Constructional engineering concrete pipe pile

Abstract

A constructional engineering concrete pipe pile relates to the technical field of pipe piles and comprises a pipe body, a reinforcement cage is embedded in the pipe body, an upper steel plate and a lower steel plate are fixedly connected to the upper end and the lower end of the reinforcement cage respectively, a fixed steel plate is fixedly connected to the lower end of the lower steel plate, a plurality of second screw holes are formed in the lower steel plate, and a plurality of screws are arranged on the fixed steel plate. A plurality of gears are rotationally connected between the lower steel plate and the fixed steel plate in a circumferential distribution mode, and studs are fixedly connected to the gears and penetrate through the fixed steel plate to extend out of the fixed steel plate; according to the constructional engineering concrete pipe pile, the sliding rod is used as a handle to push the gear ring to rotate, then the studs are driven to rotate, the sliding rod is used as a handle to push the gear ring to rotate, the studs are driven to rotate, and therefore the sliding rod is driven to rotate, so that the construction efficiency is improved, and the construction quality is improved. And then the studs are screwed into the first screw holes, connection between the upper pipe pile and the lower pipe pile is completed, and therefore the problem that connection is not firm enough due to welding quality is solved.

Description

Technical Field

[0001] This invention belongs to the field of pipe pile technology, and more specifically, relates to a concrete pipe pile for building engineering. Background Technology

[0002] Prestressed concrete pipe piles have advantages such as fast construction and good pile quality, and have been widely used in building construction in recent years. However, the construction of prestressed concrete pipe piles often involves splicing two or more pipe piles to drive them deeper. Currently, the connection between the pipe pile ends is generally fixed by welding, which is greatly affected by the welding quality. The complex underground stresses experienced by the pipe pile can easily lead to cracking at the weld, resulting in an unstable connection between the prestressed pipe ends. Furthermore, existing prestressed concrete pipe piles have poor pull-out resistance. Therefore, to address the shortcomings mentioned above, there is an urgent need to propose a new type of concrete pipe pile for building engineering to overcome the deficiencies in current practical applications. Summary of the Invention

[0003] The present invention aims to solve the problems of insufficient structural strength of the connection of existing prestressed pipe piles by welding and insufficient pull-out resistance of the prestressed pipe piles.

[0004] The purpose and effect of this invention for a concrete pipe pile in building engineering are achieved by the following specific technical means: A concrete pipe pile for building engineering includes a pipe body, in which a reinforcing cage is embedded. An upper steel plate and a lower steel plate are fixedly connected to the upper and lower ends of the reinforcing cage, respectively, and the upper and lower steel plates are fixedly connected to the upper and lower ends of the pipe body, respectively. Both the upper and lower steel plates are annular and are set corresponding to the hollow pipe body. A fixing steel plate is fixedly connected to the lower end of the lower steel plate. The lower steel plate has several screw holes, and the fixing steel plate has several screws that are vertically passed through and threaded into the screw holes. Several gears are rotatably connected to the lower steel plate and the fixing steel plate in a circular distribution. A stud is fixedly connected to the gear and extends out of the fixing steel plate. A gear ring that meshes with all the gears is also rotatably connected between the upper steel plate and the lower steel plate. Several screw holes corresponding to the studs are set in the upper steel plate.

[0005] Furthermore, a convex ring is formed by protruding downwards at the lower outer edge of the fixed steel plate, and a corresponding circular protrusion is provided on the upper steel plate.

[0006] Furthermore, several sliding rods are slidably inserted into the side of the gear ring in a circular pattern, and several positioning holes corresponding to the sliding rods are provided in the lower steel plate. Initially, the sliding rods are inserted into the positioning holes.

[0007] Furthermore, the inner end of the slide rod is fixedly provided with a missing tooth section, and the part where the slide rod passes through the tooth ring is where its internal teeth are located. When the slide rod slides outward, the missing tooth section on it fills in the missing internal teeth at the point where the tooth ring is passed through.

[0008] Furthermore, a conical end cap is provided at the outer end of the sliding rod, and a drive rod is slidably connected in the positioning hole. The drive rod passes through the lower steel plate and extends out from the inner wall of the lower steel plate. The drive rod is connected to the sliding rod in the positioning hole on one side. A drive cone is slidably inserted in the pipe pile. The lower end of the drive cone is inverted cone shape, and a connecting rod is fixedly connected to the upper end of the drive cone. When the drive cone moves downward, it contacts the drive rod and pushes it to move.

