A device for pipe pile static load test

Abstract

The utility model discloses a kind of for pipe pile anti-pulling static load testing device, it is related to pipe pile anti-pulling test technical field, the for pipe pile anti-pulling static load testing device includes two main girder buttress, the top of two main girder buttress is fixedly installed with main girder main body, the bottom of two main girder buttress is connected with ground, the inside of ground is installed with pipe pile main body, the top of main girder main body is fixedly installed with jack, the output end of jack is penetrated main girder main body and is connected with force transmission rod, the outside of force transmission rod is slidably installed with connecting plate, the top of pipe pile main body is fixedly installed with mounting plate, the inside of mounting plate is equipped with fastening mechanism. The utility model is through the setting of fastening mechanism, when pulling out pipe pile main body, fastening mechanism is contacted with the inner wall of pipe pile main body, and fastening mechanism is also fixed with the bottom of force transmission rod, so that fastening mechanism shares the tension of bolt, more stable in anti-pulling test, improve the precision of test.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile pull-out test technology, specifically a device for static load pull-out test of pipe piles. Background Technology

[0002] As a precast concrete foundation component, the core function of pipe piles is to transfer building loads to deep, stable soil layers through the friction between the pile body and the soil layer. They are suitable for foundation treatment of various buildings and civil engineering projects. The verification of the pull-out performance of pipe piles is directly related to the anti-buoyancy stability of underground structures. Determining the ultimate bearing capacity through static load tests can prevent the risk of pile foundation failure caused by groundwater buoyancy or seismic action, ensuring the safety and economy of the project.

[0003] The existing method of inserting reinforcing bars and filling the core requires pouring concrete, and the time for water curing concrete is long. Inserting reinforcing bars and filling the core of pipe piles is labor-intensive and cannot reuse materials. During the test, some reinforcing bars may be pulled out, making the test impossible. The flange connection method has a more complex structure and is inconvenient to install, which increases the difficulty of static load test of pipe piles.

[0004] Based on this, a device for static load testing of pipe pile pull-out resistance is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a device for static load testing of pipe pile pull-out, so as to solve the problems of poor stability during pull-out, complex structure, and inconvenient installation in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A device for static load testing of pipe pile pull-out includes two main beam supports, with a main beam body fixedly installed on the top of the two main beam supports, the bottom of the two main beam supports connected to the ground, a pipe pile body installed inside the ground, and a jack fixedly installed on the top of the main beam body. The output end of the jack passes through the main beam body and is connected to a force transmission rod.

[0008] A connecting plate is slidably installed on the outside of the force transmission rod, and an installation plate is fixedly installed on the top of the pipe pile body. A fastening mechanism is provided at the center of the top of the installation plate.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative embodiment: the fastening mechanism includes a slide rod located at the center point of the mounting plate, the bottom end of the slide rod penetrating the mounting plate and fixedly connected to a first limiting plate, the top end of the slide rod being fixedly connected to a lifting plate, and the outside of the lifting plate being provided with a connecting component.

[0011] In one alternative embodiment: the connecting assembly includes a rotating component, which is rotatably mounted on the outside of the lifting plate. A fixing block is fixedly mounted on the bottom inside the mounting plate. A connecting rod is rotatably mounted on the outside of the fixing block. A moving rod is rotatably mounted between the connecting rod and the rotating component. A push plate is fixedly connected to one end of the moving rod. An anti-slip component is provided on one side of the push plate.

[0012] In one alternative: the anti-slip component includes a soft pad that is adhesively attached to one side of the push plate.

[0013] In one alternative: bolts are provided between the connecting plate, the mounting plate and the main body of the pipe pile.

[0014] In one alternative: a second limiting plate is fixedly connected to the outside of the force transmission rod and below the connecting plate.

[0015] In one alternative: four reference beam supports are fixedly installed on the top of the ground, and a reference beam body is fixedly installed on the top of every two reference beam supports.

[0016] In one alternative: a dial indicator is fixedly installed on one side of each of the two reference beam bodies, and the dial indicator is in contact with the connecting plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model adopts a bolt fastening method, which makes the connection and installation simple and disassembly easy, and does not require on-site welding. It can significantly improve the construction speed and shorten the project cycle. Bolts and connecting plates can usually be used multiple times, reducing long-term costs.

[0019] 2. By setting up a fastening mechanism, this utility model ensures that when the main body of the pipe pile is pulled out, the fastening mechanism contacts the inner wall of the main body of the pipe pile, and the fastening mechanism is also fixed to the bottom of the force transmission rod. This allows the fastening mechanism to share the tension of the bolt, making the pull-out test more stable and improving the accuracy of the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the dial indicator installation structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the mounting plate installation structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the fastening mechanism of this utility model.

