CN117868492A - Pier column construction method for connecting steel pipe composite piles - Google Patents

Abstract

The invention belongs to the technical field of building construction, in particular to a pier column construction method for connecting steel pipe composite piles, which comprises the following steps: and fourthly, forming a plurality of round holes on the surface of the connecting steel pipe, penetrating the fixed steel bars through the round holes through a positioning and conveying mechanism on the pouring template, and welding the fixed steel bars and the steel bar cage together through a welding mechanism. According to the pier column construction method for connecting the steel pipe composite piles, the positioning and transporting mechanism is arranged, the fixed steel bars are convenient to move and limit, the fixed steel bars pass through round holes of the connecting steel pipes along the perforations, the fixed steel bars can be fixed, the fixed steel bars and the steel bar cages are welded together by the welding mechanism, meanwhile, the fixed steel bars can be transported inwards in sequence according to the difference of the heights of the round holes, the fixed steel bars are connected with the steel bar cages, the connection strength between the connecting steel pipes and the pier columns is increased, and the overall stability and the bearing capacity of the pile foundation are further improved through splicing steel plates, so that the pier column stability is improved, and the construction efficiency is also improved.

Description

Pier column construction method for connecting steel pipe composite piles

Technical Field

The invention relates to the technical field of building construction, in particular to a pier column construction method for connecting steel pipe composite piles.

Background

Pier studs, i.e. lower load-bearing parts for carrying an upper structure in civil engineering. The cross section of the pier stud is mostly circular, and the pier stud also has elliptic, square, curve-shaped, parabolic and other anisotropic pier studs. Is an important component in the engineering of highway bridges, railway bridges, sidewalks and other bridges, overpasses, ramp bridges, overpasses and the like.

At present, steel pipe composite piles are often adopted as main supporting structures of pier columns in pile foundation engineering, and the pile foundation engineering has the advantages of strong bearing capacity, good durability and the like and is used for various buildings and foundation engineering. However, in the existing construction method, the connection structure between the connection steel pipe and the pier stud often has the problems of loose connection, poor stability and the like, which is not beneficial to improving the overall stability and bearing capacity of the pile foundation.

Disclosure of Invention

Based on the technical problems set forth above, the invention provides a pier column construction method for connecting steel pipe composite piles.

The pier column construction method for connecting the steel pipe composite pile provided by the invention comprises the following steps:

embedding the lower end of a connecting steel pipe into a pier stud, arranging a spliced steel plate at the upper part of the pier stud, and arranging a hole matched with the outer surface of the connecting steel pipe on the spliced steel plate;

step two, arranging a reinforcement cage at the upper part of the pier stud, wherein the lower end of the reinforcement cage is embedded into the pier stud;

step three, arranging a pouring template on the outer surface of the upper part of the pier stud;

and fourthly, forming a plurality of round holes on the surface of the connecting steel pipe, penetrating the fixed steel bars through the round holes through a positioning and conveying mechanism on the pouring template, and welding the fixed steel bars and the steel bar cage together through a welding mechanism.

Preferably, a perforation matched with the outer surface of the fixed steel bar is formed on one side surface of the pouring template.

Through the technical scheme, the fixed steel bars are conveniently driven to enter the pouring template through the perforation, and the fixed steel bars penetrate through the steel bar cage to be inserted into the round holes.

Preferably, the positioning and transporting mechanism comprises a supporting plate which is symmetrically distributed and arranged on the pouring template, a mounting plate is fixedly arranged on the upper surface of the supporting plate, a mounting sleeve is symmetrically distributed and arranged on the upper surface of the mounting plate, a first screw rod is mounted on the inner wall of the mounting sleeve through a bearing, a driving motor is fixedly mounted on the upper surface of the mounting sleeve, one end of an output shaft of the driving motor is fixedly sleeved with the upper end of the first screw rod, a thread block is sleeved on the surface thread of the first screw rod, the surface of the thread block is in sliding clamping connection with the inner wall of the mounting sleeve, and a movable sleeve is fixedly connected with the lower end of the thread block.

Through above-mentioned technical scheme, the rotation of driving motor output shaft drives the first screw rod rotation of being connected rather than, and the rotation of first screw rod drives the screw thread piece and removes on first screw rod along installation cover inner wall, and the removal of screw thread piece drives the removal cover and removes.

