A device for testing the pull-out performance of a concrete segment

Abstract

This utility model discloses a test device for the pull-out performance of concrete pipe segments, relating to the field of concrete pipe segment testing technology. The test device includes a base and a test groove installed on the upper end of the base. The test groove is open on both sides and the upper end. Side frames are symmetrically arranged on both sides of the test groove, and the side frames are hinged to open and close on both sides of the test groove. The surface of the base is provided with a sliding groove, and a slider is provided inside the sliding groove. Two sets of sliders are provided and slidably engaged on both sides of the sliding groove. After the measurement is completed, the motor drives the bidirectional screw to rotate and move the connecting rod outward to unfold the side frames on both sides of the test groove. Since the inner sides of the test groove and the side frames are coated with a high-efficiency release agent, the hardened grout does not easily stick to the surface of the test groove and the side frames, and opening the side frames is relatively easy. After opening the side frames, the hardened grout can be taken out and tested.

Description

Technical Field

[0001] This utility model relates to the field of concrete segment testing technology, specifically a test device for the pull-out performance of concrete segments. Background Technology

[0002] The concrete segment performance testing device is a specialized equipment system used to test the pull-out resistance between the concrete segments of tunnel lining and the surrounding soil or grout. Its core purpose is to simulate the forces that the segments are actually subjected to in the tunnel, which may cause them to be pulled upward or displaced, such as groundwater buoyancy, unloading from above, and stratum deformation, and to measure their ability to resist such pull-out forces.

[0003] The existing testing equipment involves pouring simulated grout from the construction site into a test mold and inserting concrete segments into the grout. After solidification, a pull-out test can be conducted. However, since the solidified grout hardens, it is not easy to remove the hardened grout from the mold. If the grout cannot be smoothly removed from the mold, it will be difficult to observe effective test data and to conduct subsequent pull-out tests in a timely manner. Utility Model Content

[0004] The purpose of this invention is to provide a test device for the pull-out performance of concrete segments, so as to solve the problem mentioned in the background art that the grout will harden after solidification, making it inconvenient to remove the hardened grout from the mold.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for the pull-out performance of concrete segments, including a base;

[0006] Also includes:

[0007] The test chamber is mounted on the upper part of the base. The test chamber is open on both sides and the upper part. Side frames are symmetrically arranged on both sides of the test chamber, and the side frames are hinged to open and close on both sides of the test chamber. The surface of the base is provided with a sliding groove, and a slider is provided inside the sliding groove. Two sets of sliders are provided and slidably engaged on both sides of the sliding groove. A second connecting seat is provided at the upper end of the slider, and a first connecting seat is provided on the outer side of the side frame. The first connecting seat and the second connecting seat are connected by a connecting rod. One end of the connecting rod is provided with a connecting shaft, and the connecting shaft is hinged to the first connecting seat. The other end of the connecting rod is provided with a rotating seat, and the rotating seat is hinged to the second connecting seat.

[0008] Preferably, a bidirectional screw is installed inside the slide groove, and two sets of sliders are threadedly connected to both ends of the bidirectional screw through threaded holes on the surface. One end of the bidirectional screw is connected to a motor, and the motor is located on the outside of the base.

[0009] Preferably, the upper end of the base is provided with a support frame, and the test groove is located on the inner side and below the support frame.

[0010] Preferably, a jack is installed on the top of the support frame, a first connecting rod is provided at the upper inside of the support frame and is connected to the jack, and a hook is provided at the bottom of the first connecting rod.

[0011] Preferably, an electric push rod is provided on one side of the upper end of the support frame, a second connecting rod is provided at the upper inside of the support frame and the second connecting rod is connected to the electric push rod, and a vibrating rod is provided at the bottom of the second connecting rod.

[0012] Preferably, the inner walls of the support frame and the side frame are coated with a high-efficiency release agent.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) By installing a test tank at the top of the base, a simulated grouting body based on the construction site environment is injected into the test tank. Then, concrete pipe segments are inserted into the grouting body and wait for solidification and hardening. Then, the pre-embedded hoisting holes on the pipe segments are connected to the hooks. The pipe segments are pulled upward by jacks. The pull-out test is performed by force sensors and displacement sensors. After the measurement is completed, the bidirectional screw is driven by the motor to rotate and drive the connecting rod to move outward, thus unfolding the side frames on both sides of the test tank. Since the inner sides of the test tank and the side frames are coated with a high-efficiency release agent, the hardened grouting body is not easy to stick to the surface of the test tank and the side frames. It is also relatively easy to open the side frames. After opening the side frames, the hardened grouting body can be taken out and tested.

[0015] (2) By setting a vibrating rod at the upper end of the support frame, after the grout is poured into the test tank, the vibrating rod can be driven by an electric push rod to descend into the test tank, so that the vibrating rod can vibrate the grout in the test tank, so that the internal air bubbles can be discharged, thereby improving the accuracy of the test. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0019] Figure 4 This is an enlarged view of the structure at point A of this utility model;

[0020] In the diagram: 1. Support frame; 2. Base; 3. Slide groove; 4. Jack; 5. Electric push rod; 6. First connecting rod; 7. Hook; 8. Second connecting rod; 9. Vibrator; 10. Test chamber; 11. Side frame; 12. First connecting seat; 13. Connecting rod; 14. Connecting shaft; 15. Slider; 16. Motor; 17. Bidirectional screw; 18. Rotating seat; 19. Second connecting seat. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] This invention provides a testing device for the pull-out performance of concrete segments. The device comprises [missing information]. The main problem this invention solves is that the hardened grout after solidification makes it difficult to remove from the mold.

