Offshore barrel-shaped foundation for automatic liquefaction prevention and construction method thereof

Abstract

The invention discloses an offshore barrel-shaped foundation for automatic liquefaction prevention and a construction method thereof. The offshore barrel-shaped foundation comprises a foundation bodyand an automatic liquefaction preventing system; the offshore barrel-shaped foundation body comprises an outer barrel, a drainage plate, an inner barrel, a split bolt and a drainage plate sealing topcover; the automatic liquefaction preventing system comprises a hole water pressure sensor, a drainage pipe joint, a sensor joint panel, an acquirer, an alarm and a water pump; and when an ultra-static hole water pressure, acquired by the acquirer, in a seabed around the offshore barrel-shaped foundation exceeds a seabed liquefaction prewarning value, the alarm gives out an alarm, the water pump is automatically started for water pumping, the hole water pressure in a seabed soil body around the offshore barrel-shaped foundation is reduced in time, and the seabed liquefaction risk is removed. Asuction cylinder technology is adopted, and the offshore barrel-shaped foundation is mounted without excavation and sinking, and is directly formed in the seabed or a riverbed, so that quick and safeconstruction of the offshore barrel-shaped foundation is realized, and the construction cost and the construction period are saved.

Description

technical field [0001] The invention relates to the technical field of offshore foundations of marine geotechnical engineering, in particular to an offshore bucket foundation for automatic prevention and control of liquefaction and a construction method thereof. Background technique [0002] With my country's strategic deployment of building a powerful marine country and developing marine economy, in order to improve the ability to develop marine resources and accelerate the pace of economic development in marine regions, my country has vigorously promoted coastline protection, harbor construction, important island construction, offshore engineering and offshore engineering, etc. The progress of various marine projects, offshore bucket foundations have played an important role in these projects. [0003] The offshore bucket foundation is often affected by wave load, superstructure vibration, earthquake and other factors in the long-term operation process. The effects of wave ...

AI Technical Summary

Problems solved by technology

But this method has following deficiencies: 1, can not prevent the seabed liquefaction around marine engineering foundation accurately and in time, generally wait for the seabed liquefaction to take this method to carry out seabed liquefaction treatment after the occurrence; 2, this method is not suitable for complex environment In sea or deep sea areas, it is not easy to install drainage pipes and pump water in such areas

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