[0024] Attached Figure Labels and Annotations: 1. Main beam support; 2. Main beam body; 3. Pipe pile body; 4. Jack; 5. Force transmission rod; 6. Connecting plate; 7. Mounting plate; 8. Bolt; 9. Fastening mechanism; 91. Sliding rod; 92. First limiting plate; 93. Lifting plate; 94. Rotating component; 95. Fixing block; 96. Connecting rod; 97. Moving rod; 98. Push plate; 99. Soft pad; 10. Second limiting plate; 11. Reference beam support; 12. Reference beam body; 13. Dial gauge. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In one embodiment, such as Figures 1-4 As shown, a device for static load testing of pipe pile pull-out includes two main beam supports 1, a main beam body 2 is fixedly installed on the top of the two main beam supports 1, the bottom of the two main beam supports 1 is connected to the ground, a pipe pile body 3 is installed inside the ground, a jack 4 is fixedly installed on the top of the main beam body 2, and the output end of the jack 4 passes through the main beam body 2 and is connected to a force transmission rod 5.

[0027] A connecting plate 6 is slidably installed on the outside of the force transmission rod 5, and an installation plate 7 is fixedly installed on the top of the pipe pile body 3. A fastening mechanism 9 is provided at the center of the top of the installation plate 7.

[0028] In this embodiment, the mounting plate 7 and the connecting plate 6 are first fixed to the pipe pile body 3 by bolts 8. The bottom end of the force transmission rod 5 is fixedly installed to the lifting plate 93, and the top of the force transmission rod 5 is connected to the output end of the jack 4. The jack 4 drives the force transmission rod 5 to move upward, effectively pulling the pipe pile body 3 upward, thereby testing the pull-out resistance of the pipe pile. The bolt 8 fastening method makes the connection and installation simple, the disassembly easy, and does not require on-site welding, which can significantly improve the construction speed and shorten the project cycle. The bolts 8 and the connecting plate 6 can usually be used multiple times, reducing long-term costs. With the setting of the fastening mechanism 9, when the pipe pile body 3 is pulled out, the fastening mechanism 9 contacts the inner wall of the pipe pile body 3, and the fastening mechanism 9 is also fixed to the bottom of the force transmission rod 5, so that the fastening mechanism 9 shares the tension of the bolt 8, making it more stable in the pull-out test and improving the accuracy of the test.

[0029] In one embodiment, such as Figure 2 and Figure 4As shown, the fastening mechanism 9 includes a slide rod 91 located at the center point of the mounting plate 7. The bottom end of the slide rod 91 penetrates the mounting plate 7 and is fixedly connected to a first limiting plate 92. The top end of the slide rod 91 is fixedly connected to a lifting plate 93. A connecting assembly is provided on the outside of the lifting plate 93. The connecting assembly includes a rotating component 94, which is rotatably mounted on the outside of the lifting plate 93. A fixing block 95 is fixedly mounted on the bottom inside the mounting plate 7. A connecting rod 96 is rotatably mounted on the outside of the fixing block 95. A moving rod 97 is rotatably mounted between the connecting rod 96 and the rotating component 94. One end of 97 is fixedly connected to a push plate 98. An anti-slip component is provided on one side of the push plate 98. The anti-slip component includes a soft pad 99, which is glued to one side of the push plate 98. The force transmission rod 5 moves upward, causing the lifting plate 93 to move upward. Through the cooperation of the rotating part 94, the connecting rod 96 and the moving rod 97, the push plate 98 moves closer to the inner wall of the pipe pile body 3. The soft pad 99 deforms upon contact with the inner wall of the pipe pile body 3 until the second limiting plate 10 contacts the bottom of the connecting plate 6. The sliding rod 91 improves the stability of the lifting plate 93 moving up and down. The entire fastening mechanism 9 shares the tensile force borne by the bolt 8, thus improving stability.

[0030] In one embodiment, such as Figure 3 As shown, bolts 8 are provided between the connecting plate 6, the mounting plate 7 and the pipe pile body 3. The fastening method of bolts 8 makes the connection and installation simple, the disassembly easy, and the on-site welding is not required, which can significantly improve the construction speed and shorten the project cycle.

[0031] In one embodiment, such as Figure 2 As shown, a second limiting plate 10 is fixedly connected to the outside of the force transmission rod 5 and below the connecting plate 6. After the second limiting plate 10 contacts the connecting plate 6, an upward force is applied to the connecting plate 6, and then the pipe pile body 3 is pulled out through the bolt 8.

