Construction method of stiff composite pile

Abstract

The invention provides a construction method of a stiff composite pile, and relates to the field of building construction. The method comprises the following steps: S1, measuring and positioning, and excavating a pile hole; s2, the lowering mechanism is fixed to the ground at the pile hole; s3, the crane is used for hoisting the single-section reinforcement cage to the lowering mechanism, and the lowering mechanism is used for bearing the reinforcement cage; s4, the next section of reinforcement cage is hoisted to the lowering mechanism through the crane and spliced with the previous section of reinforcement cage through a connecting assembly; after splicing, the two sections of spliced reinforcement cages are lowered by a certain distance through a lowering mechanism; s5, the step S4 is repeated until each section of reinforcement cage is spliced, and the reinforcement cage is lowered into the pile hole; s6, the tubular piles are gradually lowered into the pile holes through a crane; and S7, concrete is poured into the pipe pile and the position between the pipe pile and the inner wall of the pile hole, and construction of the composite pile is completed. The pile foundation has the effect of improving the pile foundation strength.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a construction method of a rigid composite pile. Background Art

[0002] Reinforced composite piles are an advanced pile foundation technology that combines the advantages of different materials and construction methods to form a pile body with high strength, high stability and excellent bearing performance. Reinforced composite piles are usually composed of materials such as steel bars, high-strength concrete, prestressed steel strands and high-strength steel pipes.

[0003] The rigid composite piles have a significantly improved bearing capacity, and due to the use of high-strength materials and optimized structural design, they also perform well in terms of earthquake resistance and stability. In addition, the rigid composite piles can effectively reduce the risk of foundation settlement and soil damage.

[0004] At present, during the construction of reinforced composite piles, one of the construction steps is to use a crane to lift the steel cage and lower it into the pile hole.

[0005] However, due to the great depth of the pile hole, it is difficult to lower a steel cage having the same length as the depth of the pile hole into the pile hole at one time, so the steel cage is generally lowered into the pile hole in sections and multiple times; in this way, when each section of the steel cage is placed in the pile hole, each section of the steel cage is prone to misalignment, that is, it is not easy to be on the same axis, which is easy to affect the strength after pouring concrete. Summary of the invention

[0006] In order to improve the problems existing in the above-mentioned technology, the present application provides a construction method of a rigid composite pile.

[0007] The present application provides a construction method of a rigid composite pile, which adopts the following technical solution: A construction method for a rigid composite pile comprises the following steps: S1: measurement, positioning and excavation of pile holes; S2: Fix the lowering mechanism on the ground at the pile hole; S3: Use a crane to lift the single-section steel cage to the lowering mechanism, and the lowering mechanism receives the steel cage; S4: Use a crane to lift the rear section of the steel cage to the lowering mechanism, and splice it with the front section of the steel cage through a connecting assembly; after splicing, use the lowering mechanism to lower the two spliced ​​steel cages a certain distance; S5: Repeat step S4 until each section of the steel cage is spliced ​​and lowered into the pile hole; S6: Use a crane to lower each section of the pipe pile into the pile hole one by one; S7: Concrete is poured into the pipe pile and between the pipe pile and the inner wall of the pile hole, thus completing the construction of the composite pile.

[0008] By adopting the above technical solution, when lowering the steel cage, each section of the steel cage is not easily misaligned and can all remain coaxial with the pile hole, so that after pouring concrete, the strength is not easily affected.

[0009] Optionally, the lowering mechanism includes: a receiving assembly, a supporting assembly and a flipping assembly, the receiving assembly is placed on the ground, the supporting assembly is arranged on the receiving assembly, and the flipping assembly is arranged on the supporting assembly.

[0010] By adopting the above technical solution, the lowering mechanism can limit the lowering of the steel cage, thereby ensuring that each section of the steel cage is not easily misaligned.

[0011] Optionally, the receiving assembly includes: a receiving seat and an anchoring nail, the receiving seat is placed on the ground, one end of the anchoring nail is fixed to the receiving seat and the other end is inserted into the ground, a lowering hole is opened through the receiving seat, and the supporting assembly is arranged on the receiving seat.

