| As energy crisis is more and more concerned by people, looking for new renewableenergy becomes the hot spot in today's society, wind resources as a kind of renewableclean energy, which is frequently used.In recent years, the world wind energy market isgrowing fast every year.Compared to the wind generator on land, sea wind power has many advantages,such as more rich sea wind resources, easy to use, and save resources of land. But atthe same time, we also found that, the sea wind power also has its own problems, suchas , the sea environment is more severe, construction cost is high, the load is changeda lot, which make the design of our job more difficult.This essay, taking some offshore wind generators, for example, tries to discuss thestability of the sea wind power foundation. The fan of the sea is an foundation of largecylinder of thin-walled, which has good ability of resistance to overthrow and sliding.We use ABAQUS-finite element analysis software, to simulate foundation stabilityunder the complex load conditions of sea, such as, wave load, ice load, wind load andwind machine's vibration load.At the same time, ABAQUS set the frictional contact toconsider the effect from the soil in the cylinder to the foundation, which gets thecorresponding analysis results, and the results show that the offshore wind power baseis still stable under the premise of considering more coupling load.At the same time,the fan's vibration load has caused some influence to the stability of the foundation,but the effect is not big.Because foundation is located in the bottom of the sea, the drainage condition ispoor, the surface of the soil is easily liquefied.which is a serious threat the offshorewind generators security, This paper introduces the conditions,mechanism andinfluence factors of the liquefaction, and by the finite element calculation, analysesfoundation's stability after liquefaction, and tries to give the related suggestions toreduce the liquefaction's adverse effect. |
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