[0009] Furthermore, the inner end portion of the drive rod is provided with an inclined surface corresponding to the drive cone.

[0010] Furthermore, the slide rod is hollow and has through grooves on both sides, which are connected to the cavity formed by the fixed steel plate and the lower steel plate. A limit plate is fixed to the outside of the gear ring at the through position of the slide rod. The limit plate has lugs on both sides, which are inserted into the through grooves. The end cap is threaded onto the slide rod. The slide rod also has a tubular part inside, with one end opening located at the end near the end cap and the other end opening located in the hollow cavity of the slide rod. The limit plate seals the opening of the slide rod cavity.

[0011] Furthermore, the limiting plate is provided with screws to fix it to the gear ring. The gear ring is provided with two sets of locking grooves arranged perpendicularly to each other. The locking grooves are corresponding to the plate ears. The gear ring is provided with a blocking protrusion. When the slide rod is inserted into the positioning hole and then rotated 90°, part of the through groove is blocked and closed by the positioning hole, and the other part is blocked and closed by the blocking protrusion. Several through holes are arranged in a circular pattern on the side of the end cap. The through holes are connected to the opening of the tubular part.

[0012] Furthermore, an inwardly recessed hole is provided on the outside of the limiting plate, and the through hole on the end cap is initially located in this recessed hole.

[0013] Beneficial effects:

[0014] 1. This invention provides a concrete pipe pile for building engineering. By using a sliding rod as a handle to push the gear ring to rotate, the stud will rotate and be screwed into the screw hole, thus completing the connection between the upper and lower pipe piles. This avoids the problem of insufficient connection due to welding quality. At the same time, concrete is injected into the gap between the fixing steel plate and the lower steel plate through the tubular part to fill the gap, thereby increasing the structural strength at the connection between the lower steel plate and the fixing steel plate of the pipe pile, making the connection between the two pipe piles more stable.

[0015] 2. This invention provides a concrete pipe pile for building engineering. By driving the cone body to connect to the driving rod, the sliding rod is inserted into the soil layer, thereby enhancing the pull-out resistance of the pipe pile. At the same time, when the sliding rod moves outward, the concrete squeezed into its inner cavity flows out from the through hole, allowing the concrete to seep into the soil layer around the sliding rod, thereby reinforcing the soil layer and strengthening the connection strength between the sliding rod and the soil layer, thus enhancing the pull-out resistance of the pipe pile. Attached image description:

[0016] Figure 1 This is a schematic front sectional view of the connection between the two pipe piles of the present invention.

[0017] Figure 2 This is a bottom sectional view of the toothed ring of the present invention.

[0018] Figure 3 For the present invention Figure 2 Enlarged diagram of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the cooperation between the slide bar and the reversing plate of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the missing tooth portion of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the limiting plate after the plate lugs are reversed in this invention.

[0022] Figure 1-6 In the middle: 1-reinforcing cage, 2-pipe body, 3-lower steel plate, 4-upper steel plate, 5-screw hole one, 6-stud, 7-gear, 8-gear ring, 801-clamping groove, 802-shielding protrusion, 9-fixing steel plate, 901-convex ring, 10-end cap, 11-sliding rod, 111-tubular part, 112-through groove, 12-drive rod, 121-inclined surface, 13-drive cone, 14-screw hole two, 15-through hole, 16-reversing plate, 16-plate ear, 17-toothed part, 18-connecting rod, 19-positioning hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] As attached Figure 1 - Appendix Figure 6As shown, a concrete pipe pile for building construction includes a pipe body 2 made of concrete, with a reinforcing cage 1 embedded inside. An upper steel plate 4 and a lower steel plate 3 are fixedly connected to the upper and lower ends of the reinforcing cage 1, respectively. The upper steel plate 4 and lower steel plate 3 are fixedly connected to the upper and lower ends of the pipe body 2, respectively, and both the upper steel plate 4 and lower steel plate 3 are annular, corresponding to the hollow pipe body 2. A fixing steel plate 9 is fixedly connected to the lower end of the lower steel plate 3. The lower steel plate 3 has several screw holes 14, and the fixing steel plate 9 has several screws that vertically penetrate and threaded into the screw holes 14. The fixing steel plate 9 can be fixedly installed on the lower steel plate 3 using the screws. Several gears 7 are rotatably connected between the lower steel plate 3 and the fixing steel plate 9, and the gears 7 are circumferentially distributed between the lower steel plate 3 and the fixing steel plate 9. Between the gears 7 and 9, a stud 6 is fixedly connected to the gear 7. The stud 6 extends out of the fixed steel plate 9. Specifically, the stud 6 and the gear 7 can be integrally connected. A gear ring 8 is also rotatably connected between the upper steel plate 4 and the lower steel plate 3. The gear ring 8 meshes with all the gears 7. The rotation of the gear ring 8 can drive the gears 7 to rotate, which in turn drives the corresponding stud 6 to rotate. Several screw holes 5 are provided in the upper steel plate 4, and the screw holes 5 are corresponding to the stud 6. By rotating the gear ring 8 below the upper pipe pile to be connected, the upper stud 6 can be driven to rotate. After aligning the stud 6 with the screw hole 5, all the studs 6 can be screwed into the corresponding screw hole 5 together, thereby realizing the rapid connection between the upper pipe pile and the lower pipe pile. At the same time, the bolt connection can avoid the problem of cracking caused by uneven welding quality.

