Pile foundation bearing capacity testing device

Abstract

The utility model relates to the field of engineering detection, and discloses a pile foundation bearing capacity testing device which comprises a foundation, a base is placed on the upper surface of the foundation, a placing groove is formed in the upper surface of the base, a leveling assembly is arranged on the upper surface of the base, and a position fixing assembly is arranged on the upper surface of the base. The position fixing assembly comprises a fixing pile, a threaded groove is formed in the outer wall of the fixing pile, a holding rod is fixedly connected to the top end of the outer wall of the fixing pile, a threaded rod is connected to the inner wall of the fixing pile in a threaded mode, a connecting rod is fixedly connected to the upper surface of the threaded rod, and a rotating disc is fixedly connected to the upper surface of the connecting rod. According to the utility model, through the cooperation of the position fixing assembly, the base can be stably fixed on the ground, the sliding deviation of the base is avoided, the stability of the device in the test process is ensured, a reliable working environment is provided for the bearing capacity test of the pile foundation, and the accuracy and reliability of the test result are ensured.

Description

Technical Field

[0001] The utility model relates to the field of engineering detection, in particular to a pile foundation bearing capacity testing device. Background Technique

[0002] In the field of modern construction engineering, as an important basic structure of a building, the bearing capacity of a pile foundation is directly related to the safety, stability and durability of the building. With the acceleration of the urbanization process and the continuous emergence of various large-scale, super-high-rise buildings and complex infrastructure, the accurate evaluation of the bearing capacity of pile foundations has become crucial.

[0003] After retrieval, the Chinese patent publication number: CN220414331U discloses a detection structure for testing the bearing capacity of frozen soil pile foundations, belonging to the technical field of frozen soil pile foundations. The key points of its technical solution include a cross beam and a pile foundation body. A testing mechanism is bolted to the bottom of the cross beam, a reinforcing steel is fixedly connected to the top of the cross beam, a lifting assembly is bolted to the bottom of the cross beam, a base is bolted to the bottom of the lifting assembly, and a main counterweight block is placed on the top of the base. The testing mechanism includes a hydraulic rod, a jack and a top plate. The top of the top plate is bolted to the bottom of the jack, which solves the problem that most of the existing detection structures for testing the bearing capacity of frozen soil pile foundations place the jack on the top of the frozen soil pile foundation, and then the staff stack counterweight stones in turn. When the counterweight is completed, the staff needs to install the testing equipment for testing. Due to the poor fixing of the spliced structure, it is easy to slide and collapse during use, and the safety is relatively low.

[0004] Although this device has certain improvements, there are still some problems. This device is used on the frozen soil surface. Because the frozen soil surface is relatively smooth, if it is used on an inclined section, the device is prone to sliding and has poor stability. Moreover, when this device is used on an inclined section, the orientation of the jack cannot be kept perpendicular to the horizontal plane, which causes the pressure to be inclined when pressing downwards, and further affects the testing accuracy. Therefore, a pile foundation bearing capacity testing device is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a pile foundation bearing capacity testing device, aiming to improve the problems of easy sliding and poor stability of the existing pile foundation bearing capacity testing device when used on the frozen soil surface.

[0006] To achieve the above object, the present utility model adopts the following technical solution: A pile foundation bearing capacity testing device, including a foundation, a base is placed on the upper surface of the foundation, a placement groove is provided on the upper surface of the base, a leveling component is arranged on the upper surface of the base, a position fixing component is arranged on the upper surface of the base, the position fixing component includes a fixing pile, a threaded groove is provided on the outer wall of the fixing pile, a grip rod is fixedly connected to the top end of the outer wall of the fixing pile, a screw rod is threadedly connected to the inner wall of the fixing pile, a connecting rod is fixedly connected to the upper surface of the screw rod, and a turntable is fixedly connected to the upper surface of the connecting rod.

[0007] As a further description of the above technical solution:

[0008] The position fixing component further includes a pressing block, a fixing plate penetrates and is slidably connected to the rear surface of the fixing pile, there are two groups of the fixing plates, and the two groups of fixing plates are symmetrically distributed front and back with the center line of the fixing pile as the axis, and the two groups of fixing plates are elastically connected by a compression spring.

