Tapered thread expansion support pile structure and application process thereof

Abstract

The application relates to a taper thread expanding support pile structure and an application process thereof, and relates to the technical field of foundation pit support piles. The taper thread expanding support pile structure comprises a receiving column and a ground drilling cone head. Thread protrusions are arranged on the outer side wall of the ground drilling cone head. An abutting plate for abutting against a foundation is arranged at the end of the receiving column far from the ground drilling cone head. An abutting channel for sleeving the abutting plate on the receiving column is arranged on the abutting plate. A plurality of plug-in mechanisms are arranged on the abutting plate, and the plug-in mechanisms are used for positioning the abutting plate on the foundation. The application process comprises the following application steps: plugging in, positioning and reinforcing. The application has the effect of improving the support stability of the support pile.

Description

Technical Field

[0001] This application relates to the field of support pile technology, and in particular to a tapered thread enlarged support pile structure and its application process. Background Technology

[0002] Support piles are a common type of pile used to withstand lateral thrust, and are generally used for foundation pit support, slope support, etc.

[0003] Currently, the installation of retaining piles on construction sites involves drilling holes in the construction area, draining the water from the holes using a drill bit, inserting reinforcing bars, and then pouring in concrete grout. Once the concrete grout has solidified, the retaining piles are formed. By installing retaining piles around the location where a foundation pit needs to be excavated, the stability of the soil surrounding the pit can be improved during the excavation process.

[0004] However, the contact area between the drilled and cast-in-place support piles and the surrounding soil is usually limited. The stability of the support piles relies more on the contact between the bottom of the pile and the soil and the friction between the side wall of the pile and the soil. They are easily affected by soil settlement, which can lead to unstable support performance. Summary of the Invention

[0005] To address the issue of low stability in support piles, this application provides a tapered thread enlarged support pile structure and its application process.

[0006] Firstly, this application provides a tapered thread enlarged support pile structure, which adopts the following technical solution: A tapered threaded expansion support pile structure includes a bearing column and a drilling cone. The outer wall of the drilling cone is provided with threaded protrusions. The end of the bearing column away from the drilling cone is provided with an abutment plate for pressing against the foundation. The abutment plate is provided with an abutment channel for fitting the abutment plate onto the bearing column. The abutment plate is provided with multiple insertion mechanisms for positioning the abutment plate on the foundation.

[0007] By adopting the above technical solution, the bearing column can squeeze the drilling cone and the foundation around the bearing column to both sides through the threaded protrusions set on the drilling cone, making the foundation near the bearing column more compact. After the bearing column is connected to the abutment plate, the abutment plate can abut against the foundation, thereby increasing the contact area between the bearing column and the foundation. The insertion mechanism on the abutment plate can make the abutment plate press firmly against the foundation.

[0008] In one specific implementation, the insertion mechanism includes an anchoring cylinder and an anchoring screw. The anchoring cylinder passes through the abutment plate and is inserted into the foundation. The anchoring screw is threaded through the anchoring cylinder, and one end of the anchoring screw passing through the anchoring cylinder can abut into the foundation. An anchoring handwheel is provided on the end of the anchoring screw away from the foundation.

[0009] By adopting the above technical solution, operators can make the anchoring screw pass through the anchoring cylinder and be driven into the foundation by turning the anchoring handwheel. The anchoring screw and the anchoring cylinder further improve the support stability of the support column.

[0010] In one specific implementation, a grouting groove is provided on the anchoring rod along its axial direction. The end of the grouting groove away from the anchoring handwheel is closed. Several grouting channels are provided through the side wall of the anchoring rod at the grouting groove. The grouting groove is used to receive concrete slurry, and the grouting channels are used to allow the concrete slurry in the anchoring groove to enter the soil layer around the anchoring rod.

[0011] By adopting the above technical solution, the concrete grout enters the foundation around the anchor rod through the grouting trench and grouting channel and then solidifies, which increases the contact area between the anchor rod and the foundation, thereby improving the stability of the anchor rod in the foundation.

