A special-shaped pile-anchor support structure for foundation pit support

Abstract

The present invention discloses a special-shaped pile-anchor support structure for foundation pit support, including a pile body. A plurality of waist beams are arranged on the side wall of the pile body. Two symmetrically arranged rectangular grooves are respectively formed through the side walls at both ends of each waist beam. A reinforcing rod is slidably connected inside the two rectangular grooves. A pull rod is fixedly penetrated through the end of the reinforcing rod. The side wall of the pull rod is connected with an installation block through two symmetrically arranged flipping limit devices. An installation cavity is formed in the side wall of the installation block. An anchor body is fixed on the side wall of the installation block. External threads are arranged on the circumferential side wall of the reinforcing rod. The advantages are as follows: After the flipping plate flips, the pull rod can be taken out along the inside of the installation cavity, so that the pull rod can be conveniently recycled. Combined with the connection of the waist beam by the limit connection device, the support structure can be quickly recycled, which is convenient for subsequent reuse, can reduce resource waste, and is convenient for foundation pit support use.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a special-shaped pile-anchor support structure for foundation pit support. Background Technique

[0002] Pile-anchor support is a foundation pit support system in which one end of a tension member is fixed in a stable stratum of an excavated foundation pit, and the other end is connected to a retaining pile. It is a retaining structure developed on the basis of relatively mature theoretical research on rock bolts. Its characteristics of safety and economy make it widely used in slope and deep foundation pit support projects. During the construction inside the foundation pit, the excavation of soil and the pile-anchor support system do not interfere with each other, which can effectively shorten the construction period. It is especially suitable for complex construction sites and foundation pit projects with strict requirements for the construction period.

[0003] The existing pile-anchor support process is relatively complex, with high support costs, and it is impossible to disassemble and remove the tie rods after the support is completed. It will occupy the development position and cause waste of resources, which is not convenient for the use of foundation pit support. For this reason, we have proposed a special-shaped pile-anchor support structure for foundation pit support that is convenient for recycling. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the support structure cannot be reused in the prior art, and to propose a special-shaped pile-anchor support structure for foundation pit support.

[0005] To achieve the above object, the present invention adopts the following technical solution: A special-shaped pile-anchor support structure for foundation pit support, including a pile body, a plurality of waist beams are arranged on the side wall of the pile body, two symmetrically arranged rectangular slots are respectively opened through the side walls at both ends of each waist beam, a reinforcing rod is slidably connected inside the two rectangular slots, a tie rod is fixedly penetrated through the end of the reinforcing rod, the side wall of the tie rod is connected with a mounting block through two symmetrically arranged flipping limiting devices, a mounting cavity is opened on the side wall of the mounting block, an anchor body is fixed on the side wall of the mounting block, an external thread is arranged on the circumferential side wall of the reinforcing rod, a limiting bolt is rotatably connected to the circumferential side wall of the external thread, the limiting bolt abuts against the side wall of the waist beam, and any two corresponding waist beams are connected through a limiting connection device.

[0006] In the above-mentioned special-shaped pile-anchor support structure for foundation pit support, the limiting connection device includes a rotating rod rotatably connected to the upper end of the waist beam through a bearing, a rotating block is fixed on the circumferential side wall of the rotating rod, a sliding cavity is opened on the side wall of the rotating block, a moving plate is slidably connected to the inner wall of the sliding cavity, and a connecting block is fixed on the side wall of the moving plate.

[0007] In the above - mentioned special - shaped pile - anchor support structure for foundation pit support, the end of the connecting block penetrates through the inner wall of the sliding cavity and extends to the outside of the rotating block. An installation groove is formed through the upper end of the connecting block. The inner wall of the sliding cavity is rotatably connected with a plurality of adjusting rods through bearings, and all the adjusting rods are rotatably connected through the moving plate.

[0008] In the above - mentioned special - shaped pile - anchor support structure for foundation pit support, a limiting column is fixed at the upper end of the waist beam. The limiting column and the rotating rod are symmetrically arranged, and the limiting column corresponds to the installation groove.

[0009] In the above - mentioned special - shaped pile - anchor support structure for foundation pit support, the flipping limiting device includes a storage groove formed at the end of the pull rod. The inner wall of the storage groove is rotatably connected with a pin shaft through a torsion spring. A flipping plate is fixed on the circumferential side wall of the pin shaft. Two symmetrically arranged horizontal grooves are formed on one inner wall of the storage groove. A rack is slidably connected to the inner bottom of each horizontal groove. A plurality of connecting gears are fixed on the circumferential side wall of the pin shaft.

