Self-balancing static load type pile foundation test device

Abstract

The utility model relates to the technical field of civil engineering, and discloses a self-balancing static load type pile foundation testing device which comprises a pressurizing piece and a testing pile penetrating into the ground, a jack is coaxially arranged above the testing pile, a stress block is arranged above the jack, two ends of the stress block are respectively provided with a bearing block, and the bearing blocks are connected with the pressurizing piece. The pressurizing piece is arranged above the stress block, and the pressurizing piece and the stress block are both connected with stabilizing pieces which enable the pressurizing piece and the stress block to have good stability. The device effectively solves the problems that when a test pile is tested at present, a worker needs to barrier and take down balancing weights one by one, so that the labor capacity of the worker is large, deviation is likely to occur in the barrier process, and the risk of collapse of the barrier balancing weights is likely to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a self-balanced static load type pile foundation test device. Background Technique

[0002] The static load test of pile foundation is a technology used in engineering to detect the bearing capacity of pile foundation. It is currently the most accurate and reliable test method for determining the ultimate bearing capacity of a single pile. Whether a certain dynamic load test method is mature is based on the comparison error of the static load test results.

[0003] The experimental principle of the static load of pile foundation is based on the mechanical principle of self-reaction force balance of the test pile. The self-balanced test method mainly relies on burying a single layer (or multiple layers) of load boxes at the cross-section of the pile body in advance. Currently, the static load type pile foundation test device is to vertically place a jack on the test pile to be detected, then set foot pads on both the left and right sides of the jack, set transverse and longitudinal bearing beams on the two foot pads, set the center of gravity of the transverse and longitudinal bearing beams directly above the jack, then stack counterweight blocks in a pyramid shape on the bearing beams, and finally gradually pressurize the jack and record the settlement of the test pile to be detected.

[0004] During the current test, it is necessary for the staff to stack multiple counterweight blocks one by one, and after the test, the staff also needs to remove the stacked counterweight blocks one by one. If there is a slight deviation in the position of the counterweight blocks during stacking, the center of gravity of the entire stacked counterweight blocks is not on the central axis of the measured pile foundation, which will seriously affect its measurement accuracy, and the stacked counterweight blocks are also prone to the risk of collapse. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems mentioned in the above background technique, that is, when testing the test pile, the staff needs to stack and remove the counterweight blocks one by one, which results in a large amount of labor, and it is easy to have deviations during stacking, which may cause the stacked counterweight blocks to be prone to the risk of collapse.

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

[0007] A self-balanced static load type pile foundation test device, comprising a pressurizing member and a test pile extending into the ground. A jack is coaxially arranged above the test pile, a stress block is arranged above the jack, bearing blocks are arranged at both ends of the stress block, the pressurizing member is arranged above the stress block, and stabilizing members for making them have good stability are connected to both the pressurizing member and the stress block.

[0008] Preferably, a force-bearing plate is provided below the force-bearing block. The jack and the force-bearing plate are on the same axis. A first limiting groove is formed in the load-bearing block, and the force-bearing block is located in the first limiting groove. A second limiting groove is provided on the force-bearing block, and the pressing member is located in the second limiting groove. Through the first limiting groove and the second limiting groove, the staff can quickly install the force-bearing block and the pressing member. The pressing member can transfer the weight to the force-bearing block, and the force-bearing block then transfers it to the jack through the force-bearing plate.

[0009] Preferably, the pressing member includes a pressing barrel. A barrel bottom plate is provided below the pressing barrel, and an extended barrel is provided above the pressing barrel. Connecting ends are provided on the upper and lower outer surfaces of the pressing barrel and the extended barrel and on the upper outer surface of the barrel bottom plate. The connecting ends on the pressing barrel are tightly connected to the connecting ends on the extended barrel and the barrel bottom plate through fasteners. The fasteners can be fasteners that cooperate with bolts and nuts during use. Sediment or liquid can be injected into the pressing barrel to increase the weight of the pressing barrel.

[0010] Preferably, a sealing end is provided below the extended barrel. Sealing grooves adapted to the sealing end are provided on the pressing barrel and the extended barrel. When the extended barrel is installed on the pressing barrel, the sealing end can be inserted into the sealing groove, and a sealing ring is provided in the sealing groove to have a good sealing effect. Multiple extended barrels can be provided, and multiple extended barrels can be stacked and installed together to increase the height of the pressing barrel.

[0011] Preferably, a movable groove is provided on the force-bearing block, and a limiting member for stabilizing the pressing barrel is provided in the movable groove. The limiting member can move in the movable groove. By moving the limiting member away from the barrel bottom plate, the fixation of the barrel bottom plate can be released.