[0012] By adopting the above technical solution, during construction, the receiving seat will be moved to the pile hole, and ensure that the lowering hole is coaxial with the pile hole; at the same time, the anchor nail will be inserted into the foundation, thereby improving the stability of the receiving seat, so that the receiving seat is not easy to move.

[0013] Optionally, the support assembly includes: a hydraulic cylinder, a support rod and a support plate, the inner wall of the lowering hole is provided with a mounting hole, the hydraulic cylinder is installed in the mounting hole, and the output end of the hydraulic cylinder is connected to the support plate, the inner wall of the lowering hole is provided with a support hole, one end of the support rod is telescoped in the support hole, and the other end is connected to the support plate, and a limiting groove is provided on the support plate, the steel cage is composed of annular steel bars and vertical steel bars, the annular steel bars are fixedly mounted on the vertical steel bars, the vertical steel bars pass through the limiting groove, and the support plate is in contact with the annular steel bars, and the flipping assembly is arranged on the support plate.

[0014] By adopting the above technical solution, when lowering the steel cage, the hydraulic cylinder is started to push the support plate to move until the vertical steel bars can be inserted into the limiting grooves, thereby limiting the vertical steel bars to ensure that the steel cage can be lowered coaxially with the pile hole without being easily skewed, thereby improving the strength.

[0015] Optionally, the flipping assembly includes: a flipping part and a locking part, the flipping part includes: a fixed plate, a rotating rod and a torsion spring, the fixed plate is fixedly connected to the output end of the hydraulic cylinder, a accommodating hole is provided on the fixed plate, one end of the rotating rod is rotatably installed in the accommodating hole, and the other end is fixedly connected to the support plate, the torsion spring is sleeved on the rotating rod and one end is fixed to the inner wall of the accommodating hole, and the other end is fixed to the rotating rod, the locking part is arranged between the fixed plate and the rotating rod, and the end of the support rod away from the receiving seat is fixed to the fixed plate.

[0016] By adopting the above technical solution, during the lowering of the steel cage, the support plate will be blocked by the annular steel bars; at this time, the steel cage can continue to be lowered, and the support plate can be flipped downward until it passes through the annular steel bars, and the torsion spring drives the support plate to quickly reset to continue to limit the vertical steel bars.

[0017] Optionally, the locking part includes: an iron rod, an electromagnet and a return spring, the fixed plate is provided with a seating hole, the rotating rod is provided with a locking hole, one end of the iron rod is arranged in the seating hole, and the other end extends through the locking hole, the return spring is sleeved on the iron rod and one end is fixed to the bottom of the connecting hole, and the other end is fixed to the iron rod, and the electromagnet is installed in the seating hole.

[0018] By adopting the above technical solution, when the support plate needs to be flipped, the electromagnet is started to magnetically attract the iron rod, so that the iron rod can be disengaged from the locking hole to allow the rotating rod to rotate.

[0019] Optionally, the connecting assembly includes: a connecting tube, which is sleeved between two adjacent vertical steel bars in the vertical direction, and the inner wall of the connecting tube is provided with a plurality of protrusions.

[0020] By adopting the above technical solution, when connecting, the connecting tube is hammered onto the vertical steel bars, and the friction between the protrusions and the vertical steel bars is used to connect each section of the steel cage.

[0021] Optionally, a reinforcement component is provided between the pipe pile and the vertical steel bar, and the reinforcement component includes: a positioning portion and a reinforcement portion, the positioning portion is provided between the pipe pile and the vertical steel bar, and the reinforcement portion is provided between the pipe pile and the connecting tube.

[0022] By adopting the above technical solution, the reinforcement component is used to improve the strength between the steel cage and the pipe pile, so that after pouring concrete, the strength of the overall pile foundation is higher.

[0023] Optionally, the positioning portion includes: a positioning rod, one end of which is fixed to the pipe pile, and the other end of which is provided with a positioning groove, and the vertical steel bar passes through the positioning groove.