[0010] In the above - mentioned special - shaped pile - anchor support structure for foundation pit support, a plurality of the connecting gears are correspondingly meshed with a plurality of the racks. The racks abut against the inner wall of the storage groove. The flipping plate is located between two connecting gears. A fixed limiting plate is fixed on the inner wall of the storage groove, and the fixed limiting plate corresponds to the flipping plate.

[0011] In the above - mentioned special - shaped pile - anchor support structure for foundation pit support, a trigger cavity is formed on the side wall of the pull rod. A sliding plate is slidably connected to the inner wall of the trigger cavity. One end side wall of the sliding plate is connected with one inner wall of the trigger cavity through a return spring. An attracting block is fixed on the other inner wall of the trigger cavity, and the attracting block corresponds to the other end side wall of the sliding plate.

[0012] In the above - mentioned special - shaped pile - anchor support structure for foundation pit support, connecting grooves are formed on the upper and lower inner walls of the trigger cavity. The two connecting grooves are respectively and correspondingly communicated with the two storage grooves. Horizontal fixing plates are slidably connected to the inner walls of the two connecting grooves. One ends of the two horizontal fixing plates are respectively fixed to the upper and lower ends of the sliding plate, and the other ends of the two horizontal fixing plates are respectively fixed to the bottoms of the racks. The sliding plate is made of iron - based metal material, and the attracting block is an electromagnet.

[0013] Compared with the existing technology, the advantages of the present invention are as follows:

[0014] 1. In the present invention, under the adsorption of the suction block on the sliding plate, the sliding plate can drive the rack to move and the turning plate can be turned and recovered, so that the pull rod can be conveniently extended into the installation cavity. After the suction block is powered off, the turning plate can be quickly reset. Combined with the limitation of the waist beam by the limit bolts on the circumferential side wall of the strengthening rod, the installation of the support structure can be quickly realized, and the rapid support use of the pile anchor can be facilitated.

[0015] 2. In the present invention, by using the rotatable turning block on the rotating rod and the movable plate and connecting plate that can stably move inside the sliding cavity, the connection position and distance between two adjacent waist beams can be adjusted, so as to facilitate the connection of two adjacent waist beams that are in contact with the end of the special-shaped pile anchor. Furthermore, the mutual connection of the special-shaped pile anchor support structure can be facilitated, and the mutual stable connection of the support structure can be facilitated.

[0016] 3. In the present invention, after the turning plate is turned, the pull rod can be taken out along the inside of the installation cavity, so as to facilitate the recovery of the pull rod. Combined with the mutual connection of the waist beams, the support structure can be quickly recovered, which is convenient for subsequent reuse, can reduce resource waste, and is convenient for foundation pit support. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of a special-shaped pile anchor support structure for foundation pit support proposed by the present invention;

[0018] Figure 2 is a top view of the waist beam part of a special-shaped pile anchor support structure for foundation pit support proposed by the present invention;

[0019] Figure 3 is a top cross-sectional view of the turning block part of a special-shaped pile anchor support structure for foundation pit support proposed by the present invention;

[0020] Figure 4 is a main cross-sectional view of the turning limit device part of a special-shaped pile anchor support structure for foundation pit support proposed by the present invention;

[0021] Figure 5 is Figure 4 an enlarged view of part A in

[0022] Figure 6 is a top view of the pull rod part of a special-shaped pile anchor support structure for foundation pit support proposed by the present invention.

[0023] In the figure: 1 pile body, 2 waist beam, 3 rectangular groove, 4 strengthening rod, 5 tension rod, 6 mounting block, 7 anchor body, 8 external thread, 9 limit bolt, 10 rotating rod, 11 rotating block, 12 sliding cavity, 13 moving plate, 14 adjusting rod, 15 connecting block, 16 mounting groove, 17 limit post, 18 mounting cavity, 19 storage groove, 20 pin shaft, 21 flipping plate, 22 horizontal groove, 23 rack, 24 connecting gear, 25 fixed limit plate, 26 trigger cavity, 27 connecting groove, 28 sliding plate, 29 horizontal fixing plate, 30 return spring, 31 suction block. Specific implementation manner