[0012] In one specific implementation scheme, the tapered thread enlarged support pile structure further includes a positioning mechanism, which includes multiple limiting strips. The limiting strips are disposed on the side wall of the receiving column and located above the foundation. A limiting channel for matching the limiting strips is provided through the abutment plate, and the limiting channel is located on the abutment channel. The abutment plate is also provided with a locking component, which is disposed on the side wall of the abutment plate away from the foundation. The locking component can be connected to the limiting strips to position the abutment plate on the foundation.

[0013] By adopting the above technical solution, the locking component on the abutment plate can be connected to the limiting strip on the bearing column, so that the abutment plate can be fixed together with the bearing column through the locking component. When the abutment plate abuts against the foundation, the bearing capacity of the bearing column can be further improved through the abutment plate abutting against the foundation.

[0014] In one specific implementation, the locking assembly includes a locking handwheel, a locking screw, and a support block. The support block is disposed on the side wall of the abutment plate away from the foundation. The locking screw is threaded onto the support block. The limiting strip has a locking groove on the side wall facing the locking assembly. The locking screw passes through the support block and is connected to the limiting strip through the locking groove. The locking handwheel is disposed at the end of the locking screw away from the support block.

[0015] By adopting the above technical solution, the locking screw thread passes through the support block and is connected to the limiting strip on the receiving column. By connecting the support block and the limiting strip, the abutment plate and the receiving column are fixed.

[0016] In one specific implementation scheme, a reinforcement mechanism is further provided between each anchoring cylinder and the receiving column. Each reinforcement mechanism includes a first steel cable, a reinforcement ring, and a fixing hook. The reinforcement ring is disposed on the side wall of the anchoring cylinder and located at the position of the anchoring cylinder facing the receiving column. The fixing hook is disposed at one end of the first steel cable along its length. One end of the first steel cable is connected to the reinforcement ring through the fixing hook, and the other end of the first steel cable is disposed on the side wall of the receiving column.

[0017] By adopting the above technical solution, the first steel cable can be connected to the anchoring cylinder through the reinforcing ring and the fixing hook. At the same time, the other end of the first steel cable is set on the side wall of the bearing column and is located at the end of the bearing column above the foundation, so that the anchoring cylinder tightens the bearing column through the first steel cable, thereby improving the horizontal bearing capacity of the bearing column.

[0018] In one specific implementation scheme, a tensioning mechanism is provided on the first steel cable, and a positioning part is provided on the side wall of the abutment plate away from the foundation, and the positioning part is located below the tensioning mechanism. The tensioning mechanism includes a second steel cable, a tensioning screw, and a tensioning cylinder. One end of the second steel cable is provided on the first steel cable, the tensioning screw is provided at the end of the second steel cable away from the first steel cable, one end of the tensioning cylinder is threaded to the tensioning screw, and the end of the tensioning cylinder away from the tensioning screw can be threaded to the positioning part. The tensioning cylinder is used to tension or loosen the second steel cable.

[0019] By adopting the above technical solution, the tensioning cylinder can adjust the tension provided by the second steel cable to the first steel cable, so that the first steel cable can maintain tension on the anchoring cylinder and the supporting column.

[0020] In one specific implementation, the positioning part includes a positioning screw, a fixing block, and a positioning bolt. The fixing block is disposed on the abutment plate and is located on the side wall of the abutment plate away from the foundation. The positioning bolt passes through the fixing block and is connected to the abutment plate so that the fixing block is pressed against the abutment plate. The positioning screw is disposed on the side wall of the fixing block away from the foundation, and the end of the tensioning cylinder away from the tensioning screw is connected to the positioning screw.

[0021] By adopting the above technical solution, the fixing block and the positioning screw are set on the abutment plate, so that the tensioning screw is fixed on the positioning screw through the tensioning screw cylinder. The distance between the tensioning screw and the positioning screw is adjusted by adjusting the tensioning screw cylinder, thereby adjusting the tension of the second steel cable.

[0022] Secondly, this application also discloses an application process for a tapered thread enlarged support pile structure, the application process including the following application steps: Insertion: The receiving post is inserted into the foundation through the drilling cone and the threaded protrusion on the drilling cone; Positioning: The end of the abutment plate, located on the foundation, is fitted onto the abutment column from the abutment channel, away from the drilling cone. Reinforcement: The insertion mechanism passes through the abutment plate and is inserted into the foundation, so that the abutment plate is pressed tightly against the foundation. The support stability of the support column is improved through the contact between the abutment plate and the foundation.

