Device for testing mechanical properties of anchor rod / cable under tension-shear load and method of using the same

Abstract

The application discloses a tension-shear load anchor rod / cable mechanical property testing device and a use method thereof, and belongs to the technical field of mine and rock-soil engineering test and testing. The device comprises a metal fixing table, a shearing module and a pulling module which are connected through a separate oil pump pipeline. The anchor rod / cable is fixed by the metal fixing table and the pulling module, the separate oil pump is driven to work, the pulling module applies static and dynamic tension to the anchor rod / cable, and a hydraulic jack is used to carry out single or repeated cycle high-low speed shearing test on the anchor rod / cable until the anchor rod / cable is damaged. A multifunctional console is used to monitor the stress state of the anchor rod / cable. The device can control the static and dynamic tension applied to the anchor rod / cable, simulate the shearing influence of jointed rock on the anchor rod / cable in a static and dynamic tension state, test the shearing resistance of the anchor rod / cable, and has the advantages of intelligent operation, strong functionality, high precision and good economic benefits.

Description

Technical Field

[0001] This invention relates to a testing device for the mechanical properties of anchor bolts / cables under tension-shear loads and its usage method, belonging to the field of testing technology in mining and geotechnical engineering. Background Technology

[0002] Anchor bolt / cable support technology is widely used in underground engineering support fields such as roadways, tunnels, and chambers, as well as in geotechnical engineering fields such as foundation pits and slopes, demonstrating significant engineering benefits. The rock-anchor interface in underground engineering projects such as roadways, tunnels, and chambers exhibits two types of shear stress: deformation shear stress caused by rock deformation and pull-out shear stress generated by the pull-out effect of deformation shear stress. Scholars have theoretically derived the shear stress at the anchor bolt / cable interface caused solely by surrounding rock deformation, using tunnel surrounding rock displacement as a parameter. However, the anchor bolt / cable installation angle and the magnitude of static and dynamic tension also significantly influence the joint surface strength and tangential stiffness. When the anchor bolt / cable reaches yield under static and dynamic tension, although its axial action is greatly enhanced, its tangential action decreases accordingly. Therefore, studying the contribution of anchor bolts / cables to the joint shear resistance under static and dynamic tension, and determining the mechanism and mode of their shear performance, is of great significance and is key to the continued development of static and dynamic tension anchor bolt / cable support technology.

[0003] Currently, research on the distribution of shear stress in anchor bolts / cables mainly relies on fitting methods or theoretical solutions based on certain assumptions, based on experiments and field tests. Specifically, CN114942191A uses axial tension to induce static tension in anchor bolts / cables; CN1073000465B utilizes a rolling cone to drive a rotating shaft to provide torque to the nut; CN110208113A sets different shear stress levels to achieve correlation analysis between shear stress and shear strain; and CN115931551A studies the stiffness and shear strength of the anchorage interface and its damage evolution under different anchor bolt / cable, lithology, and anchoring agent conditions. In summary, existing anchor / cable mechanical property testing devices and methods have not yet conducted relevant performance tests on the shear effect of jointed rock on anchors / cables under tension. The test results have significant errors and inconsistencies compared to the actual shear resistance of anchors / cables, resulting in unreliable anchor / cable mechanical property testing or monitoring results that cannot guide the design of anchor / cable support parameters in geotechnical and underground engineering. These results also do not match the actual tensile-shear stress state of anchors / cables, which can easily lead to over-designed anchor / cable strength or unreasonable design, inducing engineering disasters such as roof falls and collapses. Summary of the Invention

[0004] Technical Problem: To address the shortcomings of existing technologies, this paper provides a testing device for the mechanical properties of anchor rods / cables under tension-shear loads and its usage method. The device simulates the shear resistance of anchor rods / cables under static and dynamic tension during jointed rock deformation and movement. It has the advantages of intelligent operation, strong functionality, high precision, and good economic benefits.

[0005] Technical solution: To achieve the above technical objectives, this invention discloses a testing device for the mechanical properties of anchor bolts / cables under tension-shear loads, comprising an interconnected testing mechanism, a separate oil pump, and a multi-functional control console. The anchor bolts / cables are installed in the testing mechanism, and the multi-functional control console controls the operation of the separate oil pump via wiring.

