Static load test pile head hoop device

Abstract

The utility model relates to the technical field of static load tests, and discloses a static load test pile head hoop device which comprises two hoops which are symmetrically arranged, and bolts and first nuts which are matched with each other are arranged at the positions of wing plates on the two sides of each hoop. And the tops of the two hoops are provided with the same end head plate, the tops of the two hoops are symmetrically and fixedly provided with two screw rods, the surface of the end head plate is provided with mounting holes for the screw rods to penetrate through, and the rod walls of the screw rods are provided with second nuts. According to the utility model, the end plate and the hoop can be stably installed, the end plate is prevented from falling off from the top of the hoop, and the efficiency of a static load test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of static load testing, in particular to a pile head clamp device for static load testing. Background Art

[0002] Before the construction of pile foundation engineering, test piles should be carried out. After the construction of engineering piles is completed, 1% and no less than 3 engineering piles should be selected for static load test according to the specifications. Before the static load test of all test piles such as bored cast-in-place piles, CFG piles and prestressed pipe piles, the pile heads should be strengthened to ensure that the pile heads are not crushed.

[0003] For example, the patent number CN210712987U discloses a simple and reusable static load test pile steel pile cap. The steel pile cap is composed of a pair of semicircular steel cylinders that are embraced and tightly clamped on the upper end of the pile to form a steel clamp on the upper end of the pile. The top edge of the steel clamp on the upper end of the pile is not lower than the height of the top plane of the pile. An end steel plate is placed on the steel clamp on the upper end of the pile, and the load test equipment is installed on the end steel plate.

[0004] In the above scheme, the end plate is placed on the top of the clamp, and the end plate is prone to fall off during the test, which makes the test unable to continue and affects the efficiency of the test. Therefore, a static load test pile clamp device is proposed. Utility Model Content

[0005] The utility model aims to solve the problem that the end plate cannot be stably installed in the prior art, and proposes a static load test pile head clamp device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A static load test pile head clamp device comprises two symmetrically arranged clamps, wherein the two side wing plates of the two clamps are provided with bolts and first nuts that cooperate with each other; the tops of the two clamps are provided with the same end plate, and the tops of the two clamps are symmetrically fixed with two screw rods, the surfaces of the end plates are provided with mounting holes for the screw rods to pass through, and the rod walls of the screw rods are provided with second nuts.

[0008] Preferably, a withdrawal groove is provided on the upper surface of the end plate at the position of the mounting hole, and the screw rod and the second nut are both located inside the mounting hole.

[0009] Preferably, a cover plate is magnetically adsorbed at the notch of the withdrawal slot.

[0010] Preferably, a first magnet block is fixedly provided on the lower surface of the cover plate, and a second magnet block is fixedly provided on both sides of the withdrawal groove, and the first magnet block and the second magnet block are arranged by magnetic adsorption.

[0011] Preferably, a buckling groove is provided on one side of the withdrawal groove and at a position corresponding to the position of the cover plate.

[0012] Preferably, the clamp and the end plate are both made of stainless steel.

[0013] Compared with the prior art, the utility model provides a static load test pile head clamp device, which has the following beneficial effects:

[0014] 1. The pile head clamp device for static load test is provided with a screw rod and a second nut. When the end plate is placed on the top of the clamp, the mounting hole on the end plate is inserted into the rod wall of the screw rod. Then, the second nut cooperates with the screw rod to ensure a firm connection between the end plate and the clamp, thereby preventing the end plate from falling off from the top of the clamp, thereby improving the efficiency of the static load test.

[0015] 2. The pile head clamp device for static load test has a withdrawal groove and a cover plate, and the screw and the second nut are both arranged inside the withdrawal groove. At the same time, the cover plate can seal the withdrawal groove to prevent the screw and the second nut from being exposed and contacting the load test equipment, thereby improving the effect of the static load test.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can firmly install the end plate and the clamp to prevent the end plate from falling off from the top of the clamp, thereby improving the efficiency of the static load test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a pile head clamp device for static load testing proposed by the utility model;

[0018] Figure 2 for Figure 1 Top view of the middle clamp;

[0019] Figure 3 for Figure 1 Top view of the middle end header board;

[0020] Figure 4 for Figure 1 A magnified view of the structure of part A in the middle.