[0032] In one embodiment, such as Figure 1 and Figure 2 As shown, four reference beam supports 11 are fixedly installed on the top of the ground. A reference beam body 12 is fixedly installed on the top of every two reference beam supports 11. A dial gauge 13 is fixedly installed on one side of each of the two reference beam bodies 12, and the dial gauge 13 is in contact with the connecting plate 6. The dial gauge 13 records the minute displacement changes of the pipe pile under the action of pull-out load in real time through a high-precision mechanical transmission system to determine whether the pull-out bearing capacity of the pile body meets the standard.

[0033] The above embodiment discloses a device for static pull-out load testing of pipe piles. First, the mounting plate 7 and connecting plate 6 are fixed to the pipe pile body 3 using bolts 8. The bottom end of the force transmission rod 5 is fixedly installed to the lifting plate 93, and the top of the force transmission rod 5 is connected to the output end of the jack 4. The jack 4's operation drives the force transmission rod 5 upward, which in turn drives the lifting plate 93 upward. Through the cooperation of the rotating part 94, connecting rod 96, and moving rod 97, the push plate 98 approaches the inner wall of the pipe pile body 3. The soft pad 99 deforms upon contact with the inner wall of the pipe pile body 3 until the second limiting plate 10 contacts the bottom of the connecting plate 6. The sliding rod 91 improves the stability of the lifting plate 93's vertical movement. The entire fastening mechanism 9 shares the tensile force borne by the bolts 8, making the pull-out test more stable and improving the test accuracy. The dial gauge 13, through a high-precision mechanical transmission system, records the minute displacement changes of the pipe pile under pull-out load in real time, determining whether the pile's pull-out bearing capacity meets the standard.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for static load test of pipe pile pull-out, comprising two main beam supports (1), a main beam body (2) fixedly installed on the top of the two main beam supports (1), the bottom of the two main beam supports (1) connected to the ground, a pipe pile body (3) installed inside the ground, a jack (4) fixedly installed on the top of the main beam body (2), and the output end of the jack (4) penetrating the main beam body (2) and connected to a force transmission rod (5); Its features are, A connecting plate (6) is slidably installed on the outside of the force transmission rod (5), and an installation plate (7) is fixedly installed on the top of the pipe pile body (3). A fastening mechanism (9) is provided at the top center of the installation plate (7).

2. The device for static pull-out load testing of pipe piles according to claim 1, characterized in that, The fastening mechanism (9) includes a slide rod (91), which is located at the center point of the mounting plate (7). The bottom end of the slide rod (91) passes through the mounting plate (7) and is fixedly connected to a first limiting plate (92). The top end of the slide rod (91) is fixedly connected to a lifting plate (93). The lifting plate (93) is provided with a connecting component on its exterior. The bottom end of the force transmission rod (5) is fixedly connected to the lifting plate (93).

3. The device for static pull-out load testing of pipe piles according to claim 2, characterized in that, The connecting assembly includes a rotating component (94), which is rotatably mounted on the outside of the lifting plate (93). A fixing block (95) is fixedly mounted on the bottom inside the mounting plate (7). A connecting rod (96) is rotatably mounted on the outside of the fixing block (95). A moving rod (97) is rotatably mounted between the connecting rod (96) and the rotating component (94). A push plate (98) is fixedly connected to one end of the moving rod (97). An anti-slip component is provided on one side of the push plate (98).

4. The device for static pull-out load testing of pipe piles according to claim 3, characterized in that, The anti-slip component includes a soft pad (99) which is glued to one side of the push plate (98).

5. The device for static pull-out load testing of pipe piles according to claim 1, characterized in that, Bolts (8) are provided between the connecting plate (6), the mounting plate (7) and the main body of the pipe pile (3).

6. The device for static pull-out load testing of pipe piles according to claim 1, characterized in that, A second limiting plate (10) is fixedly connected to the outside of the force transmission rod (5) and below the connecting plate (6).

7. The device for static pull-out load testing of pipe piles according to claim 1, characterized in that, Four reference beam supports (11) are fixedly installed on the top of the ground, and a reference beam body (12) is fixedly installed on the top of every two reference beam supports (11).

8. The device for static pull-out load testing of pipe piles according to claim 7, characterized in that, A dial indicator (13) is fixedly installed on one side of each of the two reference beam bodies (12), and the dial indicator (13) is in contact with the connecting plate (6).

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