Anchor rod performance testing device under stress action and erosion environment

Abstract

The utility model belongs to the technical field of anchor rod bearing performance testing equipment, and discloses an anchor rod performance testing device under stress action and erosion environments. The experiment support system is used for bearing and connecting an anchoring system, a measuring system and a corrosion environment simulation system; the loading system is used for providing loading force for the anchor rod performance test of the anchor rod test piece of the anchoring system under the stress action and the erosion environment; the anchoring system is connected with the measuring system and the corrosion environment simulation system and is used for testing the performance of the anchor rod under the stress action and the corrosion environment; the measuring system is used for measuring data information in anchor rod performance inspection of the anchoring system under the stress action and the erosion environment; and the corrosion environment simulation system is used for providing a corrosion environment for the anchor rod performance test of the anchor rod test piece of the anchoring system under the stress effect and the corrosion environment. The device disclosed by the utility model can be better suitable for carrying out erosion-drawing composite action performance test on the anchor rod in an indoor environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of anchor rod bearing performance test equipment, especially relates to a kind of anchor rod performance testing device under stress action and erosion environment. BACKGROUND

[0002] Anchor rod support is a kind of reinforcing support mode used in surface engineering such as slope, rock-soil deep foundation pit and underground chamber construction such as tunnel and stope. It can be said that anchor rod support is based on maintaining and utilizing the self-supporting capacity of surrounding rock, timely supporting, controlling the deformation and relaxation of surrounding rock, so that surrounding rock becomes a component part of support system. Through the rod body anchored in the surrounding rock, the mechanical state of the surrounding rock is changed, a whole and stable load-bearing ring is formed around the roadway, and the surrounding rock acts together, so as to achieve the purpose of maintaining the roadway.

[0003] The performance evaluation of anchor rod under stress action and erosion environment needs to be cooperated with standard detection equipment and measurement stress acquisition instrument, and the standard load is applied within the range of measurement and the data is checked and analyzed. In engineering practice, anchor system is in high stress state for a long time, and in special working conditions such as water and underground, anchor interface often bears the double effects of continuous stress and high humidity environment, causing multi-mechanism damage such as stress corrosion cracking and electrochemical corrosion. However, there are significant limitations in in-situ detection: first, the complex geological environment makes it difficult to control the corrosion medium; second, the interference factors such as construction machinery vibration and temperature and humidity fluctuation affect the test accuracy; third, the hidden characteristics of anchor system make it difficult to monitor the damage evolution process in real time. Therefore, it is of important engineering value to develop indoor controllable anchor rod multi-field coupling performance detection device to realize accurate reproduction of stress loading and corrosion environment, and to scientifically evaluate the durability and failure mechanism of anchor rod. UTILITY MODEL CONTENTS

[0004] To overcome the problems in the related art, the utility model discloses an embodiment to provide a kind of anchor rod performance testing device under stress action and erosion environment, especially relates to anchor rod pull-out test and anchor rod bearing performance test technology under erosion environment, specifically relates to the case of verifying the performance of anchor rod under erosion environment. The problem that anchor rod performance cannot be tested due to complex construction site environment is solved.

[0005] The technical solution is as follows: a kind of anchor rod performance testing device under stress action and erosion environment, the device includes:

[0006] Experimental support system for bearing and connecting anchoring system, measurement system, corrosion environment simulation system;

[0007] connected with anchoring system, for providing loading force for the anchor rod performance testing of anchor rod specimen of anchoring system under stress action and erosion environment loading system;

[0008] The anchoring system is connected with the measuring system and the corrosion environment simulation system, and is used for testing the anchoring performance of the anchor rod under the stress and the corrosion environment;

[0009] The measuring system is connected with the anchoring system, and is used for measuring the data information of the anchoring system in the anchoring performance test of the anchor rod under the stress and the corrosion environment;

[0010] The corrosion environment simulation system is connected with the anchoring system, and is used for providing the corrosion environment for the anchor rod specimen of the anchoring system in the anchoring performance test of the anchor rod under the stress and the corrosion environment.

