Steel pipe pile construction method adopting grooving method

Abstract

The invention discloses a steel pipe pile construction method adopting a grooving method, and belongs to the technical field of steel pipe pile construction.The steel pipe pile construction method specifically comprises the following steps that S1, a groove hole is excavated; s2, carrying out hardening treatment, and dividing the slotted hole into a plurality of units; s3, mounting a positioning frame, wherein the positioning frame is provided with a guide surface; s4, guiding installation is conducted on the steel pipe piles through the guiding faces of the two adjacent positioning frames; s5, the positioning frame is detached and installed to the position where guiding is conducted when the next steel pipe pile is installed; s6, wing plates are installed on the peripheral faces of the head steel pipe pile and the tail steel pipe pile of the unit; s7, concrete is poured into all the steel pipe piles of the same unit in sequence, and then sand backfilling treatment is conducted on gaps between the steel pipe piles and the slotted holes in the unit; and S8, after one unit is solidified, the next unit is constructed. The device has the effects that the perpendicularity and accuracy of the position where the steel pipe pile is located when the steel pipe pile is installed in the groove hole can be conveniently guaranteed, and then the forming quality of the formed steel pipe pile structure can be finally guaranteed.

Description

Technical Field

[0001] The invention relates to the field of steel pipe pile construction, in particular to a steel pipe pile construction method using a troughing method. Background Art

[0002] Steel pipe pile construction is a basic engineering construction technology, mainly used for the foundation reinforcement and stabilization of structures such as bridges, docks, and buildings. It has the advantages of strong bearing capacity, flexible construction, and fast speed. In infrastructure projects such as large bridges, docks, high-rise buildings, or projects that need to cross rivers, lakes, and other water bodies, the trenching method is usually used to construct steel pipe piles to quickly form a stable support structure to ensure the smooth progress of the project.

[0003] In the prior art, the operation method of constructing steel pipe piles by trenching is usually to first use a trenching machine to excavate a trench of a certain width and depth in a designated area according to design requirements, and then vertically lift the steel pipe piles into the formed trenches in turn, fill the steel pipe piles with concrete, and backfill the gap between the steel pipe piles and the trenches with sand, so as to finally form a stable steel pipe pile structure.

[0004] With regard to the above-mentioned prior art, the excavated slot is larger than the diameter of the steel pipe pile. When the steel pipe pile is installed in the slot, it is not easy to ensure the verticality and accuracy of the position of the steel pipe pile during installation, and thus it is not easy to ensure the molding quality of the final steel pipe pile structure. Summary of the invention

[0005] In order to ensure the verticality and accuracy of the position of the steel pipe pile when it is installed in the slot hole, and thus to ultimately ensure the molding quality of the formed steel pipe pile structure, the present application provides a steel pipe pile construction method using a slotting method.

[0006] The present application provides a steel pipe pile construction method using a troughing method, which adopts the following technical solutions: A steel pipe pile construction method using a slotting method includes the following specific steps: S1, excavating a slot hole in a designated area of ​​soil according to design requirements; S2, after the slot hole is excavated, hardening the area of ​​soil close to the slot hole and the side wall of the slot hole close to the soil, and dividing the slot hole into a plurality of units; S3, installing a positioning frame on the hardened ground, the positioning frame having a guide surface adapted to the outer peripheral surface of the steel pipe pile; S4, hoisting the steel pipe pile into the slot hole, and guiding and installing the steel pipe pile through the guide surfaces of two adjacent positioning frames; S5, after one of the steel pipe piles is installed, removing the positioning frame and installing it to the next steel pipe pile. The position where the pile is guided during installation; S6, repeating steps S4 and S5, after installing the steel pipe piles in one of the units into the slot, installing wing plates on the outer circumference of the first and last steel pipe piles of the unit to separate the two adjacent units; S7, pouring concrete into each steel pipe pile of the same unit in turn, and then backfilling sand into the gap between the steel pipe pile and the slot in the unit to achieve solidification of the unit; S8, after one unit is solidified, construct the next unit, repeating steps S3 to S7 during the construction process, and completing the construction when all the units divided in the slot are solidified.

