Pile integrated forming structure and construction method thereof

Abstract

The application relates to the field of bored pile construction, in particular to a pile column integrated forming structure and a construction method thereof. The pile column integrated forming structure comprises a steel casing installed on the ground, a bottom reinforcement cage is arranged in the steel casing, a top reinforcement cage is fixed at the top center position of the bottom reinforcement cage, clamping auxiliary parts for clamping the steel casing are arranged on opposite sides of the steel casing, mounting plates are fixedly arranged on the top of the clamping auxiliary parts and are arranged on the upper surface of the steel casing, two groups of mounting plates are mutually spliced and are provided with a giving circle hole at the splicing center position, a pouring hole for inserting a guide pipe is arranged on the surface of the mounting plate, the top reinforcement cage vertically penetrates through the giving circle hole, and two groups of column formworks which are mutually spliced and surround the top reinforcement cage are arranged on opposite sides of the mounting plate. The application has the advantages of shortening the construction period and improving the connection firmness between the piles and the columns.

Description

Technical Field

[0001] This application relates to the field of cast-in-place pile construction, and in particular to an integrated pile-column molding structure and its construction method. Background Technology

[0002] The integrated pile-column structure includes a concrete foundation pile at the bottom of the pile hole and a steel pipe column connected to the top of the concrete foundation pile.

[0003] In related technologies, the construction process of integrated pile and column structures generally adopts the following steps: First, concrete piles are poured, then the end face of the poured piles is roughened, and the column formwork is lowered so that the column formwork abuts against the roughened end face of the pile. Then, a guide pipe is inserted into the column formwork, and concrete is poured into the inside of the column formwork through the guide pipe to form the column.

[0004] However, in the above construction process, there is a certain time interval between the pouring of the piles and columns, and the concrete piles need to be roughened after they have fully passed the initial setting period. The overall construction cycle is long and the connection between the piles and columns is poor. Summary of the Invention

[0005] This application provides an integrated pile-column molding structure and its construction method in order to shorten the construction period and improve the connection strength between piles and columns.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] On one hand, this application provides an integrated pile-column molding structure, including a steel casing installed on the ground, a bottom reinforcing cage inside the steel casing, a top reinforcing cage fixed at the top center of the bottom reinforcing cage, clamping auxiliary components for clamping the steel casing on both sides of the steel casing, an mounting plate fixedly installed on the top of the clamping auxiliary components and placed on the upper surface of the steel casing, the two sets of mounting plates are spliced ​​together and a clearance hole is provided at the splicing center, a grouting hole for inserting a conduit is opened on the surface of the mounting plate, the top reinforcing cage vertically passes through the clearance hole, and two sets of column templates spliced ​​together and surrounding the top reinforcing cage are installed on both sides of the mounting plate.

[0008] By adopting the above scheme, before constructing the column, the top and bottom reinforcing cages are first fixedly connected, so that the column frame and the pile frame can be integrated. Before pouring concrete to form the column, clamping auxiliary components are used to clamp the steel casing to prevent the steel casing from shifting during concrete pouring, which would reduce the pouring quality. At the same time, the mounting plate on the top of the clamping auxiliary components provides an installation position for the top reinforcing cage, allowing it to pass through the clearance hole. Finally, the column formwork surrounds the top reinforcing cage to form a closed pouring space. In this application, the top reinforcing cage and column formwork can be directly installed before the bottom pile concrete solidifies. After installation, concrete can be poured into the column formwork. Since the pile concrete is not completely solidified, the pile and column can be connected as a whole during column pouring, improving the integrated forming quality of the pile and column. In addition, compared with the prior art, the top reinforcing cage and column formwork can be directly installed after the pile is poured, or even during the pile pouring process, thus greatly shortening the construction cycle.

[0009] Optionally, the cross-section of each set of column templates is semi-circular, and the two sets of column templates, when joined together, form a cylindrical structure that matches the top steel reinforcement cage.

[0010] Optionally, a through groove is provided on one side surface of the two sets of column templates facing each other, and a locking trigger is fixedly provided at the position where the edge of the round hole is directly opposite the through groove. A locking fitting is provided on the outer arc surface of the column template. When the two sets of column templates are connected, the locking trigger passes through the through groove and contacts the locking fitting, so as to drive the locking fitting to move and clamp the two sets of column templates.