[0012] Preferably, the limiting member includes a moving block. A fixing plate is provided on the moving block. A fixing rod is fixed in the movable groove. A through hole is provided on the moving block. The outer end of the fixing rod passes through the through hole on the moving block and is connected with a fixing nut. The barrel bottom plate can be fixed through the limiting member, and then the pressing barrel can be fixed, improving the overall stability of the test device.

[0013] Preferably, a fixing groove adapted to the fixing plate is provided on the barrel bottom plate. The fixing plate can be inserted into the fixing groove to quickly and stably fix the barrel bottom plate and prevent the pressing barrel from tilting.

[0014] Preferably, connecting rings are provided at both ends of the force-bearing block. A positioning groove is provided on the barrel bottom plate. A limiting rod is provided in the positioning groove. Connecting rings are provided at both ends of the limiting rod. The limiting rod is fixedly connected to the end of the traction rope through the connecting rings at both ends. The force-bearing block is fixedly connected to the end of the traction rope through the connecting rings. The limiting rod can exert a downward pressure on the barrel bottom plate by being located in the positioning groove, further improving the overall stability of the pressing barrel.

[0015] Preferably, the stabilizing member includes a fixing pile, a third connecting ring is provided at the upper end of the fixing pile, and a towing rope is fixedly connected to the third connecting ring. The overall stability of the test device can be further improved through the stabilizing member, avoiding easy collapse.

[0016] Preferably, the first connecting ring and the second connecting ring are respectively fixedly connected to a plurality of towing ropes. The towing ropes are tightened and the fixing pile is driven into the ground. The two ends of the stress block and the two ends of the limiting rod can be pulled through the towing ropes, thereby improving the overall stability of the test device.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] Through the provided pressurizing barrel, the weight of the pressurizing barrel can be increased by injecting sediment or liquid into the pressurizing barrel. Moreover, a plurality of extension barrels can be installed above the pressurizing barrel, and the plurality of extension barrels can be stacked together to increase the height of the pressurizing barrel, so that more sediment or liquid can be injected into the pressurizing barrel, and the weight of the pressurizing barrel can be increased as needed;

[0019] The provided limiting member and stabilizing member can improve the overall stability of the test device and avoid the risk of easy collapse of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic view of the overall structure of the present utility model;

[0022] Figure 2 It is an exploded view of a part of the structure of the present utility model;

[0023] Figure 3 It is an exploded view of the stress block structure of the present utility model;

[0024] Figure 4 It is a structural view of the limiting member of the present utility model;

[0025] Figure 5 It is an exploded view of the pressurizing member of the present utility model;

[0026] Figure 6 It is a structural view of the stabilizing member of the present utility model.

[0027] Description of figure numbers: 1. Jack; 2. Load-bearing block; 21. First limiting groove; 3. Force-bearing block; 31. Movable groove; 32. First connecting ring; 33. Limiting member; 331. Fixed rod; 332. Fixed nut; 333. Movable block; 334. Fixed plate; 34. Second limiting groove; 4. Pressing member; 41. Pressing barrel; 411. Extended barrel; 42. Connecting end; 43. Bottom plate of the barrel; 431. Fixed groove; 44. Positioning groove; 45. Limiting rod; 451. Second connecting ring; 5. Fixed pile; 6. Traction rope. Detailed implementation manners

[0028] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be used in other implementation manners, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0030] Those skilled in the art should understand that in the disclosure of the present utility model, the terms "longitudinal", "lateral", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position relationship shown in the drawings. It is only for the convenience of simplifying the description of the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0031] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one component can be one, while in other embodiments, the number of this component can be multiple. The term "one" should not be construed as a limitation on the quantity. Embodiment

[0032] Please refer to Figures 1 - 6 , a self-balanced static load pile foundation test device, including a pressing member 4 and a test pile that penetrates deep into the ground. A jack 1 is coaxially arranged above the test pile, a force-bearing block 3 is arranged above the jack 1, load-bearing blocks 2 are arranged at both ends of the force-bearing block 3, the pressing member 4 is arranged above the force-bearing block 3, and stabilizing members for making them have good stability are connected to both the pressing member 4 and the force-bearing block 3.

[0033] There is a force-bearing plate below the force-bearing block 3. The jack 1 and the force-bearing plate are on the same axis. A first limiting groove 21 is provided on the bearing block 2, and the force-bearing block 3 is located in the first limiting groove 21. A second limiting groove 34 is provided on the force-bearing block 3, and the pressing member 4 is located in the second limiting groove 34. Through the first limiting groove 21 and the second limiting groove 34, the staff can quickly install the force-bearing block 3 and the pressing member 4. The pressing member 4 can transmit the weight to the force-bearing block 3, and the force-bearing block 3 then transmits it to the jack 1 through the force-bearing plate.