[0007] By adopting the above technical scheme, during the process of installing the steel pipe pile into the slot hole, the guide surface of the positioning frame plays a role in positioning and guiding the steel pipe pile during installation, thereby facilitating the rapid and accurate installation of the steel pipe pile into the specified position, which is beneficial to ensuring the verticality and accuracy of the position of the steel pipe pile when it is installed into the slot hole, thereby facilitating the ultimate guarantee of the molding quality of the formed steel pipe pile structure. In addition, the setting of guiding each steel pipe pile in turn after the positioning frame is disassembled and assembled facilitates the full recycling of the positioning frame, and the setting of curing each unit in the slot hole in turn facilitates the structural strength of each single unit after curing, thereby further ultimately ensuring the molding quality of the formed steel pipe pile structure.

[0008] Optionally, the positioning frame in step S3 includes a frame body and a positioning member, the frame body is installed on the hardened ground, two positioning members are provided and are respectively slidably engaged on both sides of the frame body in the horizontal direction, two guide surfaces are provided corresponding to the positioning members and are respectively provided on the side of the two positioning members away from the frame body, and the frame body is provided with a positioning motion component for driving the positioning member to move toward or away from the frame body.

[0009] By adopting the above technical solution, after the frame is installed, when the guide surface of the positioning piece and the steel pipe pile have a certain displacement difference, the positioning piece is driven to move toward or away from the frame through the positioning motion component, thereby facilitating the guiding surface of the positioning piece to guide the steel pipe pile at different horizontal positions, and the applicability is strong.

[0010] Optionally, the positioning motion assembly includes a positioning screw, a positioning sleeve, a positioning worm wheel and a positioning worm. The positioning sleeve is horizontally rotatably mounted on the frame, one end of the positioning screw is fixedly mounted on the positioning piece, and the other end is passed through and threadedly engaged with the positioning sleeve. The positioning worm wheel is coaxially fixedly mounted on the positioning sleeve, and the positioning worm is rotatably mounted on the frame and meshes with the positioning worm wheel.

[0011] By adopting the above technical scheme, when force is applied to rotate the positioning worm, the positioning worm wheel drives the positioning sleeve to rotate together, so that the positioning screw drives the positioning member to move toward or away from the frame due to the threaded cooperation with the positioning sleeve and the sliding cooperation between the positioning member and the frame. The setting between the positioning worm wheel and the positioning worm is convenient for reversing the rotation of the positioning screw and easy to operate. On the other hand, it is convenient to ensure the stability of the position of the positioning screw after rotation through its own self-locking effect.

[0012] Optionally, in step S2, the hardened ground is preset with a plurality of fixing holes distributed in the horizontal direction, and the frame is fixedly installed with a plurality of positioning fixing plates, one of which is fixed to the hardened ground by an anchor bolt passing through one of the fixing holes.

[0013] By adopting the above technical solution, the connection between the positioning fixing plate and the hardened ground is convenient and fast, and the positioning frame can be quickly disassembled and assembled, so that the positioning frame can position different steel pipe piles at different positions.

[0014] Optionally, the first and last steel pipe piles of one of the units in step S6 are fixedly installed with limit clamps, and the limit clamps are provided in two groups and are respectively arranged close to the two side walls of the slot, and each group of the limit clamps is provided with two opposite each other, and one of the wing plates is located between the two limit clamps of one group when installed.

[0015] By adopting the above technical solution, the two limit clamps play a role in positioning the wing plate when it is installed, so that it is convenient to quickly install the wing plate to the position when dividing two adjacent units.

[0016] Optionally, the two limiting clamping plates in each group have opposite sides provided with installation positioning grooves extending through the vertical direction, and the wing plate has two installation positioning parts, which are respectively slidably matched with the two installation positioning grooves.

[0017] By adopting the above technical solution, the cooperation between the installation positioning portion and the installation positioning groove plays a further guiding role when installing the wing panel, making it easier to install the wing panel to the desired position more quickly and accurately.

[0018] Optionally, two connecting plates are fixedly installed on the outer peripheral surface of the steel pipe pile in step S4, and the two connecting plates are distributed along the radial direction of the steel pipe pile. The two connecting plates are respectively fixedly connected with a first connecting piece and a second connecting piece on one side away from the steel pipe pile. The cross-section of the first connecting piece is C-shaped, and the cross-section of the second connecting piece is circular. The second connecting piece of one steel pipe pile is plug-fitted with the first connecting piece of the other steel pipe pile, and the first connecting piece is provided with a reinforcement component to ensure the structural stability of the first connecting piece.