[0011] Optionally, the locking trigger includes a trigger rod and a trigger cone. The trigger rod is vertically positioned and faces the through groove. The trigger rod is adapted to the through groove. The trigger cone is fixedly positioned on the side of the trigger rod facing the column template. The projection of the trigger cone on the horizontal plane is triangular, and the cone head of the trigger cone faces the center of the through groove.

[0012] Optionally, the locking fitting includes two sliders with opposite ends located on the extension line of the center of the through groove, a sliding rod fixed at one end opposite to the two sliders and with the same arc as the outer surface of the column template, and a connecting box fixed at the end of the sliding rod opposite to the slider. Two connecting boxes are provided, and the two connecting boxes are respectively staggered and fixed to the sliding rod ends corresponding to two different column templates. The sliders slide with the outer surface of the column template, and the surface of the two sliders facing each other is provided with an inclined surface that contacts the conical surface of the trigger cone.

[0013] Optionally, stop plates are fixedly provided on opposite sides of the trigger rod, and a stop groove adapted to the stop plate is opened on the surface of the column template. The stop groove is located on the side of the through groove facing the concave side of the column template, and the stop groove is connected to the through groove.

[0014] Optionally, a vertical plate is fixedly installed on the upper surface of the mobile vehicle body. The vertical plate is located outside the column template, and a threaded rod is threadedly connected to the vertical plate. The threaded rod passes horizontally through the vertical plate and is rotatably connected to the column template.

[0015] Optionally, a guide arc block is fixedly provided on the outer wall of the column template. The slide rod passes through the guide arc block and slides with the guide arc block. A return spring fixed to the slide rod is installed inside the guide arc block. When the return spring is in its original length state, the ends of the two sliders with inclined surfaces abut against each other.

[0016] Optionally, the auxiliary clamping component includes a movable vehicle body and an arc-shaped clamping plate, the arc-shaped clamping plate being fixed to one side of the movable vehicle body and used to press against the outer surface of the steel casing.

[0017] On the other hand, this application provides a construction method for an integrated pile-column molding structure, including the following construction steps:

[0018] S1. Install steel casing at the designated pit location, and carry out drilling and cleaning operations inside the steel casing. After cleaning, lower the bottom steel reinforcement cage inside the steel casing.

[0019] S2. Weld and fix the top steel cage at the center position above the bottom steel cage;

[0020] S3. Move the two sets of auxiliary clamping parts to the opposite sides of the steel casing and clamp the steel casing. Fix the mounting plate above the auxiliary clamping parts and use the clearance holes of the mounting plate to clamp the top steel cage for the first time.

[0021] S4. Insert the guide pipe into the grouting hole and extend it into the bottom of the steel casing to begin grouting concrete;

[0022] S5. At the same time, rotate the threaded rod to drive the two sets of column templates to approach and splice with each other. After the two sets of column templates are spliced ​​with each other, the locking trigger enters the through groove and drives the locking mating part to start, so that the end of the slide rod is inserted into the connecting box to complete the surrounding clamping of the column template.

[0023] S6. After the concrete inside the steel casing is poured, pour concrete into the column formwork before the concrete inside the steel casing initially sets, until the pouring operation is completed.

[0024] S7. After the pouring operation is completed, rotate the threaded rod in the opposite direction to move the two sets of column formwork away from each other, and complete the removal of the column formwork. Finally, remove the mounting plate and auxiliary clamping parts.

[0025] By adopting the above technical solution, the integrated pile-column construction process mainly includes two aspects: pile construction and column construction. Pile construction roughly includes steel casing installation, drilling, hole cleaning, lowering the bottom reinforcing cage, and concrete pouring. After the bottom reinforcing cage is lowered, the top reinforcing cage is welded to the center of the bottom reinforcing cage, so that the internal skeleton of the pile and column can be connected as one unit. Then, the top reinforcing cage is enclosed to provide pouring space. The enclosure of the top reinforcing cage mainly relies on the limitation of the clearance hole and the enclosure of the column formwork. Because the auxiliary clamping device clamps the steel casing and the column formwork is connected to the auxiliary clamping device through the installation plate, the pile and column can maintain their integrity during the pouring process. This construction process also makes full use of the cooperation between the locking trigger and locking mating parts, so that the joint of the column formwork can be clamped when the column formwork is brought close together and spliced, which greatly improves the stability of the column forming process and the final forming quality.

