Civil Engineering Association - The Ground Motion of Earthquakes

The Ground Motion of Earthquake

This file contains four ground motion of earthquake:
- El Centro 1940

- Loma Prieta 1989:
PEER NGA STRONG MOTION DATABASE RECORD
LOMA PRIETA 10/18/89 00:05, CORRALITOS, 090 (CDMG STATION 57007)
ACCELERATION TIME HISTORY IN UNITS OF G
7989 0.0050 NPTS, DT

- Parkfield 1966:
PEER NGA STRONG MOTION DATABASE RECORD
PARKFIELD 06/28/66 04:26, CHOLAME #2, 065 (CDMG STATION 1013)
ACCELERATION TIME HISTORY IN UNITS OF G
4369 0.0100 NPTS, DT

- San Fernando 1971:
PEER NGA STRONG MOTION DATABASE RECORD
SAN FERNANDO 02/09/71 14:00, PACOIMA DAM, 164 (CDMG STATION 279)
ACCELERATION TIME HISTORY IN UNITS OF G
4164 0.0100 NPTS, DT

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Dear JUANCM
Please teach me how to set Time history function & Time history case in Etabs based on your file:
El Centro 1940
Loma Prieta 1989
Parkfield 1966
San Fernando 1971
Thx

See this post #19 with SAP2000 (same with Etabs)

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Dear miquan
File from JUANCM:
El Centro 1940 ---> when file opened in notepad having 8 column of data
San Fernando 1971 ---> when file opened in notepad having 5 column of data
From your post TH with 10 column of data, can I summary for Juan file:

*) for Elcentro : I copy some of its data
PEER NGA STRONG MOTION DATABASE RECORD
PARKFIELD 05/18/40 , Valle, NS (CDMG STATION 1013)
ACCELERATION TIME HISTORY IN UNITS OF G
4369 0.0200 NPTS, DT
0.00630 0.00364 0.00099 0.00428 0.00758 0.01087 0.00682 0.00277
Input Time history in etabs
--> point perline = 8
--> value at equal interval = 0.02
--> use free format
What is meaning 4369 above ?
DO MY INPUT CORRECT IN ETABS ?

*) FOR San fernando : I copy some of its data
PEER NGA STRONG MOTION DATABASE RECORD
SAN FERNANDO 02/09/71 14:00, PACOIMA DAM, 164 (CDMG STATION 279)
ACCELERATION TIME HISTORY IN UNITS OF G
4164 0.0100 NPTS, DT
0.305422E-03 0.444806E-03 0.680438E-03 0.761411E-03 0.812106E-03
Input Time history in etabs
--> point perline = 5
--> value at equal interval = 0.01
--> use free format
Waht the meaning of 4164 above ?
DO MY INPUT CORRECT IN ETABS ?

Can you share Time history of Northridge 1994 ?

Thx for your quick response

They're correct. Visit this website for accelerograms

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And bowse your earthquake. Download data for your purpose.

Dear miquan
Does all data from PEER can instantly be used in ETABS ?
Thx

Dear budis,

All records contains recorded values for accelerations at equal intervals. You can use any of the files in SAP/Etabs. Examine each file in notepad/wordpad to see how much lines you should skip, what time interval was used and how many points are on one line.