[0019] By adopting the above technical solution, the setting of the first connecting member and the second connecting member facilitates the rapid realization of a stable connection between two adjacent steel pipe piles, thereby ensuring the connection stability between the two adjacent steel pipe piles. At the same time, the setting of the reinforcement component makes it less likely for the steel pipe piles to be damaged or deformed due to external forces during installation, thereby facilitating the protection of the first connecting member.

[0020] Optionally, the reinforcement component includes a PVC pipe, and the PVC pipe thread is equipped with a plurality of self-tapping screws distributed along the length direction of the PVC pipe, and each of the self-tapping screws is fixed to the opening on the outer peripheral surface of the first connecting member by spot welding. When the next steel pipe pile is installed after one steel pipe pile is installed, the PVC pipe is removed by an internal support assembly arranged on the drill rod of the rotary drilling rig.

[0021] By adopting the above technical scheme, the setting of the PVC pipe makes the reinforcement structure of the steel pipe pile simple, convenient and stable. The setting of the internal support assembly is convenient to ensure the force stability when the PVC pipe is removed, and then it is convenient to stably remove the PVC pipe from the first connecting piece of the steel pipe pile through the drill rod of the rotary drilling assembly. After the PVC pipe is removed, it is convenient to directly take the PVC pipe out of the steel pipe pile through the vertical movement of the drill rod of the rotary drilling rig.

[0022] Optionally, the inner support assembly includes an inner support sleeve, an inner support telescopic cylinder, an active connecting rod, a driven connecting rod and an inner support plate. The inner support sleeve is fixedly installed on the drill rod of the rotary drilling rig, the inner support telescopic cylinder is fixedly installed on the inner support sleeve, and there are multiple inner support plates evenly distributed circumferentially around the axis of the inner support sleeve. The active connecting rod and the driven connecting rod are arranged in multiple groups corresponding to the inner support plates. One end of the active connecting rod of each group is rotatably connected to the piston rod of the inner support telescopic cylinder, and the other end is rotatably connected to one of the inner support plates. One end of the driven connecting rod of each group is rotatably connected to one of the inner support plates, and the other end is rotatably connected to the inner support sleeve.

[0023] By adopting the above technical solution, when the inner support telescopic cylinder drives its own piston rod to move, each active connecting rod and each driven connecting rod drives each inner support plate to move toward or away from the axis of the inner support sleeve. The setting of the inner support telescopic cylinder makes it convenient and quick to operate each inner support plate to fix the PVC pipe.

[0024] Optionally, the steel pipe pile in step S4 includes a first tube body and a second tube body, the second tube body is coaxially fixed to one end of the first tube body by welding, a ceramic liner is arranged inside the steel pipe pile, the ceramic liner is located between the first tube body and the second tube body, a reinforcing plate is arranged outside the steel pipe pile, a plurality of reinforcing plates are circumferentially distributed around the axis of the steel pipe pile, and one end of each reinforcing plate is welded to the first tube body and the other end is welded to the second tube body.

[0025] By adopting the above technical scheme, the setting of the split steel pipe piles facilitates the production and transportation of the steel pipe piles, the setting of multiple reinforcement plates is conducive to fully ensuring the connection stability of the first pipe body and the second pipe body after being fixed by welding, and the setting of the ceramic liner is conducive to reducing the erosion of the steel pipe piles by harsh environment and improving the service life of the steel pipe piles. On the other hand, it is conducive to reducing the fluid friction resistance of the inner wall of the steel pipe pile and improving the fluid transmission efficiency when pouring concrete in the steel pipe pile.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The guide surface of the positioning frame plays a role in positioning and guiding the steel pipe pile during installation, so that the steel pipe pile can be installed quickly and accurately to the specified position, which is conducive to ensuring the verticality and accuracy of the position of the steel pipe pile when it is installed in the slot hole, and thus facilitating the final guarantee of the molding quality of the formed steel pipe pile structure.

[0027] 2. After the positioning frame is disassembled and assembled, the setting of guiding each steel pipe pile in turn is convenient for realizing the full recycling of the positioning frame. The setting of curing each unit in the slot hole in turn is convenient for ensuring the structural strength of each single unit after curing, thereby further ensuring the molding quality of the formed steel pipe pile structure.

