System and method for testing uplift bearing capacity of photovoltaic cable-stayed anchor rod in sludge area

Abstract

The invention provides an uplift bearing capacity test system for a photovoltaic cable-stayed anchor rod in a sludge area. The uplift bearing capacity test system comprises a detection module, a roadbed box assembly and a detection frame supported on the roadbed box assembly, the detection frame is provided with a detection surface perpendicular to the anchor rod to be detected, and a hydraulic cylinder is arranged on the detection surface; the roadbed box assembly comprises roadbed boxes which are connected together, an anchor rod passage is formed between every two adjacent roadbed boxes, an anchor rod passing passage is arranged on the detection frame, and an anchor rod to be detected can sequentially penetrate through the anchor rod passages and the anchor rod passing passage and then is stretched and detected by the hydraulic cylinder. The invention further provides a testing method of the photovoltaic cable-stayed anchor rod in the silt area. The roadbed box assembly serves as a supporting body of the detection frame and has the advantages of being large in contact area and good in stability, deformation during testing is reduced through the high strength of the roadbed box, and the problems that a soft foundation is insufficient in counter force, large in deformation, uneven in deformation, unstable and the like are solved.

Description

Technical Field

[0001] The invention relates to a pull-out bearing capacity testing system and a testing method of a photovoltaic inclined anchor rod in a muddy area. Background Art

[0002] In order to expand the utilization of solar energy, photovoltaic flexible support systems have been installed in fish ponds, sewage treatment plants, mountains, farmlands, forest areas and other areas to expand the suitable areas for solar power generation. In the photovoltaic flexible support system, the inclined steel strands provide support reaction force to improve the stability of the photovoltaic flexible support.

[0003] In photovoltaic flexible support technology, the anchoring of the inclined steel strand is one of the important structural design control factors. If the anchoring adopts a common foundation, the construction of the foundation is difficult, the pull-out resistance is not strong, and the soil requirements are high. If the anchoring adopts an enlarged head anchor foundation, it can reduce the cost while ensuring the pull-out resistance of the foundation, and reduce the soil requirements to a certain extent. In addition, since the enlarged head anchor foundation reduces the length of the anchoring section, the construction difficulty is reduced and the applicability is stronger. Since the enlarged head anchor foundation is an inclined structure, it is called an inclined anchor.

[0004] The main failure modes of the cable-stayed anchor are four forms: slippage of the anchor-soil interface, slippage of the anchor-anchor interface, anchor breakage, and shear failure of the soil. Since the bearing capacity of the cable-stayed anchor is mainly controlled by its pull-out resistance, the pull-out resistance is generally evaluated by the load-uplift curve of the pull-out test. At present, the pull-out bearing capacity test device of the cable-stayed anchor is mainly an in-situ test system, which is mainly composed of a reaction structure, a beam, a high-pressure oil pump, a jack, etc.

[0005] Since fish ponds, tidal flats and other areas are mostly deep silt foundations with low strength and large deformation, the reaction force structure of the inclined anchor needs to provide both vertical and horizontal bearing capacity. Since the foundation is weak and thick, the reaction force is often insufficient, and the reaction force structure deforms greatly and unevenly during the test. In addition, during the test, the reaction force structure sinks due to the weak foundation, making the test data unstable. Therefore, it is necessary to develop an inclined anchor test system for photovoltaic flexible brackets located in silt foundation areas such as fish ponds and tidal flats. Summary of the invention

[0006] In order to solve the problem that the reaction force structure is deformed greatly and unevenly during the test due to the weak and thick foundation and insufficient reaction force in the silt area, and the detection data is unstable due to the sinking of the reaction force structure, the present application first proposes a pull-out bearing capacity test system for photovoltaic inclined anchor rods in silt areas, which includes a detection module, a roadbed box assembly, and a detection frame supported on the roadbed box assembly; the detection frame has a detection surface perpendicular to the anchor rod to be detected, and a hydraulic cylinder is arranged on the detection surface;

[0007] The roadbed box assembly comprises at least two roadbed boxes connected together, and an anchor passage is formed between two adjacent roadbed boxes in the roadbed box assembly, and an anchor passage is arranged on the detection frame, and the anchor to be detected can pass through the anchor passage and the anchor passage in sequence and then be stretched and detected by the hydraulic cylinder; the anchor to be detected extends upwardly along a first direction, and a clamping member is arranged on the lower side of the detection frame, and the clamping member is pressed against a side of the roadbed box facing the first direction;

[0008] The detection module includes a pressure gauge for detecting the pressure of the hydraulic cylinder and a deformation detection unit for detecting the deformation degree of the anchor rod.

