A waterproof structure for the concrete cast-in-place pile foundation of a photovoltaic power station support

Abstract

The utility model discloses a waterproof structure of a concrete cast-in-place pile foundation for a photovoltaic power station support, comprising a pile foundation and a concrete cushion layer, wherein a top frame is installed on the top of the pile head, a casting groove is opened on the top of the pile head, a receiving frame is vertically fixedly connected to the bottom end of the top frame, a concrete layer is cast on the inner side of the casting groove, an inner frame with an integrated structure is fixedly connected to the inner side of the top frame, four threaded cylinders are penetrated and installed on the bottom end of the inner frame, a positioning groove is formed by the height difference between the top surface of the inner frame and the top surface of the top frame, a bottom plate is installed in the positioning groove, a support is installed on the middle part of the top end of the bottom plate, and a plurality of screws are penetrated and installed on the top end of the bottom plate, the exposed steel bars of the traditional cast-in-place pile structure are arranged so as not to protrude from the pile foundation to avoid the generation of gaps, and a top frame and other structures are arranged on the top end of the pile foundation as a receiving member for connecting the photovoltaic support, which can not only ensure the sealing effect at the pile head, but also facilitate the maintenance, disassembly and replacement of the photovoltaic support in the later stage.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power stations, in particular to a waterproof structure of a concrete cast-in-place pile foundation of a photovoltaic power station support. Background Art

[0002] The photovoltaic power station support pile foundation is an important part of the photovoltaic power station construction, which is directly related to the stability and power generation efficiency of the photovoltaic power station. According to the search results, the common types of photovoltaic power station support pile foundations include cast-in-place concrete foundations, prefabricated strip foundations, micro reinforced concrete cast-in-place pile foundations, steel anchor pile foundations and pre-drilled anchor pile foundations. Cast-in-place concrete foundation is a traditional foundation type, suitable for various geological conditions and simple construction process;

[0003] However, the exposed steel bars on the existing concrete pile foundation are prone to corrosion. At the same time, the existing concrete pile foundation is inconvenient to connect with the bracket, and most of them are fixed structures, which is not convenient for the maintenance and replacement of the bracket in the later stage.

[0004] Therefore, those skilled in the art provide a photovoltaic power station support concrete cast-in-place pile foundation waterproof structure to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a waterproof structure for a concrete cast-in-place pile foundation of a photovoltaic power station support.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure, comprising a pile foundation and a concrete cushion layer, wherein the concrete cushion layer is laid on the ground, the pile foundation comprises a pile head protruding above the concrete cushion layer and a pile body immersed in the ground at the bottom end of the concrete cushion layer, a top frame is installed at the top of the pile head, a casting groove is opened at the top of the pile head, a receiving frame is vertically fixedly connected to the bottom end of the top frame, and the receiving frame is inserted into the inner side of the casting groove, a concrete layer is cast on the inner side of the casting groove, an inner frame with an integrated structure is fixedly connected to the inner side of the top frame, four threaded barrels distributed in a rectangular array are installed through the bottom end of the inner frame, a positioning groove is formed by the height difference between the top surface of the inner frame and the top surface of the top frame, a bottom plate is installed in the positioning groove, a bracket is installed in the middle of the top end of the bottom plate, a plurality of screws are installed through the top end of the bottom plate, and the bottom ends of the screws are connected to the inner sides of the threaded barrels at corresponding positions, and a sealing rubber is provided between the edge of the bottom plate and the inner wall of the positioning groove.

[0008] Preferably, a steel mesh frame is provided inside the pile body.

[0009] Preferably, a plurality of steel bars are evenly installed on both sides of the inner wall of the receiving frame, a bottom groove is opened at the bottom end of the casting groove, and a casting port is formed by an opening in the middle of the inner frame.

[0010] Preferably, the contact surface between the bottom plate and the sealing rubber is an inclined surface, a groove is provided at the top end of the bottom plate corresponding to the position where the screw passes through, and a sealing ring is sleeved on the top end of the outer side of the screw.

[0011] Preferably, an integral frame is connected to the outer edge of the top frame, and a frame cover is arranged at the outer edge of the pile head, and a water stop is arranged around the surface of the concrete cushion layer and at the connection with the pile foundation.