[0006] The testing mechanism includes an upper testing mechanism connecting the ends of the anchor rod / cable and a lower testing mechanism connecting the tail of the anchor rod / cable. The upper testing mechanism includes a rectangular top plate with a pull-out module for fixing and clamping the ends of the anchor rod / cable located in the lower center of the top plate. A hydraulic auger providing power is connected to the pull-out module. Two pairs of vertical columns are vertically positioned at the four corners of the top plate for support. The lower testing mechanism includes a metal mounting platform with a lifting bracket below it that can be raised, lowered, or maintained at a certain height. The bottom of the lifting bracket is connected to the two pairs of columns, and the top of the lifting bracket is connected to the metal mounting platform via a track support. Two parallel tracks between the track support and the metal mounting platform allow the metal mounting platform to move horizontally. The metal mounting platform has a central opening. The device includes a fixing module for securing the end of the anchor rod / cable. The opening is threaded into the fixing module, and the end of the anchor rod / cable is secured to the bottom of the fixing module using washers and nuts. A shearing module is mounted on the metal fixing platform to apply a horizontal shearing force to the end of the anchor rod / cable being tested. The direction of the shearing force applied by the shearing module is perpendicular to the direction of track movement. A hydraulic jack is mounted on the shearing module to facilitate its movement, and a pressure sensor is located on the central cavity wall of the shearing module. After the fixing module secures the bottom of the anchor rod / cable, the hydraulic jack rotates continuously at a constant or variable speed as needed, driving the pulling module to rotate and rise. The adapting nut counteracts the rotation and rise of the pulling module, ensuring that the anchor rod / cable does not deviate from its original position and is continuously stretched. During this process, torque is converted into preload and static / dynamic tension.

[0007] The separate oil pump is connected to the hydraulic jack via a metal integrated pipe, the separate oil pump is connected to the hydraulic jack via a flexible integrated pipe, and the separate oil pump is connected to the lifting support via an oil delivery pipe, in order to control and maintain the height of the lifting support.

[0008] Furthermore, the lifting support includes two pairs of stabilizers connected to the inner sides of the bottom ends of two pairs of columns respectively. Each stabilizer is provided with an oil inlet and is connected to an oil pipe. The two pairs of stabilizers are respectively connected to two horizontally arranged converters. The middle of the converter is provided with a lifting device that can be raised and lowered under oil pressure.

[0009] Furthermore, the pulling module consists of two parts, upper and lower. The upper part is integrated with the central shaft of the hydraulic swivel and is connected by bolts to a claw mechanism for clamping the end of the anchor rod / cable. The claw mechanism is fixed to the end of the anchor rod / cable by a nut.

[0010] Furthermore, a hydraulic rotating mechanism is provided at the top of the column. The hydraulic rotating mechanism stores oil inside and introduces oil through a metal manifold to increase the oil pressure. The rotating shaft inside the hydraulic rotating mechanism rotates and rises, thereby driving the pulling module integrated with the rotating shaft to rotate and rise, and generating static and dynamic tension on the anchor rod / cable.

[0011] Furthermore, the fixing module can be quickly disassembled and replaced with the metal fixing platform via threads, and the central opening can accommodate anchor rods / cables of different sizes; the top surface of the metal fixing platform has a horizontal groove along the shearing force movement direction of the shearing module, and the lower part of the shearing module has a protruding structure that matches the horizontal groove of the metal fixing platform, and the center of the shearing module has an opening for installing anchor rods / cables.

[0012] Furthermore, the separate oil pump is equipped with a booster system and three oil tanks. The three oil tanks are respectively connected to a metal integrated pipe, a flexible integrated pipe, and an oil delivery pipe. The metal integrated pipe and the flexible integrated pipe are equipped with data channels, which can transmit the data of the drawing module and the shearing module to the multi-functional control console.

[0013] A method for using a testing device for the mechanical properties of anchor bolts / cables under tension-shear loads, comprising the following steps:

[0014] Turn on all machines and clear the initial data in the multifunction console;

[0015] Select appropriate nuts and fixing modules according to the size of the anchor bolt / cable, align the two parts of the pull-out module and screw in the fixing bolts, and screw the fixing module in from the bottom of the track support to fix it;

[0016] Lower the metal fixing platform using the control buttons on the metal fixing platform, and adjust the alignment of the shearing module and the metal fixing platform; pass the anchor rod / cable through the central hole and screw it into the inner cavity of the pulling module for an appropriate length, then raise the metal fixing platform to the preset height using the control buttons; install the tray and nut at the bottom of the fixing module.