[0009] In this application, for the convenience of description, the inclined anchor rod is sometimes referred to as the anchor rod. In this application, the hydraulic cylinder preferably adopts a hollow hydraulic jack. In this application, the roadbed box assembly and the test bench are assembled together in a superimposed manner, and there is no non-detachable connection between the two.

[0010] The present application utilizes a roadbed box assembly as a support body for the detection frame, which has the advantages of a large contact area and good stability, and utilizes the high strength of the roadbed box to reduce the deformation of the foundation during the test, thereby solving the problems of insufficient reaction force, large deformation, uneven deformation, and instability of the weak foundation. In the present application, there is no non-detachable connection structure between the detection module, the roadbed box assembly, and the detection frame, which is easy to install and remove, and convenient to construct. The detection module, the roadbed box assembly, and the detection frame can be quickly transferred and recycled, and are easy to install and operate, which can improve the detection efficiency.

[0011] During the test, the pull-out bearing capacity test system in the present application pulls the anchor to be tested through a hydraulic cylinder, thereby applying a pull-out load to the anchor foundation, and the pull-out load is sequentially transmitted to the foundation through the test frame and the roadbed box assembly. During the test, the detection module monitors the pull-out force and pull-out displacement in real time, and a load-pull-out curve can be obtained, thereby effectively judging the pull-out bearing capacity of the anchor foundation.

[0012] Since the detection frame is installed on the roadbed box assembly by clamping, even if the anchor rod has a certain deviation due to construction error, the error can be eliminated by moving the detection frame. When the inclination angle of the anchor rod has an error, the error can be eliminated by setting a gasket between the roadbed box assembly and the clamping frame or by setting a gasket between the hydraulic cylinder and the detection surface.

[0013] Specifically, the detection frame includes two tripods arranged at intervals, each tripod includes a horizontal beam extending along the first axis direction, a load-bearing beam and a support beam welded on the horizontal beam, wherein the load-bearing beam and the support beam are welded together at one end away from the horizontal beam, and the two tripods are connected together via a cross plate; the surface of each load-bearing beam inclined upward becomes a support surface perpendicular to the anchor rod to be detected, the support surfaces of the two load-bearing beams are coplanar, and the support surfaces of the two load-bearing beams together form a detection surface; an anchor rod passage channel is formed between the two tripods; and the clamp is welded to the lower side of the horizontal beam.

[0014] This design can conveniently set up the detection frame on the roadbed box assembly, wherein the clamping parts are used to transmit the horizontal force generated during the detection, and the detection frame is only movably placed on the roadbed box assembly, which can speed up the installation and disassembly speeds, thereby improving the detection speed and efficiency.

[0015] Specifically, for accurate measurement, the deformation detection part includes an instrument bracket inserted in the foundation, a micrometer mounted on the instrument bracket, and a reference plate fixed on the anchor rod to be detected. The reference plate is located between the hydraulic cylinder and the micrometer. The side of the reference plate facing the micrometer forms a reference surface, and the pointer of the micrometer contacts the reference surface of the reference plate.

[0016] Furthermore, in order to reduce detection errors, the reference plane is perpendicular to the extension direction of the anchor rod to be detected.

[0017] Furthermore, in order to improve the detection efficiency, there is no connector between the detection frame and the roadbed box assembly, or the detection frame is detachably mounted on the roadbed box assembly. In specific construction, when the detection frame is detachably mounted on the roadbed box assembly, pins or screws can be freely inserted into the detection frame and the roadbed box, so that the detection frame can be detachably mounted on the roadbed box assembly. When the detection frame needs to be removed from the roadbed box assembly, the detection frame only needs to be lifted upward to complete the removal of the detection frame. Of course, if the screw is inserted from the bottom to the top, it is necessary to screw the nut on the screw to prevent the screw from falling. At this time, when the detection frame needs to be removed, the nut needs to be unscrewed from the screw first.

