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.

该研究涉及断层运动引起的大地面位移及其对地表断层破裂附近管道损坏的影响。 1999年台湾集集地震中，地表广泛出现了由断层运动引起的垂直地面位移。其长度约80km，最大垂直地面位移约10m。附近陡坡上的埋地管道遭受严重破坏。根据我们的实地调查，虽然竖向位移较大，但由于地表坚硬，影响范围有限。反之，在软土地基条件下，竖向位移较小，但影响范围较大。利用剪力土箱和升降台进行试验，研究影响范围及其对管道性能的影响。实验中使用了PVC管。试验结果表明，在硬地表条件下，上盘侧埋地管道会产生较大的弯曲应力。埋在下盘一侧的管道表明存在拔出损坏的可能性。相反，在松软地表条件下，埋地管道的弯曲应力被分散。利用DEM进行了初步分析，验证了试验结果。分析结果与我们的定性测试结果非常吻合，但是，未来有必要进行定量研究。

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)。

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. 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。

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., 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。