Vertical compression resistance static load test device for single pile

Abstract

The utility model relates to the technical field, in particular to a single-pile vertical compression resistance static load test device which comprises a loading plate, a jack, a pressure bearing disc, a loading plate, a supporting pier, a limiting rod and a balancing weight. The load plate is arranged at the top of the test pile; the jack is arranged at the center of the top surface of the load plate; the pressure-bearing disc is arranged at the top of the output end of the jack; the loading plate is arranged on the top surface of the pressure-bearing disc, and the pressure-bearing disc is connected with a center stress point of the bottom surface of the loading plate; the two supporting piers are symmetrically supported at the two ends of the bottom face of the loading plate. The multiple limiting rods are arranged on the edge of the top face of the loading plate. And the plurality of balancing weights are stacked on the loading plate. The limiting rods are arranged on the edge of the top face of the loading plate, when the balancing weights are stacked on the loading plate, the balancing weights are limited among the limiting rods, when the balancing weights are placed unstably and slide off, the limiting rods effectively prevent the balancing weights from falling off, and therefore potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field, and more specifically, particularly to a vertical compressive static load test device for a single pile. Background Art

[0002] The static load test is currently recognized as the most direct and reliable test method for testing the vertical compressive bearing capacity of foundation piles. At present, the load reaction device is to use a steel beam to set up a load-bearing platform at the pile head, pile heavy objects on it, and rely on the jack placed on the pile head to gradually raise the platform, thereby applying force to the pile body. The main beam of the reaction device can be made of steel or self-processed box beams. The shape of the platform can be set to square or rectangular as needed, and the heavy objects used for loading can be precast concrete blocks, steel ingots, etc.

[0003] The utility model patent with the announcement number CN211006787U discloses a single pile vertical compressive static load test device, including a test main beam and two front and rear pier legs with isosceles trapezoidal cross sections. The test main beam is longitudinally mounted at the center position above the front and rear pier legs. The front and rear sides of the test main beam are respectively fixed to the pier legs through the pier leg main beam connection fixing clamps on both sides, wherein the pier leg main beam connection fixing clamp located on one side is locked by the main beam fixing clamp above and fixedly connected to the pier legs by bolts below. The device is easy to assemble quickly on site, so that the load-bearing platform and the stacking weights form a whole, ensuring that the force is balanced. Since the load-bearing platform and the stacking weights can form a whole, the load-bearing platform is also used as a part of the stacking weights, thereby saving part of the transportation of the stacking weights. However, when the experimental device is used, the stacking weights are directly placed on the steel grid for stacking, and there is no limit structure, which has the potential safety hazard of the stacking weights slipping due to the unstable placement. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] A device for a vertical compressive static load test of a single pile includes a load plate, a jack, a pressure plate, a load plate, a support pier, a limit rod, and a counterweight. The load plate is arranged on the top of the test pile; the jack is arranged at the center of the top surface of the load plate; the pressure plate is arranged on the top of the output end of the jack; the load plate is arranged on the top surface of the pressure plate, and the pressure plate is connected to the center force point of the bottom surface of the load plate; the two support piers are symmetrically supported at both ends of the bottom surface of the load plate; a plurality of limit rods are arranged on the edge of the top surface of the load plate; and a plurality of counterweights are stacked on the load plate.

[0006] Furthermore, a rotationally fixed connection piece is provided between one end of the limiting rod and the edge of the load plate, and the limiting rod can be selectively perpendicular or parallel to the top surface of the load plate through the rotationally fixed connection piece.

[0007] Furthermore, the rotating fixed connecting member is a 90° self-locking folding hinge.

[0008] Furthermore, a receiving groove is provided on the top surface of the load plate, one end of the receiving groove passes through the side surface of the load plate and corresponds one-to-one with the limiting rod, and the rotating fixed connecting piece is arranged at one end of the receiving groove passing through the side surface of the load plate.

[0009] Furthermore, the counterweight block is in a plate-like structure that is compatible with the load-bearing plate, and a plurality of the counterweight blocks are stacked upward in sequence.

[0010] Furthermore, at least one first limiting groove is formed on the top surface of the load plate, a limiting protrusion matched with the first limiting groove is provided on the bottom surface of the counterweight block, and a second limiting groove with the same structure as the first limiting groove is formed on the top surface of the counterweight block.