[0023] In summary, this application has the following beneficial technical effects: 1. By setting an abutment plate at one end of the support column located on the foundation, the contact area between the support column and the foundation is increased through the abutment plate. The abutment plate is fixed to the support column through the insertion mechanism and the positioning mechanism, thereby reducing the impact of soil settlement and other factors on the support pile and improving the support stability of the support pile.

[0024] 2. By setting up a reinforcement mechanism between the anchoring cylinder and the bearing column, the horizontal bearing capacity of the bearing column is further improved, and the support stability of the bearing column is enhanced. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a structure in one embodiment of this application; Figure 2 This is a schematic diagram of the installation of the abutment plate and the supporting column in an embodiment of this application; Figure 3 This is a schematic diagram showing the connection relationship between the anchoring cylinder and the anchoring threaded rod in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the injection tank and injection channel in the embodiments of this application; Figure 5 This is a schematic diagram of the reinforcement mechanism in the embodiments of this application; Figure 6 This is a schematic diagram showing the connection relationship between the tensioning mechanism and the positioning part in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1. Supporting column; 11. Drilling cone; 111. Threaded protrusion; 2. Abutment plate; 21. Abutment channel; 22. Limiting channel; 3. Positioning mechanism; 31. Limiting strip; 32. Locking groove; 4. Locking assembly; 41. Support block; 42. Locking screw; 421. Locking handwheel; 5. Insertion mechanism; 51. Anchoring cylinder; 52. Anchoring screw; 521. Anchoring handwheel; 522. Injection groove; 523. Injection channel; 6. Reinforcing mechanism; 61. First steel cable; 62. Reinforcing ring; 63. Fixing hook; 7. Tensioning mechanism; 71. Second steel cable; 72. Tensioning screw; 73. Tensioning cylinder; 8. Positioning part; 81. Positioning screw; 82. Fixing block; 83. Positioning bolt. Detailed Implementation

[0027] This application discloses a tapered thread enlarged support pile structure and its application process.

[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0029] Reference Figure 1 A tapered threaded expanded support pile structure includes a receiving column 1 and a drilling cone 11. In this embodiment, the receiving column 1 can be a cylindrical stainless steel column. The drilling cone 11 is integrally formed at one end along the length of the receiving column 1, and the drilling cone 11 can be a conical stainless steel cone.

[0030] Reference Figure 1 A threaded protrusion 111 is welded on the outer wall of the drilling cone 11 away from the receiving column 1. The threaded protrusion is distributed along the axial direction of the drilling cone.

[0031] Reference Figure 1 The operator first uses a auger drill to drill positioning holes in the foundation where the support piles need to be installed. Simultaneously, the operator drills several threaded holes at the end of the support column 1 furthest from the drilling cone 11 for connection to the output end of the auger drill. After the positioning holes in the foundation are drilled, the operator uses bolts to connect the output end of the auger drill to the threaded holes at the end of the support column 1 furthest from the drilling cone 11. Then, the support column 1 is erected, and the drilling cone 11 is brought into contact with the positioning holes in the foundation. The auger drill is then started, causing the support column 1 to pass through the threaded protrusions 111 on the outer wall of the drilling cone 11, clearing away the soil around the drilling cone 11 and allowing the support column 1 to be auger-driven into the foundation.

[0032] Reference Figure 1 and Figure 2 The receiving column 1 is located at the end away from the drilling cone 11, and several limiting strips 31 with the same outer circumferential size are provided on the side wall of the receiving column 1. In this embodiment, the number of limiting strips 31 can be four. Each limiting strip 31 is welded to the side wall of the receiving column 1 and is located at the end of the receiving column 1 away from the drilling cone 11. The four limiting strips 31 are evenly distributed along the outer side wall of the receiving column 1, and the distance between any two adjacent limiting strips 31 is equal.