[0034] Furthermore, the pressing member 4 includes a pressing barrel 41. There is a barrel bottom plate 43 below the pressing barrel 41, and an extension barrel 411 above the pressing barrel 41. Connecting ends 42 are provided on the upper and lower outer surfaces of the pressing barrel 41 and the extension barrel 411 and on the upper outer surface of the barrel bottom plate 43. The connecting ends 42 on the pressing barrel 41 are fixedly connected to the connecting ends 42 on the extension barrel 411 and the barrel bottom plate 43 through fasteners. The fasteners can be fasteners composed of bolts and nuts when in use. Sediment or liquid can be injected into the pressing barrel 41 to increase the weight of the pressing barrel 41. A discharge pipe communicating with the inside of the pressing barrel 41 is provided on the pressing barrel 41, and a valve is provided on the discharge pipe. Through the discharge pipe, the sediment or liquid inside the pressing barrel 41 can be discharged.

[0035] There is a sealing end below the extension barrel 411. Sealing grooves adapted to the sealing end are provided on both the pressing barrel 41 and the extension barrel 411. When the extension barrel 411 is installed on the pressing barrel 41, the sealing end can be inserted into the sealing groove, and a sealing ring is provided in the sealing groove to have a good sealing effect. Multiple extension barrels 411 can be provided, and the multiple extension barrels 411 can be stacked and installed together to increase the height of the pressing barrel 41.

[0036] A movable groove 31 is provided on the force-bearing block 3, and a limiting member 33 for stabilizing the pressing barrel 41 is provided in the movable groove 31. The limiting member 33 can move in the movable groove 31. By moving the limiting member 33 away from the barrel bottom plate 43, the fixation of the barrel bottom plate 43 can be released.

[0037] Furthermore, the limiting member 33 includes a moving block 333. A fixing plate 334 is provided on the moving block 333. A fixing rod 331 is fixed in the movable groove 31. A through hole is provided on the moving block 333, and the outer end of the fixing rod 331 passes through the through hole on the moving block 333 and is connected with a fixing nut 332. Through the limiting member 33, the barrel bottom plate 43 can be fixed, and then the pressing barrel 41 can be fixed, improving the overall stability of the test device.

[0038] A fixing groove 431 adapted to the fixing plate 334 is provided on the barrel bottom plate 43. The fixing plate 334 can be inserted into the fixing groove 431 to quickly and stably fix the barrel bottom plate 43 and prevent the pressing barrel 41 from tilting.

[0039] It should be noted that connection rings one 32 are provided at both ends of the force-bearing block 3, positioning grooves 44 are provided on the barrel bottom plate 43, a limiting rod 45 is provided in the positioning groove 44, connection rings two 451 are provided at both ends of the limiting rod 45, and the limiting rod 45 is fixedly connected to the end of the traction rope 6 through the connection ring two 451. The force-bearing block 3 is fixedly connected to the end of the traction rope 6 through the connection ring one 32. The limiting rod 45 can exert a downward pressure on the barrel bottom plate 43 when it is in the positioning groove 44, which can further improve the overall stability of the pressure barrel 41.

[0040] It should be supplemented that the stabilizing member includes a fixing pile 5. A connection ring three is provided at the upper end of the fixing pile 5, and a traction rope 6 is fixedly connected to the connection ring three. The overall stability of the test device can be further improved through the stabilizing member, and it is avoided that it is prone to collapse.

[0041] Among them, the connection ring one 32 and the connection ring two 451 are respectively fixedly connected to a plurality of traction ropes 6. The traction ropes 6 are tightened and the fixing pile 5 is driven into the ground. The two ends of the force-bearing block 3 and the two ends of the limiting rod 45 can be pulled through the traction ropes 6, thereby improving the overall stability of the test device.