[0024] The following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

[0025] Refer to Figures 1-6 , a special-shaped pile anchor support structure for foundation pit support, including a pile body 1. A plurality of waist beams 2 are arranged on the side wall of the pile body 1. Two symmetrically arranged rectangular grooves 3 are respectively penetrated and opened on the side walls at both ends of each waist beam 2. A strengthening rod 4 is slidably connected in common inside the two rectangular grooves 3. A tension rod 5 is fixedly penetrated at the end of the strengthening rod 4. By sleeving the strengthening rod 4 outside the tension rod 5, the strength of the tension rod 5 can be increased, so as to enhance the stability of the connection of the support structure. The side wall of the tension rod 5 is connected with a mounting block 6 through two symmetrically arranged flipping limit devices. An installation cavity 18 is opened on the side wall of the mounting block 6. An anchor body 7 is fixed on the side wall of the mounting block 6. The function of the anchor body 7 is to fix the connected lining body in a certain position, and the anchor fastener resists the action of static load, thermal stress, mechanical rotation or vibration, which is the prior art and will not be elaborated here. The circumferential side wall of the strengthening rod 4 is provided with an external thread 8. The circumferential side wall of the external thread 8 is rotatably connected with a limit bolt 9. The limit bolt 9 abuts against the side wall of the waist beam 2. Any two corresponding waist beams 2 are connected through a limit connection device.

[0026] The limit connection device includes a rotating rod 10 rotatably connected to the upper end of the waist beam 2 through a bearing. A rotating block 11 is fixed on the circumferential side wall of the rotating rod 10. A sliding cavity 12 is formed in the side wall of the rotating block 11. A moving plate 13 is slidably connected to the inner wall of the sliding cavity 12. A connecting block 15 is fixed on the side wall of the moving plate 13; the end of the connecting block 15 penetrates through the inner wall of the sliding cavity 12 and extends to the outside of the rotating block 11. An installation groove 16 is formed through the upper end of the connecting block 15. A plurality of adjusting rods 14 are rotatably connected to the inner wall of the sliding cavity 12 through bearings. The plurality of adjusting rods 14 are all rotatably connected through the moving plate 13; a limit post 17 is fixed on the upper end of the waist beam 2. The limit post 17 is a screw rod. After the connecting block 15 is sleeved on the upper end of the limit post 17, a bolt can be used for limiting, which is convenient for the connection and use of the waist beams 2. The limit post 17 and the rotating rod 10 are symmetrically arranged. The limit post 17 corresponds to the installation groove 16. Through the rotatable rotating block 11 and the moving plate 13 that can slide along the inside of the sliding cavity 12, it is possible to facilitate the adjustment of the installation position and distance of the two waist beams 2, so as to facilitate the mutual installation and use of the waist beams 2 on the special-shaped pile anchors and facilitate the use of the support structure.

[0027] The flipping limit device includes a storage groove 19 formed at the end of the pull rod 5. The inner wall of the storage groove 19 is rotationally connected with a pin shaft 20 through a torsion spring. A flipping plate 21 is fixed on the circumferential side wall of the pin shaft 20. Initially, the flipping plate 21 is in an unfolded state. When the flipping plate 21 rotates into the storage groove 19, the torsion spring is in a twisted state. Two symmetrically arranged horizontal grooves 22 are formed in one side inner wall of the storage groove 19. A rack 23 is slidably connected to the inner bottom of each horizontal groove 22. A plurality of connecting gears 24 are fixed on the circumferential side wall of the pin shaft 20; the plurality of connecting gears 24 are correspondingly engaged with the plurality of racks 23. The rack 23 abuts against the inner wall of the storage groove 19. The flipping plate 21 is located between two connecting gears 24. A fixed limit plate 25 is fixed on the inner wall of the storage groove 19, and the fixed limit plate 25 corresponds to the flipping plate 21; a trigger cavity 26 is formed in the side wall of the pull rod 5. A sliding plate 28 is slidably connected to the inner wall of the trigger cavity 26. One end side wall of the sliding plate 28 is connected with one side inner wall of the trigger cavity 26 through a return spring 30. An attracting block 31 is fixed on the other side inner wall of the trigger cavity 26, and the attracting block 31 corresponds to the other end side wall of the sliding plate 28; connecting grooves 27 are formed in the upper and lower inner walls of the trigger cavity 26. The two connecting grooves 27 are respectively and correspondingly communicated with the two storage grooves 19. A horizontal fixing plate 29 is slidably connected to the inner wall of each of the two connecting grooves 27. One ends of the two horizontal fixing plates 29 are respectively fixed to the upper and lower ends of the sliding plate 28, and the other ends of the two horizontal fixing plates 29 are respectively fixed to the bottom of the rack 23. The sliding plate 28 is made of a ferrous metal material, and the attracting block 31 is an electromagnet. By using the adsorption of the attracting block 31 on the sliding plate 28, the sliding plate 28 can drive the rack 23 to move and realize the flipping and recycling of the flipping plate 21, so as to facilitate the insertion of the pull rod 5 into the installation cavity 18. Combined with the limit bolt 9 connected to the external thread 8 of the outer part of the reinforcing rod 4, the stable connection between the pile body 1 and the anchor body 7 can be quickly realized. Moreover, after the use of the support structure, the reinforcing rod 4 and the pull rod 5 can be quickly taken out, so as to facilitate the reuse of the pull rod 5, reduce the waste of resources, and facilitate the support use of the foundation pit.

