The Evaluation of the Seismic Risk and Alarm System for Military Camps

• Main Authors: Shoei-Shenq Lin, 林水盛
• Other Authors: Ding-Shing Cheng
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/92349985920922835299

碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 90 === The objectives of this study is to evaluate the seismic risk and alarm system for military camps which have strong motion station provided by central weather bureau. For the probability of the annual occurrence of earthquake, the Poisson process was assumed, and the Gutenberg-Richer empirical formula was used for two stages. One stage is magnitude 4.5 to 5.5 which years from 1973 to 2000, and the other stage is for magnitude 5.5 to 6.5 which years from 1900 to 2000. For the probability of the occurrence of annual biggest earthquakes, the Gumbel extreme value statistics was used. The results showed that the Hwa-Lian camp is hightest, and the Qing-quan gang, Xin-she, Jing-wei and Shui-nan camps are next. But, for probability of the occurrence of the annual biggest earthquakes, the Da-chi has larger probability then the previous four camps. For probability of the occurrence of shallow earthquake, Da-chi and Lin-yuan are 0.25, and other camps are above 0.68. For the attenuation of peak ground acceleration, the data from the 921 earthquake was used, except the record has ground attenuation duration greater then 22 seconds. In the alarm system that used 921 earthquake data and each camp’s design acceleration. Thus, 30gal was recommended for both Shin-lin and Lin-yuan camp and 50gal for all others for the 3 second early warning time of alarm system start value