Design method of novel plate-barrel gravity anchor

Abstract

The invention discloses a design method of a novel plate-barrel gravity anchor. The method comprises the steps: carrying out the rapid size design based on the grab-weight ratio of an anchor body, and determining the diameter (d) of a core barrel, the depth (h) of the core barrel, the diameter (D) of a plate and the vertical pressure (Vp) preliminarily according to soil body properties (delta, [gamma]s and Dr) and anchoring requirements (including anchoring bearing capacity (F), anchoring safety coefficient (SF) and the weight (W) of the anchor body). By the adoption of the design method, the novel plate-barrel gravity anchor can be rapidly designed and obtained, the novel plate-barrel gravity anchor greatly improves the horizontal bearing capacity and the anti-overturning bearing capacity of an anchoring foundation by combining the barrel penetrating into the soil and the plate on the mud surface and by means of the coupling effect of the barrel and the plate. According to the design method for comprehensively considering the bearing capacity, transportation and installation, the novel plate-barrel gravity anchor only needs to be hoisted and installed in engineering without additional equipment, so the installation cost of the novel plate-barrel gravity anchor is greatly reduced, and the transportation cost is also reduced due to the small size of the novel plate-barrel gravity anchor.

Description

technical field [0001] The invention relates to a gravity foundation, in particular to a design method of a novel plate-barrel gravity anchor. Background technique [0002] Over the past 20 years, offshore wind energy has developed rapidly. Generally speaking, the farther the distance from the shore is, the stronger and more stable the wind will be. Therefore, floating wind turbines are an inevitable choice for the future development of offshore wind turbines in the direction of deep water. At present, floating wind turbines are mostly installed in shallow water areas of 50-100m, so catenary mooring is the main positioning method. In this case, the mooring lines have a large part of the seabed, causing horizontal loads to act on the anchor foundation. [0003] At present, when the water depth exceeds 50 meters, it is very difficult to install anchor piles by piling, and there is no relevant equipment to complete the installation of anchor piles. At present, suction ancho...

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Problems solved by technology

Among these components, the transportation and installation costs account for the majority because of the high cost of transportation and installation of ships

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