Tie device for preventing ocean structure overturning caused by seabed earthquake liquefaction

Abstract

The invention discloses a tie device for preventing ocean structure overturning caused by seabed earthquake liquefaction, which comprises a plurality of steel cylinders, the steel cylinders are of bottomless cylinder structures, the steel cylinders are arranged around an artificial island, the lower parts of the steel cylinders are embedded into a seabed, and a lower lantern ring is fixedly arranged in the position of the seabed plane in a sleeving manner; a plurality of resistance blades embedded in the seabed are distributed on the periphery of the lower lantern ring, rotating rods penetrating to the position close to the seabed plane are fixed to the upper ends of the resistance blades, a connecting rod is hinged to the end, away from the end connected with the resistance blades, of each rotating rod, and the other end of each connecting rod is hinged to the edge of the lower lantern ring. Compared with the prior art, by means of the mode that the resistance blades embedded into the seabed can bear large torque, the instability of the large-diameter steel cylinder possibly caused by foundation liquefaction in the modes of sinking, sliding, twisting, rotating overturning and the like is counteracted, and the stability of the steel cylinder is kept.

Description

technical field [0001] The invention relates to a knot-trapping device for preventing the subsidence of an ocean structure induced by seabed earthquake liquefaction. Background technique [0002] The submerged large-diameter steel cylinder structure is a thin-walled cylindrical continuous structure without inner partition walls and bottom, filled with sand or gravel, and has strong site adaptability. It is suitable for deep water areas and is gradually being used in domestic and foreign Wharf, breakwater and artificial island wall structure. Since my country's coastal areas are located in the circum-Pacific seismic belt, the potential earthquake risk is very high. Seismic load is the main load controlling the design of marine engineering structures. Strong earthquakes can lead to liquefaction of the seabed soil and make the steel cylinder structure lose its stability. The post-earthquake repair work is extremely difficult. Therefore, the instability of the submerged large-di...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, since the bottom of the large-diameter steel cylinder structure is open, the stability is maintained by its own gravity, internal backfill and surrounding soil, and its structural characteristics determine its high dependence on the stability of the seabed. Therefore, the seabed liquefaction is the main threat to the steel cylinder structure, and the foundation liquefaction may lead to the instability of the large-diameter steel cylinder, which may appear in the form of subsidence, slippage, torsion, rotation and overturning.

Images