| Project/Area Number |
13555129
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
構造工学・地震工学
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| Research Institution | Kanazawa University |
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Principal Investigator |
MIYAJIMA Masakatsu Kanazawa Univ., Faculty of Engineering, Professor, 工学部, 教授 (70143881)
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| Co-Investigator(Kenkyū-buntansha) |
MURATA Akira Kanazawa Univ., Faculty of Engineering, Research Associate, 工学部, 助手 (30283097)
IKEMOTO Toshikazu Kanazawa Univ., Faculty of Engineering, Research Associate, 工学部, 助手 (60311677)
KITAURA Masaru Kanazawa Univ., Faculty of Engineering, Professor, 工学部, 教授 (70026269)
SHIMIZU Yoshihisa Tokyo Gas Co.Ltd., Vice Director of Dipartment, 副部長(研究職)
YOSHIDA Masaho Fukui National College of Technology, Dept.of Civil Engineering, Associate Professor, 助教授 (90210723)
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| Project Period (FY) |
2001 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥10,900,000 (Direct Cost: ¥10,900,000)
Fiscal Year 2003: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2002: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2001: ¥5,500,000 (Direct Cost: ¥5,500,000)
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| Keywords | sensor / monitoring / real-time / strong ground motion record / ground failure / 地震記録 / 空間分布推定 |
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| Research Abstract |
The present study is focusing on detection of liquefaction and large ground displacement induced by fault movement. First, amplitude characteristics of strong ground motion records were investigated. Time histories of ratio of vertical ground acceleration to the horizontal one was calculated from ground acceleration records at ground surface. Next, frequency characteristics of the ground acceleration records were studied. The average predominant period of the strong motion was calculated here. Then these indices were verified by using more than one hundred acceleration records at ground surface including the 2001 Geiyo, the 2003 Sanriku-minami, the 2003 Miyagiken-hokubu and the 2003 Tokachi-oki Earthquakes in Japan.
The velocity of strong ground motion obtained by integration of acceleration is used for a new index to detect a large ground displacement induced by fault movement. The records of the 1999 Chi-Chi earthquake, Taiwan, verify this new index. As a result, the new index using the velocity wave form obtained from strong ground motion records within few kilometers from fault rupture identifies occurrence of a large ground displacement induced by fault movement.
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