Composite material pipe pile with sparse holes in bottom

Abstract

The utility model discloses a composite material pipe pile with sparse holes at the bottom, which belongs to the technical field of composite material pipe piles and comprises a first composite material pile body and a second composite material pile body fixed on the first composite material pile body. The first composite material pile body sequentially comprises an inner fiber winding layer, an outer fiber winding layer and an anti-aging layer. In the process of winding and preparing the inner structure layer of the composite material pipe pile, the sparse holes are naturally formed through the inner reserved notches and the outer reserved notches which are distributed in a crossed mode; in the construction process of the composite material pipe pile, concrete slurry is jetted outwards through reserved sparse holes and is dried to form a branch-shaped structure similar to a root system of a grass plant, gaps of a soil layer around comb holes in the bottom of the composite material pipe pile are densely poured, and the combination effect of the composite material pipe pile and an underground soil layer such as the sandy soil geology is remarkably improved; the composite material pipe pile is prevented from loosening in the using process, and the using safety and stability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite material pipe piles, and particularly relates to a composite material pipe pile with pores at the bottom. Background Art

[0002] Composite materials have greater advantages than reinforced concrete in terms of strength and are comparable to the mechanical properties of steel Q235. However, composite materials are superior to steel and concrete in terms of corrosion resistance. When used as pipe piles, precast concrete construction can be not considered, and they can be directly buried in the ground, which can greatly reduce the project cost and is particularly suitable for photovoltaic pile foundation application scenarios such as deserts, saline-alkali lands, near the sea, and tidal flats.

[0003] The current composite material pipe piles generally consist of an inner structural layer and an anti-aging layer. Among them, the inner structural layer is made by winding and laying fibers. The construction method of composite material pipe piles is relatively simple. After digging a ground hole at the designated position and placing the pipe pile in the ground hole, quick-setting concrete grouting should be carried out as soon as possible to fill the gap between the tower body and the hole body densely. However, with the above construction method, the bonding effect between the concrete and the composite material pipe pile is poor, resulting in unstable installation of the composite material pipe pile and being prone to looseness during use, affecting the safety and stability of the composite material pipe pile. Especially when encountering sandy soil strata, it is difficult to fix the composite material pipe pile, which hinders its large-scale application, such as the installation and fixation of photovoltaic components in deserts.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a composite material pipe pile with pores at the bottom.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a composite material pipe pile with pores at the bottom, which can solve the problem that the bonding effect between poor underground soil layers, such as sandy soil layers, and the composite material pipe pile is poor, resulting in unstable installation of the composite material pipe pile. This problem is prone to looseness during use and affects the safety and stability of the composite material pipe pile.

[0007] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0008] A composite material pipe pile with pores at the bottom, comprising a first composite material pile body and a second composite material pile body, and the second composite material pile body is fixed on the first composite material pile body;

[0009] The first composite material pile body sequentially includes an inner fiber winding layer, an outer fiber winding layer and an anti-aging layer. The inner fiber winding layer is formed by winding inner fiber bundles, and the outer fiber winding layer is formed by winding outer fiber bundles;

[0010] Multiple groups of inner reserved notches (or slits) are arranged on the inner fiber bundles, and multiple groups of outer reserved notches (or slits) are arranged on the outer fiber bundles. The multiple groups of inner reserved notches and the multiple groups of outer reserved notches are cross-distributed, and a reserved porous part is formed at the cross-overlapping part.

[0011] In one or more embodiments of the present utility model, the widths of the inner reserved notches and the outer reserved notches are 1-5 cm.

[0012] In one or more embodiments of the present utility model, the winding and laying directions of the inner fiber bundles and the outer fiber bundles are consistent with the axis direction of the first composite material pile body.

[0013] In one or more embodiments of the present utility model, the shape of the reserved porous part is any one or a combination of multiple types of rhombus, square or irregular quadrilateral.

[0014] In one or more embodiments of the present utility model, a support pipe is inserted into the reserved porous part, and the support pipe is communicated with the inside of the first composite material pile body.

