Development of Ground Failure Detective Sensor Installing with Strong Ground Motion Accerelometer

强地震动加速度计接地故障检测传感器的研制

• 批准号: 13555129
• 负责人: MIYAJIMA Masakatsu
• 金额: $ 6.98万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555129/
• 关键词: sensor; monitoring; real-time; strong ground motion record; ground failure; 地震記録; 空間分布推定

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.

目前的研究重点是检测由断层运动引起的液化和大地面位移。首先，研究了强地震动记录的振幅特征。根据地面加速度记录计算垂直地面加速度与水平地面加速度之比的时程。接下来，研究了地面加速度记录的频率特性。这里计算了强运动的平均主导周期。然后利用2001年艺叶地震、2003年三陆南地震、2003年宫城县北部地震、2003年十胜冲地震等一百多个地表加速度记录对这些指标进行了验证。采用加速度积分作为检测断层运动引起的大地面位移的新指标。 1999年台湾集集地震的记录验证了这一新指标。因此，新的指数使用从断层破裂后几公里内的强地面运动记录中获得的速度波形来识别由断层运动引起的大地面位移的发生。

项目成果

Masakatsu MIYAJIMA: "Detection of Ground Failure by Using Strong Ground Motion Records"Proc.of 13WCEE. (印刷中). (2004)

Masakatsu MIYAJIMA：“使用强地面运动记录检测地面故障”Proc.of 13WCEE（印刷中）。

Masakatsu Miyajima: "Performance of Buried Lifeline near Fault Rupture During Earthquake"International Workshop on the North Anatorian, East Anatorian and Dead Sea Fault Systems. 51 (2003)

Masakatsu Miyajima：“地震期间断层破裂附近埋藏生命线的性能”北安纳托利亚、东安纳托利亚和死海断层系统国际研讨会。

宮島昌克: "2000年鳥取県西部地震における強震記録を用いた液状化検知"第36回地盤工学研究発表会発表講演集. 33-40 (2001)

Masakatsu Miyajima：“利用 2000 年鸟取县西部地震期间的强运动记录进行液化检测”第 36 届岩土工程研究会议论文集 33-40 (2001)。

Miyajima, M, Hashimoto, T., Kitaura, M.: "Study of Building Damage near Fault Rupture-Case Study of the 1999 Chi-Chi Earthquake in Taiwan-"Journal of Safety Society Science, (in Japanese). No.3. 59-64 (2001)

Miyajima, M, Hashimoto, T., Kitaura, M.：“断层破裂附近的建筑物损坏研究 - 1999 年台湾 Chi-Chi 地震的案例研究 -”安全社会科学杂志，（日文）。

MIYAJIMA, Masakatsu: "Ground Deformation and Questionnaire Survey for Witnesses of Liquefaction During the 2000 Tottori-ken Seibu Earthquake"Proc. of 8^<th> US-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities and Countermeasures Agains

宫岛正胜：“2000年鸟取县西武地震期间地面变形和液化目击者问卷调查”Proc.