[0012] Preferably, the top frame and the bottom plate are both made of stainless steel, and the top end of the screw is coated with a corrosion-resistant coating.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The technical solution designed by the utility model avoids the generation of gaps by setting the exposed steel bars of the traditional cast-in-place pile structure so that they do not protrude from the pile foundation, and sets a top frame and other structures on the top of the pile foundation as a receiving part for connecting the photovoltaic bracket, which not only ensures the sealing effect at the pile head, but also facilitates the subsequent maintenance and disassembly and replacement of the photovoltaic bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more specifically and intuitively illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the structure proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the receiving frame proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the inner frame installation structure proposed by the utility model;

[0019] Figure 4 The utility model proposed Figure 1 Enlarged structural diagram at A in the middle.

[0020] In the figure: 101, pile body; 102, pile head; 2, concrete cushion layer; 3, top frame; 31, surrounding frame; 4, casting trough; 5, receiving frame; 6, concrete layer; 7, inner frame; 71, positioning groove; 8, threaded tube; 9, bottom plate; 10, bracket; 11, sealing rubber; 12, screw; 13, steel grid; 14, steel bar; 15, bottom trough; 16, casting port; 17, groove; 18, sealing ring; 19, water stop. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure, including a pile foundation and a concrete cushion layer 2, the concrete cushion layer 2 is laid on the ground, the pile foundation includes a pile head 102 protruding above the concrete cushion layer 2 and a pile body 101 immersed in the ground at the bottom end of the concrete cushion layer 2, a top frame 3 is installed on the top of the pile head 102, a casting groove 4 is opened on the top of the pile head 102, a receiving frame 5 is vertically fixed to the bottom of the top frame 3, and the receiving frame 5 is inserted into the inner side of the casting groove 4, a concrete layer 6 is cast on the inner side of the casting groove 4, and a top frame 3 is fixed on the inner side of the top frame 3. An inner frame 7 of an integral structure is connected, four threaded tubes 8 distributed in a rectangular array are installed through the bottom end of the inner frame 7, a positioning groove 71 is formed by the height difference between the top surface of the inner frame 7 and the top surface of the top frame 3, a bottom plate 9 is installed in the positioning groove 71, a bracket 10 is installed in the middle of the top of the bottom plate 9, a plurality of screws 12 are installed through the top of the bottom plate 9, and the bottom ends of the screws 12 are connected to the inner side of the threaded tube 8 at the corresponding position, a sealing rubber 11 is provided between the edge of the bottom plate 9 and the inner wall of the positioning groove 71, and a steel mesh frame 13 is provided inside the pile body 101;

[0023] The technical scheme adopted above optimizes the installation method of the bracket 10 and the pile head 102 by connecting the pile head 102 with the bottom plate 9 at the bottom end of the bracket 10 through the top frame 3. The bottom plate 9 is installed on the pile head 102 through the screw 12, which can be disassembled and maintained in the later stage, and a corresponding threaded tube 8 is provided for the screw 12 to connect, so as to avoid the problem that the traditional screw 12 is directly fixed in the concrete layer and cannot be disassembled. At the same time, the cooperation between the bottom plate 9 and the top frame 3 seals the top of the pile head 102, which can activate the waterproof effect of the pile head 102. At the same time, the traditional pile foundation design is to extend the inner steel bars out of the top for connecting the corresponding components. The protruding part of the steel bars is prone to gaps, which makes it easy for water to penetrate into the pile foundation and cause erosion. The steel grid 13 inside the pile foundation does not extend out of the pile head 102 in the present scheme, which can maintain the strength of the pile foundation and will not produce gaps on the top surface of the pile head 102. At the same time, in the present application, a sealing rubber 11 is provided around the edge of the bottom plate 9 and the inner wall of the positioning groove 71 to further prevent water from entering.

[0024] A plurality of steel bars 14 are evenly installed on both sides of the inner wall of the receiving frame 5, a bottom groove 15 is opened at the bottom end of the casting groove 4, and a casting opening 16 is formed at the middle of the inner frame 7;

[0025] The technical solution adopted above is to install the top frame 3 on the top of the pile head 102, and pour concrete into the pouring groove 4 through the pouring port 16 in the middle of the inner frame 7 until the surface of the concrete is flush with the pouring port 16, thereby realizing the connection between the top frame 3 and the pile head 102. By arranging multiple steel bars 14 on the inner side of the receiving frame 5, the connection strength can be improved. The bottom groove 15 increases the connection area between the new concrete and the pile head 102.