[0017] Open the multi-function control console and use it to control the separate oil pump to output oil pressure to the flexible manifold, flexible manifold, and oil pipeline to achieve the required static and dynamic tensile loading speed, target static and dynamic tensile force value, or target torque value. This allows for the application of continuously changing static and dynamic tensile forces to the anchor rod / cable, testing the state changes of the anchor rod / cable under continuously changing static and dynamic tensile forces. After reaching the target value, input the shear force loading speed, target shear force value, or shear displacement value. During the shear force loading process, the static and dynamic tensile forces of the anchor rod / cable can remain constant as needed, or continuously change according to preset requirements.

[0018] After the test is completed, the shear force and static and dynamic tension are returned sequentially on the multi-functional control console, the nuts are removed, the anchor rod / cable is taken out, the data is saved, and the test ends.

[0019] Furthermore, multiple models of adaptable nuts and fixing modules are used for installation to accommodate anchor bolts / cables of different specifications; a multi-functional control console drives a separate oil pump, enabling the separate oil pump to control the oil pressure output of each channel independently, thus achieving shear tests under static and dynamic tensile conditions on the anchor bolts / cables.

[0020] ① For static and dynamic tensile tests of anchor bolts / cables, the loading rate is relatively low under static low-speed conditions, typically 1~10 kN / s; under static high-speed tensile conditions, the loading rate is typically 10~20 kN / s or even higher; under dynamic low-speed or high-speed tensile conditions, the anchor bolt / cable can be subjected to tensile dynamic loads in the form of triangular waves, sine waves, or cosine waves, with low frequencies of 0.00001~12 Hz and high frequencies of 0.01~70 Hz; the testing equipment can perform low-speed and high-speed tensile tests simultaneously with the application of tensile dynamic loads to the anchor bolt / cable, with the same loading rate as above;

[0021] ② For a single high- and low-speed shear test, that is, the anchor rod / cable is sheared at a certain shear load speed under static and dynamic tension conditions. The low-speed shear load is usually 1~10 kN / s, and the high-speed shear load is usually 10~20 kN / s or even higher. For repeated cyclic high- and low-speed shear tests, the anchor rod / cable can be sheared by repeatedly applying and removing high- and low-speed shear loads under static and dynamic tension conditions.

[0022] The multi-functional control console features real-time monitoring of torque-preload relationship and axial force, enabling the pull-out module to accurately apply the designed preload and static / dynamic tension to the anchor bolt / cable.

[0023] Beneficial Effects: Due to the adoption of the above technical solutions, this invention can adapt to various anchor bolt / cable specifications; the multi-functional console inputs commands to drive the separate oil pump, reducing the difficulty of experimental operation; the multi-functional console has a built-in real-time monitoring and calculation program for the torque-static / dynamic tension relationship, enabling the pull-out module to accurately apply the designed static / dynamic tension to the anchor bolt / cable. Furthermore, it allows the hydraulic jack to conduct single or repeated cyclic high- and low-speed shear tests on the anchor bolt / cable until failure, with the multi-functional console monitoring the stress state of the anchor bolt / cable throughout the process; the movement direction of the shearing module and the metal fixed platform can be changed according to design requirements to meet different shearing positions and shearing times. This invention is applicable to various anchor bolt / cable specifications, avoiding the difficulty of testing and performance testing due to different anchor bolt / cable sizes. It can accurately apply static / dynamic tension to the anchor bolt / cable based on the torque-static / dynamic tension relationship, simulating the shearing effect of jointed rock on any section of the anchor bolt / cable under static / dynamic tension conditions, testing and evaluating the shear resistance of the anchor bolt / cable. It has advantages such as intelligent operation, rich functions, high precision, and good economic benefits, and has good application research value. This invention patent has wide applicability in this technical field. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the anchor / cable mechanical property testing device under tension-shear load according to the present invention;

[0025] Figure 2 A schematic diagram of the structure of the anchor / cable mechanical property testing device under tension-shear load in an embodiment of the present invention;