[0024] By adopting the above technical solution, when lowering the pipe pile, the positioning groove on the positioning rod is aligned with the vertical steel bar until the vertical steel bar passes through the positioning groove, so that the pipe pile can slide down along the vertical steel bar to ensure that the pipe pile is coaxial with the pile hole.

[0025] Optionally, the reinforcement part includes: a fixing rod, a reinforcement rod, an anti-drop rod and a pushing spring, the fixing rod is fixed to the pipe pile, and a sliding hole is provided on the fixing rod, a through hole is provided on the connecting tube, one end of the reinforcement rod is arranged in the sliding hole, and the other end is provided with the through hole, the reinforcement rod is provided with an anti-drop hole, the anti-drop rod is arranged in the anti-drop hole, the pushing spring is fixed between the anti-drop rod and the bottom of the anti-drop hole, a slurry hole is provided on the pipe pile, and the slurry hole is communicated with the sliding hole.

[0026] By adopting the above technical solution, when pouring concrete, the concrete will flow into the sliding hole through the slurry hole to squeeze and push the reinforcing rod to be inserted into the connecting tube.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. When lowering the steel cage, each section of the steel cage is not likely to be misaligned and can remain coaxial with the pile hole, so that after pouring concrete, it is not likely to affect the strength.

[0028] 2. When lowering the steel cage, start the hydraulic cylinder to push the support plate to move until the vertical steel bars can be inserted into the limiting grooves, thereby limiting the vertical steel bars to ensure that the steel cage can be lowered coaxially with the pile hole without being skewed, thereby improving strength.

[0029] 3. During the lowering of the steel cage, the support plate will be blocked by the annular steel bars. At this time, the steel cage can continue to be lowered, and the support plate can be flipped downward until it passes through the annular steel bars. The torsion spring drives the support plate to quickly reset to continue to limit the vertical steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram according to an embodiment of the present application; Figure 2 yes Figure 1 A schematic top view of Figure 3 is along Figure 2 A schematic cross-sectional view taken along the cutting line AA in FIG. Figure 4 yes Figure 1 A schematic front view of Figure 5 is along Figure 4 A schematic cross-sectional view taken along the cutting line BB in FIG. Figure 6 yes Figure 5 A schematic partial enlarged view of section C; Figure 7 yes Figure 3 Schematic partial enlarged view of part D in the figure.

[0031] In the figure: 1, steel cage; 11, annular steel bar; 12, vertical steel bar; 2, pipe pile; 21, grouting hole; 3, receiving assembly; 31, receiving seat; 311, lowering hole; 312, mounting hole; 313, supporting hole; 32, anchor nail; 4, supporting assembly; 41, hydraulic cylinder; 42, supporting rod; 43, supporting plate; 431, limiting groove; 5, turning part; 51, fixing plate; 511, receiving hole; 512, placement hole; 5 2. Rotating rod; 521. Locking hole; 53. Torsion spring; 6. Locking part; 61. Iron rod; 62. Electromagnet; 63. Return spring; 7. Connecting assembly; 71. Connecting tube; 711. Protrusion; 712. Through hole; 8. Positioning part; 81. Positioning rod; 811. Positioning groove; 9. Reinforcing part; 91. Fixing rod; 911. Sliding hole; 92. Reinforcing rod; 921. Anti-drop hole; 93. Anti-drop rod; 94. Push spring. DETAILED DESCRIPTION

[0032] The present application provides a construction method for a rigid composite pile.

[0033] A construction method for a rigid composite pile comprises the following steps: S1: measurement, positioning and excavation of pile holes; S2: Fix the lowering mechanism on the ground at the pile hole; S3: Using a crane to lift the single-segment steel cage 1 to the lowering mechanism, and the lowering mechanism receives the steel cage 1; S4: Use a crane to lift the rear section of the steel cage 1 to the lowering mechanism, and splice it with the front section of the steel cage 1 through the connecting assembly 7; after splicing, use the lowering mechanism to lower the two spliced ​​steel cages 1 a certain distance; S5: Repeat step S4 until each section of the steel cage 1 is spliced ​​and lowered into the pile hole; S6: Use a crane to lower each section of the pipe pile 2 into the pile hole one by one; S7: pouring concrete into the pipe pile 2 and between the pipe pile 2 and the inner wall of the pile hole, thus completing the construction of the composite pile.

