Seabed-liquidation-preventing pile foundation protection device suitable for delta region

Abstract

The invention discloses a seabed-liquidation-preventing pile foundation protection device suitable for a delta region. The device comprises speed reduction tires, weight tires and a steel wire mesh; the whole protection device surrounds a pile foundation and is divided into an inner annular area and an outer annular area; the speed reduction tires are located on the outer layer and composed of rubber tire bodies, ecological bags, geotechnical cloth and a plastic drainage board; the bottoms of the rubber tire bodies are sealed by the geotechnical cloth, the ecological bags are arranged inside the rubber tire bodies, and the lower portions of the rubber tire bodies are connected with the strip-shaped plastic drainage board to be inserted into a seabed; the weight tires are located on the inner layer and composed of rubber tire bodies, sand and gravel packing, geotechnical cloth and a plastic drainage board; the bottoms of the rubber tire bodies are sealed by the geotechnical cloth, the sand and gavel packing is arranged inside the rubber tire bodies, and the lower portions of the rubber tire bodies are connected with the plastic drainage board to be inserted into the seabed; water-permeable concrete is poured into gaps among the rubber tire bodies; and the upper portion of the whole structure is covered with the steel wire mesh. The device reinforces the seabed through the dual functions of speed reduction and weight applying, can resist ocean currents of different degrees, maintains long-term stability of the pile foundation and has environmental affinity.

Description

technical field [0001] The invention relates to the field of protection devices, in particular to a pile foundation protection device suitable for preventing seabed liquefaction in delta areas. Background technique [0002] Due to the special geographical location of the delta area, structures such as drilling rigs and offshore wind turbines are often built in this area. Although the strength of the seabed in this area is high enough to support the weight of the structures, under the action of strong waves, the seabed will be liquefied and damaged, which directly leads to the overturning of the upper structures, causing heavy losses. Therefore, it is necessary to take necessary prevention and control measures for the seabed liquefaction phenomenon in the delta area. [0003] Studies have shown that the soil layer in the delta region has obvious spatial characteristics. When the surface soil layer of the seabed is relatively dense and has poor water permeability, this layer ...

AI Technical Summary

Problems solved by technology

Although the strength of the seabed in this area is high enough to support the weight of the structures, under the action of strong waves, the seabed will be liquefied and damaged, which directly leads to the overturning of the upper structures, causing heavy losses

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