Anti-pulling auxiliary test device for foundation pile

Abstract

The utility model discloses an anti-pulling auxiliary test device for a foundation pile. The anti-pulling auxiliary test device comprises a main body structure; the main body structure comprises a first base and a second base which are separately arranged; a testing mechanism; the testing mechanism comprises a lifting plate and jacks, the lifting plate is used for lifting the foundation pile to carry out a drawing test, the number of the jacks is two, the two jacks are fixedly installed on the surface of the first base and the surface of the second base respectively and used for lifting the lifting plate, and a hook is arranged in the center of the bottom of the lifting plate. Carrying out an anti-pulling test by combining the hook with the steel wire rope binding foundation pile; a guide assembly is further included. The device is simple in structure and convenient to use, through the split type design, the distance between the first base and the second base can be adjusted according to the diameter of a foundation pile when the foundation pile is subjected to an anti-pulling test, the foundation piles of different specifications can be subjected to the anti-pulling test, the application range of the device is greatly widened, and the device has high practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of pile pull-out test equipment, in particular to a pile pull-out auxiliary test device. Background Art

[0002] Piles are a form of deep foundation, mainly used to support the weight of the superstructure and transfer the load to the deep foundation. It is one or more long cylindrical structures that go deep into the ground to a certain depth. They are usually made of concrete or steel, with a large diameter and a long length. They can penetrate soft soil layers and reach hard strata, such as rocks or other hard soils, to provide stable support. The main function of the piles is to disperse the load of the superstructure and transfer it evenly to deeper and more solid strata to ensure the safety and stability of the entire building. During the building design and construction process, the location, quantity, size and material of the piles need to be carefully calculated and designed to ensure that they can withstand the expected load.

[0003] After searching, the Chinese patent application number is: CN202010562125.9, which relates to a pile foundation pit pull-out test system, including foundation piles embedded on both sides of the pile foundation to be tested, two groups of the foundation piles and the pile foundation to be tested are in the same straight line, and a test cylinder is fixedly connected to the foundation piles, and a test plate is installed on the telescopic ends of the two groups of test cylinders, and the telescopic ends of the test cylinders are spherically connected to the lower surface of the test plate, and several groups of test rods are installed on the lower surface of the test plate, and a connecting mechanism is provided between one end of the test rod and the embedded steel bars on the upper surface of the pile foundation, and an adjustment mechanism is provided between one end of the test rod and the test plate to facilitate ensuring that the test rod is always vertically downward, and the test rod and one end of the embedded steel bars are connected by the connecting mechanism, and the test plate is driven to move upward by the test cylinder, and the test plate drives the test rod to move upward, and under the action of the adjustment mechanism, the test rod is always vertically downward, thereby improving the accuracy of the pull-out test of the pile foundation.

[0004] In the above technical solution, the test assembly is an integrated structure and can only perform pull-out tests on piles with fixed diameters. The application scope of the equipment is relatively narrow, so we need to propose an auxiliary pull-out test device for piles. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary pull-out test device for pile foundations. The device has a simple structure and is easy to use. Through a split design, the distance between the first base and the second base can be adjusted according to the diameter of the pile foundation when performing a pull-out test on the pile foundation. The pull-out test can be performed on pile foundations of different specifications, which greatly improves the scope of application of the equipment and has high practicality, so as to solve the problems raised in the above-mentioned background technology.

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

[0007] A device for auxiliary pull-out test of pile foundation, comprising: a main structure; the main structure comprises a first base and a second base which are separately arranged; a test mechanism; the test mechanism comprises a lifting plate and a jack for lifting the pile foundation for pull-out test, the jack is provided with two groups, the two groups of jacks are respectively fixedly mounted on the first base surface and the second base surface for lifting the lifting plate, a hook is provided at the bottom center of the lifting plate, and the pile foundation is bound by the hook in cooperation with a steel wire rope for pull-out test;

[0008] A guide assembly is also included.

[0009] Preferably, the upper end of the top rod of the jack is fixedly connected to a top plate, the top plate is arranged in a concave shape, and the inner concave surface of the top plate is matched with the lifting plate.

[0010] Preferably, the guide assembly includes two groups of sleeves and two groups of guide rods, the two groups of sleeves are respectively arranged on the first base and the second base, and the two groups of guide rods are respectively slidably inserted into the interior of the two groups of sleeves.

[0011] Preferably, a sliding block is provided at the upper end of the guide rod, and two groups of sliding grooves connected to the outside of the lifting plate are symmetrically opened in the lifting plate, and the sliding block is slidably installed inside the sliding groove.

