Prestressed high-strength concrete pipe pile with anticorrosive coating

Abstract

The invention belongs to the field of concrete pipe piles, and particularly relates to a prestressed high-strength concrete pipe pile with an anticorrosive coating, which comprises a pipe pile body, end plates are fixedly connected to the upper end and the lower end of the pipe pile body, the anticorrosive coating is arranged on the surface of the pipe pile body, and a plurality of vertical metal wires are fixedly connected in the anticorrosive coating. The multiple vertical metal wires are arranged on the corrosion-resistant layer in an annular array mode, the vertical metal wires are fixedly connected with the multiple annular reinforcing wires in the axis direction of the pipe pile, and the annular reinforcing wires are fixedly connected with the corrosion-resistant layer. During use, the corrosion-resistant layer is coated and cured on the surface of the prestressed high-strength concrete pipe pile, so that the effect of corrosion prevention of the surface of the pipe pile can be achieved; at present, pile sinking modes are divided into hammering and static pressure, the hammering mode has the high requirement for the strength of the pipe pile, the corrosion-resistant layer is prone to being damaged by hammering impact, and the tear resistance of the corrosion-resistant layer and the strength of the corrosion-resistant layer can be improved by means of the vertical metal wires and the annular reinforcing wires.

Description

Technical Field

[0001] The invention relates to the field of concrete pipe piles, in particular to a prestressed high-strength concrete pipe pile with an anti-corrosion coating. Background Art

[0002] Pipe piles are divided into post-tensioned prestressed pipe piles and pre-tensioned prestressed pipe piles, prestressed concrete pipe piles (PC pipe piles) and prestressed concrete thin-walled pipe piles (PTC pipe piles) and high-strength prestressed concrete pipe piles (PHC pipe piles).

[0003] Prestressed high-strength concrete pipe piles are made by pre-stressed centrifugal forming technology. A welded steel cage is arranged inside, and a certain stress will be applied to the steel cage in advance when the mold is used for forming. The prestress can significantly improve the tensile and bending resistance of the pipe piles. During the construction of pile sinking, there are two types of pile sinking processes, one is hammer type and the other is static pressure type. The hammer type relies on lifting the pile hammer to reciprocate and hammer the pile cap installed at the end of the pipe pile to drive the pipe pile into the soil layer.

[0004] The Chinese utility model patent with publication number CN220150294U discloses a concrete pipe pile, including a pipe pile and a positioning mechanism. The positioning mechanism array is arranged at intervals on the outer circular wall of the pipe pile. The positioning mechanism includes a collar, a mounting frame, and a slide rod. The collar is fixedly sleeved on the outer circular wall of the pipe pile in an equidistant array. The mounting frame is fixedly mounted on the outer circular wall of the collar in a circumferential array. A slot is opened on the outer side of the mounting frame. The slide rod is correspondingly slidably inserted in the slot. Rotating seats are fixedly installed on both sides of the outer end of the slide rod. Rollers are rotatably installed in the rotating seat. Connecting mechanisms are installed at both ends of the pipe pile. This design allows the rollers arranged in the circumferential array to contact the inner wall of the cement pipe pile hole when the static drilling root pile process is used for construction, thereby ensuring that the outer side of the pipe pile is subjected to relatively uniform resistance force at 360 degrees, thereby correcting the offset posture of the pipe pile when it falls, so that the final implantation and fixation of the pipe pile is in a vertical state, thereby ensuring the stability of the upper base building.

[0005] However, during use, the existing concrete pipe piles have poor corrosion resistance and it is difficult to ensure performance in a corrosive environment; therefore, in order to solve the above problem, a prestressed high-strength concrete pipe pile with an anti-corrosion coating is proposed. Summary of the invention

[0006] In order to solve the technical problem raised in the background technology, the present invention provides a prestressed high-strength concrete pipe pile with an anti-corrosion coating.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the prestressed high-strength concrete pipe pile with an anti-corrosion coating described in the present invention includes a pipe pile body, the upper and lower ends of the pipe pile body are fixedly connected with end plates, the surface of the pipe pile body is provided with a corrosion-resistant layer, the interior of the corrosion-resistant layer is fixedly connected with a plurality of vertical metal wires, the plurality of vertical metal wires are arranged in a circular array on the corrosion-resistant layer, the vertical metal wires are fixedly connected with a plurality of annular reinforcement wires along the axial direction of the pipe pile, the annular reinforcement wires and the corrosion-resistant layer are fixedly connected, and the corrosion-resistant layer is coated on the surface of the prestressed high-strength concrete pipe pile to solidify it, so as to play a role in corrosion protection of the pipe pile surface, thereby improving the corrosion resistance of the pipe pile, and relying on the vertical metal wires and the annular reinforcement wires to improve the tear resistance of the corrosion-resistant layer and improve the strength of the corrosion-resistant layer.