[0011] Further, the experimental support system comprises a whole support, and an oil cylinder support and a fixed end support arranged in sequence on the whole support; a three-way pipe is arranged on the lower right side of the whole support to connect the oil pressure pipe I and the oil pressure pipe II of the loading system.

[0012] Further, the oil cylinder support is provided with three groups in the width direction of the whole support, and each group is provided with two oil cylinder supports for clamping the oil cylinder of the loading system, and the oil cylinder is fixed between the two oil cylinder supports.

[0013] The fixed end support is fixed on the whole support and is parallel to the whole support.

[0014] Further, the anchoring system, the measuring system and the corrosion environment simulation system are all three sets.

[0015] Further, the loading system comprises an oil cylinder, a pressure gauge, an oil pump, an oil pressure pipe I and an oil pressure pipe II.

[0016] The oil pump is connected with the three-way pipe fixed on the whole support through the oil pressure pipe I, and is connected with the oil cylinder through the oil pressure pipe II with a valve; and the pressure gauge is arranged on the oil pump.

[0017] Further, the anchoring system comprises a fixed end and a movable end, and an anchor rod specimen.

[0018] The fixed end is fixed on the fixed end support and abuts against the left end surface of the chromium-plated metal corrosion tank body in the corrosion environment simulation system.

[0019] The fixed end support is used for lifting the fixed end, so that the axial center line of the fixed end can be on the same horizontal plane as the axial center line of the movable end, and the axial center lines of the fixed end, the movable end and the anchor rod specimen are flush.

[0020] The anchor rod specimen is sleeved into the fixed end through the movable end and the chromium-plated metal corrosion tank body in the corrosion environment simulation system.

[0021] Further, the measuring system comprises a stress collector, a stress patch, and a plurality of stress patches electrically connected to the stress collector for testing the anchor rod sample.

[0022] The corrosion environment simulation system comprises a chromium-plated metal corrosion tank body, transparent glass observation windows are arranged on both sides of the chromium-plated metal corrosion tank body, and waterproof rubber sheets are arranged at both ends of the chromium-plated metal corrosion tank body.

[0023] In combination with all the above technical solutions, the anchor rod performance testing device under stress and corrosion environment has the advantages of convenient operation, accurate data and the like, and can be better applied to the erosion-pullout combined performance test of the anchor rod in an indoor environment.

[0024] The anchor rod performance testing device under stress and corrosion environment has the advantages of convenient operation, accurate data and the like, and can be better applied to the erosion-pullout combined performance test of the anchor rod in an indoor environment.

[0025] The anchor rod performance testing device under stress and corrosion environment has the advantages of convenient operation, accurate data and the like, and can be better applied to the erosion-pullout combined performance test of the anchor rod in an indoor environment.

[0026] The anchor rod performance testing device under stress and corrosion environment has the advantages of convenient operation, accurate data and the like, and can be better applied to the erosion-pullout combined performance test of the anchor rod in an indoor environment.

[0027] The anchor rod performance testing device under stress and corrosion environment has the advantages of convenient operation, accurate data and the like, and can be better applied to the erosion-pullout combined performance test of the anchor rod in an indoor environment.

