Foundation anchor rod static pressure pile reinforcing counter-force device in narrow space

Abstract

The utility model provides a foundation anchor rod static pressure pile reinforcing counter-force device in a narrow space, which comprises a counter-force base, a pressure-bearing top beam, two vertical screw rods and a pile pressing jack, and the counter-force base is provided with a pile column penetrating hole, an anchor rod penetrating hole and a screw rod connecting hole; an anchor rod penetrates through the anchor rod through hole so as to be fixedly connected with a foundation; the center of the pressure-bearing top beam is located over the pile penetrating hole, the bottom ends of the two vertical screws are connected with the screw connecting holes, the upper portions of the two vertical screws penetrate through the two ends of the pressure-bearing top beam, and lifting clamping mechanisms are further installed on the positions, corresponding to the top face and the bottom face of the pressure-bearing top beam, of each vertical screw. The height of the pressure-bearing top beam can be conveniently adjusted and fixed; the top of the pile pressing jack is connected to the center of the bottom of the pressure-bearing top beam. The foundation anchor rod static pressure pile reinforcing counter-force device in the narrow space has the advantages of being scientific in design, small in needed construction space, convenient to install and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a foundation anchor static pressure pile reinforcement reaction force device in a narrow space. Background Art

[0002] Static pile driving is a pile driving process in which precast piles are driven into the soil using the pile driving mechanism of a static pile driver, which uses the deadweight of the pile driver and the counterweight on the frame to provide reaction force. The working principle is completely opposite to that of hammering. However, the construction space in the reinforcement area of ​​existing building foundations is limited, and the existing static pile drivers are relatively large and cannot enter them for construction.

[0003] The patent with application number 202320663173.6 discloses a new anchor static pressure pile construction structure, which uses a first anchor to fix a pile foot on each side of the pile hole, and then connects the top main beam and secondary beam through the second anchor on the pile foot. The height of the main beam can be adjusted and locked by two bolts clamped at the bottom of the main beam and the top of the secondary beam. A jack is set at the bottom of the main beam to press the pile column. Although this structure can be applied to static pressure pile construction in a limited space, each part is assembled through fixed hole positions, and workers on site need to accurately locate and assemble in sequence according to the steps, which is more troublesome.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The utility model aims to address the deficiencies of the prior art and thus provide a foundation anchor static pressure pile reinforcement reaction force device in a narrow space which has scientific design, small required construction space, convenient installation and strong practicality.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a foundation anchor static pressure pile reinforcement reaction force device in a narrow space, comprising a reaction force base, a pressure-bearing top beam, two vertical screws and a pile-pressing jack, wherein the reaction force base is provided with a pile column through hole at the center, anchor rod through holes at four corners, and four screw connection holes around the pile column through hole, each of which is located at the center of two adjacent anchor rod through holes; the anchor rod through holes are used to pass the anchor rods so as to be fixedly connected with the foundation; the center of the pressure-bearing top beam is located directly above the pile column through hole, the bottom ends of the two vertical screws are connected to the screw connection holes, the upper parts of the two vertical screws pass through the two ends of the pressure-bearing top beam, and each of the vertical screws is also provided with a lifting clamping mechanism corresponding to the top and bottom surfaces of the pressure-bearing top beam so as to adjust and fix the height of the pressure-bearing top beam; the top of the pile-pressing jack is connected to the bottom center of the pressure-bearing top beam.

[0007] Based on the above, side slots are provided at both ends of the pressure-bearing top beam so that the vertical screw rod can enter and exit the end of the pressure-bearing top beam from the side.

[0008] Based on the above, the clamping mechanism includes a positioning nut and a pressure-bearing nut, the positioning nut supports the bottom surface of the pressure-bearing top beam, and the pressure-bearing nut presses the top surface of the pressure-bearing top beam.

[0009] Based on the above, the reaction base includes a top plate, an intermediate frame and a bottom plate connected in sequence from top to bottom, the four screw connection holes are all opened on the top plate, and the bottom end of the vertical screw passes through the screw connection hole and is locked by a locking nut.

