Experimental study of pullout capacity of plate anchors shallowly embedded in hydrate bearing sediments

doi:10.1016/j.oceaneng.2019.01.014

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Experimental study of pullout capacity of plate anchors shallowly embedded in hydrate bearing sediments
	Liu F ; Sun HY ; Jung JW ; Zhang XH(张旭辉); Ju X
刊名	OCEAN ENGINEERING
	2019-02-01
卷号	173 页码:548-555
关键词	Pullout capacity Plate anchor Gas hydrate Physical model test Floating offshore platform
ISSN号	0029-8018
DOI	10.1016/j.oceaneng.2019.01.014
英文摘要	Plate anchors are commonly used in mooring systems of offshore facilities for gas and oil production in deep and ultra-deep water. They may encounter hydrate-bearing sediments widespread in marine continental margins. The pullout capacity of square anchors embedded shallowly in a hydrate-bearing sand is investigated with small-scale model tests using tetrahydrofuran (THF) hydrate as the substitute of gas hydrate. The results show that the pullout capacity of the anchors increases with the increase of the anchor width and the burial depth. The pullout capacity of the anchors can be estimated by a dimensionless breakout factor. This factor increases with the increase of the burial depth ratio (defined as the ratio of the burial depth to the width of a plate anchor Hydrate dissociation brings detrimental effects on the pullout capacity of the anchors. The pullout capacity of the anchors drops to 0.3% of the initial value after the hydrates dissociate. This pronounced reduction highlights the need for further investigation on the effect of oceanic hydrate dissociation on engineering performance of offshore facilities as a result of natural or anthropologic perturbation.
分类号	一类
WOS关键词	LOWER-BOUND SOLUTIONS ; UPLIFT CAPACITY ; BONDED ANCHORS ; STRIP ANCHORS ; BEHAVIOR ; DEFORMATION ; STABILITY ; CLAY
WOS研究方向	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
语种	英语
WOS记录号	WOS:000460709700041
资助机构	National Nature Science Foundation of China [41572267, 51639008, 51239010] ; Fundamental Research Funds for the Central Universities
其他责任者	Liu, F
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78449]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.{Liu, Fang} Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai, Peoples R China 2.{Liu, Fang} Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai, Peoples R China 3.{Sun, Haoyu、Ju, Xin} Tongji Univ, Dept Geotech Engn, Shanghai, Peoples R China 4.{Jung, Jongwon} Chungbuk Natl Univ, Sch Civil Engn, Cheongju, South Korea 5.{Zhang, Xuhui} Chinese Acad Sci, Inst Mech, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu F,Sun HY,Jung JW,et al. Experimental study of pullout capacity of plate anchors shallowly embedded in hydrate bearing sediments[J]. OCEAN ENGINEERING,2019,173:548-555.
APA	Liu F,Sun HY,Jung JW,张旭辉,&Ju X.(2019).Experimental study of pullout capacity of plate anchors shallowly embedded in hydrate bearing sediments.OCEAN ENGINEERING,173,548-555.
MLA	Liu F,et al."Experimental study of pullout capacity of plate anchors shallowly embedded in hydrate bearing sediments".OCEAN ENGINEERING 173(2019):548-555.