[0028] 3. When there is a certain displacement difference between the guide surface of the positioning piece and the steel pipe pile, by driving the positioning piece to move toward or away from the frame, the guide surface of the positioning piece can guide the steel pipe pile at different horizontal positions, which has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the top view of the structure after the steel pipe piles are installed in Example 1 of the present application.

[0030] Figure 2 It is a schematic diagram of the main structure of the positioning frame in Example 1 of the present application.

[0031] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0032] Figure 4 It is a partially enlarged schematic diagram of the first connecting member in Example 1 of the present application.

[0033] Figure 5 It is a schematic structural diagram of the inner support assembly in Example 1 of the present application.

[0034] Figure 6 It is a schematic diagram of the explosion of the steel pipe pile in Example 1 of the present application.

[0035] Figure 7 It is a schematic diagram of the top view of the structure after the steel pipe piles in Example 2 of the present application are installed.

[0036] Description of reference numerals: 1. Slot hole; 2. Fixing hole; 3. Positioning frame; 301. Frame; 302. Positioning piece; 4. Guide surface; 5. Anchor bolt; 6. Positioning slide block; 7. Positioning slide groove; 8. Positioning screw; 9. Positioning sleeve; 10. Positioning worm gear; 11. Positioning worm; 12. Driving handle; 13. Positioning guide rod; 14. Positioning slide; 15. Steel pipe pile; 151. First pipe body; 152. Second pipe body; 16. Connecting plate; 17. First connecting Connector; 18. Second connecting part; 19. PVC pipe; 20. Self-tapping screw; 21. Inner support sleeve; 22. Inner support telescopic cylinder; 23. Active connecting rod; 24. Driven connecting rod; 25. Inner support plate; 26. Ceramic liner; 27. Reinforcement plate; 28. Wing plate; 29. ​​Limiting card plate; 30. Installation positioning groove; 31. Installation positioning part; 32. Positioning fixing plate; 33. Plug; 34. First plug connector; 35. Second plug connector. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] Example 1.

[0039] The present application embodiment discloses a steel pipe pile construction method using a troughing method. Figure 1 The steel pipe pile construction method using the trenching method includes the following specific steps: S1, excavating a trench hole 1 in a designated area of ​​the soil according to the design requirements.

[0040] S2, continue to refer to Figure 1 After the slot hole 1 is excavated, the area of ​​soil close to the slot hole 1 and the side wall of the slot hole 1 close to the soil are hardened, and the slot hole 1 is divided into a number of units; further, a plurality of fixing holes 2 horizontally distributed along the extension direction of the slot hole 1 are preset on the hardened ground.

[0041] S3, refer to Figure 2 and Figure 3A positioning frame 3 is installed on the hardened ground, and the positioning frame 3 has a guide surface 4 that is compatible with the outer peripheral surface of the steel pipe pile 15; specifically, the positioning frame 3 includes a frame body 301 and a positioning member 302, wherein the frame body 301 is fixedly installed with multiple positioning fixing plates 32, and the number of positioning fixing plates 32 in the embodiment of the present application is selected as two, and the two positioning fixing plates 32 are fixed to the hardened ground by anchor bolts 5 that are sequentially penetrated through themselves and one of the fixing holes 2.

[0042] Reference Figure 3 There are two positioning members 302, which are respectively located on both sides of the frame 301 along the horizontal extension direction of the slot hole 1. The positioning members 302 are fixedly connected with positioning slide blocks 6. The frame 301 is provided with two positioning slide grooves 7 horizontally arranged along the extension direction of the slot hole 1 on one side facing the positioning members 302. The two positioning slide blocks 6 are respectively slidably matched in the two positioning slide grooves 7, so that the positioning members 302 and the frame 301 can slide and match. Two guide surfaces 4 are respectively arranged corresponding to the positioning members 302. The two guide surfaces 4 are respectively arranged on the side of the two positioning members 302 away from the frame 301, that is, the side away from the two positioning members 302, so as to realize the guiding effect of installing the steel pipe pile 15 through the guide surfaces 4 of the two adjacent positioning frames 3.