[0011] Furthermore, it also includes a single pile sleeve, which is in the shape of a cylinder with an open lower end, and is sleeved on the upper end of the test pile and detachably connected to the load plate.

[0012] Furthermore, the single pile sleeve is detachably connected to the load plate via screws.

[0013] Furthermore, a distance meter is vertically arranged on the bottom surface of the load plate, and two distance meters are symmetrically arranged on both sides of the pressure plate, and the distance meter is used to measure the distance between the bottom surfaces of the load plate.

[0014] Furthermore, a lifting groove is provided on the bottom surface of the counterweight block, and two lifting grooves are symmetrically arranged and pass through the counterweight block at both ends.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model is used for the single pile vertical compressive static load test device, by arranging a plurality of limit rods on the edge of the top surface of the load plate, when the counterweight block is stacked on the load plate, the counterweight block is restricted between the plurality of limit rods, when the counterweight block is placed unsteadily and slides, the limit rods effectively prevent the counterweight block from falling, thereby eliminating the safety hazard.

[0017] In the utility model, a single pile vertical compressive static load test device is provided with a rotating fixed connection piece between one end of the limit rod and the edge of the load plate, and the limit rod can be selectively vertical or parallel to the top surface of the load plate through the rotating fixed connection piece. The limit rod is arranged in a foldable form, which is unfolded when in use and folded when not in use to reduce the volume and facilitate transportation. By providing a receiving groove on the top surface of the load plate, the limit rod can be accommodated in the receiving groove when folded, thereby further reducing the volume.

[0018] In the utility model, the device for the vertical compressive static load test of a single pile is provided, and the counterweight block is in a plate-like structure matched with the load plate, and a plurality of counterweight blocks are stacked upward in sequence, with one counterweight block placed in each layer. In addition, at least one first limiting groove is provided on the top surface of the load plate, and a limiting protrusion matched with the limiting groove is provided on the bottom surface of the counterweight block, and a second limiting groove for accommodating the limiting protrusion is also provided on the top surface of the counterweight block, so that when a plurality of counterweight blocks are stacked upward in sequence, each layer of counterweight blocks can be limited by the limiting protrusion, effectively preventing them from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of a device for a vertical compressive static load test of a single pile in an embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of the overall structure of the single pile vertical compressive static load test device from another perspective in an embodiment of the utility model.

[0022] Figure 3 It is a partial structural schematic diagram of a single pile vertical compressive static load test device in an embodiment of the utility model.

[0023] Figure 4 yes Figure 3 Schematic diagram of the structure of another state of the single pile vertical compressive static load test device.

[0024] Figure 5 It is a structural schematic diagram of the counterweight block in the embodiment of the utility model.

[0025] Figure 6 It is an exploded view of the connection structure of the single pile sleeve and the load plate in the embodiment of the utility model.

[0026] In the figure: 1. load plate; 2. test pile; 3. jack; 4. pressure plate; 5. load plate; 6. support pier; 7. limit rod; 8. counterweight; 9. rotation fixed connection piece; 10. receiving groove; 11. first limit groove; 12. limit protrusion; 13. second limit groove; 14. single pile sleeve; 15. screw; 16. distance meter; 17. lifting groove; 18. display screen; 19. handle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 , Figure 2 As shown, the single pile vertical compressive static load test device in this embodiment includes a load plate 1, a jack 3, a pressure plate 4, a load plate 5, a support pier 6, a limit rod 7 and a counterweight 8. The load plate 1 is arranged on the top of the test pile 2; the jack 3 is arranged at the center of the top surface of the load plate 1; the pressure plate 4 is arranged on the top of the output end of the jack 3; the load plate 5 is arranged on the top surface of the pressure plate 4, and the pressure plate 4 is connected to the center force point of the bottom surface of the load plate 5; two support piers 6 are symmetrically supported at both ends of the bottom surface of the load plate 5; a number of limit rods 7 are arranged on the edge of the top surface of the load plate 5; and a number of counterweights 8 are stacked on the load plate 5.

[0029] In this embodiment, the pressure plate 4 is circular, the load plate 5 is rectangular, and the center of the pressure plate 4 corresponds to the intersection of the diagonal lines of the load plate 5. The cross section of the support pier 6 is an isosceles trapezoidal structure, and the support pier 6 is symmetrically arranged at both ends of the length direction below the load plate 5, and the length of the support pier 6 is the same as the width of the load plate 5.