[0021] In the figure: 1. clamp; 2. bolt; 3. first nut; 4. end plate; 5. screw; 6. mounting hole; 7. second nut; 8. withdrawal groove; 9. cover plate; 10. first magnet block; 11. second magnet block; 12. buckle groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Reference Figure 1-3 , a static load test pile head clamp device, comprising two symmetrically arranged clamps 1, both side wing plates of the two clamps 1 are provided with bolts 2 and first nuts 3 that cooperate with each other, the two clamps 1 are wrapped around the pile head, and then the two clamps 1 are firmly connected by the cooperation of the bolts 2 and the first nuts 3; the tops of the two clamps 1 are provided with the same end plate 4, the clamps 1 and the end plate 4 are both made of stainless steel, and the stainless steel material has high corrosion resistance and strength, so that the pile head can be protected; the tops of the two clamps 1 are symmetrically fixed with two screw rods 5, the surface of the end plate 4 is provided with a mounting hole 6 for the screw rod 5 to pass through, and the rod wall of the screw rod 5 is provided with a second nut 7, when the end plate 4 is placed on the top of the clamp 1, the mounting hole 6 on the end plate 4 is inserted into the rod wall of the screw rod 5, and then the second nut 7 cooperates with the screw rod 5 to make the end plate 4 and the clamp 1 firmly connected, so as to prevent the end plate 4 from falling off from the top of the clamp 1, thereby improving the efficiency of the static load test.

[0025] Reference Figure 1 and 4 , a withdrawal groove 8 is provided on the upper surface of the end plate 4 and at the position of the mounting hole 6, the screw 5 and the second nut 7 are both located inside the mounting hole 6, and a cover plate 9 is magnetically adsorbed at the notch of the withdrawal groove 8, the screw 5 and the second nut 7 are both arranged inside the withdrawal groove 8, and the cover plate 9 can seal the withdrawal groove 8, which can prevent the screw 5 and the second nut 7 from being exposed and contacting the load test equipment, thereby improving the effect of the static load test; a first magnet block 10 is fixedly provided on the lower surface of the cover plate 9, and a second magnet block 11 is fixedly provided on both sides of the withdrawal groove 8, the first magnet block 10 and the second magnet block 11 are magnetically adsorbed, and a buckle groove 12 is provided on one side of the withdrawal groove 8 and at a position corresponding to the position of the cover plate 9, the cover plate 9 is adsorbed and fixed at the notch of the withdrawal groove 8 by the first magnet block 10 and the second magnet block 11, when it is necessary to remove the cover plate 9, just insert a finger into the buckle groove 12, and then buckle one side of the cover plate 9 upward to separate the first magnet block 10 and the second magnet block 11.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A static load test pile head clamp device, comprising two symmetrically arranged clamps (1), characterized in that: Mutually matching bolts (2) and first nuts (3) are provided at the wing plates on both sides of the two hoops (1); The tops of the two hoops (1) are provided with a same end plate (4), the tops of the two hoops (1) are symmetrically fixed with two screw rods (5), the surface of the end plate (4) is provided with a mounting hole (6) for the screw rod (5) to pass through, and the rod wall of the screw rod (5) is provided with a second nut (7).

2. A static load test pile head clamp device according to claim 1, characterized in that: A withdrawal groove (8) is provided on the upper surface of the end plate (4) at the position of the mounting hole (6), and the screw rod (5) and the second nut (7) are both located inside the mounting hole (6).

3. A static load test pile head clamp device according to claim 2, characterized in that: A cover plate (9) is magnetically adsorbed at the notch of the withdrawal slot (8).

4. A static load test pile head clamp device according to claim 3, characterized in that: A first magnet block (10) is fixedly provided on the lower surface of the cover plate (9), and a second magnet block (11) is fixedly provided on both sides of the withdrawal groove (8), and the first magnet block (10) and the second magnet block (11) are arranged by magnetic adsorption.

5. A static load test pile head clamp device according to claim 3, characterized in that: A buckling groove (12) is provided on one side of the withdrawal groove (8) at a position corresponding to the position of the cover plate (9).

6. A static load test pile head clamp device according to claim 1, characterized in that: The clamp (1) and the end plate (4) are both made of stainless steel.

Images