[0026] The contact surface between the bottom plate 9 and the sealing rubber 11 is an inclined surface. A groove 17 is provided at the top of the bottom plate 9 corresponding to where the screw 12 passes through. A sealing ring 18 is sleeved on the top of the outer side of the screw 12.

[0027] In the technical solution adopted above, the contact surface between the edge of the bottom plate 9 and the sealing rubber 11 is set as an inclined surface, so that the inclined surface can be squeezed when the bottom plate 9 is installed downward to improve the contact tightness. A sealing ring 18 is set between the screw 12 and the bottom plate 9, which can improve the installation sealing of the screw 12 and prevent the screw 12 from being eroded.

[0028] The outer edge of the top frame 3 is connected to a frame 31 of an integral structure, and the frame 31 is covered at the outer edge of the pile head 102, and a water stop strip 19 is provided around the surface of the concrete cushion layer 2 and at the connection with the pile foundation;

[0029] The technical solution adopted above can improve the sealing performance around the top frame 3 and the pile head 102 through the surrounding frame 31, and prevent the gap between the pile foundation and the concrete cushion layer 2 through the water stop strip 19, thereby preventing water from seeping in.

[0030] The top frame 3 and the bottom plate are both made of stainless steel, and the top end of the screw 12 is coated with a corrosion-resistant coating;

[0031] In the technical solution adopted above, the top frame 3 can be made of stainless steel or other hard materials that have been treated with anti-corrosion, and the head of the screw 12 is also coated with a coating or made of stainless steel for anti-corrosion and anti-rust.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure, comprising a pile foundation and a concrete cushion layer (2), characterized in that: The concrete cushion layer (2) is laid on the ground, and the pile foundation comprises a pile head (102) protruding above the concrete cushion layer (2) and a pile body (101) immersed in the ground at the bottom of the concrete cushion layer (2). A top frame (3) is installed at the top of the pile head (102), and a casting groove (4) is opened at the top of the pile head (102). A receiving frame (5) is vertically fixed to the bottom of the top frame (3), and the receiving frame (5) is inserted into the inner side of the casting groove (4). A concrete layer (6) is cast inside the casting groove (4), and an inner frame (6) of an integral structure is fixed to the inner side of the top frame (3). The inner frame (7) has four threaded tubes (8) arranged in a rectangular array, and the top surface of the inner frame (7) and the top surface of the top frame (3) form a positioning groove (71) through a height difference. A bottom plate (9) is installed in the positioning groove (71). A bracket (10) is installed in the middle of the top of the bottom plate (9). A plurality of screw rods (12) are installed through the top of the bottom plate (9), and the bottom ends of the screw rods (12) are connected to the inner side of the threaded tubes (8) at corresponding positions. A sealing rubber (11) is provided between the edge of the bottom plate (9) and the inner wall of the positioning groove (71).

2. A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure according to claim 1, characterized in that: A steel mesh frame (13) is arranged inside the pile body (101).

3. A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure according to claim 1, characterized in that: A plurality of steel bars (14) are evenly installed on both sides of the inner wall of the receiving frame (5), a bottom groove (15) is provided at the bottom end of the casting groove (4), and a casting opening (16) is formed at the middle of the inner frame (7).

4. A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure according to claim 1, characterized in that: The contact surface between the bottom plate (9) and the sealing rubber (11) is an inclined surface. A groove (17) is provided at the top end of the bottom plate (9) corresponding to the position where the screw rod (12) passes through. A sealing ring (18) is sleeved on the top end of the outer side of the screw rod (12).

5. A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure according to claim 1, characterized in that: The outer edge of the top frame (3) is connected to a surrounding frame (31) in an integral structure, and the surrounding frame (31) is covered at the outer edge of the pile head (102). A water stop strip (19) is provided around the surface of the concrete cushion layer (2) at the connection with the pile foundation.

6. A photovoltaic power station support concrete cast-in-place pile foundation waterproof structure according to claim 1, characterized in that: The top frame (3) and the bottom plate are both made of stainless steel, and the top end of the screw rod (12) is coated with a corrosion-resistant coating.

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