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原文传递 Keying Process of the OmniMax Anchor Shallowly Embedded in Undrained Normally Consolidated Clay

题名：	Keying Process of the OmniMax Anchor Shallowly Embedded in Undrained Normally Consolidated Clay
其他题名：	AFENA[Computer software].Centre for Geotechnical Research,Univ.of Sydney,Sydney,Australia.
正文语种：	英文
作者：	Congcong Han
关键词：	OmniMax anchor;Yield envelope;Keying;Diving;Capacity
摘要：	The OmniMax anchor is an efficient anchoring foundation due to its dynamic installation and diving property. When subjected to pullout loading, the anchor is keyed to a new orientation and position to provide holding capacity. However, the trajectory and capacity mobilization of the OmniMax anchor during its keying are still unclear, especially for anchors with shallow embedment depth. The present study investigated the keying process of the OmniMax anchor by using a plasticity model. The anchor yield envelope was established based on a shallowly embedded OmniMax anchor with a tip embedment depth of 1.5 times the anchor length. A series of parametric studies were subsequently carried out to investigate the effects of the soil strength gradient, the padeye offset and padeye eccentricity, the pullout angle at the mudline, and the chain parameters on anchor trajectory and capacity mobilization. The anchor ultimate embedment depth and, hence, the ultimate capacity in the final keying stage were discussed. To keep efficient diving property and high capacity simultaneously, it is recommended that the padeye offset angle should range from 15° to 25°, and the pullout angle at the mudline should be no more than 30°.
出版年：	2018
论文唯一标识：	P-108Y2018V144N04008
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/(ASCE)WW.1943-5460.0000450
期刊名称：	Journal of Waterway, Port, Coastal, and Ocean Engineering
拼音刊名(出版物代码)：	P-108
卷：	144
期：	04
页码：	88-104