[0034] See also Figure 1 The lowering mechanism includes: a receiving component 3, a supporting component 4 and a flipping component.

[0035] See also Figure 2 and Figure 3The receiving assembly 3 includes: a receiving seat 31 and an anchoring nail 32. The top wall of the receiving seat 31 is penetrated with a lowering hole 311, and the lowering hole 311 is used to lower the steel cage 1 and the pipe pile 2. The anchoring nail 32 is fixed on the bottom wall of the receiving seat 31. During construction, the receiving seat 31 is moved to the pile hole, and the lowering hole 311 is ensured to be coaxial with the pile hole; at the same time, the anchoring nail 32 will be inserted into the foundation, thereby improving the stability of the receiving seat 31, so that the receiving seat 31 is not easy to move.

[0036] See also Figure 4 and Figure 5 The support assembly 4 includes: a hydraulic cylinder 41, a support rod 42 and a support plate 43. In this embodiment, the steel cage 1 is composed of annular steel bars 11 and vertical steel bars 12. Eight vertical steel bars 12 are provided and are evenly distributed along the circumferential direction of the annular steel bars 11; three annular steel bars 11 are provided and are fixedly sleeved on the vertical steel bars 12 and evenly distributed along the length direction of the vertical steel bars 12.

[0037] The inner wall of the lowering hole 311 is provided with a mounting hole 312 . In this embodiment, there are four mounting holes 312 , which are evenly distributed along the circumference of the lowering hole 311 . The hydraulic cylinder 41 is installed in the mounting hole 312 , and the output end of the hydraulic cylinder 41 is connected to the support plate 43 . A limiting groove 431 is provided at one end of the support plate 43 away from the hydraulic cylinder 41, and the vertical steel bar 12 is penetrated by the limiting groove 431. When it is necessary to lower the steel cage 1, the hydraulic cylinder 41 is started to push the support plate 43 to move until the vertical steel bar 12 can be inserted into the limiting groove 431, thereby limiting the vertical steel bar 12 to ensure that the steel cage 1 can be lowered coaxially with the pile hole without being easily skewed, thereby improving the strength; when lowering each subsequent section of the steel cage 1, it is first connected to the previous section of the steel cage 1, and then the vertical steel bars 12 of each subsequent section of the steel cage 1 will be automatically inserted into the limiting groove 431, thereby ensuring that after all the steel cages 1 are lowered, each section of the steel cage 1 is not easily misaligned and can all remain coaxial with the pile hole.

[0038] See also Figure 5 A support hole 313 is provided on the inner wall of the lowering hole 311, one end of the support rod 42 is telescoped into the support hole 313, and the other end is connected to the support plate 43. The support rod 42 is used to improve the support strength of the support plate 43 on the steel cage 1, so that the support plate 43 and the hydraulic cylinder 41 are not prone to breakage.

[0039] See also Figure 6 The flip assembly includes: a flip part 5 and a locking part 6.

[0040] See also Figure 6The flip part 5 includes: a fixed plate 51, a rotating rod 52 and a torsion spring 53. The fixed plate 51 is fixedly connected to the output end of the hydraulic cylinder 41. In this embodiment, the fixed plate 51 is in a "U" shape. The inner side wall of the fixed plate 51 is provided with a receiving hole 511. One end of the rotating rod 52 is fixedly connected to the support plate 43, and the other end is rotatably installed in the receiving hole 511. The torsion spring 53 is sleeved on one end of the rotating rod 52 located in the receiving hole 511, and one end of the torsion spring 53 is fixed to the rotating rod 52, and the other end is fixed to the inner wall of the receiving hole 511. The torsion spring 53 is mainly used to reset the support plate 43.

