response spectral indonesia code of sumatera island
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7/25/2019 Response Spectral Indonesia Code of Sumatera Island
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TOYOHASHI UNIVERSITY OF TECHNOLOGHY
Response Spectral
AnalysisNATIONAL INDONESIA STANDRT
JODY SETIAWAN
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Response Spectral Analysis
1.1 Introduction
One important point for design building in high seismic area must consider MCER. MCER is
maximum consider leel of ground sha!ing that may eer be expected at the building site. In
Indonesian S"I 1#$%&$'1$ MCER is ta!en as $ ( probability of being exceeded in )' years.
Many factors *ill be used to determine response spectral analysis in MCER condition of S"I
CO+E 1#$%&$'1$, the factors are -
1. a / amplification factor for '.$ second period response0
$. / amplification factor for 1.' second period response0
. Ss / Mapped parameter response spectral of site acceleration for '.$ second period 0
2. S1/Mapped parameter response spectral of site acceleration for 1.' second period0). SMS / 3arameter response spectral of site acceleration for '.$ second period0
%. SM1 / 3arameter response spectral of site acceleration for 1.' second period0
#. S+S / 3arameter response spectral of design for '.$ second period 0
4. S+1 /3arameter response spectral of design for 1.' second period05. 6 /undamental of time period0
1.$ +etermining the design response spectral
6he figure 1 can represent design response spectral of Indonesia Code. 6he e7uation *ill be used
to determine notation of figure 1 are follo*ing *ith these e7uation .
SMS 8 a x Ss
SM1 8 x S1
S+S 8 $9 x SMS
S+1 8 $9 SM1
for period smaller than 6', response spectral design of acceleration must follo* *ith this
e7uation.
Sa 8 S+S x / '.2 : '.% x /696'00
for period bigger than 6S, response spectral design of acceleration must follo* *ith this
e7uation.
Sa 8 S+196
1. Example of calculation response spectral of Indonesia Code
Figre !" #esign response
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Response Spectral Analysis
;oundary Conditions - <ocation of city is 3adang city, Soil Condition is Soft soil.
;ased on the figure 1..1 and 1..$ alue Ss and S1 for 3adang city are 1.54 /Ss0 '.% g/S10 and
;ased on the table 1..1 and 1..$ alue fa and f for 3adang city are '.5 /a0 $.2 /0.
Figre !"$"! Ss %a&i'' Eart()a*e +%CER+ con#ition
Figre !"$", S! %a&i'' Eart()a*e +%CER+ con#ition
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Response Spectral Analysis
6able 1..1 a /amplification factor for short period0
SI6E
C<ASS
MA33E+ S3EC6RA< RES3O"SE ACCE<ERA6IO" A6 AS=OR6 3ERIO+
Ss > '.$) Ss 8 '.) Ss > '.$) Ss 8 '.#) Ss ? 1.$)
SA '.4 '.4 '.4 '.4 '.4
S; 1.' 1.' 1.' 1.' 1.'
SC 1.$ 1.$ 1.1 1.' 1.'
S+ 1.% 1.2 1.$ 1.1 1.'
SE $.) 1.# 1.$ '.5 '.5
SA 8 =ard roc! S; 8 Roc! SC 8 +ense Soil S+ 8 Stiff soil SE 8Soft Soil
*for value between SS value, can be calculated by linear interpolation
6able 1..$ /amplification factor for long period0
SI6E C<ASS MA33E+ S3EC6RA< RES3O"SE ACCE<ERA6IO" A6 AS=OR6 3ERIO+
S1> '.1 S1 8 '.$ S1 8 '.$ S1 8 '.2 S1 ? '.)
SA '.4 '.4 '.4 '.4 '.4
S; 1.' 1.' 1.' 1.' 1.'
SC 1.# 1.% 1.) 1.2 1.
S+ $.2 $.' 1.4 1.% 1.)
SE .) .$ $.4 $.2 $.2
SA 8 =ard roc! S; 8 Roc! SC 8 +ense Soil S+ 8 Stiff soil SE 8Soft Soil
*for value between SS value, can be calculated by linear interpolation
@Example of calculation SS and S1
SS 8 '.%, S1 8 '., soil condition is soft soil
y2=( x 2− x 1 ) ( y 3− y 1 )
( x 3− x 1 ) + y1
SS= (0.6−0.25 ) (0.9−1.2 )(0.75−0.25 )
+1.2=0.99
SS=(0.3−0.23 ) (2.4−2.8 )
(0.4−0.30 ) +2.8=2.52
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Response Spectral Analysis
;ased on the data, Response of spectral analysis can be calculated as follo*s -
SMS 8 a x Ss 8 '.5 x 1.54 8 1.$)4$
SM1 8 x S1 8 $.2 x '.% 8 1.22'
S+S 8 $9 x SMS 8 $9 x 1.$)4$ 8 '.444
S+1 8 $9 SM1 8 $9 x 1.22' 8 '.5%
6' 8 '.$ x /S+19S+S0 8 '.$ x /'.5%9'.4440 8 '.$$45
6s 8 S+19S+S 8 '.5% 9 '.444 8 1.122)
rom the result of calculation, response spectral 3adang city *ith soft soil condition can be
represents on figure 1..
Figre !"$"$ Response Spectral -a#ang City .SOFT SOIL/
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Response Spectral Analysis
Response spectral can get from official *ebsite Response Spectral Indonesia
/http-99pus!im.pu.go.id9Apli!asi9desainspe!traindonesia$'1190, On *ebsite needed input name of city
or coordinate of location and soil condition. 6he result of response spectral can directly appear on the
*ebsite.
Example, <ocation 3adang City
6he result *ill be appeared li!e as figure 1..)
Figre !"$"0 E&a'ple Calclation on o1cial 2e3site
Inpt na'e o4
Figre !"$"5 T(e reslt o4 Calclation response spectral 4ro' o1cial 2e3site
S6 7 Roc* SC 7 Dense Soil SD 7 Sti8 soil SE 7So4t
S6 SC SD
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Response Spectral Analysis
6he main cities in Sumatera island are sho*ed by figure 1..% map of Sumatera Island, itBs follo*ing *ith
this list -
1. ;anda Aceh$. Medan
. 3e!an ;aru
2. ambi
). 3alembang
%. 3ang!al 3inang
#. ;eng!ulu
4. ;andar <ampung
5. 3adang1'. ;obo!an
PEKANBARU
MEDAN
B. ACEH
Figre !"$"9 %ap o4 S'atera Islan#
PANGKAL
PINANG
BOBOKAN
BANDAR
LAMPUNG
BENGKULU
PALEMBANG
JAMBI
PADANG
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Response Spectral Analysis
;ased on the calculation from official *ebsite Response Spectral Indonesia, response spectral for main
cities in Sumatera island can be represented by table 1..
6able 1.. Response Spectral +ata Of Sumatera Island
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