[0026] In summary, this application has the following technical effects:

[0027] 1. By directly pouring concrete columns before the concrete of the cast-in-place piles solidifies, and connecting the internal framework of the piles and columns into one, the connection at the joint of the piles and columns is tighter, and there is no need to wait for the piles to completely solidify before roughening the surface when constructing the columns, which greatly shortens the construction cycle.

[0028] 2. By using column formwork to enclose the top steel cage, and during the process of two column formworks approaching and connecting with each other, the locking trigger and locking mating parts cooperate with each other, so that the column formwork can be better locked, thereby improving the subsequent column forming quality;

[0029] 3. The auxiliary clamping parts, mounting plates and column templates can cooperate and promote each other, making the pile and column forming process more stable and stronger in integrity. Attached Figure Description

[0030] Figure 1 This is an overall schematic diagram of the integrated pile-column molding structure in the embodiments of this application;

[0031] Figure 2 This is a cross-sectional view of the integrated pile-column molding structure in the embodiments of this application;

[0032] Figure 3 This is a cross-sectional view of the integrated pile-column molding structure in the embodiments of this application, which aims to emphasize the mating of the locking trigger and the locking mating parts.

[0033] In the diagram, 1. Steel casing; 11. Bottom reinforcing cage; 2. Top reinforcing cage; 3. Clamping auxiliary component; 31. Moving vehicle body; 311. Anchor bolt; 32. Arc-shaped clamping plate; 321. Positioning bolt; 4. Mounting plate; 41. Clearance hole; 42. Vertical plate; 421. Threaded rod; 43. Restricting groove; 44. Grouting hole; 5. Column formwork; 51. Through groove; 52. Stop groove; 53. Guide arc block; 531. Arc-shaped through hole; 532. Mounting cavity; 54. Return spring; 55. Restricting slider; 6. Locking trigger; 61. Trigger rod; 611. Stop plate; 62. Trigger cone; 7. Locking mating component; 71. Slider; 711. Inclined surface; 72. Slide rod; 73. Connecting box. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the accompanying drawings.

[0035] Reference Figures 1 to 3 This application provides an integrated pile-column molding structure, including a steel casing 1, which is inserted at a designated location on the ground. A foundation pit is formed inside the steel casing 1 through drilling. The top of the steel casing 1 is 30-50cm above the ground. A bottom reinforcing cage 11 is placed inside the steel casing 1. A vertical top reinforcing cage 2 is fixedly installed at the upper center of the bottom reinforcing cage 11. Column templates 5 are installed on opposite sides of the top reinforcing cage 2, interlocking to enclose the entire top reinforcing cage 2. Clamping auxiliary components 3 are installed on the outside of the steel casing 1. An installation plate 4 is placed above the clamping auxiliary components 3 and rests on the surface of the steel casing 1. The column templates 5 are installed on the surface of the installation plate 4. The clamping auxiliary components 3 and the column templates 5 effectively position the steel casing 1 and the top reinforcing cage 2. During the actual construction, concrete is first poured into the steel casing 1, and then clamping auxiliary parts 3 and column formwork 5 are installed. Before the concrete in the steel casing 1 solidifies, concrete is poured into the column formwork 5. After all the concrete has solidified, the column formwork 5 and clamping auxiliary parts 3 are removed. As can be seen from the above, the pile construction interval of this application is relatively short, and the column pouring can continue without waiting for the concrete of the pile construction to completely solidify, which greatly shortens the construction cycle.

[0036] Specifically, after the steel casing 1 is driven below ground level, a rotary drilling rig is used to drill holes inside the steel casing 1. After drilling is completed, the bottom reinforcing cage 11 is lowered. The top reinforcing cage 2 is fixed to the bottom reinforcing cage 11 by welding. First, the axial center positions of the bottom reinforcing cage 11 and the top reinforcing cage 2 are determined at the top of the bottom reinforcing cage 11 using a cross-shaped method, so that the axial centers of the bottom reinforcing cage 11 and the top reinforcing cage 2 coincide. Then, the operators weld the bottom reinforcing cage 11 and the top reinforcing cage 2 to fix them in place.

