IMECH-IR  > 流固耦合系统力学重点实验室
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
Source PublicationOCEAN ENGINEERING
2019-02-01
Volume173Pages:548-555
ISSN0029-8018
AbstractPlate 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.
KeywordPullout capacity Plate anchor Gas hydrate Physical model test Floating offshore platform
DOI10.1016/j.oceaneng.2019.01.014
Indexed BySCI ; EI
Language英语
WOS IDWOS:000460709700041
WOS KeywordLOWER-BOUND SOLUTIONS ; UPLIFT CAPACITY ; BONDED ANCHORS ; STRIP ANCHORS ; BEHAVIOR ; DEFORMATION ; STABILITY ; CLAY
WOS Research AreaEngineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
WOS SubjectEngineering ; Oceanography
Funding OrganizationNational Nature Science Foundation of China [41572267, 51639008, 51239010] ; Fundamental Research Funds for the Central Universities
Classification一类
Ranking4
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78449
Collection流固耦合系统力学重点实验室
Affiliation1.{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
Recommended Citation
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.
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