[0043] Continue to refer to Figure 3 The frame 301 is provided with a positioning motion component, and two groups of positioning motion components are provided corresponding to the positioning member 302. The positioning motion component includes a positioning screw 8, a positioning sleeve 9, a positioning worm wheel 10 and a positioning worm 11. The positioning sleeve 9 is horizontally rotatably installed on the frame 301, one end of the positioning screw is fixedly installed on the positioning member 302, and the other end is coaxially penetrated and threadedly matched with the positioning sleeve 9. The positioning worm wheel 10 is coaxially fixedly installed on the positioning sleeve 9, and the positioning worm 11 is vertically rotatably installed on the frame 301 and meshes with the positioning worm wheel 10. A driving handle 12 is fixedly connected to the top of the positioning worm 11. When the positioning worm 11 is driven to rotate by the driving handle 12, the positioning worm wheel 10 drives the positioning sleeve 9 to rotate around its own axis, so that the positioning screw drives the positioning member 302 to move toward or away from the frame 301.

[0044] Reference Figure 2 and Figure 3 In order to further ensure the stability of the positioning member 302 during movement, the two positioning members 302 are fixedly connected to the adjacent sides thereof with a positioning guide rod 13, and the frame body 301 is fixedly installed with two positioning slide cylinders 14 horizontally arranged along the extension direction of the slot hole 1, and the two positioning guide rods 13 are respectively passed through and slidably engaged in the two positioning slide cylinders 14, so as to further limit the sliding movement of the positioning member 302.

[0045] S4, ref. Figure 1 and Figure 3, lift the steel pipe pile 15 into the slot hole 1, and guide and install the steel pipe pile 15 through the guide surfaces 4 of the two adjacent positioning frames 3; specifically, two connecting plates 16 are fixedly connected to the outer circumference of the steel pipe pile 15, and the two connecting plates 16 are distributed along the radial direction of the steel pipe pile 15. When the steel pipe pile 15 is installed in the slot hole 1, the two connecting plates 16 are respectively located on both sides of the steel pipe pile 15 along the extension direction of the slot hole 1.

[0046] Continue to refer to Figure 1 and Figure 3 The two connecting plates 16 are fixedly connected with a first connecting piece 17 and a second connecting piece 18 on one side away from the steel pipe pile 15, respectively. The cross section of the first connecting piece 17 is C-shaped, and the cross section of the second connecting piece 18 is circular. The second connecting piece 18 of one steel pipe pile 15 is plugged into the first connecting piece 17 of another steel pipe pile 15. When the steel pipe pile 15 is installed, the second connecting piece 18 of the steel pipe pile 15 is inserted into the first connecting piece 17, which is beneficial to ensure the connection stability between the two adjacent steel pipe piles 15.

[0047] Reference Figure 3 and Figure 4 In order to ensure the structural stability of the first connecting member 17 when it is installed into the slot 1 together with the steel pipe pile 15, a reinforcement component is provided in the first connecting member 17. Specifically, the reinforcement component includes a PVC pipe 19. The PVC pipe 19 is threaded with two groups of self-tapping screws 20. Each group of self-tapping screws 20 is evenly distributed along the length direction of the PVC pipe 19. Each tapping screw 20 of each group is fixed to the C-shaped opening side of the outer peripheral surface of the first connecting member 17 by spot welding, so as to ensure the structural stability of the steel pipe pile 15 through the limiting effect of the PVC pipe 19 and the self-tapping screws 20. After the steel pipe pile 15 is installed, the PVC pipe 19 is stably taken out of the first connecting member 17 by the inner support component provided on the drill rod of the rotary drilling rig.

[0048] Reference Figure 4 and Figure 5 The inner support assembly includes an inner support sleeve 21, an inner support telescopic cylinder 22, an active connecting rod 23, a driven connecting rod 24 and an inner support plate 25. Specifically, the inner support sleeve 21 is fixedly installed on the drill rod of the rotary drilling rig, the cylinder body of the inner support telescopic cylinder 22 is fixedly installed on the inner support sleeve 21, and one end of the piston rod of the inner support telescopic cylinder 22 is passed through the outside of the inner support sleeve 21. In the embodiment of the present application, the inner support telescopic cylinder 22 is selected as a cylinder.