[0028] The anchor rod performance testing device under stress and corrosion environment has the advantages of convenient operation, accurate data and the like, and can be better applied to the erosion-pullout combined performance test of the anchor rod in an indoor environment. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure;

[0030] Figure 1 This is a schematic diagram of the anchor bolt performance testing device under stress and corrosion environment provided in this embodiment of the utility model;

[0031] Figure 2 This is a top view of a single structure and workpiece of the anchor bolt performance testing device under stress and corrosion environment provided in this embodiment of the utility model;

[0032] In the diagram: 1. Experimental support system; 2. Loading system; 3. Anchoring system; 4. Measurement system; 5. Corrosion environment simulation system; 6. Anchor bolt specimen; 7. Integral support; 8. Hydraulic cylinder support; 9. Fixed end support; 10. T-junction; 11. Hydraulic cylinder; 12. Pressure gauge; 13. Oil pump; 14. Hydraulic pipe I; 15. Valve; 16. Hydraulic pipe II; 17. Fixed end; 18. Movable end; 19. Stress acquisition instrument; 20. Stress patch; 21. Chrome-plated metal corrosion tank; 22. Transparent glass observation window; 23. Waterproof film. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0034] The innovation of the anchor bolt performance testing device under stress and corrosion environments provided in this embodiment lies in the construction of a simulation system that simulates the synergistic effect of multiple factors. By simulating complex stress states and corrosion environments in the field, a comprehensive evaluation of the mechanical properties and corrosion resistance of the anchor bolts can be achieved. Through the cooperation of the loading system 2, the measurement system 4, and the corrosion environment simulation system 5, the stress magnitude and corrosion conditions can be precisely controlled, enabling real-time monitoring of anchor bolt deformation, stress distribution, and corrosion status. This device has a compact structure and is easy to operate, overcoming the limitations of single-factor testing in traditional testing equipment and providing a new solution for anchor bolt durability assessment under complex environments.

[0035] Example 1, as Figure 1 As shown, the present invention provides an anchor bolt performance testing device under stress and corrosion conditions, comprising:

[0036] Experimental support system 1 for supporting and connecting anchoring system 3, measurement system 4, and corrosion environment simulation system 5;

[0037] Loading system 2 connected with anchoring system 3, used for providing loading force for anchoring system 3 to test anchoring performance of anchoring system 3 under stress and erosion environment;

[0038] Anchoring system 3 carried on experimental support system 1, connected with measuring system 4 and erosion environment simulation system 5, used for testing anchoring performance of anchoring system 3 under stress and erosion environment;

[0039] Measuring system 4 connected with anchoring system 3, used for measuring data information of anchoring system 3 in testing anchoring performance of anchoring system 3 under stress and erosion environment;

[0040] Erosion environment simulation system 5 connected with anchoring system 3, used for providing erosion environment for anchoring system 3 to test anchoring performance of anchoring system 3 under stress and erosion environment.

[0041] The anchoring system 3, measuring system 4 and erosion environment simulation system 5 are all three sets.

[0042] Exemplarily, the experimental support system 1 comprises a whole support 7, and an oil cylinder support 8 and a fixed end support 9 arranged in sequence on the whole support 7.

[0043] The whole support 7 is processed from a steel plate, and four legs welded by angle steels are arranged around the bottom of the whole support 7, and a tee joint 10 is arranged at the right lower side of the whole support 7 to connect oil pressure pipes I 14 and II 16;

[0044] The oil cylinder support 8 is provided with three groups of two oil cylinder supports 8 in the width direction of the whole support 7 to clamp an oil cylinder 11 fixed between the two oil cylinder supports 8;

[0045] The fixed end support 9 is fixed on the whole support 7 and parallel to the whole support 7.

[0046] As shown in Figure 1 , Figure 2 The loading system 2 comprises the oil cylinder 11, a pressure gauge 12, an oil pump 13, oil pressure pipes I 14 and II 16.

[0047] The oil pump 13 is connected with the tee joint 10 fixed on the whole support 7 through the oil pressure pipe I 14, and connected with the oil cylinder 11 through the oil pressure pipe II 16 with a valve 15; and the pressure gauge 12 is arranged on the oil pump 13;

[0048] Exemplarily, the anchoring system 3 comprises a fixed end 17 and a movable end 18, and an anchoring test piece 6.

[0049] The fixed end 17 is fixed on the fixed end support 9 and abuts against the left end surface of the chromium-plated metal corrosion tank 21 in the corrosion environment simulation system 5.