[0033] Reference Figure 2The supporting column 1 is provided with an abutment plate 2 at one end above the foundation for abutting against the foundation. The abutment plate 2 has an abutment channel 21 that runs through the abutment plate 2 and is located in the middle of the abutment plate 2. When the abutment plate 2 is fitted onto the supporting column 1 and abuts against the foundation, the abutment plate 2 can provide a bearing force for the supporting column 1 when it is subjected to load forces in different directions, so as to ensure the positional stability and application stability of the supporting column 1 on the foundation.

[0034] Reference Figure 2 The inner circumferential dimension of the abutment channel 21 is the same as the outer circumferential dimension of the end of the support column 1 away from the foundation. A limiting channel 22 is opened on the abutment plate 2, and the limiting channel 22 penetrates the abutment plate 2. Each limiting channel 22 is connected to the inner cavity of the abutment channel 21.

[0035] Reference Figure 2 The number of limiting channels 22 is the same as the number of limiting bars 31. The inner circumference of each limiting channel 22 is the same as the outer circumference of each limiting bar 31. Each limiting channel 22 corresponds to one limiting bar 31.

[0036] Reference Figure 2 The operator places the abutment plate 2 onto the support column 1 from the end of the support column 1 away from the drilling cone 11 through the abutment channel 21. At the same time, each limiting channel 22 on the abutment plate 2 corresponds to each limiting strip 31 on the support column 1, so that a limiting strip 31 can be inserted into each limiting channel 22. The operator then abuts the inner wall of the limiting channel 22 against the outer wall of the limiting strip 31, so that the abutment plate 2 can be positioned on the support column 1, thereby improving the connection strength between the abutment plate 2 and the support column 1.

[0037] Reference Figure 2 The abutment plate 2 has a number of locking components 4 on its side wall away from the foundation, the same number as the limiting strips 31. Each locking component 4 includes a support block 41, a locking screw 42, and a locking handwheel 421. The support block 41 is welded to the abutment plate 2 and is located on the side wall of the abutment plate 2 away from the foundation. Each support block 41 is close to a limiting strip 31. Each limiting strip 31 has a locking groove 32 on its side wall facing the support block 41. In this embodiment, the locking groove 32 can be a threaded groove that is threaded to the locking screw 42.

[0038] Reference Figure 2The locking handwheel 421 is integrally formed on one end of the locking screw 42. The operator creates a threaded hole from the end of the support block 41 furthest from the limiting strip 31, facing towards the limiting strip 31. The threaded hole is on the same horizontal line as the locking groove 32. The operator then rotates the locking screw 42 through the locking handwheel 421 from the end of the support block 41 furthest from the limiting strip 31, causing the locking screw 42 to be threaded into the threaded hole of the support block 41 from the end of the support block 41 furthest from the limiting strip 31, and then out from the end of the support block 41 closest to the limiting strip 31, where it is threaded into the locking groove 32. The support block 41 is fixed to the limiting strip 31 via the locking screw 42, thus allowing the abutment plate 2 to be fixed to the receiving column 1 through the connection between the support block 41 and the limiting strip 31.

[0039] Reference Figure 1 and Figure 3 An anchor cylinder 51 is provided on the abutment plate 2, and the anchor cylinder 51 is located at the four corners of the abutment plate 2. Each anchor cylinder 51 has an anchoring rod 52 threaded on its side wall. An anchoring hole is opened at each of the four corners of the abutment plate 2, and the anchoring hole penetrates the abutment plate 2. The operator places the anchor cylinder 51 into the anchoring hole, and then taps the anchor cylinder 51 from the end away from the foundation, so that the anchor cylinder 51 can penetrate the abutment plate 2 and enter the foundation. After one end of the anchor cylinder 51 enters the foundation, the operator welds the anchor cylinder 51 to the abutment plate 2 to fix the anchor cylinder 51 to the abutment plate 2.

[0040] Reference Figure 3 Each anchoring rod 52 has an anchoring handwheel 521 welded to one end. The operator places the end of the anchoring rod 52 away from the anchoring handwheel 521 at the end of the anchoring cylinder 51 away from the foundation. Then, the operator screws the anchoring handwheel 521 so that the anchoring rod 52 can be threaded into the anchoring cylinder 51 and inserted into the foundation.