[0015] In one or more embodiments of the present utility model, the support pipe includes a limit stop block and a pipe body, and the pipe body is inserted into the reserved porous part.

[0016] In one or more embodiments of the present utility model, there is a gap between the outer wall of the pipe body and the inner wall of the reserved porous part, and the anti-aging layer penetrates into the gap.

[0017] In one or more embodiments of the present utility model, the limit stop block is fixed at one end of the pipe body, and one side surface of the limit stop block is attached to the inner wall of the first composite material pile body.

[0018] In one or more embodiments of the present utility model, the projected area of the limit stop block on the inner wall of the first composite material pile body is larger than the cross-sectional area of the reserved porous part.

[0019] In one or more embodiments of the present utility model, the anti-aging layer is any one or a combination of multiple types of aliphatic polyurethane resin layer, polycarbonate layer, polymethyl methacrylate layer or graphene composite material layer.

[0020] Compared with the prior art, the utility model draws on the fracturing oil well technology. During the process of winding and preparing the inner structural layer of the composite material pipe pile, reserved pores are naturally formed through the cross-distributed inner reserved notches and outer reserved notches. During the construction process of the composite material pipe pile, by injecting slurry into the interior of the composite material pipe pile, the concrete slurry can be sprayed outwards through the reserved pores, and a structure in the shape of a branch is formed after drying, filling and compacting the gaps in the soil layer around the bottom comb holes of the composite material pipe pile, significantly improving the bonding effect between the composite material pipe pile and the underground soil layer, such as sandy soil, preventing loosening during the use of the composite material pipe pile, and improving the safety and stability of use;

[0021] The composite material pipe pile with bottom comb holes of the utility model is particularly suitable for pile foundation projects in desert areas, such as desert photovoltaic applications. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a partial cross-sectional view of the composite material pipe pile with bottom comb holes in an embodiment of the present utility model;

[0024] Figure 2 It is a top-down cross-sectional view of the first composite material pile body of the composite material pipe pile with bottom comb holes in an embodiment of the present utility model;

[0025] Figure 3 It is of the composite material pipe pile with bottom comb holes in an embodiment of the present utility model Figure 2 Enlarged view at position A;

[0026] Figure 4 It is a construction schematic diagram of the composite material pipe pile with bottom comb holes in an embodiment of the present utility model;

[0027] Figure 5 It is a partial structural diagram of the inner fiber bundle and outer fiber bundle of the composite material pipe pile with bottom comb holes in an embodiment of the present utility model.

[0028] Main reference numerals description:

[0029] 10. First composite pile body; 11. Inner fiber winding layer; 111. Inner fiber bundle; 1111. Inner reserved gap; 12. Outer fiber winding layer; 121. Outer fiber bundle; 1211. Outer reserved gap; 13. Anti-aging layer; 14. Support tube; 141. Limit block; 142. Tube body; 15. Reserved holes; 20. Second composite pile body; 30. Ground. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] like Figures 1 - 5 As shown, the composite pipe pile with sparse holes at the bottom in one embodiment of the utility model includes a first composite pile body 10 and a second composite pile body 20. The second composite pile body 20 and the first composite pile body 10 can be plugged and assembled on the construction site for easy transportation. The plug-in depth can be adjusted according to actual needs, which is safe and reliable.

[0032] like Figure 3 As shown, the first composite pile body 10 includes an inner fiber winding layer 11, an outer fiber winding layer 12 and an anti-aging layer 13 in sequence, wherein the inner fiber winding layer 11 and the outer fiber winding layer 12 together constitute an inner structural layer, which is the mechanical bearing part of the composite pipe pile, that is, the load received by the composite pole tower during operation is borne by the inner structural layer.

[0033] The anti-aging layer 13 is located at the outermost layer. Preferably, in this embodiment, the anti-aging layer 13 is preferably an aliphatic polyurethane resin layer, which has excellent UV aging resistance and can ensure a service life of more than 50 years.

