Offshore high-rise pile cap fan foundation and construction method

A technology of typhoons and high piles, applied in infrastructure engineering, construction, etc., can solve the problems of short effective construction time, high construction cost, and difficult construction, and achieve the effect of saving offshore operation time and ensuring quality

Pending Publication Date: 2018-11-06
POWERCHINA ZHONGNAN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Engineering experience shows that the traditional cast-in-place offshore high-pile cap fan foundation has a long construction period, and because

Method used

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  • Offshore high-rise pile cap fan foundation and construction method
  • Offshore high-rise pile cap fan foundation and construction method
  • Offshore high-rise pile cap fan foundation and construction method

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] see Figure 1-3 , a high pile cap fan foundation, which includes a concrete cap 1 and a steel pipe pile (2) for supporting the concrete cap, the concrete cap 1 and the steel pipe pile 2 are connected by a steel pipe 3 The concrete cap 1 is a prefabricated component, the top end of the connecting steel pipe 3 is located inside the concrete cap 1, the bottom end of the connecting steel pipe 3 is located inside the top end of the steel pipe pile 2, and the The connecting steel pipe 3 and the steel pipe pile 2 are connected by grouting. The embedded anchor bolt 8 in the concrete cap 1 is used to connect the fan tower 9; the lower end of the steel pipe pile 2 is located below the mud surface, and the upper end is usually higher than the mean sea level (water surface).

[0032] The number of the steel pipe piles 2 is greater than or equal to 3, and all the...

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Abstract

The invention discloses an offshore grouting connection high-rise pile cap fan foundation. The offshore grouting connection high-rise pile cap fan foundation comprises a concrete pile cap and steel tube piles for supporting the concrete pile cap, wherein the concrete pile cap and the steel tube piles are connected through connecting steel tubes; the concrete pile cap is a precast member; upper segments of the connecting steel tubes are located in the concrete pile cap; lower segments of the connecting steel tubes are located in the top ends of the steel tube piles; and the connecting steel tubes and the steel tube piles are connected through grouting. The invention further provides a construction method of the offshore fan foundation. Offshore reinforcement assembling and concrete pouringconstructions are transferred to land, so that not only is lots of offshore operation time saved, but also multi-surface spreading in precasting of the concrete pile cap onshore can be realized. Multiple pile caps perform pouring simultaneously to ensure compact proceeding of the construction taking offshore operation as a critical path. Besides, onshore pouring and maintenance of the concrete pile cap are in favor of guaranteeing the quality of a reinforced concrete structure, achieving multiple purposes.

Description

technical field [0001] The invention relates to an offshore high pile cap fan foundation and a construction method thereof, in particular to a water grouting connection type high pile cap fan foundation, which belongs to the technical field of offshore wind power foundations. Background technique [0002] In the field of offshore wind farm foundation design, the high pile cap is a type of wind turbine foundation used in offshore wind farms. This type of foundation is mainly composed of steel pipe piles and concrete caps. During construction, there is no need for cofferdams, and piling ships are usually used to sink piles, and then the construction platform is erected on the sea surface with the help of steel pipe piles that have been driven, and the reinforced concrete cap is poured on site, and the cap is located above the water surface. Generally speaking, this type of fan foundation has high requirements for construction equipment, and the construction process of concret...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D27/14
CPCE02D27/14E02D27/425
Inventor 张晓明曾启东刘功鹏钟耀黄春芳
Owner POWERCHINA ZHONGNAN ENG
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