[0026] In the diagram: 1-Column, 2-Top plate, 3-Stabilizer, 4-Converter, 5-Lifting device, 6-Rail support, 7-Rail, 8-Metal fixing platform, 9-Fixing module, 10-Shearing module, 11-Pressure sensor, 12-Oil inlet, 13-Nut, 14-Washer, 15-Anchor bolt / cable, 16-Control button, 17-Hydraulic jack, 18-Adaptive nut, 19-Fixing bolt, 20-Pull-out module, 21-Hydraulic turner, 22-Metal composite pipe, 23-Flexible composite pipe, 24-Oil inlet pipe, 25-Separate oil pump, 26-Multi-functional control console. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0028] The device for testing the mechanical properties of anchor bolts / cables under tension-shear loads of the present invention, such as... Figure 1As shown, the system includes four columns 1 that contact the ground. A central opening is located on the top plate 2 above each column 1, housing a hydraulic swivel mechanism 21. The hydraulic swivel mechanism 21 connects to a pulling module 20 and a metal integrated pipe 22. Below each column 1 are a stabilizer 3 and a converter 4. Each column 1 has an oil inlet 12 connected to an oil pipe 24. A lifting device 5 is positioned on top of the converter 4 and contacts the track 7 support 6. The lower half of the track 7 is embedded in the track 7 support 6, and the upper half of the track 7 supports a metal fixing platform 8. The central opening on the top of the metal fixing platform 8 has threads that mate with the threads on the side of the fixing module 9. The top of the metal fixing platform 8 connects to a movable shearing module 10. A hydraulic jack 17 is located on the left side of the shearing module 10, and a flexible integrated pipe 23 is located on the left side of the hydraulic jack 17. Figure 2 As shown, the separate oil pump 25 is equipped with a booster system and three oil tanks, which are respectively connected to the metal integrated pipe 22, the flexible integrated pipe 23 and the oil delivery pipe 24. The oil tank pressure data of the separate oil pump 25 and the test data obtained can be intelligently monitored by the multi-functional control console 26.

[0029] like Figure 2 As shown, the bottom of the column 1 is equipped with a stabilizer 3, a converter 4, and an oil inlet 12 for controlling and maintaining the height of the lifting device 5. The lifting device 5 is cylindrical. The oil inlet 12 is connected to an oil pipe 24. The top of the column 1 is equipped with a hydraulic swivel 21. The hydraulic swivel 21 stores a certain amount of oil inside. The oil is introduced through the metal manifold 22 to increase the oil pressure. The internal shaft rotates and rises. The shaft is integrated with the pulling module 20. The pulling module 20 is divided into two parts and connected by fixing bolts 19. Its lower end is provided with an inner cavity and an adapting nut 18. The adapting nut 18 can be detached and replaced to adapt to anchor rods / cables 15 of different sizes.

[0030] like Figure 2 As shown, the metal fixing platform 8 has a control button 16 connected to the side of the circuit. The control button 16 can control the lifting device 5 to move the track 7 support 6 up and down. The track 7 support 6 has a central opening and semi-embedded tracks 7 on both sides. The tracks 7 match the grooves on both sides of the metal fixing platform 8. The metal fixing platform 8 has a central opening on the top surface and is threaded. Its threads match the threads on the side of the fixing module 9. The fixing module 9 is detachable and replaceable. The central opening can accommodate anchor rods / cables 15 of different sizes. The two sides of the top surface of the metal fixing platform 8 are horizontally grooved and fit into the protruding parts on both sides of the shearing module 10. The central opening of the shearing module 10 can accommodate anchor rods / cables 15. One end of the shearing module 10 is equipped with a hydraulic jack 17, which is connected to the flexible integrated pipe 23.

[0031] like Figure 2As shown, the separate oil pump 25 is equipped with a booster system and three oil tanks, which are respectively connected to the metal integrated pipe 22, the flexible integrated pipe 23 and the oil delivery pipe 24. The metal integrated pipe 22 and the flexible integrated pipe 23 are equipped with data channels, which can transmit the data of the pulling module 20 and the shearing module 10 to the multi-functional control console 26.

[0032] The specific operating steps are as follows:

[0033] Step 1: Turn on all machines and clear the initial data in the multi-function control panel 26.

[0034] Step 2: Replace the appropriate fit nut 18 and fixing module 9 according to the size of the anchor / cable 15, align the two parts of the pull-out module 20 and screw in the fixing bolt 19, and screw the fixing module 9 into the bottom of the track 7 support 6 for fixing;

[0035] Step 3: Press the "Lower" button on control button 16 until the metal fixing platform 8 is lowered to the lowest position, adjust the alignment of the shearing module 10 and the metal fixing platform 8; pass the anchor rod / cable 15 through the central hole and screw it into the inner cavity of the pulling module 20 for an appropriate length, press the "Up" button on control button 16 until the metal fixing platform 8 rises to the appropriate height; install the tray and nut 13 at the bottom of the fixing module 9.