[0041] Reference Figure 3 and Figure 4 Each anchor rod 52 is provided with an injection groove 522, and the injection groove 522 is arranged along the axial direction of the anchor rod 52. The end of the anchor rod 52 away from the anchor handwheel 521 is closed. Several injection channels 523 are also provided on the side wall of the anchor rod 52, and the injection channels 523 are located on the injection groove 522.

[0042] Reference Figure 3 and Figure 4In this embodiment, each anchor rod 52 can have four grouting channels 523. The operator allows concrete grout to enter the grouting groove 522 from the end of the anchor rod 52 where the anchoring handwheel 521 is located. The concrete grout can enter the foundation around the anchor rod 52 through the grouting channels 523, thereby increasing the contact area between each anchor rod 52 and the foundation.

[0043] Reference Figure 1 and Figure 5 Several reinforcing mechanisms 6 are provided between the anchoring cylinder 51 and the supporting column 1. Each reinforcing mechanism 6 includes a first steel cable 61, a reinforcing ring 62, and a fixing hook 63. In this embodiment, the first steel cable 61 is a flexible steel cable. One end of the first steel cable 61 is welded to the supporting column 1. The fixing hook 63 is welded to the end of the first steel cable 61 away from the supporting column 1. The reinforcing ring 62 is welded to the outer wall of the anchoring cylinder 51 and is located above the abutment plate 2.

[0044] Reference Figure 1 and Figure 5 The operator hangs one end of the first steel cable 61 with a fixing hook 63 on the reinforcing ring 62 through the fixing hook 63, and then welds the end of the first steel cable 61 away from the fixing hook 63 to the side wall of the support column 1 away from the foundation and close to the anchor cylinder 51, so that the first steel cable 61 can be connected between the support column 1 and the anchor cylinder 51.

[0045] Reference Figure 5 and Figure 6 Each first steel cable 61 is also equipped with a tensioning mechanism 7, which includes a second steel cable 71, a tensioning screw 72, and a tensioning cylinder 73. One end of the second steel cable 71 is welded to the first steel cable 61, and the tensioning screw 72 is welded to the end of the second steel cable 71 that is away from the first steel cable 61. The tensioning cylinder 73 is threadedly connected to the end of the tensioning screw 72 that is away from the first steel cable 61.

[0046] Reference Figure 5 and Figure 6 When the second steel cable 71 is subjected to a vertical downward tension, the first steel cable 61 can simultaneously tension the anchoring cylinder 51 and the supporting column 1, so that the anchoring cylinder 51 applies tension to the supporting column 1 through the first steel cable 61.

[0047] Reference Figure 6On the side wall of the abutment plate 2 away from the foundation, and below each tensioning screw 72, a positioning part 8 is also provided. The number of positioning parts 8 is the same as the number of tensioning screws 72. The positioning part 8 includes a positioning screw 81, a fixing block 82, and a positioning bolt 83. The positioning screw 81 is integrally formed on the fixing block 82. After the operator places the fixing block 82 below the tensioning screw 72, so that the positioning screw 81 faces the tensioning screw 72, the positioning bolt 83 passes through the fixing block 82 and is threaded onto the abutment plate 2, thus fixing the fixing block 82 onto the abutment plate 2.

[0048] Reference Figure 5 and Figure 6 The thread direction of the positioning screw 81 is opposite to that of the tensioning screw 72. The end of the tensioning cylinder 73 away from the tensioning screw 72 is threaded onto the positioning screw 81. When the operator screws the tensioning cylinder 73, the tensioning screw 72 is brought closer to the positioning screw 81, thereby tightening the second steel cable 71. The second steel cable 71 then tightens the first steel cable 61, enabling the first steel cable 61 to tighten the anchoring cylinder 51 and the supporting column 1.

[0049] The implementation principle in this application embodiment is as follows: By connecting the end of the receiving column 1 away from the drilling cone 11 to the output end of the spiral pile driver, and by using the spiral pile driver to drive the receiving column 1 into the foundation through the drilling cone 11 and the threaded protrusion 111 on the drilling cone 11 in a screwing manner, the threaded protrusion 111 can push the foundation to both sides, thereby reducing the resistance when the receiving column 1 enters the foundation.