[0009] As a further description of the above technical solution:

[0010] The leveling component includes a hydraulic rod, a T-shaped seat is fixedly connected to the upper surface of the hydraulic rod, a rotating shaft penetrates and is rotatably connected to the left surface of the T-shaped seat, a mounting seat is rotatably connected to the outer wall of the rotating shaft, a top plate is slidably connected to the upper surface of the mounting seat, a jack is arranged on the lower surface of the top plate, and a pressing plate is fixedly connected to the lower surface of the jack.

[0011] As a further description of the above technical solution:

[0012] The bottom end of the fixing pile is conical, the fixing pile penetrates and is threadedly connected to the lower surface of the base, and the diameter of the screw rod is larger than the diameter of the connecting rod.

[0013] As a further description of the above technical solution:

[0014] The screw rod is rotatably connected to the upper surface of the pressing block, the connecting rod, the turntable, the screw rod and the pressing block are concentric, and the pressing block is slidably connected to the inner wall of the fixing pile.

[0015] As a further description of the above technical solution:

[0016] The hydraulic rod is arranged on the upper surface of the base.

[0017] As a further description of the above technical solution:

[0018] There are two groups of the hydraulic rod, the T-shaped seat, the mounting seat and the rotating shaft, and the two groups of the hydraulic rod, the T-shaped seat, the mounting seat and the rotating shaft are symmetrically distributed front and back with the center line of the top plate as the axis.

[0019] As a further description of the above technical solution:

[0020] The T-shaped seat is set to be T-shaped.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the cooperation of the position fixing component, the base can be firmly fixed on the ground, avoiding the sliding and offset of the base, ensuring the stability of the device during the test, providing a reliable working environment for the pile foundation bearing capacity test, and guaranteeing the accuracy and reliability of the test results.

[0023] 2. In the utility model, through the cooperation of the leveling component, the hydraulic rod can be started to flexibly adjust the inclination angles of the top plate and the jack, making the jack perpendicular to the horizontal plane. Ensure that the subsequent applied pressure is perpendicular, avoid affecting the test data due to the inclined pressure, and improve the accuracy of the test data. Description of the Drawings

[0024] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 It is a side view schematic diagram of the three-dimensional structure of the base, top plate, hydraulic rod, jack, and pressing plate in the utility model;

[0026] Figure 3 It is a side view schematic diagram of the three-dimensional structure of the fixed pile and the turntable in the utility model;

[0027] Figure 4 It is a sectional split schematic diagram of the three-dimensional structure of the fixed pile and the connecting rod in the utility model;

[0028] Figure 5 It is a bottom view schematic diagram of the three-dimensional structure of the top plate in the utility model.

[0029] Legend Explanation:

[0030] 1. Foundation; 2. Base; 201. Placing groove; 31. Hydraulic rod; 32. T-shaped seat; 33. Mounting seat; 34. Rotating shaft; 35. Top plate; 4. Jack; 5. Pressing plate; 61. Fixed pile; 62. Holding rod; 63. Connecting rod; 64. Turntable; 65. Screw; 66. Pressing block; 67. Fixed plate; 68. Compression spring; 601. Thread groove. Detailed Implementation Modes

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Referring to Figure 1 , an embodiment provided by the present utility model: a pile foundation bearing capacity testing device, including a foundation 1, the foundation 1 is the surface of frozen soil, a base 2 for supporting the overall device is placed on the upper surface of the foundation 1, a placement groove 201 is opened on the upper surface of the base 2, and multiple groups of placement grooves 201 are opened, evenly distributed on the front side and the rear side of the upper surface of the base 2. Counterweight blocks can be placed in the placement grooves 201 to ensure the stability of the device. A leveling component is arranged on the upper surface of the base 2, and the leveling component can ensure that when pressure is applied to the pile foundation, the pressure direction is perpendicular. A position fixing component is arranged on the upper surface of the base 2, and the position fixing component can prevent the device from sliding and shifting due to the smooth surface of the frozen soil.

