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Proceedings of the International Conference on -, 07
Advances and New Challenges in Earthquake
Engineering Research, Hong Kong Volume
STRONG MOTION DATABASE AND ANALYSIS METHOD IN
MAINLAND CHINA
Haiying YU
(Institute of Engineering Mechanics, China Seismological Bureau,
Phone:4-86-45l-6652604,Fax:-h86-451-6664755, Email:yhy6670420@mail.china.com)
ABSTRACT
Strong motion records in China have been analyzed and processed using routine processing
methods and edited by uniform format. Strong motion database and a set of computer software
used for routine processing of strong motion records have been established, and 3255
accelerograms obtained during 1968-2001 have been collected in the database. Based on the
analysis of low frequency errors in acceelerograms recorded by digital accelerographs, a
correction method is proposed. The results show that the method can be used for data processing
of accelerograms of a variety of digital strong motion accelerographs, and it is possible to
acquire the reliable long-period information of strong ground motion up to about 10 seconds.
Finally, The accelerograms obtained in SMART-1 array of Taiwan are processed and the
features of long-period response spectra are analyzed.
Keywords: strong motion database, low frequency error correction, long period response spectra
1. STRONG MOTION DATABASE IN MAINLAND CHINA
The first experimental strong motion observation station in Mainland China was established at
the Xinfengjiang reservoir dam by IEM in 1962. Up to 2000, 283 strong motion stations or
arrays with 366 accelerographs have been deployed in the main seismic areas of Mainland China.
After 1966 Xingtai Earthquake, IEM deployed some mobile strong motion stations. Since then,
mobile strong motion observations are executed 71 times with 335 accelerographs in Mainland
China. 3255 valuable accelerograms have been accumulated in China during 1968-2001, in
which, 206 accelerograms with the peak value larger than 100 gal, 59 accelerograms larger than
200 gal (Figure 1); the maximum horizontal peak ground acceleration is 541.7 gal, and the