[0050] After the support column 1 is screwed into the foundation, the operator uses the abutment channel 21 to place the abutment plate 2 on the end of the support column 1 located above the foundation. At the same time, the limiting channel 22 on the abutment plate 2 is matched with the limiting block on the support column 1, and the limiting channel 22 is abutted by the limiting strip 31, so that the abutment plate 2 abuts against the foundation, thereby enabling the abutment plate 2 to be positioned on the support column 1.

[0051] After the abutment plate 2 is positioned on the support column 1, the operator uses the locking handwheel 421 to thread the locking screw 42 onto the support block 41, and at the same time connects the locking screw 42 to the locking groove 32 on the limiting strip 31, so that the abutment plate 2 is fixed on the support column 1 by the locking screw 42. By fixing the abutment plate 2 and the support column 1, the support column 1 increases the contact area with the foundation through the abutment plate 2, thereby improving the support stability of the support column 1.

[0052] The operator makes an anchoring hole at each of the four corners of the abutment plate 2, then places the anchoring cylinder 51 in the anchoring hole, and knocks the anchoring cylinder 51 from the end away from the foundation so that one end of the anchoring cylinder 51 enters the foundation through the anchoring hole. The anchoring cylinder 51 and the abutment plate 2 are then welded together so that the anchoring cylinder 51 is fixed on the abutment plate 2.

[0053] The operator uses the anchoring handwheel 521 to screw the anchoring rod 52 into the anchoring cylinder 51, allowing the anchoring rod 52 to be inserted into the foundation. Then, concrete grout is injected into the anchoring rod 52 through the grouting groove 522. The concrete grout can enter the foundation around the anchoring rod 52 through the grouting channel 523, thereby increasing the contact area between the anchoring rod 52 and the foundation, thus improving the overall support stability.

[0054] After the anchoring rod 52 is inserted into the foundation, the operator welds the reinforcing ring 62 to one end of the anchoring cylinder 51 located on the foundation, and it is located on the side wall of the anchoring cylinder 51 facing the receiving column 1. Then, the operator hangs the first steel cable 61 on the reinforcing ring 62 through the fixing hook 63, and welds the other end of the first steel cable 61 away from the fixing hook 63 to the side wall of the receiving column 1 away from the foundation, thereby connecting the anchoring cylinder 51 and the receiving column 1.

[0055] The operator welds the end of the second steel cable 71 away from the tension rod 72 to the middle of the first steel cable 61. When the second steel cable 71 is subjected to tension and tightens the first steel cable 61, the first steel cable 61 can simultaneously provide tension to the anchor cylinder 51 and the support column 1, so that the anchor cylinder 51 can be connected to the support column 1 through the first steel cable 61.

[0056] The operator places a fixing block 82 on the side wall of the abutment plate 2 away from the foundation and below the tensioning screw 72, so that the positioning screw 81 on the fixing block 82 faces the tensioning screw 72, and then fixes the fixing block 82 to the abutment plate 2 with the positioning bolt 83.

[0057] The operator screws one end of the tensioning cylinder 73 onto the tensioning screw 72 and the other end onto the positioning screw 81. The thread direction of the positioning screw 81 is opposite to that of the tensioning screw 72. When the operator screws the tensioning cylinder 73 in a certain direction, the tensioning screw 72 and the positioning screw 81 can be brought closer to each other. The operator continues to screw the tensioning cylinder 73 until the second steel cable 71 tightens the first steel cable 61. At this time, the first steel cable 61 can simultaneously tighten the anchoring cylinder 51 and the supporting column 1, thereby improving the horizontal bearing capacity of the supporting column 1 through the anchoring cylinder 51.

[0058] This application also discloses an application process for a tapered thread enlarged support pile structure, including: Before construction, the location of the foundation pit is confirmed. Then, the operators dig a square pit on the foundation around the foundation pit. The inner circumference of the pit is the same as the outer circumference of the abutment plate 2. Then, the operators first open a positioning hole in the middle of the pit using a spiral drilling machine, and then use drilling equipment to drill a threaded hole at the end of the support column 1 away from the drilling cone 11.