[0041] See also Figure 6 During the lowering process of the steel cage 1, the support plate 43 will be blocked by the annular steel bar 11; at this time, the steel cage 1 can continue to be lowered, and the support plate 43 can be flipped downward until it passes through the annular steel bar 11, and the torsion spring 53 drives the support plate 43 to quickly reset to continue to limit the vertical steel bar 12.

[0042] See also Figure 6 The locking part 6 includes: an iron rod 61, an electromagnet 62 and a return spring 63. A placement hole 512 is opened on the outer wall of the fixed plate 51, and a locking hole 521 is opened on the end wall of the rotating rod 52 away from the support plate 43; one end of the iron rod 61 is arranged in the placement hole 512, and the other end passes through the accommodating hole 511 and extends into the locking hole 521. In this embodiment, the iron rod 61 is square, and the locking hole 521 is also square. The locking rod can lock the rotating rod 52 so that the rotating rod 52 cannot rotate, so that when each two sections of the steel cage 1 are connected, the support plate 43 can support the previous section of the steel cage 1 so that the two sections of the steel cage 1 can be connected.

[0043] See also Figure 6 The electromagnet 62 is fixed in the placement hole 512. When the support plate 43 needs to be turned over, the electromagnet 62 is started to magnetically attract the iron rod 61, so that the iron rod 61 can be separated from the locking hole 521, so that the rotating rod 52 can rotate. One end of the reset spring 63 is fixed to the iron rod 61, and the other end is fixed to the bottom of the placement hole 512. When locking is required, the electromagnet 62 is turned off, and the reset spring 63 resets the iron rod 61, so that the iron rod 61 can be inserted into the locking hole 521 again to lock the rotating rod 52.

[0044] See also Figure 7The connection assembly 7 includes: a connection tube 71, which is sleeved between two adjacent vertical steel bars 12 in the vertical direction. In this embodiment, only two connection tubes 71 are provided between each two sections of the steel cage 1, and the two connection tubes 71 correspond to any two vertical steel bars 12 of the remaining vertical steel bars 12 that do not correspond to the support plate 43. The inner wall of the connection tube 71 is provided with a plurality of protrusions 711, and the vertical steel bars 12 are tightly pressed against the protrusions 711. When connecting, the connection tube 71 is hammered onto the vertical steel bars 12, and the friction between the protrusions 711 and the vertical steel bars 12 is used to connect each section of the steel cage 1.

[0045] See also Figure 2 and Figure 7 Furthermore, a reinforcement component is provided between the pipe pile 2 and the vertical steel bar 12, and the reinforcement component is used to improve the strength between the steel cage 1 and the pipe pile 2, so that after pouring concrete, the strength of the overall pile foundation is higher.

[0046] See also Figure 2 and Figure 7 The reinforcement component includes: a positioning part 8 and a reinforcement part 9.

[0047] See also Figure 2 The positioning part 8 includes: a positioning rod 81. In this embodiment, each pipe pile 2 is provided with two positioning rods 81, and the two positioning rods 81 correspond to the vertical steel bars 12 that do not correspond to the support plate 43 and the connecting tube 71; one end of the positioning rod 81 is fixedly connected to the pipe pile 2, and the other end is provided with a positioning groove 811, and the vertical steel bar 12 penetrates the positioning groove 811. When the pipe pile 2 is lowered, the positioning groove 811 on the positioning rod 81 is aligned with the vertical steel bar 12 until the vertical steel bar 12 penetrates the positioning groove 811, so that the pipe pile 2 can slide down along the vertical steel bar 12 to ensure that the pipe pile 2 is coaxial with the pile hole.