Preferably, the inner wall of moving the cover runs through and has offered the storage tank, the inner wall slip joint in storage tank has flexible cover, the surface of flexible cover is seted up flutedly, the inner wall fixedly connected with rack of recess, the inner wall fixed mounting of moving the cover has the rotation motor, the fixed pinion that has cup jointed of output shaft one end of rotation motor, the surface of pinion with the surface engagement of rack.

Through above-mentioned technical scheme, the rotation of rotating motor output shaft drives the driving gear who is connected with it and rotates, and the rotation of driving gear drives the rack through the meshing with the rack and removes, and the removal of rack drives the flexible cover and removes along the inner wall of accomodating the groove.

Preferably, the lower extreme fixedly connected with connecting plate of flexible cover, the lower surface of connecting plate is rectangular array distribution and is provided with the promotion cylinder, three the equal fixedly connected with spill frame of piston rod one end of promotion cylinder, the inner wall of spill frame is installed through the bearing and is had two-way lead screw, and three two-way lead screw is in the same place through the spliced pole connection, one of them one side fixed surface of spill frame installs accommodate motor, accommodate motor's output shaft one end and one of them two-way lead screw's one end is fixed to be cup jointed, two-way lead screw's surface is the symmetric distribution and is provided with splint, splint the surface with the inner wall slip joint of spill frame.

Through above-mentioned technical scheme, the rotation of accommodate motor output shaft drives the two-way lead screw rotation rather than being connected, and this two-way lead screw's rotation drives splint and carries out relative movement on two-way lead screw along the inner wall of spill frame to the splint of being convenient for carry out the centre gripping to the surface of fixed reinforcing bar.

Preferably, the surface of the supporting plate is provided with a limiting chute, the surface of the concave frame is in sliding connection with the inner wall of the limiting chute, and the surfaces of the opposite sides of the two clamping plates are provided with guide pulleys.

Through above-mentioned technical scheme, promote the flexible spill frame that drives of cylinder piston rod and be connected with it and remove along the inner wall of spacing spout, splint carry out the centre gripping to the surface of fixed reinforcing bar, and the setting of guide pulley can also control the removal when inserting the round hole simultaneously to the fixed reinforcing bar of being convenient for, thereby the position of adjustment fixed reinforcing bar.

Preferably, the welding mechanism comprises a self-driven sliding rail fixedly mounted on the mounting plate, limit plates are symmetrically distributed on the surface of a sliding block of the self-driven sliding rail, sliding grooves are formed in the surface of the mounting plate, the surface of the limit plates are slidably connected with the inner walls of the sliding grooves, concave blocks are arranged at the lower ends of the limit plates, second screw rods are mounted on the inner walls of the concave blocks through bearings, servo motors are fixedly mounted on one side surface of the concave blocks, one ends of output shafts of the servo motors are fixedly sleeved with one ends of the second screw rods, moving frames are sleeved on the surface threads of the second screw rods, and the surfaces of the moving frames are slidably clamped with the inner walls of the concave blocks.

Through above-mentioned technical scheme, through the removal of slider on the self-driven slide rail drive limiting plate along the inner wall of sliding tray removal, the rotation of servo motor output shaft drives the second screw rod rotation rather than being connected, and the rotation of second screw rod drives the inner wall removal along the spill piece of the movable frame rather than being connected.

Preferably, the backup pad with the movable groove has all been seted up on the surface of connecting plate, the surface of movable rack pass the movable groove and with the inner wall sliding connection of movable groove, the pivot is installed through the bearing to the inner wall of movable rack, one side fixed surface of movable rack installs the rotating electrical machines, the output shaft one end of rotating electrical machines with the one end of pivot is fixed to be cup jointed, the fixed welder that has cup jointed of surface of pivot.

Through above-mentioned technical scheme, the rotation of rotating electrical machines output shaft drives the pivot rotation of being connected with it, and the welder rotation of being connected with is driven in the rotation of this pivot.

Preferably, the lower surface of the mounting plate is provided with a limit groove, and the surface of the concave block is in sliding connection with the inner wall of the limit groove.

Through the technical scheme, the concave block moves along the inner wall of the limit groove.

Preferably, the inner wall of the limiting plate is fixedly provided with a plurality of telescopic rods, and one end of each telescopic rod is fixedly connected with the upper surface of the concave block.