[0008] Preferably, a plurality of vertical poles are fixedly connected between the two end plates, a plurality of protrusions are fixedly connected to the sides of the vertical poles, the bottoms of the protrusions are inclined, injection holes are provided on the protrusions, an infusion hole is provided inside the vertical poles, the infusion hole and the injection hole are connected, a high-pressure pipe joint is installed on the top of the infusion hole, and the plurality of vertical poles are arranged in a circular array on the outside of the corrosion-resistant layer.

[0009] Preferably, the diameter of the end plate is 5-12 cm larger than the diameter of the pipe pile body, and a pile head is installed on the end plate located at the bottom end of the pipe pile body, and the bottom of the pile head is arranged in a conical structure.

[0010] Preferably, a plurality of protective plates are provided between two adjacent vertical poles, the plurality of protective plates are coated on the surface of the corrosion-resistant layer, and the plurality of protective plates are mounted on the vertical poles by bolts.

[0011] Preferably, an anti-blocking component is provided on the side of the protrusion and at the position corresponding to the injection hole, and the anti-blocking component can prevent soil from clogging the injection hole during the pile driving process.

[0012] Preferably, the anti-blocking component includes a seat body, a spring and a ball, the seat body is fixedly connected to the end of the injection hole, a sealing groove is provided inside the seat body, a through groove connected to the injection hole is provided at the end of the sealing groove, the spring is fixedly connected to the inner side wall of the sealing groove, the ball is fixedly connected to the end of the spring, and the ball can seal the end of the sealing groove.

[0013] Preferably, the anti-blocking assembly includes an anti-blocking plate, which is fixed to the side of the protrusion at a position corresponding to the injection hole, a glue outlet is provided on the top of the anti-blocking plate, and the side of the anti-blocking plate away from the protrusion is a slope inclined downward.

[0014] Preferably, a plurality of support plates are fixedly connected to the surface of the protective plate, a side of the support plate away from the protective plate is a slope inclined downward, a groove is provided inside the support plate, and a plurality of through holes are provided on the end plate.

[0015] Preferably, an annular seat is fixedly connected to the middle of the end plate, a steel column is slidably connected to the middle of the annular seat, and a sealing plate is hingedly connected to the top side of the annular seat at the bottom end of the pipe pile body.

[0016] Preferably, the corrosion-resistant layer is any one of an epoxy anti-corrosion coating, a hot-dip galvanized layer, a polyurethane coating and a plastic layer.

[0017] The present invention is beneficial in that: 1. The present invention provides a corrosion-resistant layer, a vertical metal wire and an annular reinforcing wire. When in use, the corrosion-resistant layer is coated on the surface of the prestressed high-strength concrete pipe pile to prevent the surface of the pipe pile from corrosion, thereby improving the corrosion resistance of the pipe pile. At present, there are two ways of pile sinking: hammering and static pressure. The hammering method has high requirements on the strength of the pipe pile, and the impact of the hammering is easy to damage the corrosion-resistant layer. The vertical metal wire and the annular reinforcing wire can improve the tear resistance of the corrosion-resistant layer and improve the strength of the corrosion-resistant layer; 2. The present invention is provided with vertical rods, protrusions, infusion holes and injection holes. When in use, the vertical rods are welded between the two end plates, and the protrusions on the vertical rods are inserted into the soil layer. After the pile sinking is completed, the staff connects the pipeline of the high-pressure pump with the high-pressure pipe joint, and then relies on the high-pressure pump to inject solidifying liquid into the infusion hole and spray it out from the injection hole, so as to spray the solidifying liquid on the surface of the pipe pile, and wait for the solidifying liquid to form a protective layer on the outer surface of the pipe pile, and can play a role in solidifying the soil, especially for relatively soft sandy soil layers, wherein the solidifying liquid can also be epoxy resin or polyurethane resin, which can form a reinforced protective layer on the surface of the pipe pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the corrosion-resistant layer of the present invention; Figure 2 It is a schematic diagram of the structure of the vertical metal wire and the annular reinforcing wire of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the end of the pipe pile body of the present invention; Figure 4 It is a schematic diagram of the structure of the protective plate of the present invention; Figure 5 It is a schematic diagram of the seat structure of the present invention; Figure 6 It is a schematic diagram of the anti-blocking plate structure of the present invention.

