, Y.,
Earthquake Eng. Struct. Dyn.
, 19, 473-496,
1990.
4.7.1 Impulsive response
For the analysis of the tank-fluid-soil interaction considering only the
impulsive mode of liquid vibration, the tank with same linear elastic
material properties as explained in Chapter 3 is considered. The values
of material properties of linear elastic soil are as follows: Poisson's ratio
=
3
and mass density = 1500 kg/m
3
. The properties of rigidly supported
steel tanks for impulsive response are listed in Tables 4.1 to 4.3 [27]. These
tables provide the values of
m
i
/
m
l
,
h
i
/
H
and
h
′
i
/
H
, respectively, for various
combinations of
h
/
R
and
H
/
R
ratios. These values are required to compute
the responses of the structure as per the formulation laid out in previous
1
Table 4.2
Values of
h
i
/
H
in case of rigidly supported steel tanks for
impulsive response
h/R H/R = 0.5 H/R = 1.0 H/R = 2.0 H/R = 3.0
0.0005 0.385 0.415 0.491 0.547
0.001 0.387 0.417 0.492 0.548
0.002 0.392 0.420 0.494 0.549
Source
: Veletsos, A. S., and Tang, Y.,
Earthquake Eng. Struct. Dyn.
, 19, 473-496,
1990.
Table 4.3
Values of
h
′
i
/H
in case of rigidly supported steel tanks for
impulsive response
h/R H/R = 0.5 H/R = 1.0 H/R = 2.0 H/R = 3.0
0.0005 1.455 0.799 0.543 0.562
0.001 1.428 0.706 0.543 0.563
0.002 1.384 0.700 0.544 0.564
Source
: Veletsos, A. S., and Tang, Y.,
Earthquake Eng. Struct. Dyn.
, 19, 473-496,
1990.