[0048] See also Figure 7 The reinforcement part 9 includes: a fixing rod 91, a reinforcement rod 92, an anti-slip rod 93 and a push spring 94. The fixing rod 91 is horizontally fixed on the outer wall of the pipe pile 2, and a sliding hole 911 is opened at one end of the fixing rod 91 away from the pipe pile 2, and a through hole 712 is opened through the side wall of the connecting tube 71; one end of the reinforcement rod 92 is arranged in the sliding hole 911, and the other end is penetrated by the through hole 712 and extends into the connecting tube 71. The reinforcement rod 92 is used for preliminary connection between the pipe pile 2 and the steel cage 1; in this embodiment, the reinforcement rod 92 is inserted into the connecting tube 71, which is explained by the construction state after pouring concrete. If concrete is not poured, the reinforcement rod 92 is completely located in the sliding hole 911.

[0049] See also Figure 7, one end of the reinforcing rod 92 located in the connecting tube 71 is provided with an anti-drop hole 921, one end of the anti-drop rod 93 is arranged in the anti-drop hole 921, and the other end extends out of the anti-drop hole 921 and abuts against the connecting tube 71, and the anti-drop rod 93 can prevent the reinforcing rod 92 from sliding back into the sliding hole 911, thereby enhancing the connection strength between the pipe pile 2 and the steel cage 1. The pushing spring 94 is fixed between the bottom of the anti-drop hole 921 and the anti-drop rod 93, and the pushing spring 94 is used to push the anti-drop rod 93 to extend out of the anti-drop hole 921. The inner side wall of the pipe pile 2 is provided with a grouting hole 21, and the grouting hole 21 is connected with the sliding hole 911. When pouring concrete, the concrete will flow into the sliding hole 911 through the grouting hole 21 to squeeze and push the reinforcing rod 92 to be inserted into the connecting tube 71.

[0050] The working principle of a construction method of a rigid composite pile of the present application when in use is as follows: when it is necessary to lower the steel cage 1, start the hydraulic cylinder 41 to push the support plate 43 to move until the vertical steel bar 12 can be inserted into the limiting groove 431, thereby limiting the vertical steel bar 12 to ensure that the steel cage 1 can be lowered coaxially with the pile hole without being easily skewed, thereby improving the strength; when lowering each subsequent section of the steel cage 1, it is first connected to the previous section of the steel cage 1, and then the vertical steel bars 12 of each subsequent section of the steel cage 1 will be automatically inserted into the limiting groove 431, thereby ensuring that after all the steel cages 1 are lowered, each section of the steel cage 1 is not easily misaligned and can all remain coaxial with the pile hole.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction method for a rigid composite pile, characterized in that: The following steps are involved: S1: measurement, positioning and excavation of pile holes; S2: Fix the lowering mechanism on the ground at the pile hole; S3: using a crane to lift the single-segment steel cage (1) to the lowering mechanism, and the lowering mechanism receives the steel cage (1); S4: using a crane to lift the rear section of the steel cage (1) to the lowering mechanism, and splicing it with the front section of the steel cage (1) through a connecting assembly (7); after splicing, using the lowering mechanism to lower the two spliced ​​steel cages (1) a certain distance; S5: Repeat step S4 until each section of the steel cage (1) is spliced ​​and lowered into the pile hole; S6: using a crane to gradually lower each section of the pipe pile (2) into the pile hole; S7: Concrete is poured into the pipe pile (2) and between the pipe pile (2) and the inner wall of the pile hole, thus completing the construction of the composite pile.

2. The construction method of the rigid composite pile according to claim 1, characterized in that: The lowering mechanism comprises: a receiving component (3), a supporting component (4) and a flipping component, wherein the receiving component (3) is placed on the ground, the supporting component (4) is arranged on the receiving component (3), and the flipping component is arranged on the supporting component (4).

3. The construction method of the rigid composite pile according to claim 2, characterized in that: The receiving assembly (3) comprises: a receiving seat (31) and an anchoring nail (32); the receiving seat (31) is placed on the ground; one end of the anchoring nail (32) is fixed to the receiving seat (31) and the other end is inserted into the ground; a lowering hole (311) is provided through the receiving seat (31); and the supporting assembly (4) is arranged on the receiving seat (31).