[0037] The clamping auxiliary component 3 includes a movable vehicle body 31 and an arc-shaped clamping plate 32. The arc-shaped clamping plate 32 is fixed to one side of the movable vehicle body 31 and is vertically arranged. The arc-shaped clamping plate 32 is consistent with the curvature of the outer wall of the steel casing 1. In this embodiment, two sets of movable vehicle bodies 31 and arc-shaped clamping plates 32 are provided. The two sets of movable vehicle bodies 31 are moved to both sides of the steel casing 1. The arc-shaped clamping plates 32 clamp the two sides of the part of the steel casing 1 that extends beyond the ground. The movable vehicle body 31 is fixed to the ground by anchor bolts 311.

[0038] Mounting plate 4 is fixed to the top of arc-shaped clamping plate 32, and mounting plate 4 is placed on the upper surface of steel casing 1. In order to further improve the clamping effect of clamping auxiliary component 3 on steel casing 1, the part of mounting plate 4 that is placed on the edge of steel casing 1 is fixedly connected to steel casing 1 by positioning bolt 321.

[0039] A semi-circular hole is provided at the center of the two mounting plates 4 splicing together. The two semi-circular holes are spliced ​​together to form a clearance hole 41. The clearance hole 41 fits perfectly with the outer wall of the top steel cage 2, thereby initially positioning the bottom steel cage 11.

[0040] One of the mounting plates 4 has a grouting hole 44 on its surface, which is used for the conduit to pass through, so as to facilitate the subsequent pouring of concrete inside the steel casing 1.

[0041] The column template 5 is set on the upper surface of the mounting plate 4. Two sets of column templates 5 are arranged facing each other, and the opposite side of the two sets of column templates 5 is a concave arc shape that fits the outer wall of the top reinforcing cage 2. A vertical plate 42 is fixedly installed on the surface of the moving vehicle body 31. The vertical plate 42 is located on the side of the column template 5 away from the clearance hole 41. A threaded rod 421 is threadedly connected to the surface of the vertical plate 42. The column template 5 is rotatably connected after the threaded rod 421 passes horizontally through the vertical plate 42. A limiting slider 7155 is fixedly installed at the bottom of the column template 5. A limiting groove 43 is opened on the surface of the mounting plate 4 to allow the limiting slider 7155 to slide horizontally. When the threaded rod 421 is rotated, the threaded rod 421 drives the mounting plate 4 to slide horizontally and the two column templates 5 move closer to each other until they completely surround the top reinforcing cage 2.

[0042] A through groove 51 is provided at the bottom of the column template 5, and the through groove 51 extends vertically upward. A stop groove 52, which communicates with the through groove 51 and has a cross-sectional dimension larger than the through groove 51, is provided at the center of the concave side of the column template 5. Correspondingly, a vertical locking trigger 6 is fixedly provided on the mounting plate 4 near the edge of the relief hole 41. There are two sets of locking triggers 6, which face each other and are directly opposite the stop groove 52 and the through groove 51.

[0043] Specifically, the locking trigger 6 includes a trigger rod 61 and a trigger cone 62. The trigger rod 61 is vertically positioned, and its cross-sectional dimensions are identical to those of the through groove 51. The trigger cone 62 is fixedly positioned on the side of the trigger rod 61 facing the through groove 51, with its edge directly opposite the center of the through groove 51. Stop plates 611 are fixedly positioned on opposite sides of the trigger rod 61. The stop plates 611 are arc-shaped and fit into the stop groove 52. When the two column templates 5 approach and align, the corresponding trigger rod 61 inserts into the through groove 51, the trigger cone 62 protrudes from the through groove 51, and the stop plate 611 fits precisely into the stop groove 52.

