Offshore photovoltaic concrete-filled steel tube mixing composite pile foundation structure

Abstract

The utility model relates to an offshore photovoltaic concrete-filled steel tube mixing composite pile foundation structure which comprises a concrete-filled steel tube mixing composite pile and a photovoltaic support, the concrete-filled steel tube mixing composite pile comprises a mixing pile body and a core pile, the core pile comprises a steel tube and a pouring body poured in the steel tube, the mixing pile body is arranged in a silt layer, and the pouring body is arranged in the silt layer. The steel pipe is inserted into the mixing pile body, the top end of the steel pipe extends out of the tidal water surface, and the photovoltaic support is installed on the top of the steel pipe. The utility model has the advantages that: 1) the bearing capacity is large: the large-diameter cement mixing pile is adopted in sludge to provide friction force for the concrete-filled steel tube core pile in the middle, so that the bearing capacity of the foundation is greatly improved, the pile length is reduced, the investment is reduced, and the construction is convenient and the working efficiency is improved due to the reduction of the pile length; the pulling resistance and the overturning resistance are high, and stability is high, the pulling resistance and the overturning resistance are greatly improved due to the fact that the steel pipes are connected with large-diameter cement soil in the sludge, and the stability is high;

Description

Technical Field

[0001] The utility model relates to the technical field of offshore photovoltaic foundations, in particular to an offshore photovoltaic steel pipe concrete mixing composite pile foundation structure. Background Art

[0002] At present, small-diameter precast pile foundations are basically adopted for offshore photovoltaic foundations. Since many tidal flat areas have deep silt layers, the diameter of the precast piles is small, the bearing capacity improved is limited, sometimes the required piles are relatively long, resulting in large investment and difficult construction. Summary of the Invention

[0003] The purpose of the utility model is to provide an offshore photovoltaic steel pipe concrete mixing composite pile foundation structure according to the deficiencies of the above-mentioned prior art. By adopting large-diameter mixing piles, friction is provided for the core piles in the middle, greatly improving the bearing capacity of the foundation. Since the steel pipe concrete core piles are connected with the large-diameter mixing bodies in the foundation, their anti-pulling and anti-overturning capabilities are greatly improved, and the stability is strong.

[0004] The realization of the purpose of the utility model is completed by the following technical solutions:

[0005] An offshore photovoltaic steel pipe concrete mixing composite pile foundation structure, characterized in that: it includes a steel pipe concrete mixing composite pile and a photovoltaic support. The steel pipe concrete mixing composite pile includes a mixing pile body and a core pile. The core pile includes a steel pipe and a perfusion body poured in the steel pipe. The mixing pile body is arranged in the silt layer. The steel pipe is inserted into the mixing pile body and its top extends above the tidal water surface. The photovoltaic support is installed on the top of the steel pipe.

[0006] A photovoltaic panel is installed above the photovoltaic support.

[0007] The perfusion body in the steel pipe is concrete, mortar or cement slurry.

[0008] The advantages of the utility model are:

[0009] 1) Large bearing capacity: By adopting large-diameter cement mixing piles in the silt to provide friction for the steel pipe concrete core piles in the middle, the bearing capacity of the foundation is greatly improved, the pile length is reduced, the investment is reduced, and due to the reduction of the pile length, the construction is also convenient and the work efficiency is improved.

[0010] 2) Strong anti-pulling and anti-overturning capabilities and high stability: Since the steel pipe is connected with the large-diameter cement soil in the silt, its anti-pulling and anti-overturning capabilities are greatly improved, and the stability is strong. Brief Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the utility model;

[0012] Figure 2 Construction process of the utility model Figure Ⅰ ;

[0013] Figure 3 Construction process of the utility model Figure Ⅱ 。 Specific implementation manner

[0014] The features of the utility model and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings for the understanding of those skilled in the same industry:

[0015] As Figures 1-3 shown, the markings 1-10 in the figure respectively represent: mixing pile body 1, steel pipe 2, grouting body 3, photovoltaic support 4, photovoltaic panel 5, power device 6, cement slurry pumping device 7, pile driving boat 8, mixing head 9, concrete boat 10.

[0016] Embodiment: As Figures 1 to 3 shown, the offshore photovoltaic steel pipe concrete mixing composite pile foundation structure in this embodiment includes a steel pipe concrete mixing composite pile and a photovoltaic support 4, wherein the steel pipe concrete mixing composite pile includes a mixing pile body 1 and a core pile. The core pile includes a steel pipe 2 and a grouting body 3 grouted in the steel pipe 2. The mixing pile body 1 is arranged in the silt layer, the steel pipe 2 is inserted into the mixing pile body 1 and its top extends above the tidal water surface. The photovoltaic support 4 is installed on the top of the steel pipe 2, and the photovoltaic panel 5 is installed on the photovoltaic support 4.

[0017] In this embodiment, the mixing pile body 1 adopts a large-diameter mixing pile, which provides friction for the middle core pile and greatly improves the bearing capacity of the foundation. At the same time, since the core pile is connected to the large-diameter mixing pile body in the foundation, its anti-overturning ability has been greatly improved and the stability is strong.

[0018] Combined with Figures 1 to 3 shown, the construction steps in this embodiment are as follows:

[0019] 1) The power device 6 on the pile driving boat 8 drives the steel pipe 2 and the mixing head 9 at its bottom to rotate and sink; while mixing, cement slurry is sprayed from the grouting pipe in the steel pipe 2 to the periphery of the mixing head 9; the mixing head 9 mixes the cement slurry with the surrounding silt to form a large-diameter cement-soil mixing pile.

[0020] 2) After mixing to the designed pile length, concrete, mortar or cement slurry is poured into the steel pipe 2 by the concrete boat to form a steel pipe concrete mixing composite pile foundation.

[0021] 3) After the pile foundation is completed, the photovoltaic support 4 and the photovoltaic panel 5 are installed on the top of the steel pipe concrete mixing composite pile, that is, the part of the steel pipe 2 extending above the tidal water surface.

[0022] Although the above embodiments have described in detail the concept and embodiments of the object of the present utility model with reference to the accompanying drawings, those of ordinary skill in the art can recognize that various improvements and modifications can still be made to the present utility model without departing from the scope defined by the claims, so they will not be elaborated one by one here.

Claims

1. An offshore photovoltaic steel tube concrete mixing composite pile foundation structure, characterized by: It includes a steel tube concrete mixing composite pile and a photovoltaic bracket, wherein the steel tube concrete mixing composite pile includes a mixing pile body and a core pile, the core pile includes a steel pipe and a casting body cast in the steel pipe, wherein the mixing pile body is set in a silt layer, the steel pipe is inserted in the mixing pile body and its top end extends above the tidal surface, and the photovoltaic bracket is installed on the top of the steel pipe.

2. The offshore photovoltaic steel tube concrete mixing composite pile foundation structure according to claim 1, characterized in that: A photovoltaic panel is installed on the photovoltaic support.

3. The offshore photovoltaic steel tube concrete mixing composite pile foundation structure according to claim 1 is characterized by: The filling body in the steel pipe is concrete, mortar or cement paste.

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