[0010] Based on the above, an operating hole is respectively opened on the side surface of the intermediate frame corresponding to each of the screw connecting holes.

[0011] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model opens the pile column through hole in the center of the reaction base, which is convenient for alignment with the pile hole or pile column on site. The anchor rod through holes at the four corners facilitate fixing the reaction base on the foundation. The four screw connecting holes facilitate adjustment of the installation direction of the pressure-bearing top beam, and the spatial adaptability is stronger. The clamping mechanism facilitates adjustment of the height of the pressure-bearing top beam. Finally, the pile driving jack is used to apply reaction force to the pile column. The utility model has the advantages of scientific design, small required construction space, convenient installation and strong practicality.

[0012] Furthermore, the side slot is provided to facilitate the vertical screw to enter and exit the end of the pressure-bearing top beam from the side, and after loosening the clamping mechanism and the locking nut, the vertical screw can be easily disassembled and assembled; the operating hole provided on the side of the intermediate frame facilitates the operation of connecting the locking nut with the bottom end of the vertical screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side structural schematic diagram of a foundation anchor static pressure pile reinforcement reaction force device in a narrow space in the utility model.

[0014] Figure 2 It is a front structural schematic diagram of a foundation anchor static pressure pile reinforcement reaction force device in a narrow space in the utility model.

[0015] Figure 3 It is a schematic diagram of the front use state of the foundation anchor static pressure pile reinforcement reaction force device in a narrow space in the utility model.

[0016] Figure 4 It is a top view of the reaction base in the utility model.

[0017] Figure 5 yes Figure 4Cross-sectional view along the 1-1 direction.

[0018] Figure 6 yes Figure 4 Cross-sectional view along the 2-2 direction.

[0019] In the figure: 1. reaction base; 2. pressure-bearing top beam; 3. vertical screw rod; 4. pile driving jack; 5. foundation; 6. pile hole; 7. anchor rod hole; 8. screw connecting hole; 9. anchor rod; 10. pile hole; 11. pile; 12. positioning nut; 13. pressure-bearing nut; 14. locking nut; 15. side slot; 16. top plate; 17. intermediate frame; 18. bottom plate; 19. operation hole. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0021] like Figure 1-6 As shown, a foundation anchor static pressure pile reinforcement reaction device in a narrow space includes a reaction base 1, a pressure-bearing top beam 2, two vertical screws 3 and a pile pressure jack 4, the reaction base 1 is provided with a pile column through hole 6 in the center, anchor rod through holes 7 at four corners, and four screw connection holes 8 are provided around the pile column through hole 6, each of the screw connection holes 8 is located at the center of two adjacent anchor rod through holes 7; the pile column through hole 6 is convenient for alignment with the pile hole 10 or pile column 11 on site; the anchor rod through hole 7 is used to insert the anchor rod 9 so as to be fixedly connected to the foundation 5.

[0022] The center of the pressure-bearing top beam 2 is located directly above the pile column through-hole 6, the bottom ends of the two vertical screws 3 are connected to the screw connecting holes 8, and the upper parts of the two vertical screws 3 pass through the two ends of the pressure-bearing top beam 2. A liftable clamping mechanism is also installed on each vertical screw 3 corresponding to the top and bottom surfaces of the pressure-bearing top beam 2, and the clamping mechanism specifically includes a positioning nut 12 and a pressure-bearing nut 13. The positioning nut 12 supports the bottom surface of the pressure-bearing top beam 2, and the pressure-bearing nut 13 presses the top surface of the pressure-bearing top beam 2 so as to adjust and fix the height of the pressure-bearing top beam 2; the top of the pile driving jack 4 is connected to the bottom center of the pressure-bearing top beam 2, and the bottom applies pressure to the pile column 11.