[0033] Referring to Figure 2 - Figure 4 , the position fixing component includes a fixing pile 61. All components within the position fixing component are made of metal materials and are hard in texture. A thread groove 601 is opened on the outer wall of the fixing pile 61, and the thread lead angle of the thread groove 601 is less than five degrees, which can produce a self-locking effect. A grip rod 62 is fixedly connected to the top end of the outer wall of the fixing pile 61. The grip rods 62 are distributed on the front and rear sides of the top end of the outer wall of the fixing pile 61 and are relatively long, which can create a relatively large lever and facilitate manual rotation of the fixing pile 61 to drive the fixing pile 61 into the ground. A screw rod 65 is threadedly connected to the inner wall of the fixing pile 61. The thread lead angle of the thread groove on the outer wall of the screw rod 65 is also less than five degrees, which can produce a self-locking effect. A connecting rod 63 is fixedly connected to the upper surface of the screw rod 65. The connecting rod 63 and the screw rod 65 can rotate synchronously. When the screw rod 65 rotates, it can move longitudinally. A turntable 64 is fixedly connected to the upper surface of the connecting rod 63. A round rod is fixed to the outer wall of the turntable 64 for convenient grasping, and the round rod is relatively long, which can create a labor-saving lever and facilitate manual rotation. The position fixing component further includes a pressing block 66. A fixing plate 67 penetrates and is slidably connected to the rear surface of the fixing pile 61. There are two groups of fixing plates 67, and the two groups of fixing plates 67 are symmetrically distributed about the central line of the fixing pile 61. The two groups of fixing plates 67 are elastically connected by a compression spring 68. When the two groups of fixing plates 67 are separated, the compression spring 68 will be stretched to generate a reaction force. The upper surfaces of the two groups of fixing plates 67 are inclined planes. When the pressing block 66 moves downward, it will press the inclined planes of the fixing plates 67, thereby causing the two groups of fixing plates 67 to open.

[0034] Referring to Figure 1 、 Figure 5, the leveling assembly includes a hydraulic rod 31. The hydraulic rod 31 is a prior art and can be implemented by those skilled in the art. Since it is a prior art, it will not be described in detail in this case. The upper surface of the hydraulic rod 31 is fixedly connected with a T-shaped seat 32. A rotating shaft 34 penetrates and is rotatably connected to the left surface of the T-shaped seat 32. The outer wall of the rotating shaft 34 is rotatably connected with a mounting seat 33. The angle between the T-shaped seat 32 and the mounting seat 33 can change. The upper surface of the mounting seat 33 is slidably connected with a top plate 35. The mounting seat 33 slides along the lower surface of the top plate 35, and the sliding distance is very short. A jack 4 is arranged on the lower surface of the top plate 35. The jack 4 is a prior art and can be implemented by those skilled in the art. Since it is a prior art, it will not be described in detail in this case. The lower surface of the jack 4 is fixedly connected with a pressing plate 5. The jack 4 can drive the pressing plate 5 to move longitudinally. The pressing plate 5 can be aligned with the pile foundation. After the jack 4 is started, the pressing plate 5 can press down on the pile foundation to apply pressure to the pile foundation, so as to test the bearing capacity of the pile foundation.

[0035] Refer to Figure 2 - Figure 4 , the bottom end of the fixing pile 61 is set to be conical, which is convenient for piercing into the ground. The fixing pile 61 penetrates and is threadedly connected to the lower surface of the base 2. When the fixing pile 61 rotates, it will move longitudinally. The diameter of the screw rod 65 is larger than the diameter of the connecting rod 63. The screw rod 65 is rotatably connected to the upper surface of the pressing block 66. When the screw rod 65 rotates, it can drive the pressing block 66 to move longitudinally, but will not drive the pressing block 66 to rotate. The connecting rod 63, the turntable 64, the screw rod 65, and the pressing block 66 are concentric. The pressing block 66 is slidably connected to the inner wall of the fixing pile 61.

[0036] Refer to Figure 1 、 Figure 5 , the hydraulic rod 31 is arranged on the upper surface of the base 2. There are two sets of the hydraulic rod 31, the T-shaped seat 32, the mounting seat 33, and the rotating shaft 34. The two sets of the hydraulic rod 31, the T-shaped seat 32, the mounting seat 33, and the rotating shaft 34 are symmetrically distributed front and back with the center line of the top plate 35 as the axis. With the cooperation of the hydraulic rod 31, the T-shaped seat 32, the mounting seat 33, and the rotating shaft 34, the jack 4 can be leveled to make the jack 4 perpendicular to the ground, ensuring that the pressure is perpendicular. The T-shaped seat 32 is set to be T-shaped.