[0023] For the device provided by this utility model, please refer to Figure 1-4 The following is a detailed introduction.

[0024] The test chamber 10 is mounted on the upper part of the base 2. The test chamber 10 is open on both sides and at the top. Side frames 11 are symmetrically arranged on both sides of the test chamber 10, and the side frames 11 open and close on both sides of the test chamber 10 via hinges. A sliding groove 3 is provided on the surface of the base 2. A slider 15 is provided inside the sliding groove 3, and two sets of sliders 15 are slidably engaged on both sides inside the sliding groove 3. A second connecting seat 19 is provided at the upper end of the slider 15. A first connecting seat 12 is provided on the outer side of the side frame 11. The first connecting seat 12 and the second connecting seat 19 are connected by a connecting rod 13. One end of the connecting rod 13 is provided with a connecting... Shaft 14 is hinged to the first connecting seat 12. The other end of the connecting rod 13 is provided with a rotating seat 18, which is hinged to the second connecting seat 19. The inner walls of the support frame 1 and the side frame 11 are coated with a high-efficiency release agent. The high-efficiency release agent, such as heavy oil-based or high-molecular polymer, can greatly reduce the adhesion force, so that the hardened grout is not easy to stick to the test tank. The inside of the slide 3 is equipped with a bidirectional screw 17, and two sets of sliders 15 are threaded to the two ends of the bidirectional screw 17 through the threaded holes on the surface. One end of the bidirectional screw 17 is connected to a motor 16, and the motor 16 is located on the outside of the base 2.

[0025] Please see Figure 2To further explain, a support frame 1 is provided at the upper end of the base 2, and the test groove 10 is located at the lower inner side of the support frame 1. A jack 4 is installed above the support frame 1. A first connecting rod 6 is provided at the upper inner end of the support frame 1, and the first connecting rod 6 is connected to the jack 4. A hook 7 is provided at the bottom of the first connecting rod 6.

[0026] Please see Figure 2 To further explain, an electric push rod 5 is provided on one side of the upper end of the support frame 1, and a second connecting rod 8 is provided at the upper inside of the support frame 1. The second connecting rod 8 is connected to the electric push rod 5, and a vibrating rod 9 is provided at the bottom of the second connecting rod 8.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A test device for the pull-out performance of concrete segments, comprising a base (2); Its features are: Also includes: The test tank (10) is installed on the upper end of the base (2). The test tank (10) is open on both sides and the upper end. Side frames (11) are symmetrically arranged on both sides of the test tank (10), and the side frames (11) are hinged to open and close on both sides of the test tank (10). The surface of the base (2) is provided with a sliding groove (3). The sliding groove (3) is provided with a slider (15). The slider (15) is provided in two sets and is slidably engaged on both sides of the sliding groove (3). The upper end of the side frame (11) is provided with a second connecting seat (19), and the outer side of the side frame (11) is provided with a first connecting seat (12). The first connecting seat (12) and the second connecting seat (19) are connected by a connecting rod (13). One end of the connecting rod (13) is provided with a connecting shaft (14), and the connecting shaft (14) is hinged to the first connecting seat (12). The other end of the connecting rod (13) is provided with a rotating seat (18), and the rotating seat (18) is hinged to the second connecting seat (19).

2. The concrete segment pull-out performance testing device according to claim 1, characterized in that: The slide groove (3) is equipped with a bidirectional screw (17), and two sets of sliders (15) are threadedly connected to the two ends of the bidirectional screw (17) through threaded holes on the surface. One end of the bidirectional screw (17) is connected to a motor (16), and the motor (16) is located on the outside of the base (2).

3. The concrete segment pull-out performance testing device according to claim 1, characterized in that: The upper end of the base (2) is provided with a support frame (1), and the test groove (10) is located on the inner side of the support frame (1).

4. The concrete segment pull-out performance testing device according to claim 3, characterized in that: A jack (4) is installed on the top of the support frame (1). A first connecting rod (6) is provided at the upper inside of the support frame (1), and the first connecting rod (6) is connected to the jack (4). A hook (7) is provided at the bottom of the first connecting rod (6).

5. The concrete segment pull-out performance testing device according to claim 3, characterized in that: An electric push rod (5) is provided on one side of the upper end of the support frame (1). A second connecting rod (8) is provided at the upper inside of the support frame (1), and the second connecting rod (8) is connected to the electric push rod (5). A vibrating rod (9) is provided at the bottom of the second connecting rod (8).

6. The concrete segment pull-out performance testing device according to claim 3, characterized in that: The inner walls of the support frame (1) and the side frame (11) are coated with a high-efficiency release agent.

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