[0023] In order to facilitate disassembly and assembly, side grooves 15 are provided at both ends of the pressure-bearing top beam 2 so that the vertical screw 3 can enter and exit the end of the pressure-bearing top beam 2 from the side. During disassembly and assembly, there is no need to completely remove the clamping mechanism. The vertical screw 3 can be disassembled and assembled by simply loosening the clamping mechanism; the reaction base 1 includes a top plate 16, an intermediate frame 17 and a bottom plate 18 connected in sequence from top to bottom, and the four screw connecting holes 8 are all provided on the top plate 16. The bottom end of the vertical screw 3 passes through the screw connecting hole 8 and is locked by a locking nut 14. An operating hole 19 is provided on the side of the intermediate frame 17 corresponding to each of the screw connecting holes 8, so that a wrench can be inserted from this position to operate the locking nut 14.

[0024] When used specifically, the following steps are included: (e.g. foundation 5 soil)

[0025] Step 1: excavate the part to be reinforced, expose the original foundation 5, align the pile hole 6 on the reaction base 1 with the position to be constructed of the pile 11, drill the reinforcement hole on the original foundation 5, implant the anchor rod 9, and fix the reaction base 1;

[0026] Step 2: sequentially install the locking nut 14, the vertical screw 3, the positioning nut 12, the pressure-bearing top beam 2 and the pressure-bearing nut 13 to form a reaction force frame system;

[0027] Step 3, put the pile 11 (usually 1-2m per section) into the pile hole 10, install the pile jack 4, and the pile jack 4 applies a reaction force to the pile 11 to press the pile 11 into the foundation 5;

[0028] Step 4, after the pile driving jack 4 has completed its stroke, the cylinder is closed, the positioning nut 12 is loosened, the pressure-bearing top beam 2 moves downward, and the pressure-bearing nut 13 moves downward with the pressure-bearing top beam 2. After the cylinder is closed, the positioning nut 12 and the pressure-bearing nut 13 are tightened;

[0029] Step 5: After the pile column 11 (usually 1-2 m per section) is pressed into the foundation 5, another section is welded to the previous section. After welding, step 4 is repeated until the pile reaches the designed depth.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A static pressure pile reinforcement reaction device for foundation anchor rods in narrow spaces. Features: It includes a reaction base, a pressure-bearing top beam, two vertical screws and a pile-driving jack, the reaction base is provided with a pile through hole in the center, anchor through holes in the four corners, and four screw connection holes around the pile through hole, each of the screw connection holes is located at the center of two adjacent anchor through holes; the anchor through holes are used to pass anchor rods so as to be fixedly connected to the foundation; the center of the pressure-bearing top beam is located directly above the pile through hole, the bottom ends of the two vertical screws are connected to the screw connection holes, the upper parts of the two vertical screws pass through the two ends of the pressure-bearing top beam, and each of the vertical screws is also provided with a liftable clamping mechanism corresponding to the top and bottom surfaces of the pressure-bearing top beam so as to adjust and fix the height of the pressure-bearing top beam; the top of the pile-driving jack is connected to the bottom center of the pressure-bearing top beam.

2. According to claim 1, the foundation anchor static pressure pile reinforcement reaction force device in a narrow space, Features: Side slots are provided at both ends of the pressure-bearing top beam so that the vertical screw rod can enter and exit the end of the pressure-bearing top beam from the side.

3. The foundation anchor static pressure pile reinforcement reaction force device in a narrow space according to claim 2, Features: The clamping mechanism comprises a positioning nut and a pressure-bearing nut, wherein the positioning nut supports the bottom surface of the pressure-bearing top beam, and the pressure-bearing nut presses the top surface of the pressure-bearing top beam.

4. The foundation anchor static pressure pile reinforcement reaction force device in a narrow space according to any one of claims 1 to 3, Features: The reaction base includes a top plate, an intermediate frame and a bottom plate which are sequentially connected from top to bottom. The four screw connection holes are all opened on the top plate. The bottom end of the vertical screw passes through the screw connection hole and is locked by a locking nut.

5. The foundation anchor static pressure pile reinforcement reaction force device in a narrow space according to claim 4, Features: An operating hole is respectively formed on the side surface of the intermediate frame corresponding to each of the screw connecting holes.

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