Through the technical scheme, the concave block is driven to move downwards by the downward movement of the connecting plate, so that the multi-section telescopic rod is driven to extend.

The beneficial effects of the invention are as follows:

1. through setting up location transport mechanism, be convenient for carry out spacingly to the removal of fixed reinforcing bar for fixed reinforcing bar passes the round hole of connecting the steel pipe along the perforation, and can fix fixed reinforcing bar, and welding mechanism of being convenient for welds it with the steel reinforcement cage together, can also be in proper order inwards transport fixed reinforcing bar according to the difference of round hole height simultaneously, makes it be connected with the steel reinforcement cage, increases the joint strength between connecting steel pipe and pier stud, and further passes through the overall stability and the bearing capacity of pile foundation through the concatenation steel sheet, not only improves pier stud stability, can also improve efficiency of construction.

2. Through setting up welding mechanism, be convenient for with fixed reinforcing bar and steel bar cage welding together, can reciprocate along with location transport mechanism's reciprocates simultaneously to can aim at the junction of fixed reinforcing bar and steel bar cage as required, link together both through welder, thereby improve pier stud stability and bearing capacity.

Drawings

FIG. 1 is a schematic diagram of a pier construction method for connecting steel pipe composite piles according to the present invention;

FIG. 2 is a perspective view of a spliced steel plate structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

fig. 3 is a perspective view of a pouring template structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

fig. 4 is a perspective view of a perforated structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

FIG. 5 is a perspective view of a mounting plate structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

fig. 6 is a perspective view of a support plate structure of a pier column construction method for connecting steel pipe composite piles according to the present invention;

fig. 7 is a perspective view of a self-driven sliding rail structure of a pier column construction method for connecting steel pipe composite piles according to the present invention;

FIG. 8 is a perspective view of a movable frame structure of a pier column construction method for connecting steel pipe composite piles according to the present invention;

FIG. 9 is a perspective view of a concave block structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

fig. 10 is a perspective view of a second screw structure of the pier stud construction method for connecting steel pipe composite piles according to the present invention;

FIG. 11 is a perspective view of a multi-section telescopic rod structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

FIG. 12 is a perspective view of a moving sleeve structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention;

fig. 13 is a perspective view of a driving gear structure of a pier stud construction method for connecting steel pipe composite piles according to the present invention.

In the figure: 1. connecting steel pipes; 2. pier column; 3. splicing steel plates; 4. a reinforcement cage; 5. pouring a template; 6. a round hole; 7. fixing the reinforcing steel bars; 8. a support plate; 801. a mounting plate; 802. a mounting sleeve; 803. a first screw; 804. a driving motor; 805. a screw block; 806. a moving sleeve; 807. a storage groove; 808. a telescopic sleeve; 809. a groove; 810. a rack; 811. a rotating motor; 812. a drive gear; 813. a connecting plate; 814. a pushing cylinder; 815. a concave frame; 816. a bidirectional screw rod; 817. adjusting a motor; 818. a clamping plate; 819. limiting sliding grooves; 820. a guide pulley; 9. self-driven slide rail; 901. a limiting plate; 902. a sliding groove; 903. a concave block; 904. a second screw; 905. a servo motor; 906. a moving rack; 907. a moving groove; 908. a rotating shaft; 909. a rotating electric machine; 910. a welding gun; 911. a limit groove; 912. a multi-section telescopic rod; 10. and (5) perforating.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to fig. 1 to 13, a pier construction method for connecting steel pipe composite piles includes the steps of:

step one, embedding the lower end of the connecting steel pipe 1 into the pier stud 2, arranging a spliced steel plate 3 on the upper part of the pier stud 2, arranging a hole matched with the outer surface of the connecting steel pipe 1 on the spliced steel plate 3, and welding the spliced dry plate and the connecting steel pipe 1 together.

And step two, arranging a reinforcement cage 4 on the upper part of the pier stud 2, and embedding the lower end of the reinforcement cage 4 into the pier stud 2.

And thirdly, arranging a pouring template 5 on the outer surface of the upper part of the pier stud 2.

And fourthly, forming a plurality of round holes 6 on the surface of the connecting steel pipe 1, penetrating the fixed steel bars 7 through the round holes 6 through a positioning and conveying mechanism on the pouring template 5, and welding the fixed steel bars 7 and the steel bar cage 4 together through a welding mechanism.

