| Physical modeling of local scour development around a large-diameter monopile in combined waves and current | |
Qi WG(漆文刚) ; Gao FP(高福平); Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
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| Source Publication | COASTAL ENGINEERING
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| 2014-01 | |
| Volume | 83Pages:72-81 |
| ISSN | 0378-3839 |
| Abstract | In most of the previous studies on local scour around pile foundations, wave-induced pore pressure response has not been taken into account. The local-scour and pore-pressure responses around a large-diameter monopile in combined waves and current have been physically modeled with a specially-designed flow-structure-soil interaction flume. In the series of experiments, the time developments of the scour-depth and the pore-pressure in the proximity of the model pile were measured simultaneously. Experimental results indicate that the wave-induced upward seepage under the wave troughs may weaken the buoyant unit weight of the surrounding sand, which brings the sand-bed more susceptible to scouring. The superimposition of the waves on a current has much effect on the time-development of local scour and the resulting equilibrium scour-depth, which is particularly obvious when the sand-bed is in the clear-water regime under the current or waves alone respectively. It is observed that the maximum flow velocity at the boundary layer for the following-current case is larger than that for the opposing-current case, which further results in faster time development of scour depth and greater equilibrium scour depth for the following-current case. |
| Keyword | Monopile Local Scour Pore Pressure Combined Waves And Current |
| Subject Area | 水动力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000328662800008 |
| Funding Organization | National Natural Science Foundation of China [11232012, 10872198]; Major State Basic Research Development Program of China (973 Program) [2014CB046204] |
| Department | LMFS流固土耦合力学(LHO) |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/48087 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Qi WG,Gao FP,Gao, FP . Physical modeling of local scour development around a large-diameter monopile in combined waves and current[J]. COASTAL ENGINEERING,2014,83:72-81. |
| APA | 漆文刚,高福平,&Gao, FP .(2014).Physical modeling of local scour development around a large-diameter monopile in combined waves and current.COASTAL ENGINEERING,83,72-81. |
| MLA | 漆文刚,et al."Physical modeling of local scour development around a large-diameter monopile in combined waves and current".COASTAL ENGINEERING 83(2014):72-81. |
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