[0028] In the present invention, during the use of the pile-anchor support structure, first, the installation block 6 is fixed to the inside of the foundation pit by using the anchor body 7, and then the reinforcing rod 4 and the pull rod 5 are inserted to the position of the anchor body 7, so that the pull rod 5 is close to the installation cavity 18 of the installation block 6. At this time, the attracting block 31, which is an electromagnet, is controlled to be energized, so that the attracting block 31 obtains magnetism, thereby adsorbing the sliding plate 28 made of a ferrous metal material to move along the inner wall of the trigger cavity 26, and at the same time, the stretching of the return spring 30 can be realized. During the movement of the sliding plate 28, the horizontal fixing plate 29 can be driven to slide along the inner wall of the connecting groove 27, and at the same time, the simultaneous movement of a plurality of racks 23 on the horizontal fixing plate 29 can be driven. Furthermore, under the action of the mutually engaged connecting gears 24 and racks 23, the rotation of the pin shaft 20 can be realized, so as to realize the movement of the flipping plate 21 towards the storage groove 19, and at the same time, the torsion of the torsion spring on the pin shaft 20 can be realized;

[0029] When the sliding plate 28 is stably adsorbed in contact with the end of the suction block 31, the turning plate 21 can be completely turned into the storage groove 19, so that it is convenient for the pull rod 5 to extend into the installation cavity 18. When the end of the pull rod 5 extends into the installation cavity 18 and the end of the pull rod 5 abuts against the inner wall of the installation cavity 18, the energized circuit of the suction block 31 is turned off, so that the magnetism of the suction block 31 disappears. Thus, the reset spring 30 in the stretched state can reset the sliding plate 28. At the same time, combined with the torsion spring in the torsion state, the pin shaft 20 and the turning plate 21 can be automatically reset and unfolded. Furthermore, the turning plate 21 in the unfolded state can be located inside the installation cavity 18. At this time, the pull rod 5 and the reinforcing rod 4 are pulled outwards until the turning plate 21 abuts against the inner wall of the installation cavity 18. At this time, the limiting bolt 9 rotating on the external thread 8 of the reinforcing rod 4 is continuously rotated until the limiting bolt 9 abuts against the end of the waist beam 2. At this time, by using the limiting bolt 9 and the turning plate 21 located inside the installation cavity 18 and in the unfolded state, the stable connection of the reinforcing rod 4 and the installation block 6 can be realized, so that the stable connection of the anchor body 7 and the pile body 1 can be realized. Moreover, by using the deflectable turning plate 21, the rapid installation of the pile-anchor support structure can be realized, and the installation efficiency of the support structure can be effectively increased;

[0030] When supporting the special-shaped pile body 1, the installation positions of multiple waist beams 2 will be uneven. At this time, by rotating the rotating rod 10 above a certain waist beam 2, the rotating block 11 on the rotating rod 10 rotates along with the rotating rod 10, so that it is convenient to rotate the connecting block 15 to the position of the limiting column 17 above another waist beam 2. At the same time, by rotating the adjusting rod 14 which is a threaded rod, the sliding of the moving plate 13 along the inner wall of the sliding cavity 12 can be realized, so that the extension of the connecting block 15 can be realized. Furthermore, the connection distance between the rotating rod 10 above the waist beam 2 and the limiting column 17 above another waist beam 2 can be extended. Combined with the rotatable rotating block 11, it is convenient to connect the corresponding waist beams 2 on the special-shaped pile anchor, so that the connection stability of multiple waist beams 2 is better, and it is convenient to use the pile anchor for support;