In order to insert the fixed steel bar 7 into the round hole 6 connected with the steel pipe 1, a perforation 10 matched with the outer surface of the fixed steel bar 7 is formed in the surface of one side of the pouring template 5, the perforation 10 and the round hole 6 are positioned on the same horizontal line, the fixed steel bar 7 is conveniently inserted into the round hole 6 through the perforation 10, and then the movement of the fixed steel bar 7 is limited.

In order to adjust the transportation of the fixed reinforcing steel bars 7 according to the change of the height position of the round holes 6, the positioning and transporting mechanism comprises support plates 8 which are symmetrically distributed on the pouring templates 5, mounting plates 801 are fixedly arranged on the upper surfaces of the support plates 8, mounting sleeves 802 are symmetrically distributed on the upper surfaces of the mounting plates 801, first screw rods 803 are mounted on the inner walls of the mounting sleeves 802 through bearings, driving motors 804 are fixedly mounted on the upper surfaces of the mounting sleeves 802, one ends of output shafts of the driving motors 804 are fixedly sleeved with the upper ends of the first screw rods 803, threaded blocks 805 are sleeved on the surfaces of the first screw rods 803 in a threaded mode, the surfaces of the threaded blocks 805 are in sliding clamping connection with the inner walls of the mounting sleeves 802, moving sleeves 806 are fixedly connected to the lower ends of the threaded blocks 805, the first screw rods 803 are driven to rotate through rotation of the output shafts of the driving motors 804, the first screw rods 803 drive the threaded blocks 805 to move on the first screw rods 803 along the inner walls of the mounting sleeves 802, and the up-and-down movement of the threaded blocks 805 drive the moving sleeves 806 to move up and down.

In order to increase the moving distance, a storage groove 807 is formed in the inner wall of the moving sleeve 806 in a penetrating manner, a telescopic sleeve 808 is connected to the inner wall of the storage groove 807 in a sliding and clamping manner, a groove 809 is formed in the surface of the telescopic sleeve 808, a rack 810 is fixedly connected to the inner wall of the groove 809, a rotating motor 811 is fixedly arranged on the inner wall of the moving sleeve 806, a driving gear 812 is fixedly sleeved at one end of an output shaft of the rotating motor 811, the surface of the driving gear 812 is meshed with the surface of the rack 810, the driving gear 812 is driven to rotate by rotation of the output shaft of the rotating motor 811, the rack 810 is driven to move by meshing with the rack 810, and the telescopic sleeve 808 is driven to move up and down along the inner wall of the storage groove 807 by up-and-down movement of the rack 810.

In order to clamp the fixed reinforcing steel bars 7, a connecting plate 813 is fixedly connected to the lower end of the telescopic sleeve 808, pushing air cylinders 814 are distributed on the lower surface of the connecting plate 813 in a rectangular array, concave frames 815 are fixedly connected to one ends of piston rods of the three pushing air cylinders 814, bidirectional screw rods 816 are mounted on the inner walls of the concave frames 815 through bearings, the three bidirectional screw rods 816 are connected together through connecting columns, an adjusting motor 817 is fixedly mounted on one side surface of one concave frame 815, one end of an output shaft of the adjusting motor 817 is fixedly sleeved with one end of one bidirectional screw rod 816, clamping plates 818 are symmetrically distributed on the surface of the bidirectional screw rod 816, the surface of the clamping plates 818 are in sliding clamping connection with the inner walls of the concave frames 815, limiting sliding grooves 819 are formed on the surface of the supporting plate 8, the surface of the concave frames 815 are in sliding connection with the inner walls of the limiting sliding grooves 819, the telescopic driving of piston rods of the pushing air cylinders 814 move along the inner walls of the limiting sliding grooves 819, the bidirectional screw rods 816 connected with the telescopic driving the bidirectional screw rods 816 to rotate through rotation of the output shaft of the adjusting motor 817, and the rotation of the bidirectional screw rods 816 drive the clamping plates 818 to move relatively along the inner walls of the limiting plates 818, so that the clamping plates 818 can clamp the surfaces of the clamping plates to clamp the reinforcing steel bars 7.

To position the transportation of the fixing bars 7, guide pulleys 820 are provided at opposite side surfaces of the two clamping plates 818.