[0030] In this embodiment, if Figure 3 , Figure 4 As shown, a rotation fixing connection member 9 is provided between one end of the limit rod 7 and the edge of the load plate 5, and the limit rod 7 can be selectively perpendicular or parallel to the top surface of the load plate 5 through the rotation fixing connection member 9. Specifically, the rotation fixing connection member 9 is a 90° self-locking folding hinge, which is fixed to the rotation end of the limit rod 7 and one side surface close to the load plate 5 by screws.

[0031] In this embodiment, a receiving groove 10 is provided on the top surface of the load plate 5, one end of which passes through the side of the load plate 5, and the receiving groove 10 is arranged one by one with the limiting rod 7, and the other half of the 90° self-locking folding hinge is fixed to the bottom surface of one end of the receiving groove 10 passing through the side of the load plate 5 by screws, and when the limiting rod 7 is folded and accommodated in the receiving groove 10, the top surface of the limiting rod 7 is flush with the top surface of the load plate 5. A handle 19 is fixed on the side of the limiting rod 7 which is away from the rotating fixed connecting member 9 and opposite to the rotating fixed connecting member 9, and the user can hold the handle 19 to pull the limiting rod 7 out of the receiving groove 10 in the unfolded state for use, thereby facilitating the limiting rod 7 to be pulled out of the receiving groove 10.

[0032] The accommodating groove 10 has the same width as the limiting rod 7, or the accommodating groove 10 is 1-3 mm wider than the limiting rod 7. The width of the limiting rod 7 is wider than the width of the 90° self-locking folding hinge, so that when the limiting rod 7 is folded, it is easy to reach into the accommodating groove 10 to operate the 90° self-locking folding hinge to fold it.

[0033] In this embodiment, if Figure 5 As shown, the counterweight block 8 is a plate-like structure that matches the load plate 5. Several counterweight blocks 8 are stacked upward in sequence, with one counterweight block 8 placed in each layer. At least one first limiting groove 11 is provided on the top surface of the load plate 5, and the first limiting groove 11 must avoid the receiving groove 10. The bottom surface of the counterweight block 8 is provided with a limiting protrusion 12 that matches the first limiting groove 11, and the top surface of the counterweight block 8 is provided with a second limiting groove 13 with the same structure as the first limiting groove 11. Therefore, when multiple counterweight blocks 8 are stacked upward in sequence, each layer of counterweight blocks 8 can be limited by the limiting protrusion 12 to effectively prevent slipping.

[0034] A lifting groove 17 is provided on the bottom surface of the counterweight block 8. The two lifting grooves 17 are symmetrically arranged and perpendicular to the length direction of the counterweight block 8. Both ends of the counterweight block 8 penetrate the counterweight block 8, so as to facilitate lifting.

[0035] In this embodiment, a distance meter 16 is vertically arranged on the bottom surface of the load plate 5. Two distance meters 16 are symmetrically arranged on both sides of the pressure plate 4. The distance meter 16 is used to measure the distance between the bottom surfaces of the load plate 5. A display screen 18 for displaying the distance measurement value is embedded on the side of the load plate 5. Whether the values ​​measured by the two distance meters 16 are the same or not can be preliminarily judged whether the load plate 5 is horizontal.

[0036] The single pile vertical compressive static load test device in this embodiment also includes a single pile sleeve 14, such as Figure 6As shown, the single pile sleeve 14 is in a cylindrical shape with an open lower end, and the single pile sleeve 14 is sleeved on the upper end of the test pile 2 and is detachably connected to the load plate 1. Specifically, a screw hole is provided on the top surface of the single pile sleeve 14, and a screw groove is provided on the bottom surface of the load plate 1. The single pile sleeve 14 is detachably connected to the load plate 1 through screws 15, so that the corresponding single pile sleeve 14 can be replaced according to the single piles of different diameters.