[0025] Among them, as attached Figure 1 As shown, the lower outer edge of the fixed steel plate 9 protrudes downward to form a convex ring 901, and the upper steel plate 4 is provided with a corresponding circular protrusion. Through the docking of the convex ring 901, the upper and lower pipe piles can be aligned in the center.

[0026] Among them, as attached Figure 1 To be continued Figure 4 As shown, several sliding rods 11 are slidably inserted into the side of the gear ring 8 in a circular pattern. The lower steel plate 3 has several positioning holes 19 corresponding to the sliding rods 11. Initially, the sliding rods 11 are inserted into the positioning holes 19. When it is necessary to connect the two pipe piles, the sliding rods 11 are pulled out. At this time, the sliding rods 11 can be used as push rods to facilitate the rotation of the gear ring 8. When the stud 6 is connected into the screw hole 5, the sliding rods 11 are inserted into the positioning holes 19 to prevent the gear ring 8 from rotating, so that the threaded connection between the two pipe piles does not become loose.

[0027] Among them, as attached Figure 3 To be continued Figure 4As shown, the slide rod 11 has a missing tooth portion 17 fixedly provided at its inner end. The part of the slide rod 11 that passes through the gear ring 8 is where its internal teeth are located. When the slide rod 11 slides outward, the missing tooth portion 17 inside it fills the missing internal teeth at the point where the gear ring 8 is passed through. This allows the diameter of the slide rod 11 to be set large enough without affecting the rotation of the gear ring 8 to drive the gear 7, thereby making the slide rod 11 stronger.

[0028] Among them, as attached Figure 1 To be continued Figure 4 As shown, the outer end of the sliding rod 11 is provided with an end cap 10, which can be set as a cone or a pyramid shape. A driving rod 12 is also slidably connected in the positioning hole 19. The driving rod 12 passes through the lower steel plate 3 and extends out from the inner wall of the lower steel plate 3. The driving rod 12 is connected to the sliding rod 11 in the positioning hole 19 on one side. A driving cone 13 is slidably inserted into the pipe pile. The lower end of the driving cone 13 is inverted cone shape, and the upper end of the driving cone 13 is fixedly connected to a connecting rod 18. The driving cone 13 is extended into the hollow pipe 2 through the connecting rod 18. When the driving cone 13 moves downward, it contacts the driving rod 12, which can drive the driving rod 12 to move and then push against the sliding rod 11, inserting it into the soil, thereby improving the pull-out resistance of the pipe pile.

[0029] Preferred options are listed below. Figure 1 To be continued Figure 4 As shown, the inner end of the drive rod 12 is provided with an inclined surface 121, which is correspondingly provided with the drive cone 13, thereby enabling the drive cone 13 to better drive the drive rod 12 to move.