[0049] Reference Figure 5There are multiple inner support plates 25 evenly distributed around the axis of the inner support sleeve 21. In the embodiment of the present application, the number of inner support plates 25 is selected as three. The side of each inner support plate 25 away from the inner support sleeve 21 is arranged in an arc shape that fits the inside of the PVC pipe 19. The active connecting rod 23 and the driven connecting rod 24 are arranged in three groups corresponding to the inner support plates 25. One end of the active connecting rod 23 of each group is rotatably connected to the piston rod of the inner support telescopic cylinder 22, and the other end is rotatably connected to one of the inner support plates 25. One end of the driven connecting rod 24 of each group is rotatably connected to one of the inner support plates 25, and the other end is rotatably connected to the piston rod of the inner support telescopic cylinder 22. It is movably connected to the inner support sleeve 21, so that when the inner support telescopic cylinder 22 drives its own piston rod to move, each active connecting rod 23 and the driven connecting rod 24 drive each inner support plate 25 to move toward or away from the axis of the inner support sleeve 21. The arrangement of the inner support telescopic cylinder 22 makes it convenient and quick for each inner support plate 25 to perform internal support and fixation on the PVC pipe 19, and it is also convenient to ensure the force stability when the PVC pipe 19 is removed. In addition, after the PVC pipe 19 is removed, the PVC pipe 19 can be directly taken out of the steel pipe pile 15 through the vertical movement of the drill rod of the rotary drilling rig, which is more efficient.

[0050] Reference Figure 6 Furthermore, in order to facilitate the production and transportation of the steel pipe pile 15, the steel pipe pile 15 in the embodiment of the present application includes a first tube body 151 and a second tube body 152. The second tube body 152 is coaxially fixed to one end of the length direction of the first tube body 151 by welding. A ceramic liner 26 is provided inside the steel pipe pile 15. The ceramic liner 26 is located between the first tube body 151 and the second tube body 152 to reduce the erosion of the connection between the first tube body 151 and the second tube body 152 by the harsh environment, thereby improving the service life of the steel pipe pile 15. A reinforcing plate 27 is provided outside the steel pipe pile 15. A plurality of reinforcing plates 27 are evenly distributed around the axis of the steel pipe pile 15. One end of each reinforcing plate 27 is welded to the first tube body 151 and the other end is welded to the second tube body 152, thereby fully ensuring the connection stability of the first tube body 151 and the second tube body 152 after being fixed by welding.

[0051] S5, Replay Figure 2 After one steel pipe pile 15 is installed, the positioning frame 3 is removed and installed to the position for guiding the installation of the next steel pipe pile 15; further, after two adjacent positioning frames 3 are installed to the hardened ground, they are respectively located on the two side walls of the slot 1, so as to achieve stable guidance for the steel pipe pile 15 during installation.

[0052] S6, ref. Figure 1 and Figure 3, repeat steps S4 and S5, after the steel pipe piles 15 in one of the units are installed into the slot hole 1, wing plates 28 are installed on the outer circumferential surface of the first and last steel pipe piles 15 of the unit to separate the two adjacent units; specifically, the first and last steel pipe piles 15 of one of the units are fixedly installed with limit clamps 29, and the limit clamps 29 are distributed in two groups along the radial direction of the steel pipe piles 15 and are respectively arranged close to the two side walls of the slot hole 1, and each group of limit clamps 29 is directly arranged with two, and one unit is provided with four wing plates 28, and each wing plate 28 is respectively located between two limit clamps 29 of one group when installed.

[0053] Reference Figure 3 In order to further ensure the guiding stability of the wing plate 28 during installation, a mounting positioning groove 30 is provided on the side opposite to the two limiting clamps 29 of each group and is penetrated in the vertical direction. The wing plate 28 has two mounting positioning parts 31, and the two mounting positioning parts 31 are respectively slidably matched with the two mounting positioning grooves 30. When the wing plate 28 is installed between the two limiting clamps 29 of one group, the two mounting positioning parts 31 are respectively located in the two mounting positioning grooves 30, so as to play a further limiting role when the wing plate 28 is installed.

[0054] S7, pouring concrete into each steel pipe pile 15 of the same unit in turn, and then backfilling the gap between the steel pipe pile 15 and the slot 1 in the unit with sand to achieve solidification of the unit.

[0055] S8, after one unit is solidified, the next unit is constructed, and steps S3 to S7 are repeated during the construction process. When all the units divided in the slot 1 are solidified, the construction is completed.