[0031] When it is necessary to recycle the support structure, by loosening the limiting bolt 9, the loosening of the reinforcing rod 4 and the waist beam 2 can be realized. At this time, it is convenient to separate the waist beam 2 from the end face of the pile body 1. Then, by energizing the suction block 31 which is an electromagnet, the reset of the sliding plate 28 and the recycling of the turning plate 21 are realized again. Furthermore, it is convenient for the reinforcing rod 4 and the pull rod 5 to extend along the installation block 6, which is convenient for quickly recycling the pull rod 5 and convenient for subsequent reuse, and can reduce resource waste.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special-shaped pile-anchor support structure for foundation pit support, including a pile body (1), characterized in that, A plurality of waist beams (2) are provided on the side wall of the pile body (1). The plurality of waist beams (2) are distributed in multiple groups. Two symmetrically arranged rectangular grooves (3) are penetrated and opened on the side walls at both ends of each waist beam (2). A reinforcing rod (4) is slidably connected inside the two rectangular grooves (3) together. A pull rod (5) is fixedly penetrated at the end of the reinforcing rod (4). The side wall of the pull rod (5) is connected with a mounting block (6) through two symmetrically arranged turning limit devices. An installation cavity (18) is opened on the side wall of the mounting block (6). An anchor body (7) is fixed on the side wall of the mounting block (6). An external thread (8) is arranged on the circumferential side wall of the reinforcing rod (4). A limit bolt (9) is rotatably connected to the circumferential side wall of the external thread (8). The limit bolt (9) abuts against the side wall of the waist beam (2). Any two corresponding waist beams (2) are connected through a limit connection device; The turning limit device includes a storage groove (19) opened at the end of the pull rod (5). A pin shaft (20) is rotatably connected to the inner wall of the storage groove (19) through a torsion spring. A turning plate (21) is fixed on the circumferential side wall of the pin shaft (20). Two symmetrically arranged horizontal grooves (22) are opened on one side inner wall of the storage groove (19). A rack (23) is slidably connected to the inner bottom of each horizontal groove (22). A plurality of connecting gears (24) are fixed on the circumferential side wall of the pin shaft (20); A trigger cavity (26) is opened on the side wall of the pull rod (5). A sliding plate (28) is slidably connected to the inner wall of the trigger cavity (26). One end side wall of the sliding plate (28) is connected with one side inner wall of the trigger cavity (26) through a return spring (30). A suction block (31) is fixed on the other side inner wall of the trigger cavity (26). The suction block (31) corresponds to the other end side wall of the sliding plate (28).

2. The special-shaped pile-anchor support structure for foundation pit support according to claim 1, wherein, The limit connection device includes a rotating rod (10) rotatably connected to the upper end of the waist beam (2) through a bearing. A rotating block (11) is fixed on the circumferential side wall of the rotating rod (10). A sliding cavity (12) is opened on the side wall of the rotating block (11). A moving plate (13) is slidably connected to the inner wall of the sliding cavity (12). A connecting block (15) is fixed on the side wall of the moving plate (13).

3. The special-shaped pile-anchor support structure for foundation pit support according to claim 2, wherein, The end of the connecting block (15) penetrates through the inner wall of the sliding cavity (12) and extends to the outside of the rotating block (11). An installation groove (16) is penetrated and opened at the upper end of the connecting block (15). A plurality of adjusting rods (14) are rotatably connected to the inner wall of the sliding cavity (12) through bearings. The plurality of adjusting rods (14) are all rotatably connected through the moving plate (13).

4. The special-shaped pile-anchor support structure for foundation pit support according to claim 3, characterized in that, A limit column (17) is fixed at the upper end of the waist beam (2). The limit column (17) and the rotating rod (10) are symmetrically arranged. The limit column (17) corresponds to the installation groove (16).

5. The special-shaped pile-anchor support structure for foundation pit support according to claim 4, characterized in that, A plurality of the connecting gears (24) are correspondingly engaged with a plurality of racks (23). The racks (23) are abutted against the inner wall of the storage groove (19). The turnover plate (21) is located between two connecting gears (24). A fixed limiting plate (25) is fixed on the inner wall of the storage groove (19), and the fixed limiting plate (25) corresponds to the turnover plate (21).

6. The special-shaped pile-anchor support structure for foundation pit support according to claim 5, wherein, Connecting grooves (27) are formed in the inner walls of the upper and lower ends of the trigger cavity (26). The two connecting grooves (27) are respectively and correspondingly communicated with the two storage grooves (19). Horizontal fixing plates (29) are slidably connected to the inner walls of the two connecting grooves (27). One ends of the two horizontal fixing plates (29) are respectively fixed to the upper and lower ends of the sliding plate (28). The other ends of the two horizontal fixing plates (29) are respectively fixed to the bottoms of the racks (23). The sliding plate (28) is made of iron metal material, and the suction block (31) is an electromagnet.

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