4. The construction method of the rigid composite pile according to claim 3, characterized in that: The support assembly (4) comprises: a hydraulic cylinder (41), a support rod (42) and a support plate (43); the inner wall of the lowering hole (311) is provided with a mounting hole (312); the hydraulic cylinder (41) is installed in the mounting hole (312); the output end of the hydraulic cylinder (41) is connected to the support plate (43); the inner wall of the lowering hole (311) is provided with a support hole (313); one end of the support rod (42) is telescopically disposed in the support hole (313); , the other end is connected to the support plate (43), and a limiting groove (431) is provided on the support plate (43), the steel cage (1) is composed of annular steel bars (11) and vertical steel bars (12), the annular steel bars (11) are fixedly sleeved on the vertical steel bars (12), the vertical steel bars (12) are passed through the limiting groove (431), and the support plate (43) is in contact with the annular steel bars (11), and the flip assembly is arranged on the support plate (43).

5. The construction method of the rigid composite pile according to claim 4, characterized in that: The flip assembly comprises: a flip part (5) and a locking part (6); the flip part (5) comprises: a fixing plate (51), a rotating rod (52) and a torsion spring (53); the fixing plate (51) is fixedly connected to the output end of the hydraulic cylinder (41); a receiving hole (511) is provided on the fixing plate (51); one end of the rotating rod (52) is rotatably installed in the receiving hole (511) and the other end is fixedly connected to the support plate (43); the torsion spring (53) is sleeved on the rotating rod (52) and one end is fixed to the inner wall of the receiving hole (511) and the other end is fixed to the rotating rod (52); the locking part (6) is arranged between the fixing plate (51) and the rotating rod (52); one end of the support rod (42) away from the receiving seat (31) is fixed to the fixing plate (51).

6. The construction method of the rigid composite pile according to claim 5, characterized in that: The locking part (6) comprises an iron rod (61), an electromagnet (62) and a return spring (63); a placement hole (512) is provided on the fixing plate (51); a locking hole (521) is provided on the rotating rod (52); one end of the iron rod (61) is arranged in the placement hole (512) and the other end extends through the locking hole (521); the return spring (63) is sleeved on the iron rod (61) and one end is fixed to the bottom of the connecting hole and the other end is fixed to the iron rod (61); the electromagnet (62) is installed in the placement hole (512).

7. The construction method of the rigid composite pile according to claim 4, characterized in that: The connection assembly (7) comprises: a connection tube (71), the connection tube (71) is sleeved between two adjacent vertical steel bars (12) in the vertical direction, and the inner wall of the connection tube (71) is provided with a plurality of protrusions (711).

8. The construction method of the rigid composite pile according to claim 7, characterized in that: A reinforcement component is provided between the pipe pile (2) and the vertical steel bar (12), and the reinforcement component comprises: a positioning portion (8) and a reinforcement portion (9), the positioning portion (8) being provided between the pipe pile (2) and the vertical steel bar (12), and the reinforcement portion (9) being provided between the pipe pile (2) and the connecting tube (71).

9. The construction method of the rigid composite pile according to claim 8, characterized in that: The positioning portion (8) comprises a positioning rod (81), one end of the positioning rod (81) is fixed to the pipe pile (2), and the other end is provided with a positioning groove (811), and the vertical steel bar (12) passes through the positioning groove (811).

10. The construction method of the rigid composite pile according to claim 9, characterized in that: The reinforcing part (9) comprises: a fixing rod (91), a reinforcing rod (92), an anti-slip rod (93) and a pushing spring (94); the fixing rod (91) is fixed on the pipe pile (2), and a sliding hole (911) is provided on the fixing rod (91); a through hole (712) is provided through the connecting tube (71); one end of the reinforcing rod (92) is arranged in the sliding hole (911), and the other end is provided with the through hole (712); an anti-slip hole (921) is provided on the reinforcing rod (92); the anti-slip rod (93) is arranged in the anti-slip hole (921); the pushing spring (94) is fixed between the anti-slip rod (93) and the bottom of the anti-slip hole (921); a grouting hole (21) is provided through the pipe pile (2), and the grouting hole (21) is connected with the sliding hole (911).

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