Numerical investigations on pore-pressure response of suction anchors under cyclic tensile loadings
Numerical investigations on pore-pressure response of suction anchors under cyclic tensile loadings
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循环拉伸荷载作用下吸力锚杆孔隙压力响应的数值研究
DOI：
10.1016/j.enggeo.2016.12.001
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发表时间：
2017-09
影响因子：
7.4
通讯作者：
Dong-sheng Jeng
中科院分区：
文献类型：
--
作者：
Kanmin Shen;Lizhong Wang;Zhen Guo;Dong-sheng Jeng
The suction anchor is an effective option for the anchor foundations of floating offshore wind turbines (FOWTs). During its long-term service, in addition to the static pretension load, the suction anchor is subjected to a series of cyclic loads that are caused by waves, currents and the continuous motions of the floating structure. Thus, excess pore-pressure will accumulate within the soil around the embedded anchor, and the anchor capacity tends to be reduced. In this paper, by introducing the oscillatory and residual mechanisms, a novel numerical model is proposed to predict the instantaneous variations and accumulations of excess pore-pressures around a suction anchor that is subjected to long-term vertical cyclic loads. The results indicate that excess pore-pressure builds up mainly in the shallow soil near the external anchor wall. As a consequence, the effective soil stress in this region decreases along with the interface friction between the external wall and the soil. Detailed parametric studies reveal that the accumulation of excess pore-pressure is obvious for a larger load magnitude and smaller load period. With a lower permeability, smaller shear modulus or smaller relative density of the seabed soil, the pore-pressure accumulation outside the anchor increases significantly.
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影响因子：
3.7
作者：
K. Zen;H. Yamazaki
通讯作者：
K. Zen;H. Yamazaki
DOI：
10.4043/14259-ms
发表时间：
2002
期刊：
--
影响因子：
--
作者：
B. Ronalds
通讯作者：
B. Ronalds
DOI：
10.1016/0148-9062(76)91073-1
发表时间：
1976-09
影响因子：
3.9
作者：
P. D. Alba;C. K. Chan;H. Seed
通讯作者：
P. D. Alba;C. K. Chan;H. Seed
DOI：
10.1061/(asce)ww.1943-5460.0000282
发表时间：
2015-05
期刊：
Journal of Waterway Port Coastal and Ocean Engineering-asce
影响因子：
--
作者：
D. Jeng;Hongyi Zhao
通讯作者：
D. Jeng;Hongyi Zhao
DOI：
10.1680/ogepap.36413
发表时间：
2009
期刊：
--
影响因子：
--
作者：
E. Dean
通讯作者：
E. Dean