[0059] After the positioning hole is opened, the operator removes the drill bit from the output end of the auger drill. Then, the end of the receiving column 1 away from the drilling cone 11 is fixed to the output end of the auger drill with bolts. The auger drill is then used to erect the receiving column 1 and make the drilling cone 11 abut against the positioning hole. The auger drill is then started to screw the receiving column 1 into the foundation.

[0060] After the support column 1 enters the foundation, the operator uses the abutment channel 21 on the abutment plate 2 to place the abutment plate 2 on the end of the support column 1 away from the foundation. Then, the position of the abutment plate 2 is adjusted so that the limiting channel 22 on the abutment plate 2 matches the limiting strip 31 on the support column 1, and the limiting channel 22 is locked on the limiting strip 31, thereby positioning the abutment plate 2 on the support column 1.

[0061] The operator uses a drilling machine to drill a through hole on the side of the support block 41 away from the limiting strip 31, and at the same time, the drill bit drills a locking groove 32 on the limiting strip 31. The locking handwheel 421 is used to screw the locking screw 42 into the support block 41 and the locking groove 32, so that the support block 41 and the locking groove 32 are fixed together by the locking screw 42, thereby fixing the abutment plate 2 on the support column 1.

[0062] The operator penetrates the abutment plate 2 at each of the four corners and makes an anchoring hole. The anchoring cylinder 51 is placed inside the side wall of the anchoring hole. Then, the end of the anchoring cylinder 51 away from the foundation is struck so that one end of the anchoring cylinder 51 enters the foundation. The operator then welds the part of the anchoring cylinder 51 that contacts the abutment plate 2 so that the anchoring cylinder 51 is connected to the abutment plate 2.

[0063] After the anchoring cylinder 51 is fixed on the abutment plate 2, the operator first screws the anchoring screw 52 into the anchoring cylinder 51 through the anchoring handwheel 521, so that the anchoring screw 52 can be inserted into the foundation. Then, the concrete grout is injected into the anchoring screw 52 through the grouting groove 522, so that the concrete grout enters the foundation around the anchoring screw 52 through the grouting channel 523.

[0064] Meanwhile, the operator welds the reinforcing ring 62 to the outer wall of the anchoring cylinder 51, close to the side of the supporting column 1. Then, one end of the first steel cable 61 is hung on the reinforcing ring 62 through the fixing hook 63, and the other end of the first steel cable 61 is welded to the end of the supporting column 1 away from the foundation.

[0065] The operator welds the end of the second steel cable 71 away from the tensioning rod 72 to the middle position of the first steel cable 61, and screws one end of the tensioning cylinder 73 onto the tensioning rod 72.

[0066] The operator places the fixing block 82 with the positioning screw 81 on the abutment plate 2, so that the positioning screw 81 faces the tensioning screw 72. Then, the fixing block 82 is fixed on the abutment plate 2 by the positioning bolt, and the other end of the tensioning screw cylinder 73 is screwed onto the positioning screw 81. The tensioning screw cylinder 73 is continuously screwed until the second steel cable 71 tensions the first steel cable 61.