[0018] Whether there is no connector between the detection frame and the roadbed box assembly or they are connected together in a detachable manner, the detection frame can be quickly removed from the roadbed box assembly and transported to the next detection point. Since the force direction of the anchor rod is in the inclined direction when the inclined anchor rod is tested, the roadbed box assembly is not only subjected to downward pressure, but also the clamping member is subjected to shear force. When the detection frame can be stably maintained on the roadbed box assembly only by the clamping member and the friction between the detection frame and the roadbed box assembly, there is no need to set detachable connectors such as bolts and pins between the detection frame and the roadbed box assembly, that is, there is no connector between the detection frame and the roadbed box assembly. When the detection frame is installed on the roadbed box assembly in a detachable manner, it is to utilize the shear resistance of components such as bolts and pins to make up for the lack of shear resistance of the clamping member.

[0019] Furthermore, in order to avoid the instability of the test data caused by the overall or partial sinking of the foundation during the test, support piles are provided in the foundation, and the roadbed box is supported on the support piles. Since in the actual test process, the stress points of the roadbed box assembly cannot be evenly distributed on each roadbed box, the deformation of the foundation and the partial sinking during the test will cause the roadbed box to sink as a whole or partially, resulting in the attenuation of the tension on the inclined anchor rod during the test, causing the test data to be low, affecting the accuracy of the test. By using support piles to improve the stability of the roadbed box assembly on the foundation, the stability of the roadbed box assembly during the test can be effectively improved, the sinking of the roadbed box assembly can be reduced or even eliminated, and the accuracy of the test data can be improved.

[0020] Specifically, in order to reduce the detection cost, the support piles are wooden piles, and after the detection is completed, the wooden piles are pulled out and recycled.

[0021] Furthermore, for the convenience of detection, 1-4 detection racks are installed on the same roadbed box assembly. The specific number of detection racks can be determined according to specific needs and detection convenience.

[0022] Secondly, the present application also provides a test method for photovoltaic inclined anchor rods in muddy areas, which is carried out using any of the above-mentioned pull-out bearing capacity test systems, and the test method comprises the following steps:

[0023] (1) Arrange the roadbed box assembly in the area of ​​the anchor rod to be inspected that has been completed, so that the anchor rod to be inspected passes upward through the anchor rod passage;

[0024] (2) placing the detection frame on the roadbed box assembly, and pressing the clamping member against the side of the roadbed box facing the first direction; passing the anchor rod to be detected upward through the anchor rod passage and the anchor rod passage in sequence, and then connecting the hydraulic cylinder to the anchor rod to be detected and supporting it on the detection surface, so that the stretching direction of the hydraulic cylinder extends along the axial direction of the anchor rod to be detected; and installing the detection module at the same time;

[0025] (3) Start the hydraulic cylinder to test the pull-out bearing capacity of the anchor rod to be tested, use the detection module to measure the tension of the hydraulic cylinder and the pull-out displacement of the anchor cable to be tested, obtain the load-pull-out amount curve, and obtain the pull-out bearing capacity of the anchor rod to be tested according to the load-pull-out amount curve;

[0026] (4) Remove the hydraulic cylinder, test frame and roadbed box assembly in sequence and move to the next test location.

[0027] In this application, the detection frame is abutted against the roadbed box assembly as a detection platform. There is no non-detachable connection between the roadbed box assembly and the detection frame, which is convenient for disassembly and recycling. The roadbed box assembly has high rigidity, large contact area with the foundation, and high vertical and horizontal bearing capacity, which effectively solves the problems of insufficient reaction force, uneven deformation, and instability of the existing soft foundation. Since the detection frame abuts against the roadbed box assembly, it can be quickly installed and removed, and the construction is convenient. Due to the simple installation and convenient operation, the detection efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0029] Figure 2 It is a top view of the roadbed box assembly.

[0030] Figure 3 yes Figure 2 A view from the middle AA direction, with the inspection frame and support piles removed.

[0031] Figure 4 It is a three-dimensional diagram of the detection frame.

[0032] Figure 5 It is the second structural form of the roadbed box assembly.

[0033] Figure 6 It is the third structural form of the roadbed box assembly. DETAILED DESCRIPTION

[0034] The following first describes the pull-out bearing capacity test system of the inclined-stayed anchor in the silt area. In the following description, the anchor refers to the inclined-stayed anchor. Figure 1-Figure 4In the accompanying drawings, the direction of the first arrow X indicates the direction of the first axis, and the direction of the second arrow Y indicates the direction of the second axis. The first axis direction and the second axis direction both extend in the horizontal direction and are perpendicular to each other; the direction of the third arrow X1 indicates the first direction, which extends along the first axis direction.