[0056] The implementation principle of a steel pipe pile construction method using a grooving method in an embodiment of the present application is as follows: during the construction process, when the steel pipe pile 15 is installed into the slot hole 1, the guide surfaces 4 of the two adjacent positioning frames 3 play a role in positioning and guiding the steel pipe pile 15 during installation, thereby facilitating the rapid and accurate installation of the steel pipe pile 15 into the specified position, which is beneficial to ensuring the verticality and accuracy of the position of the steel pipe pile 15 when it is installed into the slot hole 1, and further facilitating the ultimate guarantee of the molding quality of the formed steel pipe pile 15 structure. In addition, the arrangement of guiding each steel pipe pile 15 in turn after the positioning frame 3 is disassembled and assembled facilitates the full recycling of the positioning frame 3, and the arrangement of curing each unit in the slot hole 1 in turn facilitates the structural strength of each single unit after curing, thereby further ultimately ensuring the molding quality of the formed steel pipe pile 15 structure.

[0057] Example 2.

[0058] The main difference between the embodiment of the present application and the embodiment 1 is that in step S6, after the wing plates 28 are installed on the outer circumference of the first and last steel pipe piles of one unit, plugs 33 are installed to further ensure the stability of the position of the wing plates 28 when separating two adjacent units. Specifically, two plugs 33 are provided, and after installation, the two plugs 33 are respectively abutted against the side of each wing plate 28 facing the steel pipe pile of the other unit to stably limit the position of the wing plate 28.

[0059] Furthermore, the two plugs 33 are respectively fixedly connected with a first plug connector 34 and a second plug connector 35, and the first plug connector 34 and the second plug connector 35 have the same structure as the first connector 17 and the second connector 18, so that the first plug connector 34 and the second plug connector 35 can fully ensure the stability of their own positions by plugging with the second connector 18 and the first connector 17 respectively.

[0060] The implementation principle of Example 2 of the present application is the same as that of Example 1, so it will not be repeated here.

[0061] 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 steel pipe pile construction method using a troughing method, characterized in that: The method comprises the following specific steps: S1, excavating a slot hole in a designated area of ​​soil according to design requirements (1); S2, after the slot hole (1) is excavated, the area of ​​soil close to the slot hole (1) and the side wall of the slot hole (1) close to the soil are hardened, and the slot hole (1) is divided into a plurality of units; S3, installing a positioning frame (3) on the hardened ground, wherein the positioning frame (3) has a guide surface (4) adapted to the outer peripheral surface of the steel pipe pile (15); S4, hoisting the steel pipe pile (15) into the slot hole (1), and guiding and installing the steel pipe pile (15) through the guide surfaces (4) of two adjacent positioning frames (3); S5, after one of the steel pipe piles (15) is installed, the positioning frame (3) is removed and installed to a position where it is used to guide the installation of the next steel pipe pile (15); S6, repeating steps S4 and S5, after the steel pipe piles (15) in one of the units are installed into the slots (1), wing plates (28) are installed on the outer circumferences of the first and last steel pipe piles (15) of the unit to separate two adjacent units; S7, pouring concrete into each steel pipe pile (15) of the same unit in turn, and then backfilling the gap between the steel pipe pile (15) and the slot hole (1) in the unit with sand to achieve solidification of the unit; S8, after one unit is solidified, the next unit is constructed, and steps S3 to S7 are repeated during the construction process. When all the units divided in the slot (1) are solidified, the construction is completed.

2. A steel pipe pile construction method using a troughing method according to claim 1, characterized in that: The positioning frame (3) in step S3 includes a frame body (301) and a positioning member (302), the frame body (301) is installed on a hardened ground, two positioning members (302) are provided and are respectively slidably engaged with both sides of the frame body (301) in a horizontal direction, two guide surfaces (4) are provided corresponding to the positioning members (302) and are respectively provided on the side of the two positioning members (302) away from the frame body (301), and the frame body (301) is provided with a positioning motion component for driving the positioning member (302) to move toward or away from the frame body (301).

3. A steel pipe pile construction method using a troughing method according to claim 2, characterized in that: The positioning motion assembly comprises a positioning screw (8), a positioning sleeve (9), a positioning worm wheel (10) and a positioning worm (11); the positioning sleeve (9) is horizontally rotatably mounted on the frame (301); one end of the positioning screw is fixedly mounted on the positioning member (302), and the other end is passed through and threadedly engaged with the positioning sleeve (9); the positioning worm wheel (10) is coaxially fixedly mounted on the positioning sleeve (9); and the positioning worm (11) is rotatably mounted on the frame (301) and meshes with the positioning worm wheel (10).