[0050] The fixed end support 9 is used to elevate the fixed end 17, so that the axial center line of the fixed end 17 is on the same horizontal plane as the axial center line of the movable end 18, ensuring that the axial center lines of the fixed end 17, the movable end 18 and the anchor rod test piece 6 are flush. The axial center line of the fixed end 17 is on the same horizontal plane as the axial center line of the movable end 18.

[0051] Exemplarily, the stress collector 19 in the measurement system 4 is electrically connected with the stress patch 20 for testing the anchor rod test piece 6.

[0052] Five stress patches connected with the stress collector 19 are attached to the anchor rod test piece 6.

[0053] Exemplarily, the corrosion environment simulation system 5 adopts the chromium-plated metal corrosion tank 21, transparent glass observation windows 22 are arranged on both sides of the chromium-plated metal corrosion tank 21, and waterproof films 23 are arranged at both ends. The chromium-plated metal corrosion tank 21 abuts against the overall support 7.

[0054] Exemplarily, the oil cylinder 11 is fixed on the oil cylinder support 8 and abuts against the other end of the chromium-plated metal corrosion tank 21 in the corrosion environment simulation system 5; and the movable end 18 abuts against the oil cylinder 11 and does not contact the oil cylinder support 8.

[0055] Further exemplarily, the oil cylinder 11 is arranged between the two fixed end supports 9, and the distance between the two fixed end supports 9 is matched with the cylinder diameter of the oil cylinder 11, thereby forming a clamping structure. The oil cylinder 11 abuts against the right side surface of the chromium-plated metal corrosion tank 21 in the corrosion environment simulation system 5; and the movable end 18 abuts against the oil cylinder 11 and is away from the oil cylinder support 8.

[0056] Further exemplarily, the oil pump 13 provides pressure increase and decrease for the oil cylinder 11, drives the oil cylinder 11 to open the movable end 18, and thus generates a pulling force on the anchor rod test piece 6. The current pressure value can be seen in the process of pressure increase and decrease through the pressure gauge 12, so as to facilitate the next step adjustment.

[0057] Further exemplarily, the oil cylinder support 8 and the fixed end support 9 are processed by two thick steel plates and welded to the overall support 7 when in use because they need to bear a large pressure.

[0058] Before starting the testing work, the following steps are performed: Figure 1The assembly is shown: first, the loading system 2, the anchoring system 3, etc. are installed to the corresponding position, then the anchor rod test piece 6 is sleeved into the fixed end 17 through the movable end 18 and the chromium-plated metal corrosion groove body 21, and the anchoring system 3 is anchored. The oil pump 13 with the pressure gauge 12 is connected with the three-way joint 10 fixed on the overall support 7 through the oil pressure pipe I 14, and then connected with the oil cylinder 11 through the oil pressure pipe II 16 with the valve 15, and the working state of the loading system 2 is checked through the pre-pulling test. The anchor rod test piece 6 is connected with the stress patch 20 electrically connected with the stress collection instrument 19, and the working state of the stress collection instrument 19 and the stress patch 20 is checked.

[0059] When the pulling test is carried out, the oil pump 13 is used to increase and decrease the pressure of the oil cylinder 11 according to the use specification, and the data is read and recorded through the pressure gauge 12 and the stress collection instrument 19. When the corrosion experiment is carried out, the corresponding corrosion liquid is added in the three chromium-plated metal corrosion groove bodies 21 respectively, and the comparison is formed between them.