[0034] like Figure 1 Combination Figure 5 As shown, the inner fiber winding layer 11 is the innermost layer, and the inner fiber winding layer 11 is formed by winding the inner fiber bundle 111 . The outer fiber winding layer 12 is located at the outer layer of the inner fiber winding layer 11 , and the outer fiber winding layer 12 is formed by winding the outer fiber bundle 121 .

[0035] The winding and laying directions of the inner fiber bundle 111 and the outer fiber bundle 121 are consistent with the axis direction of the first composite material pile body 10, and both the inner fiber bundle 111 and the outer fiber bundle 121 adopt the winding method at a small angle. This can greatly improve the axial bending resistance of the composite material pipe pile, and the bending strength is 2-3 times that of the composite material pipe pile made by the conventional winding process, effectively improving the bearing capacity moment of the composite material pipe pile.

[0036] Multiple groups of inner reserved notches 1111 are arranged on the inner fiber bundle 111, and multiple groups of outer reserved notches 1211 are arranged on the outer fiber bundle 121. The multiple groups of inner reserved notches 1111 and the multiple groups of outer reserved notches 1211 are cross-distributed, and a reserved porous 15 is formed at each cross node, so that a number of reserved pores 15 can be formed. Through the formed number of reserved pores 15, the concrete slurry can be allowed to spout out from the inside of the composite material pipe pile to realize the filling of the gaps in the underground soil layer.

[0037] Among them, the inner reserved notch 1111 and the outer reserved notch 1211 can also be slits.

[0038] Preferably, in this embodiment, the shape of the reserved pore 15 can be any one or a combination of a rhombus, a square or an irregular quadrilateral, but is not limited to the above shapes. The specific shape depends on the crossing angle between the inner reserved notch 1111 and the outer reserved notch 1211.

[0039] Among them, the widths of the inner reserved notch 1111 and the outer reserved notch 1211 are 1-5 cm, and reserved pores 15 with a certain size can be formed. A support pipe 14 is inserted into the inside of the reserved pore 15, and the support pipe 14 is communicated with the inside of the first composite material pile body 10. The concrete slurry entering the inside of the first composite material pile body 10 flows out through the support pipe 14.

[0040] Specifically, the support pipe 14 includes a limit stop block 141 and a pipe body 142. The pipe body 142 is inserted into the inside of the reserved pore 15, which can play a supporting role inside the reserved pore 15 to prevent the reserved pore 15 from deforming, and at the same time can eliminate the negative effect of the reduction of the structural strength caused by the reserved pore 15.

[0041] As Figure 3 shown, there is a gap between the outer wall of the pipe body 142 and the inner wall of the reserved pore 15, and the anti-aging layer 13 penetrates into the gap. That is to say, during the coating process of the anti-aging layer 13, part of the aliphatic polyurethane resin forming the anti-aging layer 13 can penetrate into the gap between the pipe body 142 and the reserved pore 15, and can be fixed to the pipe body 142 after solidification.

[0042] Specifically, the pipe body 142 can be inserted into the reserved pores 15 before applying the anti-aging layer 13. After applying the anti-aging layer 13, the pipe body 142 can be fixed by means of the anti-aging layer 13.

[0043] The limit stop 141 is integrally formed with the pipe body 142. One side surface of the limit stop 141 is attached to the inner wall of the first composite material pile body 10. The projected area of the limit stop 141 on the inner wall of the first composite material pile body 10 is larger than the cross-sectional area of the reserved pores 15. That is to say, the limit stop 141 can block and limit the pipe body 142 to prevent the pipe body 142 from being extruded and falling off due to pressure.

[0044] Specifically, through the limit stop 141 and the pipe body 142, the inside of the composite material pipe pile can be connected to the inside of the ground hole. The concrete slurry injected into the composite material pipe pile can enter the ground hole through the limit stop 141 and the pipe body 142 to fill the gaps in the ground hole.

