阿拉斯加大学安克雷奇分校杨朝晖教授应邀为我院师生作“Casing String Subsidence in Permafrost: Mechanisms and Effectiveness of Countermeasures”学术报告
6月7日下午，阿拉斯加大学安克雷奇分校杨朝晖教授应邀来到我院，在明志楼A413为师生们带来了一场题为“Casing String Subsidence in Permafrost: Mechanisms and Effectiveness of Countermeasures”的精彩学术报告。本次报告由我院副院长万旭升教授主持，吸引了众多青年教师和研究生的参与。
报告伊始，杨朝晖教授介绍了阿拉斯加北坡化石能源开采过程中的套管下沉问题，深入阐述了多年冻土融化沉降的机理与土中套管荷载特性以及冻土融化过程中的力学性质变化。为预测套管沉降，杨教授团队采用三维弹塑性套管模型，系统分析了多年冻土融化沉降时周边土体与套管的应力分布特征。在此基础上，杨教授提出了缓解多年冻土融化导致套管损伤的防治措施并讨论了实际效果。此外，杨教授强调未来可以从钻孔初始缺陷、连接等方面分析套管柱性能，并评估防治措施的有效性。
讲座尾声，与会师生与杨教授展开了深入交流与探讨，现场学术氛围浓厚，思维碰撞不断。此次报告不仅为我院师生搭建了一座通往学术前沿的桥梁，更促成了宝贵的思想交汇，为未来科研合作埋下契机。最终，学术报告在全体师生的热烈掌声中圆满落幕，为我院的学术画卷再添浓墨重彩的一笔。
图1 报告现场
图2 交流互动
Dr. Yang joined UAA as an Assistant Professor on May 2003. He is currently a Professor of Civil Engineering and serves as the Chief Editor of the ASCE Journal of Cold Regions Engineering. He is the Chair of the 20th International Conference on Cold Regions Engineering, held in Anchorage, Alaska, from May 13 to 16, 2024. Dr. Yang's expertise is in geotechnical and earthquake engineering and has maintained an active research program with particular interests in cold regions-related topics with finding support from NSE, and other federal and state agencies. He has published more than 90 peer-reviewed journal articles and has been awarded five patents. Findings from his work on seismic design of deep foundations in frozen soil have been adopted by the Bridge Design Manual of AK DOT&PF and other northern states. Dr. Yang is the 2024 winner of the prestigious ASCE Harold R. Peyton Award for his outstanding contributions to cold regions engineering.
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