Construction method for prefabricating offshore wind power implanted socketed pile foundation bottom sealing concrete on land

Abstract

A construction method for onshore prefabricating bottom sealing concrete of an offshore wind power implanted rock-socketed pile foundation comprises the steps of pile body manufacturing, pouring hole and air outlet hole forming, grouting hole forming, primary pouring, secondary pouring, sealing and construction in sequence, and overcomes the defects in an existing offshore wind power implanted pile foundation technology. The problems of low construction efficiency, high requirements on construction ships and construction sea conditions, complex offshore construction links and high offshore construction cost due to the need of underwater pouring of bottom sealing concrete on an implanted pile on the sea in the prior art are solved, and the problems that the bottom sealing concrete is prefabricated on the land, vertical pouring cannot be achieved due to the long pipe pile, and the construction cost is low are solved. However, internal vibration and the like cannot be carried out by flat pouring, so that the land prefabricated bottom sealing concrete is easy to have the problems that the concrete is not compact and a cavity is formed in the concrete.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power foundation construction, and relates to a construction method for onshore prefabricated offshore wind power embedded rock-socketed pile foundation bottom sealing concrete. Background technique [0002] In the construction of offshore wind power facilities, in order to adapt to the geological conditions of different sea areas, various foundation types are required. Among them, implanted rock-socketed foundations to adapt to shallow overburden geology have begun to be used in offshore wind power projects. For the rock-socketed construction technology of implanted piles, the back-sealing concrete of the implanted piles needs to be poured on site. It is more convenient and simple to pour the back-sealing concrete of the implanted piles on the traditional land or shallow water wharf, but for the construction of implanted piles for offshore wind power foundations, on-site Pouring concrete ha...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a construction method of prefabricated offshore wind power implanted rock-socketed pile foundation back cover concrete, which overcomes the need for existing offshore wind power plants. The deficiencies in the pile-in foundation technology solve the problems in the prior art that the bottom-sealing concrete needs to be poured into the pile at sea, the construction efficiency is low, the construction ship and construction sea conditions are high, the offshore construction process is complicated, and the offshore construction cost is high.

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