• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
  • Scopus数据库收录期刊
WANG Teng, YAN Meng. Numerical study on keying of suction embedded plate anchors[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(1): 118-123. DOI: 10.11779/CJGE201601012
Citation: WANG Teng, YAN Meng. Numerical study on keying of suction embedded plate anchors[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(1): 118-123. DOI: 10.11779/CJGE201601012

Numerical study on keying of suction embedded plate anchors

More Information
  • Received Date: January 04, 2015
  • Published Date: January 19, 2016
  • The suction embedded plate anchor (SEPLA) is a new foundation to moor floating structures in deep water. Loss of embedment during keying has a significant effect on the design capacity. The envelope analysis method of plastic limit is adopted to simulate and analyze the embedment loss and the capacity of the keying process of SEPLAs, taking into account of the interactions of anchor chain, soil and plate anchor. The effects of varying padeye offsets and mudline angle of anchor chain on the embedment loss, inclination and capacity of the plate anchor are studied, and they are verified by the data of centrifuge experiments. The results from simulations show that the embedment loss of SEPLA decreases with the increase of padeye location offset towards the bottom of the anchor. The capacity of the plate anchor keeps stable when the eccentricity ratio of ep/en is less than 0.1. When ep/en is greater than 0.1, the bearing capacity of plate anchor significantly decreases. Besides, a better result of the bearing capacity can be yielded under the condition of a smaller mudline angle of the anchor chain with a smaller rotation angle.
  • [1]
    叶邦全. 海洋工程用锚类型及其发展综述[J]. 船舶与海洋工程, 2012, 3: 1-7. (YE Bang-quan. Review of anchor types and development in marine engineering[J]. Naval Architecture and Ocean Engineering, 2012, 3: 1-7. (in Chinese))
    [2]
    SONG Zhen-he. Pullout behavior of suction embedded plate anchors in clay[D]. Perth: Curtin University of Technology, 2008.
    [3]
    DOVE P, TREU H, WILDE B. Suction embedded plate anchor (SEPLA): a new anchoring solution for ultra-deep water mooring [C]// Proceedings of the Deep Offshore Technology Conference. New Orleans, 1998.
    [4]
    WANG D, HU Y, RANDOLPF M F. Three-dimensional large deformation finite-element analysis of plate anchors in uniform clay[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2010, 136(2): 355-365.
    [5]
    WANG D, HU Y, RANDOLPF M F. Keying of rectangular plate anchors in normally consolidated clays[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2011, 137(12): 1244-1253.
    [6]
    TIAN Y, CASSIDY M J, RANDOLF M F, et al. A simple implementation of RITSS and its application in large deformation analysis[J]. Computers and Geotechnics, 2014, 56: 160-167.
    [7]
    TIAN Y, GAUDIN C, CASSIDY M J. Improving plate anchor design with a keying flap[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2014, 140(5): 04014009.
    [8]
    LOWMASS A C. Installation and keying of follower embedded plate anchor[D]. Perth: University of Western Australia, 2006.
    [9]
    AUBENY C P, MURFF J D, Kim B M. Prediction of anchor trajectory during drag embedment in soft clay[J]. International Journal of Offshore and Polar Engineering, 2008, 18(4): 314-319.
    [10]
    AUBENY C P, CHI C. Mechanics of drag embedment anchors in a soft seabed[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2010, 136(1): 57-68.
    [11]
    CASSIDY M J, GAUDIN C, RANDOLPH M F, et al. A plasticity model to assess the keying of plate anchors[J]. Géotechnique, 2012, 62(9): 825-836.
    [12]
    YANG M, AUBENY C P, MUEFF J D. Behavior of suction embedded plate anchors during keying process[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2011, 138(2): 174-183.
    [13]
    SONG Z, HU Y, O'LOUGHLIN C, et al. Loss in anchor embedment during plate anchor keying in clay[J]. Journal of Geotechnical and Geoenvironmental Gngineering, 2009, 135(10): 1475-1485.
    [14]
    TIAN Y, CASSIDY M J, GAUDIN C. The influence of padeye offset on plate anchor re-embedding behaviour[J]. Géotechnique Letters, 2014, 4(1-3): 39-44.
    [15]
    NEUBECKER S R, RANDOLPH M F. Profile and frictional capacity of embedded anchor chains[J]. Journal of Geotechnical Engineering, 1995, 121(11): 797-803.
    [16]
    O'NEILL M P, BRANSBY M F, RANDOLPF M F. Drag anchor fluke soil interaction in clays[J]. Canadian Geotechnical Journal, 2003, 40(1): 78-94.
    [17]
    BRANSBY M F, O'NEILL M P. Drag anchor fluke-soil interaction in clays[C]// Proceeding of the International Symposium on Numerical Models in Geomechanics (NUMOG VII). Graz, 1999: 489-494.
    [18]
    ELKHATIB S, RANDOLPF M F. The effect of interface friction on the performance of drag-in plate anchors[C]// Proceeding of the 5th International Symposium on Frontiers in Offshore Geotechnics. Perth, 2005.
    [19]
    ELKHATIB S. The behaviour of drag-in plate anchors in soft cohesive soils[D]. Perth: University of Western Australia, 2006.

Catalog

    Article views (454) PDF downloads (296) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return