[0035] The pull-out bearing capacity test system includes a detection module, a roadbed box assembly 20, and a detection frame 10 supported on the roadbed box assembly 20. In this embodiment, the roadbed box assembly includes two roadbed boxes, the two roadbed boxes are respectively a first roadbed box 201 and a second roadbed box 202, and the two roadbed boxes have the same structure. Each roadbed box includes a frame 210 composed of steel sections and steel plates 24 laid on the upper and lower sides of the frame 210. Figure 2 In the figure, for the sake of clarity, part of the steel plate 24 is removed to expose the frame. Each frame 210 includes a rectangular outer frame 21, and a crossbeam 22 and a longitudinal beam 23 arranged in the outer frame, wherein the crossbeam 22 extends along the first axis direction, and the longitudinal beam 23 extends along the second axis direction. The outer frame is made of channel steel, and the crossbeam and the longitudinal beam are both made of H-steel. In order to stably connect the two roadbed boxes of the same roadbed box assembly 20 together and avoid the position change between the two roadbed boxes during the detection process, which affects the accuracy of the detection, a connector 31 made of H-steel is installed on the side of the roadbed box, and the connectors of the two roadbed boxes are abutted together. The bolts pass through the flanges of the connectors to connect the two connectors together, thereby connecting the two roadbed boxes together to form a roadbed box assembly.

[0036] In order to improve the stability of the roadbed box assembly 20 on the foundation, in this embodiment, wooden piles 60 are set in the foundation, and the wooden piles are used as supporting piles. The roadbed box is supported on the wooden piles, and the wooden piles are used to avoid the roadbed box from tilting due to the foundation being too soft. After the inspection is completed, the wooden piles are pulled out and recycled. The roadbed box is placed directly on the top of the wooden piles, and no connecting parts are required between the roadbed box and the wooden piles. The roadbed box is kept on the wooden piles by friction. It can be understood that in another embodiment, when the roadbed box cannot be stably kept on the wooden piles by relying solely on friction, bolts can also be used to connect the roadbed box to the wooden piles.

[0037] In the same roadbed box assembly 20, two roadbed boxes are spaced apart along the first axis direction, and the gap between the two roadbed boxes forms an anchor passage 25. Figure 2 In the figure, the position of the detection frame 10 on the roadbed box assembly 20 is indicated by a dotted line.

[0038] In this embodiment, only one detection frame 10 is provided on a roadbed box assembly 20. Figure 4Each detection frame 10 includes two tripods 110 arranged at intervals, each tripod 110 includes a horizontal beam 11 arranged along the first axis direction, a load-bearing beam 12 welded on the horizontal beam, and a support beam 13, wherein the load-bearing beam and the support beam are welded together at one end away from the horizontal beam, and the two tripods 110 are connected together via a cross plate 131. The surface of each load-bearing beam 12 inclined upward becomes a support surface 121 perpendicular to the anchor rod 50 to be detected, and the support surfaces 121 of the two load-bearing beams are coplanar, and the support surfaces of the two load-bearing beams jointly form a detection surface, on which the hydraulic cylinder 45 is supported. An anchor rod passage 15 is formed between the two tripods; two clamps 14 extending downward in the vertical direction are welded on the lower side of each horizontal beam, each clamp corresponds to a roadbed box, and the clamp is pressed against the side of the roadbed box facing the first direction.

[0039] The two tripods of the same detection frame are arranged at intervals along the second axis, so that the anchor rod passage 15 extends along the first axis direction. The anchor rod to be detected in this embodiment extends upward along the first direction, so that the anchor rod to be detected can smoothly pass through the anchor rod passage 15. The anchor rod 50 to be detected can be stretched and detected by the hydraulic cylinder after passing through the anchor rod passage and the anchor rod passage in sequence. In this embodiment, the hydraulic cylinder 45 specifically adopts a hollow hydraulic jack.

[0040] In order to improve the stability of the detection frame on the roadbed box assembly, an upper pin hole 111 is provided on the horizontal beam 11 of the detection frame, and a lower pin hole is provided on the roadbed box. In the accompanying drawings, the lower pin hole is not shown, and the pin 112 can freely pass through the upper pin hole and the lower pin hole in sequence from top to bottom. It can be understood that in another embodiment, the screw rod can also be freely inserted into the upper pin hole and the lower pin hole at the same time. Since the detection frame is subjected to pressure in the inclined direction during the detection process, the roadbed box assembly is subjected to the pressure of the detection frame in the vertical direction and the thrust in the horizontal direction, and is not subjected to tension, and does not need pins or screw rods to provide tension, and only needs to bear shear force. Therefore, when the screw rod passes through the upper pin hole and the lower pin hole in sequence from top to bottom, it is not necessary to screw the nut on the screw rod, but when the screw rod passes through the lower pin hole and the upper pin hole in sequence from bottom to top, it is still necessary to screw the nut at the upper end of the screw rod to avoid the screw rod from falling off. That is, there is no connecting piece between the detection frame and the roadbed box assembly, or the detection frame is detachably mounted on the roadbed box assembly.

