Prediction of Earthquake Damage to Buried Lifeline across Fault Rupture and Its Countermeasures

断层破裂埋地生命线震害预测及对策

• 批准号: 13680542
• 负责人: MIYAJIMA Masakatsu
• 金额: $ 2.56万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13680542/
• 关键词: Lifeline; Earthquake Damage; Fault; Buried Pipeline; 性能設計

The study deals with large ground displacements induced by fault movements and its effects on pipe damage near surface fault rupture. A vertical ground displacement induced by fault movement appeared at a surface ground extensively in the 1999 Chi-Chi Earthquake in Taiwan. Its stretch was about 80km and the maximum vertical ground displacement was about 10m. Buried pipelines across the scarp suffered severe damage in the vicinity. According to our field survey, the affected area was limited in the hard surface ground condition although the vertical displacement was great. On the contrary, the vertical displacement was small but the affected area was relatively large in the soft ground condition.The experiments using a shear soil box and table lift were conducted concerning with the affected area and its effects on pipe behavior. A PVC pipe was used in the experiments. The test results showed that great bending stress was occurred at the pipe buried in hanging-wall side under hard surface ground condition. The pipe buried in footwall side indicated the possibility of pull out damage. On the contrary, the bending stress of a buried pipe was dispersed under soft surface ground condition.A preliminary analysis using the DEM was conducted to verify the test results. The results of analysis showed good agreement with our test results qualitatively, however, a quantitative study was necessary in the future.

该研究涉及故障运动引起的大型地面位移及其对表面断裂破裂附近管道损伤的影响。在1999年台湾Chi-Chi地震中广泛地出现了由断层运动引起的垂直地面位移。它的拉伸约为80公里，最大垂直地面位移约为10m。在附近，坡道上埋葬的管道遭受了严重破坏。根据我们的现场调查，尽管垂直位移很大，但在硬地面地面条件下受影响的区域受到限制。相反，垂直位移很小，但在柔软的地面条件下受影响的区域相对较大。使用剪切土壤盒和桌子升起进行了有关受影响区域及其对管道行为的影响的实验。实验中使用了PVC管。测试结果表明，在硬地面地面条件下，埋在壁壁一侧的管道上发生了巨大的弯曲应力。埋在脚壁一侧的管道表明可能会拔出损坏。相反，在柔软的表面地面条件下分散了埋入管道的弯曲应力。进行了DEM进行初步分析以验证测试结果。分析结果表明，与我们的测试结果良好一致，但是，将来需要进行定量研究。

项目成果

吉藤祐也: "断層変位に伴う地中埋設管の挙動に関する模型実験"土木学会中部支部平成14年度研究発表会講演概要集. 323-324 (2003)

Yuya Yoshifuji：“与断层位移相关的地下管道行为模型实验”2002 年研究报告摘要，日本土木工程师学会中部分会 323-324 (2003)。

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

Miyajima, M.、Hashimoto, T. 和 Kitaura, M.：“断层破裂附近的建筑物损坏研究 - 1999 年台湾集集地震案例研究 -”社会安全科学杂志。

Miyajima, M. and Kitaura M.: "Real-time Liquefaction Detection by Using Strong Ground Motion Records"Proc. Of ANCER2002. (in press). (2002)

Miyajima, M. 和 Kitaura M.：“使用强地面运动记录进行实时液化检测”Proc。

Murata, A., Kitaura, M. and Miyajima, M.: "Prediction of Damage to the Structures Through Fatigue Response Spectra Considering the Number of Earthquake Response Cycles"Proc. Of the 11^<th> Japan Earthquake Engineering Symposium. 2277-2282 (2002)

Murata, A.、Kitaura, M. 和 Miyajima, M.：“考虑地震响应周期数，通过疲劳响应谱预测结构损坏”Proc。

Miyajima, M., Yoshida, M. and Kitaura, M.: "Ground Deformation and Questionnaire Survey For Witnesses of Liquefaction During the 2000 Tottori-ken Seibu Earthquake"Proc. Of the 8^<th> US-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities

宫岛，M.，吉田，M.和北浦，M.：“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。