seismic design of liquid retaining structures(aci 350.3r-01)_appendix a method
DESCRIPTION
automated calculation of seismic forces according to ACI 350,TRANSCRIPT
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Seismic Zone Factor Seismic Zone Factor, ZZ 0.4 Seismic Map Zone FactorOthers 5 1 0.075Soil Profile Coefficient 2A 0.15S 2 2B 0.2Others 0 3 0.3Importance Factor 4 0.4I 1.5 Others 5
(Table 4(a) ACI 350.3)Response Modification FactorRwi 4 Soil Profile Coefficient, SRwc 1 Soil Type Coeff
A 1B 1.2C 1.5D 2Others 0(Table 4(b) ACI 350.3)
Importance Factor, I
1.5
1.25
All other tanks 1(Table 4(c) ACI 350.3)
Response Modification Factor, Rw
Type of Structure
(a) Anchored, flexible-base tanks(b) Fixed- or hinged-base tanks
(d) Elevated Tanks(Table 4(d) ACI 350.3)
Tanks containing hazardous materials
Tanks that are intended to remain
usable for emergency purposes after an
earthquake, or tanks that are part of lifeline systems
(c) Unanchored, contained, or uncontained tanks
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1.51.25
1
Response Modification Factor, Rw
Type of StructureRwi
RwcAbove grade Buried
(a) Anchored, flexible-base tanks 4.5 4.5 1(b) Fixed- or hinged-base tanks 2.75 4 1
2 2.75 1
(d) Elevated Tanks 3 - 1
(c) Unanchored, contained, or uncontained
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fig.1 - tank plan & section
DATALw 1.25 m 45.10 kNL 0.80 m 6.37 kNB 1.30 mLr 1.25 m
1.50 m 0.892
1.12 m
0.25 m 46.61 kN
0.12 m 11.50 kN
0.25 m
23.58
9.8111.4 kN
f'c 21 Mpa
21538.1 Mpa
10.2 kN2.2 kN
HW
HL
tw
tr
tf
ρc kN/m3
ρL kN/m3
Ec
EQ
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8.84
3.910.49 m0.870.67 m0.75 m
281280.17
12.75
148.52 rad/s
λ 5.567
6.224 rad/s
0.042 s
1.010 s
I 1.5S 2
1.375
1.375
kN-s2/m4
kN-s2/m4
kN/m2
kN-s2/m4
ωi
ωc
Ti
Tc
Ci
Cc
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1
Z 0.4
4
1
16.60 kN4.23 kN2.63 kN4.19 kN3.55 kN
23.69 kN
y 0 m2.82 kN/m2.62 kN/m
Cv
Rwi
Rwc
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-1.07 kN/m6.24 kN/m
10.98720.2
2.19744
2.17
2.02
-0.82
kN/m2
kN/m2
kN/m2
kN/m2
kN/m2
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0.75 m1.56 m0.49 m0.87 m0.50 m0.88 m
12.45 kN-m
4.10 kN-m
2.03 kN-m
3.10 kN-m
2.11 kN-m
3.12 kN-m
18.84 kN-m
18.92 kN-m
SEISMIC FORCES TO BE APPLIED IN THE DIRECTION OF THE SEISMIC FORCELEADING HALF @ y= 0 m & TRAILLING HALF @ y 0 m
2.17
/2 1.01
/2 -0.41
2.20 <-----lateral hydrodynamic force
Mw
Mr
Mi
Mc
Mi'
Mc'
Mb
Mo
kN/m2 dmax
kN/m2
kN/m2
kN/m2
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0.66 m
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