[0036] Step 4: Open the data testing software on the multi-functional control console 26 and set the protection value; input the static and dynamic tensile loading speed, target static and dynamic tensile force value or target torque value on the multi-functional control console 26; after reaching the target value, input the shear force loading speed, target shear force value or shear displacement value; after reaching the target value, sequentially reduce the shear force and static and dynamic tensile force on the multi-functional control console 26, remove the nut 13, take out the anchor rod / cable 15, save the data, and the test ends.

[0037] The specific embodiments described above are merely illustrative or explanatory of the principles of the present invention and do not constitute a limitation thereof.

Claims

1. A device for testing the mechanical properties of an anchor rod / cable under tensile-shear load, characterized in that: The anchor rod / cable (15) is arranged in the testing mechanism, the multifunctional console (26) controls the operation of the separate oil pump (25) through a line; The upper testing mechanism includes a top plate (2) in a rectangular structure, a pulling module (20) for fixing the anchor rod / cable (15) end is arranged below the middle of the top plate (2), a powered hydraulic winch (21) is connected to the pulling module (20), and two pairs of vertical columns (1) serving as supports are vertically arranged below the four corners of the top plate (2); the lower testing mechanism includes a metal fixing table (8), a lifting support capable of being lifted or maintaining a height as required is arranged below the metal fixing table (8), the bottom of the lifting support is connected with the two pairs of columns (1) respectively, the top of the lifting support is connected with the metal fixing table (8) through a rail bearing table (6), two rails (7) capable of translating the metal fixing table (8) are arranged in parallel between the rail bearing table (6) and the metal fixing table (8), a fixing module (9) for fixing the tail end of the anchor rod / cable (15) is arranged in a hole in the center of the metal fixing table (8), the hole is threadedly fixed with the fixing module (9), and the tail end of the anchor rod / cable (15) is fixed to the bottom of the fixing module (9) through a gasket (14) and a nut (13); a shearing module (10) capable of exerting a horizontal shearing force on the terminal end of the anchor rod / cable (15) under test is arranged on the metal fixing table (8), the direction in which the shearing module (10) exerts the shearing force is perpendicular to the moving direction of the rail (7); a hydraulic jack (17) for providing movement of the shearing module (10) is arranged on the shearing module (10), and a pressure sensor (11) is arranged on the wall of the central cavity of the shearing module (10); after the fixing module (9) fixes the anchor rod / cable (15) below, the hydraulic winch (21) continuously rotates at a uniform speed or a variable speed as required and drives the pulling module (20) to rotate and lift, the nut (18) is adapted to offset the rotation and lifting of the pulling module (20) to ensure that the anchor rod / cable (15) is not deviated from the original position and is continuously lengthened, and in the process, the torque is converted into pre-tightening force and static and dynamic tension; The separate oil pump (25) is connected with the hydraulic winch (21) through a metal comprehensive pipe (22), connected with the hydraulic jack (17) through a flexible comprehensive pipe (23), and connected with the lifting support through an oil conveying pipe (24) for controlling and maintaining the lifting height of the lifting support.

2. The device for testing mechanical properties of rock anchors / cables under tension-shear load according to claim 1, characterized in that: The lifting support includes two pairs of stabilizers (3) connected with the inner sides of the bottom ends of the two pairs of columns (1) respectively, each stabilizer (3) is provided with an oil conveying interface (12) and connected with the oil conveying pipe (24) respectively, and the two pairs of stabilizers (3) are respectively connected with two horizontally arranged converters (4), and the middle of the converter (4) is provided with a lifting device (5) capable of lifting under oil pressure.

3. The device for testing mechanical properties of rock anchors / cables under tension-shear load according to claim 1, characterized in that: The drawing module (20) comprises two parts, the upper part is integrated with the center rotating shaft of the hydraulic rotating machine (21), and is connected with a claw mechanism for clamping the end of the anchor rod / cable (15) through a bolt (19), and the claw mechanism is fixed with the end of the anchor rod / cable (15) through an adaptive nut (18).

4. The device for testing mechanical properties of rock anchors / cables under tension-shear load according to claim 1, characterized in that: The top of the column (1) is provided with a hydraulic rotating machine (21), the inside of the hydraulic rotating machine (21) stores oil, the oil pressure is increased through the metal comprehensive pipe (22) to enter the oil, and the rotating shaft in the hydraulic rotating machine (21) rotates to lift, thereby driving the drawing module (20) integrated with the rotating shaft to rotate and lift and generating static and dynamic tension on the anchor rod / cable (15).