Through setting up location transport mechanism, be convenient for carry out spacingly to fixed reinforcement 7's removal for fixed reinforcement 7 passes round hole 6 of connecting steel pipe 1 along perforation 10, and can fix fixed reinforcement 7, be convenient for welding mechanism is in the same place its with steel reinforcement cage 4 welding, can also be according to the difference of round hole 6 height simultaneously inwards transport fixed reinforcement 7 in proper order, make it be connected with steel reinforcement cage 4, increase the joint strength between connecting steel pipe 1 and pier stud 2, and further pass through the overall stability and the bearing capacity of pile foundation through concatenation steel sheet 3, not only improve pier stud 2 stability, can also improve the efficiency of construction.

In order to weld the fixed reinforcement 7 and the reinforcement cage 4 together, welding mechanism includes the self-driven slide rail 9 of fixed mounting on mounting panel 801, the slider surface of self-driven slide rail 9 is the symmetric distribution and is provided with limiting plate 901, sliding tray 902 has been seted up on the surface of mounting panel 801, the surface and the inner wall sliding connection of sliding tray 902 of limiting plate 901, and the lower extreme of limiting plate 901 is provided with concave piece 903, second screw rod 904 is installed through the bearing to the inner wall of concave piece 903, one side surface fixed mounting of concave piece 903 has servo motor 905, servo motor's output shaft one end and the fixed joint of one end of second screw rod 904, movable rack 906 has been cup jointed to the surface screw thread of second screw rod 904, movable rack 906's surface and the inner wall slip joint of concave piece 903, the movement of driving limiting plate 901 along the inner wall of sliding tray 902 through the removal of the slider on the self-driven slide rail 9, the rotation of servo motor 905 output shaft drives the second screw rod 904 that is connected with it rotates, the rotation of second screw rod 904 drives movable rack 906 that is connected with it along the inner wall of concave piece.

In order to facilitate the welding of the fixed reinforcement 7 and the reinforcement cage 4 together, the surfaces of the supporting plate 8 and the connecting plate 813 are provided with a movable groove 907, the surface of the movable frame 906 passes through the movable groove 907 and is in sliding connection with the inner wall of the movable groove 907, the inner wall of the movable frame 906 is provided with a rotating shaft 908 through a bearing, one side surface of the movable frame 906 is fixedly provided with a rotating motor 909, one end of an output shaft of the rotating motor 909 is fixedly sleeved with one end of the rotating shaft 908, the surface of the rotating shaft 908 is fixedly sleeved with a welding gun 910, the rotating shaft 908 connected with the rotating motor is driven to rotate through the rotation of the output shaft of the rotating motor 909, and the rotation of the rotating shaft 908 drives the welding gun 910 connected with the rotating shaft to rotate, so that the welding gun 910 is convenient to align the joint of the fixed reinforcement 7 and the reinforcement cage 4 according to requirements.

In order to house the concave block 903, a limit groove 911 is formed on the lower surface of the mounting plate 801, and the surface of the concave block 903 is slidably connected to the inner wall of the limit groove 911.

In order to enable the concave block 903 to be supported when the concave block 903 is driven to move downwards by the downward movement of the connecting plate 813, a plurality of telescopic rods 912 are fixedly arranged on the inner wall of the limiting plate 901, and one ends of the telescopic rods 912 are fixedly connected with the upper surface of the concave block 903.

Through setting up welding mechanism, be convenient for be in the same place fixed reinforcement 7 and steel reinforcement cage 4 welding, can reciprocate along with location transport mechanism's reciprocates simultaneously to can aim at the junction of fixed reinforcement 7 and steel reinforcement cage 4 as required, link together both through welder 910, thereby improve pier stud 2 stability and bearing capacity.

Working principle: when in use, the fixed steel bars 7 are sequentially inserted from the perforations 10 on the pouring template 5, so that the fixed steel bars are inserted into the round holes 6 of the connecting steel pipes 1;

then, a driving motor 804 is started according to the position of the round hole 6, the rotation of an output shaft of the driving motor 804 drives a first screw 803 connected with the driving motor 804 to rotate, the rotation of the first screw 803 drives a threaded block 805 to move on the first screw 803 along the inner wall of the mounting sleeve 802, the movement of the threaded block 805 drives a moving sleeve 806 to move, the downward movement of the moving sleeve 806 drives a telescopic sleeve 808 to move downwards, meanwhile, a rotating motor 811 is started according to the position of the round hole 6, the rotation of an output shaft of the rotating motor 811 drives a driving gear 812 connected with the driving gear 812 to rotate, the rotation of the driving gear 812 drives a rack 810 to move through meshing with the rack 810, and the downward movement of the rack 810 drives the telescopic sleeve 808 to move downwards along the inner wall of the accommodating groove 807 until the downward movement of the telescopic sleeve 808 drives a clamping plate 818 on a connecting plate 813 to be aligned with a fixed reinforcing steel bar 7;