[0067] After the tensioning screw 73 is tightened, the construction team can excavate the foundation pit within the area enclosed by all the supporting columns 1 to carry out construction.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tapered thread enlarged support pile structure, characterized in that: The system includes a support column (1) and a drilling cone (11). The outer wall of the drilling cone (11) is provided with threaded protrusions (111). At the end of the support column (1) away from the drilling cone (11), there is an abutment plate (2) for pressing against the foundation. The abutment plate (2) has an abutment channel (21) for fitting the abutment plate (2) onto the support column (1). The abutment plate (2) has multiple insertion mechanisms (5) for positioning the abutment plate (2) on the foundation. Each insertion mechanism (5) includes an anchor cylinder (51) and an anchor rod (52). The anchor cylinder (51) passes through the abutment plate (2) and abuts into the foundation. The anchor rod (52)... The anchor rod (52) is threaded inside the anchoring cylinder (51), and one end of the anchor rod (52) passing through the anchoring cylinder (51) can be inserted into the foundation. An anchoring handwheel (521) is provided on the end of the anchor rod (52) away from the foundation. A grouting groove (522) is provided on the anchor rod (52) and along the axial direction of the anchor rod (52). The end of the grouting groove (522) away from the anchoring handwheel (521) is closed. Several grouting channels (523) are provided through the side wall of the anchor rod (52) at the grouting groove (522). The grouting groove (522) is used to receive concrete slurry, and the grouting channels (523) are used to allow the concrete slurry in the anchoring groove to enter the circumference of the anchor rod (52). The surrounding soil layer; a reinforcement mechanism (6) is also provided between each anchor cylinder (51) and the supporting column (1), each reinforcement mechanism (6) includes a first steel cable (61), a reinforcement ring (62) and a fixing hook (63), the reinforcement ring (62) is provided on the side wall of the anchor cylinder (51) and is located at the position of the anchor cylinder (51) facing the supporting column (1), the fixing hook (63) is provided at one end of the length direction of the first steel cable (61), one end of the first steel cable (61) is connected to the reinforcement ring (62) through the fixing hook (63), and the other end of the first steel cable (61) is provided on the side wall of the supporting column (1); a tensioning mechanism (7) is provided on the first steel cable (61), the abutment A positioning part (8) is provided on the side wall of the connecting plate (2) away from the foundation, and the positioning part (8) is located below the tensioning mechanism (7). The tensioning mechanism (7) includes a second steel cable (71), a tensioning screw (72) and a tensioning cylinder (73). One end of the second steel cable (71) is provided on the first steel cable (61). The tensioning screw (72) is provided at the end of the second steel cable (71) away from the first steel cable (61). One end of the tensioning cylinder (73) is threaded to the tensioning screw (72). The end of the tensioning cylinder (73) away from the tensioning screw (72) can be threaded to the positioning part (8). The tensioning cylinder (73) is used to tension or loosen the second steel cable (71).

2. The tapered thread enlarged support pile structure according to claim 1, characterized in that: The tapered thread enlarged support pile structure also includes a positioning mechanism (3), which includes multiple limiting strips (31). The limiting strips (31) are set on the side wall of the receiving column (1) and located above the foundation. The abutment plate (2) is provided with a limiting channel (22) for matching the limiting strips (31), and the limiting channel (22) is located on the abutment channel (21). The abutment plate (2) is also provided with a locking component (4), which is set on the side wall of the abutment plate (2) away from the foundation. The locking component (4) can be connected to the limiting strips (31) so that the abutment plate (2) is positioned on the foundation.

3. The tapered thread enlarged support pile structure according to claim 2, characterized in that: The positioning assembly (4) includes a support block (41), a positioning screw (42), and a positioning handwheel (421). The support block (41) is located on the side wall of the abutment plate (2) away from the foundation. The positioning screw (42) is threaded onto the support block (41). The limiting strip (31) has a positioning groove (32) on its side wall facing the positioning assembly (4). The positioning screw (42) passes through the support block (41) and is connected to the limiting strip (31) through the positioning groove (32). The positioning handwheel (421) is located at the end of the positioning screw (42) away from the support block (41).

4. The tapered thread enlarged support pile structure according to claim 1, characterized in that: The positioning part (8) includes a positioning screw (81), a fixing block (82) and a positioning bolt (83). The fixing block (82) is disposed on the abutment plate (2) and is located on the side wall of the abutment plate (2) away from the foundation. The positioning bolt (83) passes through the fixing block (82) and is connected to the abutment plate (2) so that the fixing block (82) is pressed against the abutment plate (2). The positioning screw (81) is disposed on the side wall of the fixing block (82) away from the foundation. The end of the tensioning cylinder (73) away from the tensioning screw (72) is connected to the positioning screw (81).

5. The application process of the tapered thread enlarged support pile structure according to any one of claims 1-4, characterized in that: The application steps include the following: Insertion: Insert the receiving post (1) into the foundation through the drilling cone (11) and the threaded protrusion (111) provided on the drilling cone (11); Positioning: The end of the abutment plate (2) is sleeved on the abutment column (1) away from the drilling cone (11) and on the foundation through the abutment channel (21); Reinforcement: The insertion mechanism (5) passes through the abutment plate (2) and is inserted into the foundation, so that the abutment plate (2) is pressed against the foundation. Through the abutment plate (2) and the foundation, the support stability of the support column (1) is improved.

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