5. The device for testing mechanical properties of rock anchors / cables under tension-shear load according to claim 1, characterized in that: The fixed module (9) can be quickly disassembled and replaced with the metal fixing table (8) through threads, the center hole can pass through anchor rods / cables (15) of different sizes; the top surface of the metal fixing table (8) is provided with a horizontal groove along the direction of the shearing force of the shearing module (10), the lower part of the shearing module (10) is provided with a protruding structure matched with the horizontal groove of the metal fixing table (8), and the center of the shearing module (10) is provided with a hole for installing the anchor rod / cable (15).

6. The device for testing mechanical properties of rock anchors / cables under tension-shear load according to claim 1, characterized in that: The inside of the separated oil pump (25) is provided with a pressure increasing system and three oil tanks, the three oil tanks are connected with the metal comprehensive pipe (22), the flexible comprehensive pipe (23) and the oil delivery pipe (24) respectively, the inside of the metal comprehensive pipe (22) and the flexible comprehensive pipe (23) is provided with a data channel, which can transmit the data of the drawing module (20) and the shearing module (10) to the multifunctional console (26).

7. The method according to any one of claims 1 to 6, wherein the method further comprises the step of: The steps are as follows: ​ Start all machines, and clear the initial data of the multifunctional console (26); According to the size of the anchor rod / cable (15), select the appropriate adaptive nut (18) and fixed module (9), align the positions of the two parts of the drawing module (20) and screw in the fixing bolt (19), and screw the fixed module (9) into the bottom of the track bearing table (6); Control the metal fixing table (8) to lower through the control button (16) on the metal fixing table (8), adjust the centering position of the shearing module (10) and the metal fixing table (8), pass the anchor rod / cable (15) through the center hole, and screw it into the inner cavity of the drawing module (20) to an appropriate length, and raise the metal fixing table (8) to the preset height through the control button (16); install the gasket (14) and nut (13) on the bottom of the fixed module (9); Turn on the multifunctional console (26), use the multifunctional console (26) to control the separated oil pump (25) to output the oil pressure of the metal comprehensive pipe (22), the flexible comprehensive pipe (23) and the oil delivery pipe (24) to achieve the required static and dynamic tension loading speed, target static and dynamic tension value or target torque value, so as to realize the loading of the anchor rod / cable (15) with changing static and dynamic tension, and test the state change of the anchor rod / cable (15) under the changing static and dynamic tension; After reaching the target value, input the shearing force loading speed, target shearing force value or shearing displacement value, and keep the static and dynamic tension of the anchor rod / cable (15) unchanged or change continuously according to the preset requirements during the loading of the shearing force; ​ After the test is completed, the shearing force and static and dynamic tension are returned in sequence on the multifunctional console (26), the nut (13) is disassembled, the anchor rod / cable (15) is taken out, the data is saved, and the test is completed.

8. The method of use of claim 7, wherein: The installation mode of multiple types of adaptive nuts (18) and fixed modules (9) is adopted to adapt to anchor rods / cables (15) of different specifications; the multifunctional console (26) drives the split oil pump (25) to work, so that the split oil pump (25) can control the oil pressure output of each channel respectively, and realize the shearing test of the anchor rod / cable in static and dynamic tension state: ①For anchor rod / cable static and dynamic tension test, the loading rate is low in static low-speed state, usually 1~10 kN / s; the loading rate is usually 10~20 kN / s or even higher in static high-speed tension state; in dynamic low-speed or high-speed tension state, triangular wave, sinusoidal wave or cosine wave can be applied to the anchor rod / cable, with low frequency of 0.00001~12 Hz and high frequency of 0.01~70 Hz; the test equipment can perform low-speed and high-speed tension test while applying dynamic tension load to the anchor rod / cable, with the same loading rate as above; ②For single high-low speed shearing test, the anchor rod / cable is sheared by a certain shearing load speed in static and dynamic tension state, the low-speed shearing load is usually 1~10 kN / s, and the high-speed shearing load is usually 10~20 kN / s or even higher; for repeated high-low speed shearing test, the anchor rod / cable can be sheared by repeatedly applying high-low speed shearing load and removing high-low speed shearing load in static and dynamic tension state; The multifunctional console (26) has torque-preload relationship and real-time monitoring function of axial force, so that the pulling module (20) can accurately apply designed preload and static and dynamic tension to the anchor rod / cable (15).

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