Behaviour of buried pipelines subjected to ground movements

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一种可行且经济的方法。然而，管道经常暴露在各种地质灾害中，包括地震、山体滑坡、断层运动和其他来源引起的不均匀地面运动。为了保证管道的安全，必须对暴露在危险中的管道进行性能评估。申请人的研究重点是利用实验和数值方法评估埋地管道在地质灾害中的性能，以开发管道的设计方法。利用大型静力试验观测了管道和土体在地面移动过程中的响应，并利用有限元模型对观测到的行为进行了预测。日本的合作者是减少包括管道在内的民用基础设施地震灾害风险的专家。他们使用埋地管道的全尺寸动态测试来研究管道在地震地面运动下的响应，并使用离散单元建模技术来探索土壤-管道界面的行为。加拿大缺乏地震对管道造成影响的专业知识。拟议的项目将带来合作者的专业知识，以补充申请者的专业知识，并加强他在加拿大的研究计划。申请者和合作者将在拟议的合作项目中交流他们的经验、专业知识和想法，并启动一项新的国际研究合作。将首先制定一项详细的计划，利用合作者的设施对地下管道进行实验和数值研究。这些实验将在神户大学的设施中进行。数值分析将在京都大学灾害预防研究所使用离散单元法、有限元方法和扩展有限元方法进行。根据实验和数值工作的结果，将为联盟国际合作赠款申请开发一个新的研究项目。

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.