[0041] The detection module includes a pressure gauge 47 for detecting the pressure of the hydraulic cylinder and a deformation detection unit for detecting the deformation of the anchor rod. In this embodiment, the pressure gauge 47 is installed on the hydraulic pipe 46 of the hydraulic cylinder. The deformation detection unit includes an instrument bracket 41 inserted in the foundation, a micrometer 43 installed on the instrument bracket, and a reference plate 44 fixed on the anchor rod 50 to be detected. The reference plate 44 is located between the hydraulic cylinder 45 and the micrometer 43. The side of the reference plate 44 facing the micrometer forms a reference surface. The pointer of the micrometer contacts the reference surface of the reference plate, and the reference surface is perpendicular to the extension direction of the anchor rod to be detected. In this embodiment, the instrument bracket includes a vertical pole 411 inserted in the foundation and an inclined rod 412 fixed to the vertical pole 411 by a fastener. It can be understood that in another embodiment, the instrument bracket can also use a bent steel pipe or weld the vertical pole and the inclined rod together.

[0042] In this embodiment, the roadbed box assembly includes only two roadbed boxes. It can be understood that in other embodiments, more roadbed boxes can be used to form a roadbed box assembly to adapt to foundations of different hardness. Figure 5 and Figure 6 The second embodiment and the third embodiment of the roadbed box assembly are shown respectively.

[0043] exist Figure 5 In the second embodiment shown, the roadbed box assembly includes four roadbed boxes arranged along the first axis direction, the four roadbed boxes are respectively a first roadbed box 201, a second roadbed box 202, a third roadbed box 203 and a fourth roadbed box 204, the four roadbed boxes are arranged in the order of the third roadbed box 203, the first roadbed box 201, the second roadbed box 202 and the fourth roadbed box 204, two adjacent roadbed boxes are connected together by connecting parts, and an anchor passage is formed between the first roadbed box 201 and the second roadbed box 202, and the detection frame is supported on the first roadbed box 201 and the second roadbed box 202.

[0044] exist Figure 6 In the third embodiment shown, the roadbed box assembly includes two rows of roadbed boxes spaced apart along the first axis direction, wherein one row of roadbed boxes includes a first roadbed box 201 and a third roadbed box 203, and the other row of roadbed boxes includes a second roadbed box 202 and a fourth roadbed box 204, the first roadbed box 201 and the third roadbed box 203 are connected together via a connector to form a first union; the second roadbed box 202 and the fourth roadbed box 204 are connected together via a connector to form a second union, an anchor passage is formed between the first union and the second union, and in this embodiment, two detection frames 10 are arranged on the same roadbed box assembly.

[0045] It can be understood that, according to different construction requirements, one, two, three or four detection frames can be installed on the same roadbed box assembly.

[0046] The following is an explanation of the test method for photovoltaic inclined anchor rods in muddy areas. The test method is carried out using the above-mentioned pull-out bearing capacity test system. The test method specifically includes the following steps:

[0047] (1) Sink the wooden pile 60 in the area of ​​the anchor rod 50 to be inspected, so that the wooden pile is set in the foundation. Then place the roadbed box assembly 20 on top of the wooden pile 60, so that the anchor rod 50 to be inspected passes upward through the anchor rod passage 25.

[0048] (2) Place the detection frame 0 on the roadbed box assembly 20, and make the clamping member 14 press against the side of the roadbed box facing the first direction; make the anchor rod to be detected pass through the anchor rod passage and the anchor rod passage in sequence upward, and then connect the hydraulic cylinder to the anchor rod to be detected and support it on the detection surface, so that the stretching direction of the hydraulic cylinder extends along the axial direction of the anchor rod to be detected; and install the detection module at the same time;

[0049] (3) Start the hydraulic cylinder to test the pull-out bearing capacity of the anchor rod to be tested, use the detection module to measure the tension of the hydraulic cylinder and the pull-out displacement of the anchor cable to be tested, obtain the load-pull-out amount curve, and obtain the pull-out bearing capacity of the anchor rod to be tested according to the load-pull-out amount curve;

[0050] (4) Remove the hydraulic cylinder, test frame and roadbed box assembly in turn, move to the next test location, pull out the steel pile and recycle it.