[0012] Preferably, the bottoms of the two groups of slide grooves are provided with notches connected to the outside of the lifting plate, and the notches are used for the guide rods to slide.

[0013] Preferably, it further comprises a positioning assembly, the positioning assembly comprises a threaded rod and a convex plate, the threaded rod is threadedly mounted on the convex plate.

[0014] Preferably, four groups of the convex plates are symmetrically welded on the first base and the second base, the lower end of the threaded rod is conical, and a handle is welded on the upper end of the threaded rod.

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

[0016] The utility model sets a first base and a second base, and sets a testing mechanism including a lifting plate and a jack. The jack is respectively installed on the first base and the second base. A hook is set at the bottom of the lifting plate to cooperate with the wire rope to fix the foundation pile. The jack is used to lift the lifting plate to test the foundation pile. The device has a simple structure and is easy to use. Through the split design, the distance between the first base and the second base can be adjusted according to the diameter of the foundation pile during the pull-out test on the foundation pile, and the pull-out test can be performed on the foundation piles of different specifications, which greatly improves the application range of the equipment and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the lifting plate of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the sleeve of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the guide rod of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the positioning component of the utility model.

[0022] In the figure: 1. first base; 2. second base; 3. lifting plate; 4. guide rod; 5. hook; 6. sleeve; 7. jack; 8. top plate; 9. pressure sensor; 10. slider; 11. slide groove; 12. notch; 13. convex plate; 14. threaded rod; 15. handle. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-3 , the utility model provides a technical solution:

[0025] A device for auxiliary pull-out test of pile foundation, comprising: a main structure; the main structure comprises a first base 1 and a second base 2 which are separately arranged; a test mechanism; the test mechanism comprises a lifting plate 3 and a jack 7 for lifting the pile foundation for pull-out test, two groups of jacks 7 are provided, the two groups of jacks 7 are respectively fixedly mounted on the surface of the first base 1 and the surface of the second base 2 for lifting the lifting plate 3, a hook 5 is provided at the bottom center of the lifting plate 3, and the pile foundation is bound by the hook 5 in cooperation with a steel wire rope for pull-out test;

[0026] By setting the first base 1 and the second base 2, a testing mechanism including a lifting plate 3 and a jack 7 is set, and the jack 7 is respectively installed on the first base 1 and the second base 2. A hook 5 is set at the bottom of the lifting plate 3 to cooperate with the steel wire rope to fix the foundation pile, and at this time the foundation pile is located directly below the hook 5, and the distances from the first base 1 and the second base 2 to the foundation pile are equal. The jack 7 is used to lift the lifting plate 3 to test the foundation pile. In actual use, the positions of the first base 1 and the second base 2 are adjusted accordingly according to the diameter of the foundation pile to be tested. After adjustment, the upper end of the foundation pile is fixed by the hook 5 and the steel wire rope, and the jack 7 is started to perform a pull-out test on the foundation pile;

[0027] Among them, a pressure sensor 9 can be installed on the top plate 8 to obtain the current pulling force. The total pressure minus the weight of the lifting plate 3, the guide rod 4, the slider 10 and the wire rope is the force applied to the foundation pile.

[0028] In general, the device has a simple structure and is easy to use. Through the split design, the distance between the first base 1 and the second base 2 can be adjusted according to the diameter of the pile during the pull-out test, and piles of different specifications can be tested for pull-out, which greatly improves the scope of application of the equipment and has high practicality.

[0029] See also Figure 1 and 3 In order to prevent the lifting plate 3 from shaking or deflecting during the lifting process, the present application makes the following design:

[0030] The upper end of the top rod of the jack 7 is fixedly connected with a top plate 8 , which is arranged in a concave shape, and the inner concave surface of the top plate 8 is matched with the lifting plate 3 .

[0031] By providing a concave top plate 8 on the top rod of the jack 7, when the jack 7 lifts the lifting plate 3, the lifting plate 3 is just stuck in the top plate 8, which can effectively prevent the lifting plate 3 from shaking during the lifting process, thereby improving the stability and safety of the equipment.

[0032] See also Figure 2-4 In order to ensure the accuracy of the test and the stability of the equipment, this device is designed as follows:

[0033] The guide assembly also includes two sets of sleeves 6 and two sets of guide rods 4. The two sets of sleeves 6 are respectively arranged on the first base 1 and the second base 2. The two sets of guide rods 4 are respectively slidably inserted into the two sets of sleeves 6. A slider 10 is arranged at the upper end of the guide rod 4. Two sets of slide grooves 11 connected to the outside of the lifting plate 3 are symmetrically opened in the lifting plate 3. The slider 10 is slidably installed in the inside of the slide groove 11. The bottoms of the two sets of slide grooves 11 are both opened with notches 12 connected to the outside of the lifting plate 3. The notches 12 are for the guide rods 4 to slide.

