【作者】 张建红； 鲁晓兵；

【Author】 ZHANG Jian-hong, LU Xiao-bin (Tsinghua University, Beijing 100084,China; Institute of Mechanics, China Academy of Science,Beijing 100080,China)

【机构】 清华大学； 中国科学院力学研究所；

【摘要】 吸力式基础从20世纪70年代开始应用于港口、防波堤和海岸灯塔等的建设上,从1994年开始被用于海洋平台基础。这种基础形式同样应用于我国渤海油田开发中。渤海湾每年冬季有三个月的冰期,海冰不仅使平台受到很大的水平静压力,而且海冰破碎撞击平台会引起平台结构强烈的振动。已测定的平台结构的振动频率是0．8Hz-1．0Hz。为了模拟在这种水平动载荷作用下基础的承载特性,清华大学开展了离心模型试验研究。本文介绍了动冰载荷作用下吸力式基础离心模型试验的结果,并进行了相应分析。更多还原

【Abstract】 Application of suction foundation was initiated in 1970s, mainly in docks, breakwaters, etc. This foundation was first used for platform in 1994 in North Sea. Currently, suction bucket foundations are widely used in the offshore platform for the exploitation of the offshore petroleum and natural gas resources in the Bohai Bay of China. During winter season, ice sheets formed in Bohai Bay will impose strong impact and result in strong vibration on the platform. The measured frequency of the structural vibration of the platforms is 0.8Hz~1.0 Hz. This paper describes a dynamic loading device developed on the geotechnical centrifuge at Tsinghua University and its application in modeling suction bucket foundation under the equivalent ice-induced vibration loadings.更多还原