[0044] Each column template 5 has a locking fitting 7 on the side facing away from the locking trigger 6. The locking fitting 7 is arranged along the outer convex arc surface of the column template 5. The locking fitting 7 includes a slider 71, a slider 72, and a connecting box 73. The slider 72 is arc-shaped and its curvature is consistent with the curvature of the outer wall arc surface of the column template 5. At least one guide arc block 53 is fixedly provided on the outer side of the column template 5. An arc-shaped through hole 531 is opened inside the guide arc block 53. The opening direction of the arc-shaped through hole 531 is a bent arc shape. The curvature of the arc-shaped through hole 531 is the same as that of the outer surface of the column template 5. The slide rod 72 passes through the arc-shaped through hole 531 and slides in cooperation with the arc-shaped through hole 531. The guide arc-shaped block 53 has an installation cavity 532 inside. The installation cavity 532 is equipped with a return spring 54. The return spring 54 is sleeved on the surface of the slide rod 72. One end of the return spring 54 is fixed to the end of the installation cavity 532, and the other end is fixed relative to the slide rod 72. When the slide rod 72 slides in the arc-shaped through hole 531, it can compress the return spring 54.

[0045] Two sliding rods 72 are fixedly connected to sliders 71 at one end near the through groove 51. The surface of the sliders 71 facing the column template 5 is an arc shape that fits against the column template 5. The sliders 71 slide relative to the surface of the column template 5. The sliding method can be a sliding motion that fits against the surface, or the two sliders 71 on the surface of the column template 5 can be in the shape of inclined planes 711 at the ends that are close to each other, with the two inclined planes 711 facing opposite directions and towards the through groove 51. When the return spring 54 is in its original length state, the bottom positions of the inclined planes 711 of the two sliders 71 abut against each other.

[0046] The connecting box 73 is fixed to one end of the slide rod 72, and the connecting boxes 73 at the ends of the two slide rods 72 are staggered. When the two column templates 5 move to the splicing state, the trigger rod 61 is inserted into the through groove 51, and the trigger cone 62 passes through the through groove 51 and contacts the inclined surface 711 of the slider 71, thereby squeezing the two sliders 71 away from each other, and then driving the slide rod 72 to slide along the arc-shaped through hole 531. During this process, the return spring 54 is compressed until the end of the slide rod 72 is inserted into the corresponding connecting box 73, so that the column template 5 can be clamped to ensure the molding quality of the subsequent concrete pouring.

[0047] In a preferred embodiment, the outer surface of the slide bar 72 is fixed to the inner wall of the connecting box 73 by friction, so that the slide bar 72 can maintain a stable docking state after being inserted into the connecting box 73.

[0048] In a preferred embodiment, the end of the slide rod 72 is provided with an elastically deformable locking hook structure, and the inner wall of the connecting box 73 is provided with a locking groove structure. When the end of the slide rod 72 is inserted into the connecting box 73, the locking hook structure first undergoes elastic deformation until the locking hook structure reaches the locking groove position, thereby enabling the locking hook and the locking groove to achieve elastic insertion and engagement.

[0049] This embodiment also discloses a construction method for an integrated pile-column molding structure, including the following steps:

[0050] S1. Install steel casing 1 at the designated pit location, drive steel casing 1 vertically into the ground, and ensure that the top of steel casing 1 extends above the ground.

[0051] S11. Drill holes inside the steel casing 1 using construction machinery, and clean the holes after drilling is completed.

[0052] S12. After cleaning the hole, lower the bottom steel reinforcement cage 11 into the steel casing 1. The bottom steel reinforcement cage 11 is lowered to the center of the steel casing 1.

[0053] S2. Weld and fix the top steel cage 2 at the center position above the bottom steel cage 11. The center points of the top steel cage 2 and the bottom steel cage 11 are determined by the cross intersection method to ensure that the center of the bottom steel cage 11 coincides with the center of the top steel cage 2.

[0054] S3. Move the two sets of auxiliary clamping parts to the opposite sides of the steel casing 1 and clamp the steel casing 1. The auxiliary clamping parts are fixed to the ground using steel nails or anchor bolts 311.

[0055] S31. Fix the mounting plate 4 above the auxiliary clamping member, and use the clearance hole 41 of the mounting plate 4 to clamp the top steel cage 2 for the first time.

[0056] S32. The mounting plate 4 is fixedly connected to the steel casing 1 using the positioning bolts 321, and the mounting plate 4 is welded and fixed to the arc-shaped clamping plate 32 of the auxiliary clamping part.