[0034] By arranging a sleeve 6 on the first base 1 and the second base 2, the guide rod 4 is slidably inserted in the sleeve 6, a slider 10 is arranged on the top of the guide rod 4, the slider 10 is slidably installed in the groove in the lifting plate 3, and a notch 12 for the guide rod 4 to move is provided at the bottom of the groove. When the jack 7 lifts the lifting plate 3, the guide rod 4 and the sleeve 6 cooperate to enable the lifting plate 3 to be lifted vertically, which plays a good guiding role and improves the stability and accuracy during the pile foundation test;

[0035] Moreover, the slider 10 at the upper end of the guide rod 4 cooperates with the slide groove 11 and the notch 12 on the lifting plate 3, so that corresponding activities can be performed when the distance between the first base 1 and the second base 2 is adjusted, which is convenient to use.

[0036] See also Figure 1 , 3 In order to avoid the first base 1 and the second base 2 from easily shifting during the test due to the soft foundation, the present application makes the following design:

[0037] The positioning assembly also includes a threaded rod 14 and a convex plate 13, and the threaded rod 14 is threadedly mounted on the convex plate 13. Four groups of convex plates 13 are symmetrically welded on the first base 1 and the second base 2. The lower end of the threaded rod 14 is conical, and the upper end of the threaded rod 14 is welded with a handle 15.

[0038] In actual use, after the positions of the first base 1 and the second base 2 are determined, the handle 15 is rotated to insert the tapered end of the threaded rod 14 into the ground, which can play a good positioning role and avoid the first base 1 and the second base 2 from being easily displaced due to force or soft foundation during the test, thereby further improving the practicality of the equipment.

[0039] Also, see Figure 1-5 The split design adopted in this application includes a first base 1, a second base 2, a guide rod 4 with a slider 10, and a lifting plate 3. These components can be separated and quickly combined, which is convenient for assembling and using the equipment. When the equipment is not in use, it can be disassembled, occupying less space and being easier to store. At the same time, the separated components are also easier to transport.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pile pull-out auxiliary test device, characterized in that: include: A main body structure, the main body structure comprising a first base (1) and a second base (2) which are separately arranged; A testing mechanism, the testing mechanism comprising a lifting plate (3) and a jack (7) for lifting a foundation pile for a pull-out test, wherein two groups of jacks (7) are provided, and the two groups of jacks (7) are respectively fixedly mounted on the surface of a first base (1) and the surface of a second base (2) for lifting the lifting plate (3), and a hook (5) is provided at the bottom center of the lifting plate (3), and the foundation pile is bound by the hook (5) in cooperation with a steel wire rope to perform a pull-out test; A guide assembly is also included.

2. The auxiliary test device for pile pull-out resistance according to claim 1, characterized in that: The upper end of the top rod of the jack (7) is fixedly connected to a top plate (8), the top plate (8) is arranged in a concave shape, and the inner concave surface of the top plate (8) is matched with the lifting plate (3).

3. The auxiliary test device for pile pull-out resistance according to claim 1 is characterized in that: The guide assembly comprises two groups of sleeves (6) and two groups of guide rods (4); the two groups of sleeves (6) are respectively arranged on the first base (1) and the second base (2); and the two groups of guide rods (4) are respectively slidably inserted into the interior of the two groups of sleeves (6).

4. The auxiliary test device for pile pull-out resistance according to claim 3 is characterized in that: A slider (10) is provided at the upper end of the guide rod (4), and two groups of slide grooves (11) connected to the outside of the lifting plate (3) are symmetrically opened in the lifting plate (3), and the slider (10) is slidably installed inside the slide grooves (11).

5. The auxiliary test device for pile pull-out resistance according to claim 4 is characterized in that: The bottoms of the two groups of slide grooves (11) are both provided with notches (12) connected to the outside of the lifting plate (3), and the notches (12) are used for the guide rods (4) to slide.

6. The auxiliary test device for pile pull-out resistance according to claim 1, characterized in that: It also comprises a positioning assembly, which comprises a threaded rod (14) and a convex plate (13), wherein the threaded rod (14) is threadedly mounted on the convex plate (13).

7. The auxiliary test device for pile pull-out resistance according to claim 6, characterized in that: Four groups of the convex plates (13) are symmetrically welded on the first base (1) and the second base (2).

8. The auxiliary test device for pile pull-out resistance according to claim 7, characterized in that: The lower end of the threaded rod (14) is arranged in a conical shape, and a handle (15) is welded to the upper end of the threaded rod (14).

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