[0037] The working principle of the single pile vertical compressive static load test device in this embodiment is:

[0038] By setting a plurality of limit rods 7 on the edge of the top surface of the load plate 5, when the counterweight 8 is stacked on the load plate 5, the counterweight 8 is limited between the plurality of limit rods 7. When the counterweight 8 is not placed stably and slides, the limit rods 7 effectively prevent the counterweight 8 from falling, thereby eliminating safety hazards. A rotating fixed connection member 9 is provided between one end of the limit rod 7 and the edge of the load plate 5. The limit rod 7 can be selectively vertical or parallel to the top surface of the load plate 5 by rotating the fixed connection member 9. The limit rod 7 is arranged in a foldable form, which is unfolded when in use and folded to reduce the volume when not in use, so as to facilitate transportation. By providing a receiving groove 10 on the top surface of the load plate 5, the limit rod 7 can be accommodated in the receiving groove 10 when folded, thereby further reducing the volume. The counterweight 8 is a plate-like structure adapted to the load plate 5. A plurality of counterweights 8 are stacked upward in sequence, and a counterweight 8 is placed on each layer. In addition, at least one first limiting groove 11 is provided on the top surface of the load plate 5, and a limiting protrusion 12 adapted to the limiting groove is provided on the bottom surface of the counterweight block 8. A second limiting groove 13 for accommodating the limiting protrusion 12 is also provided on the top surface of the counterweight block 8. Therefore, when multiple counterweight blocks 8 are stacked upward in sequence, each layer of counterweight blocks 8 can be limited by the limiting protrusion 12 to effectively prevent slipping.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for testing the vertical compressive static load of a single pile, characterized in that: include: A load plate (1) is arranged on the top of the test pile (2); A jack (3) is arranged at the center of the top surface of the load plate (1); A pressure plate (4) is arranged on the top of the output end of the jack (3); A load-bearing plate (5) is arranged on the top surface of the pressure plate (4), and the pressure plate (4) is connected to the center force point of the bottom surface of the load-bearing plate (5); Support piers (6), two of the support piers (6) are symmetrically supported at two ends of the bottom surface of the load-bearing plate (5); Limit rods (7), a plurality of the limit rods (7) are arranged on the edge of the top surface of the load-bearing plate (5); The counterweight block (8) is stacked on the load plate (5).

2. The device for testing the vertical compressive static load of a single pile according to claim 1, characterized in that: A rotationally fixed connection piece (9) is provided between one end of the limiting rod (7) and the edge of the load-bearing plate (5), and the limiting rod (7) can be selectively perpendicular or parallel to the top surface of the load-bearing plate (5) through the rotationally fixed connection piece (9).

3. The device for testing the vertical compressive static load of a single pile according to claim 2, characterized in that: The rotating fixed connection member (9) is a 90° self-locking folding hinge.

4. The device for testing the vertical compressive static load of a single pile according to claim 3, characterized in that: The top surface of the load-bearing plate (5) is provided with a receiving groove (10), one end of which passes through the side surface of the load-bearing plate (5) and corresponds one to one with the limiting rod (7), and the rotating fixed connecting member (9) is arranged at one end of the receiving groove (10) passing through the side surface of the load-bearing plate (5).

5. The device for testing the vertical compressive static load of a single pile according to claim 4, characterized in that: The counterweight block (8) is in the form of a plate-like structure that matches the load-bearing plate (5), and a plurality of the counterweight blocks (8) are stacked upward in sequence.

6. The device for a single pile vertical compressive static load test according to claim 5, characterized in that: The load-bearing plate (5) is provided with at least one first limiting groove (11) on its top surface, the counterweight block (8) is provided with a limiting protrusion (12) matching the first limiting groove (11) on its bottom surface, and the counterweight block (8) is provided with a second limiting groove (13) having the same structure as the first limiting groove (11) on its top surface.

7. The device for a single pile vertical compressive static load test according to claim 1, characterized in that: It also comprises a single pile sleeve (14), which is in the shape of a cylinder with an open lower end. The single pile sleeve (14) is sleeved on the upper end of the test pile (2) and is detachably connected to the load plate (1).

8. The device for a single pile vertical compressive static load test according to claim 7, characterized in that: The single pile sleeve (14) is detachably connected to the load plate (1) via screws (15).

9. The device for a single pile vertical compressive static load test according to claim 1, characterized in that: A distance meter (16) is vertically arranged on the bottom surface of the load plate (5), and two distance meters (16) are symmetrically arranged on both sides of the pressure plate (4). The distance meter (16) is used to measure the distance between the bottom surfaces of the load plate (5).

10. The device for testing the vertical compressive static load of a single pile according to any one of claims 4 to 6, characterized in that: The bottom surface of the counterweight block (8) is provided with a lifting groove (17), and the two lifting grooves (17) are symmetrically arranged and penetrate the counterweight block (8) at both ends.

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