[0057] S4. Insert the guide pipe into the grouting hole 44 and extend it into the bottom of the inner wall of the steel casing 1. Start grouting concrete. While monitoring the concrete, continuously lift the guide pipe. The depth of the concrete inside the steel casing 1 should be two-thirds of the depth of the foundation pit.

[0058] S5. At the same time, rotate the threaded rod 421 to drive the two sets of column templates 5 to approach and splice with each other. After the two sets of column templates 5 are spliced ​​with each other, the locking trigger 6 enters the through groove 51 and drives the locking mating part 7 to start, so that the end of the slide rod 72 is inserted into the connecting box 73 to complete the surrounding clamping of the column template 5.

[0059] S6. When the concrete pouring height inside the steel casing 1 reaches two-thirds of the depth of the foundation pit, the guide pipe is taken out from the grouting hole 44, and concrete is poured into the column formwork 5 before the concrete inside the steel casing 1 initially sets, until the concrete fills the inside of the steel casing 1 and the entire column formwork 5.

[0060] S7. After the concrete has completely solidified, rotate the threaded rod 421 in the opposite direction to move the two sets of column formwork 5 away from each other, and complete the removal of the column formwork 5. Finally, remove the mounting plate 4 and the auxiliary clamping parts.

[0061] In summary, the construction process of integrated pile and column mainly includes two aspects: pile construction and column construction. Pile construction roughly includes the installation of steel casing 1, drilling, hole cleaning, lowering the bottom reinforcing cage 11, and pouring concrete. After the bottom reinforcing cage 11 is lowered, the top reinforcing cage 2 is welded to the center of the bottom reinforcing cage 11, so that the internal skeleton of the pile and column can be connected as one unit. Then, the top reinforcing cage 2 is enclosed to provide pouring space. The enclosure of the top reinforcing cage 2 mainly relies on the limitation of the clearance hole 41 and the enclosure of the column formwork 5. Furthermore, because the auxiliary clamping device clamps the steel casing 1 and the column formwork 5 is connected to the auxiliary clamping device through the mounting plate 4, the pile and column can maintain their integrity during the pouring process. This construction process also makes full use of the cooperation between the locking trigger 6 and the locking mating device 7, so that the joint of the column formwork 5 can be clamped when they approach and splice each other, which greatly improves the stability of the column forming process and the final forming quality.

[0062] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A pile integrated forming structure, comprising a steel casing (1) installed on the ground, a bottom reinforcement cage (11) arranged inside the steel casing (1), characterized in that: The top center position of the bottom reinforcement cage (11) is fixed with a top reinforcement cage (2), and the opposite sides of the steel casing (1) are provided with clamping auxiliary parts (3) for clamping the steel casing (1), the top of the clamping auxiliary part (3) is fixedly provided with a mounting plate (4) which is arranged on the upper surface of the steel casing (1), the two groups of mounting plates (4) are spliced with each other and the spliced center position is provided with a displacement round hole (41), the surface of the mounting plate (4) is provided with a pouring hole (44) for inserting a pipe, the top reinforcement cage (2) vertically penetrates the displacement round hole (41), and the opposite sides of the mounting plate (4) are provided with two groups of column formworks (5) which are spliced with each other and surround the top reinforcement cage (2); the side surface of the two groups of column formworks (5) which are opposite to each other is provided with a through groove (51), the position of the edge of the displacement round hole (41) which is opposite to the through groove (51) is fixedly provided with a locking trigger part (6), and the outer arc surface of the column formwork (5) is provided with a locking matching part (7); when the two groups of column formworks (5) are butted, the locking trigger part (6) is in contact with the locking matching part (7) after penetrating through the through groove (51), so as to drive the locking matching part (7) to move and clamp the two groups of column formworks (5); the locking trigger part (6) comprises a trigger rod (61) and a trigger cone (62), the trigger rod (61) is vertically arranged and opposite to the through groove (51), the trigger rod (61) is matched with the through groove (51), the trigger cone (62) is fixedly arranged on the side of the trigger rod (61) which faces the column formwork (5), the projection of the trigger cone (62) on the horizontal plane is a triangle, and the cone head position of the trigger cone (62) faces the center of the through groove (51); the locking matching part (7) comprises two sliders (71) which are opposite to each other and whose opposite ends are located on the center extension line of the through groove (51), a slide rod (72) which is fixed at one end away from the two sliders (71) and has the same arc as the outer surface of the column formwork (5), and a connecting box (73) which is fixed at the end of the slide rod (72) away from the slider (71), the connecting box (73) is provided with two, and the two connecting boxes (73) are respectively fixed on the end of the slide rod (72) of the two different column formworks (5), the slider (71) is in sliding fit with the outer surface of the column formwork (5), and the side surface of the two sliders (71) which are opposite to each other is provided with an inclined surface (711) which is in contact with the conical surface of the trigger cone (62).