simultaneously, the concave block 903 is driven to move downwards by the moving frame 906 through the downward movement of the connecting plate 813, so that the multi-section telescopic rod 912 in the limiting plate 901 is stretched;

then, a piston rod of the pushing cylinder 814 stretches out to drive a concave frame 815 connected with the piston rod to move out along the inner wall of a limit chute 819, an adjusting motor 817 is started again, the rotation of an output shaft of the adjusting motor 817 drives a bidirectional screw 816 connected with the piston rod to rotate, and the rotation of the bidirectional screw 816 drives a clamping plate 818 to relatively move on the bidirectional screw 816 along the inner wall of the concave frame 815, so that the clamping plate 818 is convenient for clamping the surface of the fixed steel bar 7, and a guide pulley 820 is rotated along with the stretching-in of the fixed steel bar 7, so that the fixed steel bar 7 is convenient to enter until two ends of the fixed steel bar 7 are contacted with a steel bar cage 4;

then, a servo motor 905 is started according to the position between the fixed steel bar 7 and the steel bar cage 4, the rotation of an output shaft of the servo motor 905 drives a second screw rod 904 connected with the servo motor to rotate, the rotation of the second screw rod 904 drives a movable frame 906 connected with the second screw rod to move along the inner wall of a concave block 903, a rotating motor 909 is started according to the requirement, the rotation of an output shaft of the rotating motor 909 drives a rotating shaft 908 connected with the rotating motor to rotate, and the rotation of the rotating shaft 908 drives a welding gun 910 connected with the rotating motor to rotate, so that a welding joint of the welding gun 910 is convenient to be close to the joint of the fixed steel bar 7 and the steel bar cage 4;

meanwhile, when the welding gun 910 finishes welding the fixed steel bar 7 and the steel bar cage 4, the self-driving sliding rail 9 is started, so that the movement of the sliding block on the self-driving sliding rail 9 drives the limiting plate 901 to move along the inner wall of the sliding groove 902, and the telescopic sleeve 808 drives the concave block 903 to move, and then drives the connecting plate 813 to move, so that the fixed steel bar 7 and the steel bar cage 4 can be welded in sequence.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. A pier column construction method for connecting steel pipe composite piles is characterized by comprising the following steps: the method comprises the following steps:

step one, embedding the lower end of a connecting steel pipe (1) into a pier stud (2), arranging a spliced steel plate (3) at the upper part of the pier stud (2), arranging a hole matched with the outer surface of the connecting steel pipe (1) on the spliced steel plate (3), and welding a spliced dry plate and the connecting steel pipe (1) together;

step two, arranging a reinforcement cage (4) at the upper part of the pier stud (2), and embedding the lower end of the reinforcement cage (4) into the pier stud (2);

step three, arranging a pouring template (5) on the outer surface of the upper part of the pier stud (2);

and fourthly, forming a plurality of round holes (6) on the surface of the connecting steel pipe (1), penetrating the fixed steel bars (7) through the round holes (6) through a positioning and conveying mechanism on the pouring template (5), and welding the fixed steel bars (7) and the steel bar cage (4) together through a welding mechanism.

2. The pier column construction method for connecting steel pipe composite piles according to claim 1, wherein the pier column construction method comprises the following steps: and a perforation (10) matched with the outer surface of the fixed steel bar (7) is formed on one side surface of the pouring template (5).

3. The pier column construction method for connecting steel pipe composite piles according to claim 1, wherein the pier column construction method comprises the following steps: the positioning and transporting mechanism comprises supporting plates (8) which are symmetrically distributed on the pouring template (5), mounting plates (801) are fixedly mounted on the upper surfaces of the supporting plates (8), mounting sleeves (802) are symmetrically distributed on the upper surfaces of the mounting plates (801), first screw rods (803) are mounted on the inner walls of the mounting sleeves (802) through bearings, driving motors (804) are fixedly mounted on the upper surfaces of the mounting sleeves (802), one ends of output shafts of the driving motors (804) are fixedly sleeved on the upper ends of the first screw rods (803), threaded blocks (805) are sleeved on the surfaces of the first screw rods (803) in a threaded mode, and the surfaces of the threaded blocks (805) are slidably clamped with the inner walls of the mounting sleeves (802), and movable sleeves (806) are fixedly connected to the lower ends of the threaded blocks (805).

