response spectral indonesia code of sumatera island

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



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




;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




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




;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/




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




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




;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

response spectral indonesia code of sumatera island

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