4. A steel pipe pile construction method using a troughing method according to claim 2, characterized in that: In step S2, the hardened ground is preset with a plurality of fixing holes (2) distributed in the horizontal direction, and the frame (301) is fixedly mounted with a plurality of positioning fixing plates (32), wherein one of the positioning fixing plates (32) is fixed to the hardened ground via an anchor bolt (5) penetrated through one of the fixing holes (2).

5. The steel pipe pile construction method using the troughing method according to claim 1, characterized in that: The first and last steel pipe piles (15) of one of the units in step S6 are fixedly installed with limit clamps (29), and the limit clamps (29) are provided in two groups and are respectively arranged close to the two side walls of the slot hole (1), and each group of the limit clamps (29) is provided with two oppositely arranged, and one of the wing plates (28) is located between the two limit clamps (29) of one group when installed.

6. A steel pipe pile construction method using a troughing method according to claim 5, characterized in that: The two limit clamping plates (29) of each group are provided with a mounting positioning groove (30) extending through the wing plate (28) in a vertical direction on the opposite side thereof. The wing plate (28) has two mounting positioning portions (31), and the two mounting positioning portions (31) are respectively slidably matched with the two mounting positioning grooves (30).

7. The steel pipe pile construction method using the troughing method according to claim 1, characterized in that: In step S4, two connecting plates (16) are fixedly installed on the outer peripheral surface of the steel pipe pile (15), and the two connecting plates (16) are distributed along the radial direction of the steel pipe pile (15). The two connecting plates (16) are respectively fixedly connected with a first connecting piece (17) and a second connecting piece (18) on the side away from the steel pipe pile (15). The cross section of the first connecting piece (17) is C-shaped, and the cross section of the second connecting piece (18) is circular. The second connecting piece (18) of one steel pipe pile (15) is plug-fitted with the first connecting piece (17) of the other steel pipe pile (15), and a reinforcing component is arranged inside the first connecting piece (17) to ensure the structural stability of the first connecting piece (17).

8. A steel pipe pile construction method using a troughing method according to claim 7, characterized in that: The reinforcement component comprises a PVC pipe (19), the PVC pipe (19) is threadedly matched with a plurality of self-tapping screws (20) distributed along the length direction of the PVC pipe (19), each of the self-tapping screws (20) is fixed to an opening of the outer peripheral surface of the first connecting member (17) by spot welding, and when the next steel pipe pile (15) is installed after one of the steel pipe piles (15) is installed, the PVC pipe (19) is removed by an internal support component arranged on the drill rod of the rotary drilling rig.

9. A steel pipe pile construction method using a troughing method according to claim 7, characterized in that: The inner support assembly comprises an inner support sleeve (21), an inner support telescopic cylinder (22), an active connecting rod (23), a driven connecting rod (24) and an inner support plate (25); the inner support sleeve (21) is fixedly mounted on a drill pipe of a rotary drilling rig; the inner support telescopic cylinder (22) is fixedly mounted on the inner support sleeve (21); a plurality of inner support plates (25) are evenly distributed circumferentially around the axis of the inner support sleeve (21); a plurality of active connecting rods (23) and driven connecting rods (24) are arranged in correspondence with the inner support plates (25); one end of the active connecting rod (23) of each group is rotatably connected to a piston rod of the inner support telescopic cylinder (22) and the other end is rotatably connected to one of the inner support plates (25); one end of the driven connecting rod (24) of each group is rotatably connected to one of the inner support plates (25) and the other end is rotatably connected to the inner support sleeve (21).

10. The steel pipe pile construction method using the troughing method according to claim 1, characterized in that: The steel pipe pile (15) in step S4 comprises a first pipe body (151) and a second pipe body (152), wherein the second pipe body (152) is coaxially fixed to one end of the first pipe body (151) by welding, a ceramic liner (26) is arranged inside the steel pipe pile (15), and the ceramic liner (26) is located between the first pipe body (151) and the second pipe body (152), and a reinforcing plate (27) is arranged outside the steel pipe pile (15), wherein a plurality of reinforcing plates (27) are circumferentially distributed around the axis of the steel pipe pile (15), and one end of each reinforcing plate (27) is welded to the first pipe body (151), and the other end is welded to the second pipe body (152).

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