2. A pile-integrated forming structure according to claim 1, characterized by: The cross section of each group of column formworks (5) is semicircular arc, and the two groups of column formworks (5) are butted to form a cylindrical structure matched with the top reinforcement cage (2).

3. A pile-integrated forming structure according to claim 2, characterized in that: The opposite sides of the trigger rod (61) are fixedly provided with a stop plate (611), the surface of the column formwork (5) is provided with a stop groove (52) matched with the stop plate (611), the stop groove (52) is arranged on the concave side of the through groove (51) which faces the column formwork (5), and the stop groove (52) is communicated with the through groove (51).

4. A pile-integrated forming structure according to claim 3, characterized in that: The clamping auxiliary piece (3) comprises a moving vehicle body (31) and an arc-shaped clamping plate (32), the arc-shaped clamping plate (32) is fixed to one side of the moving vehicle body (31), and the arc-shaped clamping plate (32) is used for closely attaching to the outer surface of the steel casing (1), a vertical plate (42) is fixedly arranged on the upper surface of the moving vehicle body (31), the vertical plate (42) is located on the outer side of the column formwork (5), a threaded rod (421) is threadedly connected to the vertical plate (42), and the threaded rod (421) is rotationally connected with the column formwork (5) after penetrating through the vertical plate (42) horizontally.

5. A pile-integrated forming structure according to claim 4, characterized in that: The outer side wall of the column formwork (5) is fixedly provided with a guide arc-shaped block (53), the slide rod (72) penetrates through the guide arc-shaped block (53) and is in sliding fit with the guide arc-shaped block (53), the reset spring (54) fixed with the slide rod (72) is arranged in the guide arc-shaped block (53), and when the reset spring (54) is in the original length state, the ends of the two sliding blocks (71) with the inclined surfaces (711) abut against each other.

6. A method of construction of a pile integrated with a structure, using the pile integrated forming structure according to claim 5, characterized by, The construction steps include the following: S1, installing the steel casing (1) at the determined foundation pit position, and performing drilling and hole cleaning operations in the steel casing (1), after the hole cleaning, a bottom steel reinforcement cage (11) is lowered into the steel casing (1); S2, welding and fixing a top steel reinforcement cage (2) at the center position above the bottom steel reinforcement cage (11); S3, moving two groups of auxiliary clamping pieces to the opposite sides of the steel casing (1) and clamping the steel casing (1), fixing an installation plate (4) above the clamping auxiliary piece (3), and first clamping the top steel reinforcement cage (2) by using the relief circular hole (41) of the installation plate (4); S4, inserting a guide pipe into the pouring hole (44) and extending into the inner bottom of the steel casing (1), and starting to pour concrete; S5, at the same time, rotating the threaded rod (421) to drive the two groups of column formworks (5) to approach and splice each other, when the two groups of column formworks (5) splice each other, the locking trigger (6) enters the through slot (51) and drives the locking matching piece (7) to start, so that the end of the slide rod (72) is inserted into the connection box (73), and the surrounding clamping of the column formwork (5) is completed; S6, after the concrete pouring in the steel casing (1) is completed, the concrete is poured into the column formwork (5) before the initial setting of the concrete in the steel casing (1), until the pouring operation is completed; S7, after the pouring operation is completed, the threaded rod (421) is reversely rotated to drive the two groups of column formworks (5) to move away from each other, the column formwork (5) is removed, and finally the installation plate (4) and the auxiliary clamping piece are removed.

Images