[0020] In the figure: 11, pipe pile body; 12, end plate; 13, corrosion-resistant layer; 14, vertical metal wire; 15, annular reinforcing wire; 21, vertical pole; 22, bump; 23, infusion hole; 24, injection hole; 3, pile head; 4, protective plate; 61, seat body; 62, ball bearing; 63, sealing groove; 64, spring; 71, anti-blocking plate; 72, glue outlet; 81, support plate; 82, through hole; 83, groove; 91, sealing plate; 92, annular seat; 93, steel column. DETAILED DESCRIPTION

[0021] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Specific examples are given below. Embodiment 1

[0023] See also Figure 1-2 As shown, a prestressed high-strength concrete pipe pile with an anti-corrosion coating comprises a pipe pile body 11, the upper and lower ends of the pipe pile body 11 are fixedly connected with end plates 12, a corrosion-resistant layer 13 is provided on the surface of the pipe pile body 11, a plurality of vertical metal wires 14 are fixedly connected inside the corrosion-resistant layer 13, the plurality of vertical metal wires 14 are arranged on the corrosion-resistant layer 13 in an annular array, the vertical metal wires 14 are fixedly connected with a plurality of annular reinforcing wires 15 along the axial direction of the pipe pile, and the annular reinforcing wires 15 are fixedly connected to the corrosion-resistant layer 13; When in use, a solidified corrosion-resistant layer 13 is coated on the surface of the prestressed high-strength concrete pipe pile to prevent corrosion on the surface of the pipe pile, thereby improving the corrosion resistance of the pipe pile. Currently, there are two ways of pile sinking: hammering and static pressure. The hammering method has higher requirements on the strength of the pipe pile, and the impact of the hammering can easily damage the corrosion-resistant layer 13. The vertical metal wire and the annular reinforcement wire 15 can improve the tear resistance of the corrosion-resistant layer 13 and improve the strength of the corrosion-resistant layer 13.

[0024] Further, such as Figure 1 and Figure 3 As shown, a plurality of vertical rods 21 are fixedly connected between the two end plates 12, a plurality of protrusions 22 are fixedly connected to the side of the vertical rod 21, the bottom of the protrusion 22 is arranged obliquely, an injection hole 24 is provided on the protrusion 22, an infusion hole 23 is provided inside the vertical rod 21, the infusion hole 23 is connected to the injection hole 24, a high-pressure pipe joint is installed on the top of the infusion hole 23, and a plurality of vertical rods 21 are arranged in a ring array outside the corrosion-resistant layer 13; When in use, a vertical pole 21 is welded between the two end plates 12, and the protrusion 22 on the vertical pole 21 is inserted into the soil layer. After the pile is sunk, the staff connects the pipeline of the high-pressure pump to the high-pressure pipe joint, and then relies on the high-pressure pump to inject solidifying liquid into the infusion hole 23 and spray it out from the injection hole 24, so as to spray the solidifying liquid on the surface of the pipe pile, and wait for the solidifying liquid to form a protective layer on the outer surface of the pipe pile, and it can play a role in solidifying the soil, especially for relatively soft sandy soil layers, wherein the solidifying liquid can also be epoxy resin or polyurethane resin, which can form a reinforced protective layer on the surface of the pipe pile.

[0025] Further, such as Figure 1 and Figure 3 As shown, the diameter of the end plate 12 is 5-12 cm larger than the diameter of the pipe pile body 11, and a pile head 3 is installed on the end plate 12 at the bottom end of the pipe pile body 11, and the bottom of the pile head 3 is arranged in a conical structure; When in use, the pile head 3 installed on the end plate 12 can facilitate pile sinking, wherein the diameter of the end plate 12 is 5-12 cm larger than the diameter of the pipe pile body 11, so that a certain gap is formed between the pipe pile and the soil layer, thereby facilitating the coating and solidification of the solidifying liquid on the surface of the pipe pile.