[0045] During production, first use the inner fiber bundle 111 to wind and form the inner fiber winding layer 11, and then use the outer fiber bundle 121 to wind and form the outer fiber winding layer 12. During the winding process, the reserved pores 15 are naturally formed by means of the inner reserved notch 1111 and the outer reserved notch 1211. After inserting the support pipe 14 into the reserved pores 15, then apply the anti-aging layer 13, and the preparation of the composite material pipe pile is completed.

[0046] As Figure 4 shown, during construction, dig a ground hole at the designated position on the ground 30. After placing the composite material pipe pile in the ground hole and positioning it, pour quick-setting concrete into the composite material pipe pile, and use compressed air to apply pressure so that the concrete slurry is sprayed into the underground soil layer through a number of reserved pores 15 to fill the gaps between the composite material pipe pile and the underground soil layer tightly. After solidification, the slurry inside the first composite material pile body 10 can form a connection with the external slurry, enabling the composite material pipe pile to be efficiently combined with the concrete slurry, and completing the stable installation of the composite material pipe pile.

[0047] The utility model draws on the technology of fracturing oil wells. During the process of winding and preparing the inner structural layer of the composite material pipe pile, the reserved pores 15 are naturally formed by the cross-distributed inner reserved notch 1111 and outer reserved notch 1211. During the construction process of the composite material pipe pile, by injecting slurry into the composite material pipe pile, the concrete slurry can be sprayed outwards through the reserved pores 15 and form a structure in the shape of a branch after drying, filling the gaps around the bottom pores of the composite material pipe pile in the soil layer tightly, significantly improving the bonding effect between the composite material pipe pile and the underground soil layer, such as sandy soil, preventing the composite material pipe pile from loosening during use, and enhancing the safety and stability of use. The composite material pipe pile with bottom pores of the utility model is particularly suitable for pile foundation projects in desert areas, such as desert photovoltaic applications.

[0048] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0049] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The composite material pipe pile with pores at the bottom is characterized in that It includes a first composite material pile body and a second composite material pile body, and the second composite material pile body is fixed on the first composite material pile body; The first composite material pile body sequentially includes an inner fiber winding layer, an outer fiber winding layer and an anti-aging layer. The inner fiber winding layer is formed by winding inner fiber bundles, and the outer fiber winding layer is formed by winding outer fiber bundles; Multiple groups of inner reserved notches are arranged on the inner fiber bundles, and multiple groups of outer reserved notches are arranged on the outer fiber bundles. The multiple groups of inner reserved notches and the multiple groups of outer reserved notches are cross-distributed, and a reserved porous part is formed at the cross-overlapping part.

2. The composite material pipe pile with bottom pores dredged according to claim 1, characterized in that, The width of the inner reserved notch and the outer reserved notch is 1-5 cm.

3. The composite material pipe pile with bottom porous holes according to claim 1, characterized in that, The winding and laying directions of the inner fiber bundles and the outer fiber bundles are consistent with the axis direction of the first composite material pile body.

4. The composite material pipe pile with bottom pores dredged according to claim 1, characterized in that, The shape of the reserved porous part is any one or a combination of multiple types including rhombus, square or irregular quadrilateral.

5. The composite material pipe pile with bottom drainage holes according to claim 4, characterized in that, A support pipe is inserted into the reserved porous part, and the support pipe is communicated with the inside of the first composite material pile body.

6. The composite material pipe pile with bottom pores dredged according to claim 5, characterized in that, The support pipe includes a limit stop block and a pipe body, and the pipe body is inserted into the inside of the reserved porous part.

7. The composite material pipe pile with bottom pores dredged according to claim 6, characterized in that, There is a gap between the outer wall of the pipe body and the inner wall of the reserved porous part, and the anti-aging layer penetrates into the inside of the gap.

8. The composite material pipe pile with bottom pores dredged according to claim 6, characterized in that, The limit stop block is fixed at one end of the pipe body, and one side surface of the limit stop block is attached to the inner wall of the first composite material pile body.

9. The composite material pipe pile with bottom drainage holes according to claim 8, wherein, The projected area of the limit stop block on the inner wall of the first composite material pile body is larger than the cross-sectional area of the reserved porous part.

Images