Behaviour of buried pipelines subjected to ground movements

埋地管道受地面运动影响的行为

• 批准号: 571134-2021
• 负责人: Dhar, Ashutosh
• 金额: $ 1.82万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=729040
• 关键词: Behaviour; buried; pipelines; subjected; ground

Buried pipes are a viable and economical means of transporting liquids and gases such as clean water, sewage, oil, and natural gas. However, the pipelines are often exposed to various geohazards, including differential ground movements resulting from earthquakes, landslides, fault movements, and other sources. It is essential to assess the performance of the pipelines exposed to the hazards to ensure pipeline safety. The applicant's research focuses on assessing the performance of buried pipelines subjected to geohazard using experimental and numerical methods for developing a design method for the pipes. Large-scale static tests are used to observe the pipe and soil responses during ground movements, and finite element models are used to predict the observed behaviors. The collaborators in Japan are experts on the earthquake disaster risk reduction of civil infrastructure, including pipelines. They employ full-scale dynamic testing of buried pipes to investigate the pipe responses under seismic ground movement and discrete element modeling techniques to explore the behavior of the soil-pipe interface. The expertise on earthquake-induced effects on the pipelines is lacking in Canada. The proposed project will bring the expertise of the collaborators to complement the applicant's expertise and strengthen his research program in Canada. The applicant and the collaborators will exchange their experience, expertise, and ideas in the proposed collaborative project and initiate a new international research collaboration. A detailed plan will be first developed to carry out an experimental and numerical study of buried pipes using the facilities of the collaborators. The experiments will be conducted using the facility at Kobe University. The numerical analysis will be carried out using the discrete element method, finite element method, and the extended finite element method at the Institute for Disaster Prevention, Kyoto University. Based on the findings from the experimental and numerical works, a new research project will be developed for the Alliance International Collaboration grants application.

埋地管道是输送清洁水、污水、石油和天然气等液体和气体的可行且经济的方式。然而，管道经常面临各种地质灾害，包括地震、山体滑坡、断层运动和其他来源引起的地面差异运动。评估暴露于危险中的管道的性能对于确保管道安全至关重要。申请人的研究重点是使用实验和数值方法来评估遭受地质灾害的埋地管道的性能，以开发管道的设计方法。大规模静态试验用于观察地面运动期间管道和土壤的响应，有限元模型用于预测观察到的行为。日本的合作者是减少管道等民用基础设施地震灾害风险方面的专家。他们采用埋地管道的全尺寸动态测试来研究地震地面运动下的管道响应，并采用离散元建模技术来探索土管界面的行为。加拿大缺乏地震对管道影响的专业知识。拟议的项目将带来合作者的专业知识，以补充申请人的专业知识并加强他在加拿大的研究计划。申请人和合作者将在拟议的合作项目中交流经验、专业知识和想法，并启动新的国际研究合作。首先将制定详细计划，利用合作者的设施对埋地管道进行实验和数值研究。实验将使用神户大学的设施进行。数值分析将在京都大学防灾研究所使用离散元法、有限元法和扩展有限元法进行。根据实验和数值工作的结果，将为联盟国际合作资助申请开发一个新的研究项目。