6月7日下午，阿拉斯加大學(xué)安克雷奇分校楊朝暉教授應(yīng)邀來到我院，在明志樓A413為師生們帶來了一場題為“Casing String Subsidence in Permafrost: Mechanisms and Effectiveness of Countermeasures”的精彩學(xué)術(shù)報告。本次報告由我院副院長萬旭升教授主持，吸引了眾多青年教師和研究生的參與。
報告伊始，楊朝暉教授介紹了阿拉斯加北坡化石能源開采過程中的套管下沉問題，深入闡述了多年凍土融化沉降的機理與土中套管荷載特性以及凍土融化過程中的力學(xué)性質(zhì)變化。為預(yù)測套管沉降，楊教授團隊采用三維彈塑性套管模型，系統(tǒng)分析了多年凍土融化沉降時周邊土體與套管的應(yīng)力分布特征。在此基礎(chǔ)上，楊教授提出了緩解多年凍土融化導(dǎo)致套管損傷的防治措施并討論了實際效果。此外，楊教授強調(diào)未來可以從鉆孔初始缺陷、連接等方面分析套管柱性能，并評估防治措施的有效性。
講座尾聲，與會師生與楊教授展開了深入交流與探討，現(xiàn)場學(xué)術(shù)氛圍濃厚，思維碰撞不斷。此次報告不僅為我院師生搭建了一座通往學(xué)術(shù)前沿的橋梁，更促成了寶貴的思想交匯，為未來科研合作埋下契機。最終，學(xué)術(shù)報告在全體師生的熱烈掌聲中圓滿落幕，為我院的學(xué)術(shù)畫卷再添濃墨重彩的一筆。
圖1 報告現(xiàn)場
圖2 交流互動
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.