[0026] Further, such as Figure 5 As shown, anti-blocking components are provided at the corresponding positions of the side of the protrusion 22 and the injection hole 24, and the anti-blocking components can prevent the soil from clogging the injection hole 24 during the pile driving process; the anti-blocking component includes a seat body 61, a spring 64 and a ball 62, the seat body 61 is fixedly connected to the end of the injection hole 24, a sealing groove 63 is provided inside the seat body 61, and a through groove connected to the injection hole 24 is provided at the end of the sealing groove 63, the spring 64 is fixedly connected to the inner side wall of the sealing groove 63, and the ball 62 is fixedly connected to the end of the spring 64, and the ball 62 can block the end of the sealing groove 63.

[0027] In this embodiment, when the soil is highly viscous, it is easy to cause the injection hole 24 to be blocked. When in use, the ball 62 is pulled and fixed to the end of the sealing groove 63 by the spring 64, so as to seal the end of the sealing groove 63. The sealing groove 63 is connected to the injection hole 24 through the through groove, and then the pressure of the solidifying liquid pushes the ball 62 to release the seal on the end of the sealing groove 63, thereby avoiding the situation where the soil blocks the injection hole 24 during the pile sinking process.

[0028] Further, such as Figure 2-3 As shown, an annular seat 92 is fixedly connected to the middle of the end plate 12 , a steel column 93 is slidably connected to the middle of the annular seat 92 , and a sealing plate 91 is hingedly connected to the top side of the annular seat 92 at the bottom end of the pile body 11 .

[0029] When in use, after the installation of the pipe pile is completed, the staff will hang the steel column 93 and then insert the steel column 93 into the middle of the annular seat 92. The annular seat 92 is used to guide the steel column 93. The steel column 93 is squeezed by the corresponding hydraulic equipment, so that the pile head 3 moves downward and separates from the pipe pile to create a certain gap, so that the solidifying liquid can cover the bottom end of the pipe pile and improve the anti-corrosion effect of the bottom end of the pipe pile. After the steel column 93 is pulled out, the sealing plate 91 falls and blocks the middle part of the annular seat 92, thereby preventing the solidifying liquid from entering the interior of the pipe pile.

[0030] Furthermore, the corrosion-resistant layer 13 is any one of an epoxy anti-corrosion coating, a hot-dip galvanized layer, a polyurethane coating and a plastic layer. Embodiment 2

[0031] like Figure 6 As shown, the anti-blocking assembly includes an anti-blocking plate 71, which is fixed to the side of the protrusion 22 at a position corresponding to the injection hole 24, and a glue outlet 72 is opened on the top of the anti-blocking plate 71, and the side of the anti-blocking plate 71 away from the protrusion 22 is a slope inclined downward; In this embodiment, the anti-blocking plate 71 is used to cover the end of the injection hole 24. The side of the anti-blocking plate 71 away from the protrusion 22 is a downward inclined slope that can easily push away the soil near the injection hole 24, thereby playing an anti-blocking role, and the solidifying liquid flows out from the glue outlet 72 at the top. Embodiment 3

[0032] like Figure 4 As shown, a plurality of protective plates 4 are provided between two adjacent vertical poles 21, and the plurality of protective plates 4 are coated on the surface of the corrosion-resistant layer 13, and the plurality of protective plates 4 are installed on the vertical poles 21 by bolts; In this embodiment, when the soil is a layer with more sand and gravel, the staff can install the protective plate 4 on the vertical pole 21 by bolts, and multiple protective plates 4 are covered on the surface of the corrosion-resistant layer 13. The protective plate 4 is located on the surface of the corrosion-resistant layer 13, which can play a protective role, thereby reducing the situation where the corrosion-resistant layer 13 is damaged by stones squeezing.