[0037] Working principle: When this device is in use, first place the base 2 at the location to be tested and align the pressure plate 5 with the pile foundation. Then rotate the grip rod 62 to drive the fixed pile 61 to rotate, and further drive the fixed pile 61 to penetrate into the ground. When the fixed pile 61 penetrates into the ground, rotate the turntable 64 to drive the connecting rod 63 and the screw 65 to rotate. The rotating screw 65 will move downward, and the downward-moving screw 65 will drive the pressure block 66 to move downward to squeeze the inclined surface of the fixed plate 67, and then the two groups of fixed plates 67 will be opened. The opened fixed plates 67 will penetrate into the soil to ensure the stability of the fixed pile 61, and will also stretch the compression spring 68 to generate a reaction force. When the fixed plate 67 is fixed in the soil, loosen the turntable 64 to complete the fixation of the device.

[0038] Then start the hydraulic rods 31 on both sides to drive the T-shaped seats 32 on both sides to move longitudinally, which will further drive the rotating shaft 34 to rotate and the mounting seat 33 to slide along the lower surface of the top plate 35, and the angle between the top plate 35 and the ground will also change. When the jack 4 is horizontal, close the two hydraulic rods 31, and then start the jack 4 to drive the pressure plate 5 to move downward. The downward-moving pressure plate 5 will apply pressure to the pile foundation, so as to test the bearing capacity of the pile foundation and judge whether the project is qualified.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. 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 pile foundation bearing capacity testing device, comprising a foundation (1), characterized in that: The upper surface of the foundation (1) is provided with a base (2). A placement groove (201) is formed on the upper surface of the base (2). A leveling component is arranged on the upper surface of the base (2). A position fixing component is arranged on the upper surface of the base (2). The position fixing component includes a fixing pile (61). A threaded groove (601) is formed on the outer wall of the fixing pile (61). A grip rod (62) is fixedly connected to the top end of the outer wall of the fixing pile (61). A screw rod (65) is threadedly connected to the inner wall of the fixing pile (61). A connecting rod (63) is fixedly connected to the upper surface of the screw rod (65). A turntable (64) is fixedly connected to the upper surface of the connecting rod (63).

2. The pile foundation bearing capacity testing device according to claim 1, characterized in that: The position fixing component further includes a pressing block (66). A fixing plate (67) penetrates and is slidably connected to the rear surface of the fixing pile (61). There are two groups of the fixing plates (67). The two groups of the fixing plates (67) are symmetrically distributed front and back with respect to the center line of the fixing pile (61). The two groups of the fixing plates (67) are elastically connected by a compression spring (68).

3. A pile foundation bearing capacity testing device according to claim 1, characterized in that: The leveling component includes a hydraulic rod (31). A T-shaped seat (32) is fixedly connected to the upper surface of the hydraulic rod (31). A rotating shaft (34) penetrates and is rotatably connected to the left surface of the T-shaped seat (32). A mounting seat (33) is rotatably connected to the outer wall of the rotating shaft (34). A top plate (35) is slidably connected to the upper surface of the mounting seat (33). A jack (4) is arranged on the lower surface of the top plate (35). A pressing plate (5) is fixedly connected to the lower surface of the jack (4).

4. The pile foundation bearing capacity testing device according to claim 1, characterized in that: The bottom end of the fixing pile (61) is conical. The fixing pile (61) penetrates and is threadedly connected to the lower surface of the base (2). The diameter of the screw rod (65) is larger than the diameter of the connecting rod (63).

5. The pile foundation bearing capacity testing device according to claim 2, characterized in that: The screw rod (65) is rotatably connected to the upper surface of the pressing block (66). The connecting rod (63), the turntable (64), the screw rod (65), and the pressing block (66) are concentric. The pressing block (66) is slidably connected to the inner wall of the fixing pile (61).

6. The pile foundation bearing capacity testing device according to claim 3, characterized in that: The hydraulic rod (31) is arranged on the upper surface of the base (2).

7. The pile foundation bearing capacity testing device according to claim 3, characterized in that: There are two groups of the hydraulic rod (31), the T-shaped seat (32), the mounting seat (33), and the rotating shaft (34). The two groups of the hydraulic rod (31), the T-shaped seat (32), the mounting seat (33), and the rotating shaft (34) are symmetrically distributed front and back with respect to the center line of the top plate (35).

8. The pile foundation bearing capacity testing device according to claim 3, characterized in that: The T-shaped seat (32) is T-shaped.

Images