Claims

1. A pull-out bearing capacity testing system for photovoltaic inclined anchor rods in muddy areas, characterized in that: It includes a detection module, a roadbed box assembly and a detection frame supported on the roadbed box assembly; the detection frame has a detection surface perpendicular to the anchor rod to be detected, and a hydraulic cylinder is arranged on the detection surface; The roadbed box assembly comprises at least two roadbed boxes connected together, and an anchor passage is formed between two adjacent roadbed boxes in the roadbed box assembly, and an anchor passage is arranged on the detection frame, and the anchor to be detected can pass through the anchor passage and the anchor passage in sequence and then be stretched and detected by the hydraulic cylinder; the anchor to be detected extends upwardly along a first direction, and a clamping member is arranged on the lower side of the detection frame, and the clamping member is pressed against a side of the roadbed box facing the first direction; The detection module includes a pressure gauge for detecting the pressure of the hydraulic cylinder and a deformation detection unit for detecting the deformation degree of the anchor rod.

2. The pull-out bearing capacity testing system according to claim 1, characterized in that: The detection frame comprises two tripods arranged at intervals, each tripod comprises a horizontal beam extending along the first axis direction, a load-bearing beam and a support beam welded on the horizontal beam, wherein the load-bearing beam and the support beam are welded together at one end away from the horizontal beam, and the two tripods are connected together via a transverse plate; the surface of each load-bearing beam inclined upwards becomes a support surface perpendicular to the anchor rod to be detected, the support surfaces of the two load-bearing beams are coplanar, and the support surfaces of the two load-bearing beams jointly form a detection surface; a passage for the anchor rod to pass is formed between the two tripods; The clamps are welded to the underside of the horizontal beam.

3. The pull-out bearing capacity testing system according to claim 1, characterized in that: The deformation detection part includes an instrument bracket inserted in the foundation, a micrometer mounted on the instrument bracket and a reference plate fixed on the anchor rod to be detected. The reference plate is located between the hydraulic cylinder and the micrometer. The side of the reference plate facing the micrometer forms a reference surface, and the pointer of the micrometer contacts the reference surface of the reference plate.

4. The pull-out bearing capacity testing system according to claim 3, characterized in that: The reference plane is perpendicular to the extension direction of the anchor rod to be detected.

5. The pull-out bearing capacity testing system according to claim 1, characterized in that: There is no connecting piece between the detection frame and the roadbed box assembly, or the detection frame is detachably mounted on the roadbed box assembly.

6. The pull-out bearing capacity testing system according to claim 1, characterized in that: Support piles are arranged in the foundation, and the roadbed box is supported on the support piles.

7. The pull-out bearing capacity testing system according to claim 6, characterized in that: The supporting piles are wooden piles, which are pulled out and recycled after the inspection is completed.

8. The pull-out bearing capacity testing system according to claim 1, characterized in that: 1 to 4 detection racks are installed on the same roadbed box assembly.

9. A testing method for inclined anchor rods for photovoltaic use in muddy areas, characterized in that: The pull-out bearing capacity test system according to any one of claims 1 to 8 is used for the test, and the test method comprises the following steps: (1) Arrange the roadbed box assembly in the area of ​​the anchor rod to be inspected that has been completed, so that the anchor rod to be inspected passes upward through the anchor rod passage; (2) placing the detection frame on the roadbed box assembly, and pressing the clamping member against the side of the roadbed box facing the first direction; passing the anchor rod to be detected upward through the anchor rod passage and the anchor rod passage in sequence, and then connecting the hydraulic cylinder to the anchor rod to be detected and supporting it on the detection surface, so that the stretching direction of the hydraulic cylinder extends along the axial direction of the anchor rod to be detected; and installing the detection module at the same time; (3) Start the hydraulic cylinder to test the pull-out bearing capacity of the anchor rod to be tested, use the detection module to measure the tension of the hydraulic cylinder and the pull-out displacement of the anchor cable to be tested, obtain the load-pull-out amount curve, and obtain the pull-out bearing capacity of the anchor rod to be tested according to the load-pull-out amount curve; (4) Remove the hydraulic cylinder, test frame and roadbed box assembly in sequence and move to the next test location.

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