[0033] Further, such as Figure 1 and Figure 4 A plurality of support plates 81 are fixedly connected to the surface of the protection plate 4. The side of the support plate 81 away from the protection plate 4 is a slope inclined downward. A groove 83 is formed inside the support plate 81. A plurality of through holes 82 are formed on the end plate 12. In this embodiment, when the sandy loam layer is relatively soft, when in use, the end plate 12 is larger than the diameter of the pipe pile, and the support plate 81 is used to support the gap between the pipe pile and the soil layer. The groove 83 on the support plate 81 is used for the solidifying liquid to flow in and facilitate the solidifying liquid to fill the space between the pipe pile and the soil layer, and the support plate 81 can increase the fixing effect between the soil layer, and the through hole 82 on the end plate 12 is used to facilitate the solidifying liquid to flow downward to cover the bottom end of the pipe pile.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A prestressed high-strength concrete pipe pile with an anti-corrosion coating, comprising a pipe pile body (11), wherein both upper and lower ends of the pipe pile body (11) are fixedly connected to end plates (12), characterized in that: A corrosion-resistant layer (13) is provided on the surface of the pipe pile body (11), a plurality of vertical metal wires (14) are fixedly connected inside the corrosion-resistant layer (13), the plurality of vertical metal wires (14) are arranged on the corrosion-resistant layer (13) in an annular array, the vertical metal wires (14) are fixedly connected to a plurality of annular reinforcement wires (15) along the axial direction of the pipe pile, and the annular reinforcement wires (15) are fixedly connected to the corrosion-resistant layer (13).

2. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 1, characterized in that: A plurality of vertical rods (21) are fixedly connected between the two end plates (12); a plurality of protrusions (22) are fixedly connected to the side surfaces of the vertical rods (21); the bottoms of the protrusions (22) are arranged in an inclined manner; an injection hole (24) is provided on the protrusions (22); an infusion hole (23) is provided inside the vertical rods (21); the infusion hole (23) and the injection hole (24) are connected; a high-pressure pipe joint is installed at the top of the infusion hole (23); and the plurality of vertical rods (21) are arranged in a ring array outside the corrosion-resistant layer (13).

3. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 2, characterized in that: The diameter of the end plate (12) is 5-12 centimeters larger than the diameter of the pipe pile body (11). A pile head (3) is installed on the end plate (12) located at the bottom end of the pipe pile body (11), and the bottom of the pile head (3) is arranged in a conical structure.

4. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 3, characterized in that: A plurality of protective plates (4) are provided between two adjacent vertical poles (21); the plurality of protective plates (4) are coated on the surface of the corrosion-resistant layer (13); and the plurality of protective plates (4) are mounted on the vertical poles (21) by means of bolts.

5. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 2, characterized in that: Anti-blocking components are provided at positions corresponding to the side faces of the protrusion (22) and the injection hole (24), and the anti-blocking components can prevent soil from blocking the injection hole (24) during the pile sinking process.

6. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 5, characterized in that: The anti-blocking component comprises a seat body (61), a spring (64) and a ball (62); the seat body (61) is fixedly connected to the end of the injection hole (24); a sealing groove (63) is provided inside the seat body (61); a through groove connected to the injection hole (24) is provided at the end of the sealing groove (63); the spring (64) is fixedly connected to the inner side wall of the sealing groove (63); the ball (62) is fixedly connected to the end of the spring (64); and the ball (62) can block the end of the sealing groove (63).

7. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 5, characterized in that: The anti-blocking assembly comprises an anti-blocking plate (71), the anti-blocking plate (71) being fixedly connected to a side surface of the protrusion (22) at a position corresponding to the injection hole (24), a glue outlet (72) being provided at the top of the anti-blocking plate (71), and a side of the anti-blocking plate (71) away from the protrusion (22) being a slope inclined downward.

8. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 4, characterized in that: A plurality of support plates (81) are fixedly connected to the surface of the protection plate (4); a side of the support plate (81) away from the protection plate (4) is a slope inclined downward; a groove (83) is provided inside the support plate (81); and a plurality of through holes (82) are provided on the end plate (12).

9. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 2, characterized in that: An annular seat (92) is fixedly connected to the middle of the end plate (12), a steel column (93) is slidably connected to the middle of the annular seat (92), and a sealing plate (91) is hingedly connected to the top side of the annular seat (92) at the bottom end of the pipe pile body (11).

10. The prestressed high-strength concrete pipe pile with an anti-corrosion coating according to claim 1, characterized in that: The corrosion-resistant layer (13) is any one of an epoxy anti-corrosion coating, a hot-dip galvanized layer, a polyurethane coating and a plastic layer.

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