[0060] In the above embodiments, the description of each embodiment has its own emphasis, and the part not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0061] The above is only a preferable specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make any modification, equivalent replacement and improvement within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A device for testing the performance of an anchor under stress and in an aggressive environment, characterized in that it comprises: The device comprises: an experimental support system (1) for bearing and connecting the anchoring system (3), the measuring system (4) and the corrosion environment simulation system (5); a loading system (2) connected with the anchoring system (3) for providing loading force for the anchoring performance test of the anchor rod specimen (6) of the anchoring system (3) under stress action and erosion environment; the anchoring system (3) borne on the experimental support system (1) and connected with the measuring system (4) and the corrosion environment simulation system (5) for performing the anchoring performance test under stress action and erosion environment; a measuring system (4) connected with the anchoring system (3) for measuring data information of the anchoring performance test of the anchoring system (3) under stress action and erosion environment; a corrosion environment simulation system (5) connected with the anchoring system (3) for providing corrosion environment for the anchoring performance test of the anchor rod specimen (6) of the anchoring system (3) under stress action and erosion environment.

2. The device for testing the performance of the anchor rod under stress and in an erosion environment according to claim 1, characterized in that, The experimental support system (1) comprises a whole support (7), an oil cylinder support (8) and a fixed end support (9) arranged in sequence on the whole support (7); a three-way pipe (10) is arranged on the lower right side of the whole support (7) to connect the oil pressure pipe I (14) and the oil pressure pipe II (16) of the loading system (2).

3. The device for testing the performance of the anchor rod under stress and in an erosion environment according to claim 2, characterized in that, The oil cylinder support (8) is provided with three groups of oil cylinder supports (8) in the width direction of the whole support (7), and each group is provided with two oil cylinder supports (8) for clamping the oil cylinder (11) of the loading system (2), and the oil cylinder (11) is fixed between the two oil cylinder supports (8).

4. The device for testing the performance of the anchor rod under stress and in an erosion environment according to claim 2, characterized in that, The fixed end support (9) is fixed on the whole support (7) and parallel to the whole support (7).

5. The device for testing the performance of the anchor rod under stress and in an erosion environment according to claim 1, characterized in that, The anchoring system (3), the measuring system (4) and the corrosion environment simulation system (5) are all three sets.

6. The device for testing the performance of an anchor under stress and in an aggressive environment according to claim 1, characterized in that, The loading system (2) comprises an oil cylinder (11), a pressure gauge (12), an oil pump (13), an oil pressure pipe I (14) and an oil pressure pipe II (16); The oil pump (13) is connected with the three-way pipe (10) fixed on the whole support (7) through the oil pressure pipe I (14) and connected with the oil cylinder (11) through the oil pressure pipe II (16) with a valve (15); the pressure gauge (12) is arranged on the oil pump (13).

7. The device for testing the performance of the anchor rod under stress and in an erosion environment according to claim 2, characterized in that, The anchoring system (3) comprises a fixed end (17) and a movable end (18), and an anchor rod specimen (6); The fixed end (17) is fixed on the fixed end support (9) and abuts against the left end surface of the chromium-plated metal corrosion tank body (21) in the corrosion environment simulation system (5); The fixed end support (9) is used for lifting the fixed end (17) so that the axial center line of the fixed end (17) can be on the same horizontal plane as the axial center line of the movable end (18), and the axial center lines of the fixed end (17), the movable end (18) and the anchor rod specimen (6) are flush; The anchor rod specimen (6) passes through the movable end (18) and the chromium-plated metal corrosion tank body (21) in the corrosion environment simulation system (5) and is sleeved into the fixed end (17).

8. The device for testing the performance of an anchor under stress and in an aggressive environment according to claim 1, characterized in that, The measurement system (4) comprises a stress collector (19) and stress patches (20) electrically connected with the stress patches (20) for testing the anchor rod sample (6).

9. The device for testing the performance of an anchor under stress and in an aggressive environment according to claim 1, characterized in that, The corrosion environment simulation system (5) comprises a chromium-plated metal corrosion tank body (21), transparent glass observation windows (22) are arranged on both sides of the chromium-plated metal corrosion tank body (21), and waterproof films (23) are arranged at both ends; the chromium-plated metal corrosion tank body (21) is in abutment with the overall support (7).

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