4. A pier stud construction method for connecting steel pipe composite piles according to claim 3, wherein: the inner wall of removal cover (806) runs through and has seted up accomodates groove (807), accomodate the inner wall slip joint in groove (807) and have flexible cover (808), recess (809) have been seted up on the surface of flexible cover (808), the inner wall fixedly connected with rack (810) of recess (809), the inner wall fixed mounting of removal cover (806) has rotation motor (811), the fixed pinion (812) that has cup jointed of output shaft one end of rotation motor (811), the surface of pinion (812) with the surface engagement of rack (810).

5. The pier column construction method for connecting steel pipe composite piles according to claim 4, wherein the pier column construction method comprises the following steps: the lower extreme fixedly connected with connecting plate (813) of flexible cover (808), the lower surface of connecting plate (813) is rectangular array distribution and is provided with promotion cylinder (814), three the equal fixedly connected with spill frame (815) of piston rod one end of promotion cylinder (814), the inner wall of spill frame (815) is installed through the bearing two-way lead screw (816), and three two-way lead screw (816) are in the same place through the spliced pole connection, wherein one side surface fixed mounting of spill frame (815) has accommodate motor (817), the output shaft one end of accommodate motor (817) is fixed with one of them one end of two-way lead screw (816) cup joints, the surface of two-way lead screw (816) is symmetric distribution and is provided with splint (818), the surface of splint (818) with the inner wall slip joint of spill frame (815).

6. The pier column construction method for connecting steel pipe composite piles according to claim 5, wherein the pier column construction method comprises the following steps: limiting sliding grooves (819) are formed in the surface of the supporting plate (8), the surface of the concave frame (815) is in sliding connection with the inner wall of the limiting sliding grooves (819), and guide pulleys (820) are arranged on the surfaces of the opposite sides of the two clamping plates (818).

7. The pier column construction method for connecting steel pipe composite piles according to claim 6, wherein: the welding mechanism comprises self-driven sliding rails (9) fixedly mounted on a mounting plate (801), limiting plates (901) are symmetrically distributed on the surface of sliding blocks of the self-driven sliding rails (9), sliding grooves (902) are formed in the surface of the mounting plate (801), the surfaces of the limiting plates (901) are slidably connected with the inner walls of the sliding grooves (902), concave blocks (903) are arranged at the lower ends of the limiting plates (901), second screw rods (904) are mounted on the inner walls of the concave blocks (903) through bearings, servo motors (905) are fixedly mounted on one side surfaces of the concave blocks (903), one ends of output shafts of the servo motors (905) are fixedly sleeved with one ends of the second screw rods (904), moving frames (906) are sleeved on the surface threads of the second screw rods (904), and the surfaces of the moving frames (906) are slidably clamped with the inner walls of the concave blocks (903).

8. The pier column construction method for connecting steel pipe composite piles according to claim 7, wherein: the utility model discloses a welding gun, including backup pad (8) and connecting plate (813), backup pad (8) and connecting plate (813) are all offered on the surface, the surface of moving frame (906) passes move groove (907) and with the inner wall sliding connection of moving groove (907), pivot (908) are installed through the bearing to the inner wall of moving frame (906), one side fixed surface mounting of moving frame (906) has rotating electrical machines (909), the output shaft one end of rotating electrical machines (909) with the one end of pivot (908) is fixed cup joint, the fixed surface of pivot (908) cup joints welder (910).

9. The pier column construction method for connecting steel pipe composite piles according to claim 7, wherein: a limiting groove (911) is formed in the lower surface of the mounting plate (801), and the surface of the concave block (903) is in sliding connection with the inner wall of the limiting groove (911).

10. The pier column construction method for connecting steel pipe composite piles according to claim 7, wherein: the inner wall of the limiting plate (901) is fixedly provided with a plurality of telescopic rods (912), and one ends of the telescopic rods (912) are fixedly connected with the upper surface of the concave block (903).