[0030] Among them, as attached Figure 1 To be continued Figure 5 As shown, the slide rod 11 is hollow, and through slots 112 are provided on both sides of the slide rod 11. A limiting plate 16 is fixed to the outer side of the gear ring 8 at the through position of the slide rod 11. The limiting plate 16 has lugs 161 on both sides, which are inserted into the through slots 112. The end cap 10 can be threaded onto the slide rod 11. The through slots 112 can restrict the movement of the slide rod 11. The slide rod 11 also has a tubular part 111. One end of the tubular part 111 is open at the end near the end cap 10, and the other end is open in the hollow cavity of the slide rod 11. The limiting plate 16 seals the cavity opening of the slide rod 11; after the two pipe piles are connected, the slide rod 11 is inserted into the positioning hole 19, and then the end cap 10 is removed. Concrete can then be added into the cavity of the slide rod 11 through the tubular part 111. The concrete then seeps into the space between the gear 7 and the gear ring 8 through the through groove 112, thereby strengthening the structural strength between the lower steel plate 3 and the fixed steel plate 9. A retarder can be added to the concrete to slow down the setting speed, so that the concrete will only begin to set after the pile driving is completed and the slide rod 11 is pushed outward.

[0031] Among them, as attached Figure 5 To be continued Figure 6 As shown, the limiting plate 16 is fixed to the gear ring 8 with screws. The gear ring 8 has two sets of perpendicularly arranged snap-fit ​​grooves 801, which correspond to the lugs 161. By removing the screws and rotating the limiting plate 16, the slide rod 11 can be rotated 90°. The gear ring 8 has a blocking protrusion 802. When the slide rod 11 is inserted into the positioning hole 19 and then rotated 90°, part of the through groove 112 is blocked and closed by the positioning hole 19, and the other part is closed by the blocking protrusion 802. The end cap 10 has several through holes 15 arranged circumferentially on its side. The through holes 15 are connected to the opening of the tubular part 111. After the inner cavity of the slide rod 11 is filled with concrete, After rotating the sliding rod 11, the cavity inside the sliding rod 11 is sealed. After the pipe pile is driven, the driving cone 13 drives the driving rod 12 to move, which in turn drives the sliding rod 11 to move. This causes the concrete inside the sliding rod 11 to be squeezed out from the tubular part 111. As the sliding rod 11 moves outward, the concrete flows out from the through hole 15 and seeps into the soil layer around the sliding rod 11, which can solidify the soil layer around the sliding rod 11 and thus enhance the pull-out resistance of the pipe pile. Preferably, an inwardly recessed hole can be provided on the outside of the limiting plate 16. The through hole 15 on the end cap 10 is initially located in the recessed hole, which makes it less likely for the through hole 15 to be blocked during the pipe pile driving process.

[0032] Working principle:

[0033] Align the bottom of the upper pipe pile with the top of the lower pipe pile, then pull out all the sliding rods 11. Use the sliding rods 11 as handles to push the gear ring 8 to rotate, thereby rotating the stud 6 and screwing it into the screw hole 5, thus completing the connection between the upper and lower pipe piles. Then push the sliding rods 11 into the positioning hole 19, remove the end cap 10, and pour concrete through the tubular part 111, allowing the concrete to enter the cavity inside the sliding rod 11. The concrete then seeps through the through groove 112 into the space between the fixing steel plate 9 and the lower steel plate 3, filling the gap and increasing the structural strength of the lower steel plate 3, thereby strengthening the connection between the two pipe piles. After pouring the concrete, remove the screws on the limiting plate 16. After rotating the limiting plate 16 90°, it is re-fixed onto the toothed ring 8. At this time, the limiting groove on the sliding rod 11 is closed and covered by the positioning hole 19 and the blocking protrusion 802. The end cap 10 is re-fixed onto the sliding rod 11. Then, the pipe pile is driven into the soil. After the pile driving is completed, the driving cone 13 is inserted into the cavity in the pipe body 2 through the connecting rod 18, and then pushes and drives the driving rod 12 to move, so that the sliding rod 11 is driven outward into the soil, thereby increasing the pull-out resistance of the pipe pile. At the same time, when the sliding rod 11 moves outward, the concrete in the cavity of the sliding rod 11 is squeezed out from the through hole 15 and seeps into the surrounding soil, hardening the soil around the sliding rod 11, thereby better strengthening the pull-out resistance of the pipe pile.