[0042] When the present utility model is in use, when testing a test pile, sediment or liquid such as water can be injected into the pressure barrel 41, thereby increasing the weight of the pressure barrel 41, and a relatively large pressure can be exerted on the lower part. A plurality of extension barrels 411 can be provided, and the plurality of extension barrels 411 can be stacked and installed together, thereby increasing the height of the pressure barrel 41, enabling more sediment or liquid to be injected into the pressure barrel 41, and the weight of the pressure barrel 41 can be increased according to needs, and a relatively large weight pressure can be exerted on the lower test pile. After the test is completed, by opening the valve on the discharge pipe, the sediment or liquid in the pressure barrel 41 can be discharged. After the pressure barrel 41 is emptied, it is more convenient for the staff to remove the pressure barrel 41;

[0043] During the test, the pressure barrel 41 is placed in the second limiting groove 34 on the force-bearing block 3, and the pressure barrel 41 can be quickly positioned and placed. Then, the fixing nut 332 is rotated. The fixing nut 332 can move inward through the threaded fit with the fixing rod 331, and then push the moving block 333 to move inward. The fixing plate 334 on the moving block 333 is inserted into the fixing groove 431 on the barrel bottom plate 43, which can quickly and stably fix the bottom of the pressure barrel 41, making the pressure barrel 41 have better stability and avoiding the situation of tilting and collapsing. Moreover, both ends of the limiting rod 45 are respectively connected to the fixing pile 5 through the traction rope 6, and both ends of the force-bearing block 3 are also respectively connected to the fixing pile 5 through the traction rope 6. Then, the fixing pile 5 is driven into the ground, which can further fix the whole pressure barrel 41 and the whole force-bearing block 3, and further improve the overall stability of the test device, and effectively avoid the risk that the test device will tilt and collapse.

[0044] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The object of the present utility model has been fully and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principles, any variations or modifications can be made to the embodiments of the present utility model.

Claims

1. A self-balancing static load pile foundation test device, characterized in that: Including test piles driven deep into the ground, A jack (1) is coaxially arranged above the test pile, a force-bearing block (3) is arranged above the jack (1), and load-bearing blocks (2) are arranged at both ends of the force-bearing block (3); A pressure member (4) is arranged above the force-bearing block (3); both the pressure member (4) and the force-bearing block (3) are connected with a stabilizing member to ensure good stability.

2. A self-balancing static load pile foundation test device according to claim 1, characterized in that: A force plate is provided below the force block (3); the jack (1) and the force plate are coaxially located; a limiting groove (21) is provided on the force block (2); the force block (3) is located in the limiting groove (21); a limiting groove (34) is provided on the force block (3); and the pressure member (4) is located in the limiting groove (34).

3. A self-balancing static load pile foundation test device according to claim 2, characterized in that: The pressurizing component (4) comprises a pressurizing barrel (41), a barrel bottom plate (43) is provided below the pressurizing barrel (41), an extended barrel (411) is provided above the pressurizing barrel (41), connecting ends (42) are provided on upper and lower sides of the outer surfaces of the pressurizing barrel (41) and the extended barrel (411) and on the upper side of the outer surface of the barrel bottom plate (43), and the connecting ends (42) on the pressurizing barrel (41) are fastened to the connecting ends (42) on the extended barrel (411) and the barrel bottom plate (43) by fasteners.

4. A self-balancing static load pile foundation test device according to claim 3, characterized in that: A sealing end is provided below the pressurizing barrel (41), and a sealing groove adapted to the sealing end is provided on the pressurizing barrel (41) and above the pressurizing barrel (41).

5. The self-balancing static load pile foundation test device according to claim 4, characterized in that: The force bearing block (3) is provided with a movable groove (31), and a limiting member (33) for stabilizing the pressurized barrel (41) is provided in the movable groove (31).

6. The self-balancing static load pile foundation test device according to claim 5, characterized in that: The limiting member (33) comprises a moving block (333), a fixing plate (334) is provided on the moving block (333), a fixing rod (331) is fixed in the movable groove (31), a through hole is provided on the moving block (333), and the outer end of the fixing rod (331) passes through the through hole on the moving block (333) and is connected to a fixing nut (332).

7. The self-balancing static load pile foundation test device according to claim 6, characterized in that: The barrel bottom plate (43) is provided with a fixing groove (431) adapted to the fixing plate (334).

8. The self-balancing static load pile foundation test device according to claim 7, characterized in that: Both ends of the force-bearing block (3) are provided with a connecting ring 1 (32), a positioning groove (44) is provided on the barrel bottom plate (43), a limiting rod (45) is provided in the positioning groove (44), and both ends of the limiting rod (45) are provided with a connecting ring 2 (451).

9. The self-balancing static load pile foundation test device according to claim 8, characterized in that: The stabilizing member comprises a fixing pile (5), the upper end of the fixing pile (5) is provided with a connecting ring three, and a traction rope (6) is fixedly connected to the connecting ring three.

10. The self-balancing static load pile foundation test device according to claim 9, characterized in that: The connecting ring 1 (32) and the connecting ring 2 (451) are respectively fixedly connected to a plurality of traction ropes (6); the traction ropes (6) are tightened and the fixing piles (5) are driven into the ground.

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