Claims

1. A concrete pipe pile for building construction, comprising a pipe body (2), wherein a reinforcing cage (1) is embedded within the pipe body (2), and an upper steel plate (4) and a lower steel plate (3) are respectively fixedly connected to the upper and lower ends of the reinforcing cage (1), and the upper steel plate (4) and the lower steel plate (3) are respectively fixedly connected to the upper and lower ends of the pipe body (2), wherein the upper steel plate (4) and the lower steel plate (3) are both annular and are correspondingly arranged to the hollow pipe body (2), characterized in that, The lower steel plate (3) is fixedly connected to a fixed steel plate (9) at its lower end. The lower steel plate (3) is provided with several screw holes (14). The fixed steel plate (9) is provided with several screws that vertically penetrate the screw holes (14) and the screws are threaded into the screw holes (14). Several gears (7) are rotatably connected to the lower steel plate (3) and the fixed steel plate (9) in a circular distribution. A stud is fixedly connected to the gear (7) and the stud penetrates the fixed steel plate (9) and extends out of it. A gear ring (8) that meshes with all the gears (7) is also rotatably connected between the upper steel plate (4) and the lower steel plate (3). Several screw holes (5) corresponding to the studs are provided in the upper steel plate (4).

2. The concrete pipe pile for building engineering according to claim 1, characterized in that, The lower outer edge of the fixed steel plate (9) protrudes downward to form a convex ring (901), and the upper steel plate (4) is provided with a corresponding circular protrusion.

3. A concrete pipe pile for building engineering according to claim 1, characterized in that, The toothed ring (8) has several sliding rods (11) slidably inserted into its side in a circular pattern. The lower steel plate (3) has several positioning holes (19) corresponding to the sliding rods (11). Initially, the sliding rods (11) are inserted into the positioning holes (19).

4. A concrete pipe pile for building engineering according to claim 3, characterized in that, The slide rod (11) has a missing tooth part (17) fixed on its inner end. The part where the slide rod (11) passes through the tooth ring (8) is where its internal tooth is located. When the slide rod (11) slides outward, the missing tooth part (17) on it fills the missing internal tooth at the point where the tooth ring (8) is passed through.

5. A concrete pipe pile for building engineering according to claim 4, characterized in that, The outer end of the slide rod (11) is provided with a conical end cap (10). A drive rod (12) is slidably connected in the positioning hole (19). The drive rod (12) passes through the lower steel plate (3) and extends out from the inner wall of the lower steel plate (3). The drive rod (12) is connected to the slide rod (11) on one side of the positioning hole (19) on the other side of the positioning hole (19). A drive cone (13) is slidably inserted in the pipe pile. The lower end of the drive cone (13) is inverted cone shape, and a connecting rod (18) is fixedly connected to the upper end of the drive cone (13). When the drive cone (13) moves downward, it contacts the drive rod (12) and pushes it to move.

6. A concrete pipe pile for building engineering according to claim 5, characterized in that, The inner end portion of the drive rod (12) is provided with an inclined surface (121) corresponding to the drive cone (13).

7. A concrete pipe pile for building engineering according to claim 5, characterized in that, The slide rod (11) is hollow and has through grooves (112) on both sides. The through grooves (112) are connected to the cavity formed by the fixed steel plate (9) and the lower steel plate (3). The toothed ring (8) is fixed to a limiting plate (16) at the through position of the slide rod (11). The limiting plate (16) has lugs (161) on both sides. The lugs (161) are inserted into the through groove (112). The end cap (10) is threaded onto the slide rod (11). The slide rod (11) also has a tubular part (111). One end of the tubular part (111) is open at the end near the end cap (10), and the other end is open in the hollow cavity of the slide rod (11). The limiting plate (16) seals the opening of the cavity of the slide rod (11).

8. A concrete pipe pile for building engineering according to claim 5, characterized in that, The limiting plate (16) is provided with screws to fix it to the gear ring (8). The gear ring (8) is provided with two sets of snap-fit ​​grooves (801) arranged perpendicularly. The snap-fit ​​grooves (801) are corresponding to the plate ears (161). The gear ring (8) is provided with a blocking protrusion (802). When the slide rod (11) is inserted into the positioning hole (19) and then rotated 90°, part of the through groove (112) is blocked and closed by the positioning hole (19), and the other part is closed by the blocking protrusion (802). The end cap (10) is provided with several through holes (15) arranged in a circular pattern on its side. The through holes (15) are connected to the opening of the tubular part (111).

9. A concrete pipe pile for building engineering according to claim 5, characterized in that, An inwardly recessed hole is provided on the outside of the limiting plate (16), and the through hole (15) on the end cap (10) is initially located in the recessed hole.

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