Test method for interface mechanical property of reinforced material

Abstract

The invention discloses a method for testing the interface mechanical property of a reinforced material, which adopts a side slope reinforced material interface simulation device for testing, can simulate different construction geological form environments, and correspondingly sets shear mold boxes with different combination styles for testing. The control display terminal is connected with the pressurization system, the traction system, the pressure sensor, the tension sensor and the displacement sensor, pressurization and tension parameters are controlled, data such as pressure, tension and displacement in the test process are monitored in real time, and friction coefficients in different interface states are calculated. Reliable simulation data can be provided for the durability design of related reinforced materials in a specific slope structure form and the safe use period of an existing reinforced soil flexible supporting structure, operation is easy, and adaptability is wide.

Description

Technical Field

[0001] The present invention relates to the technical field of soil performance testing, and more specifically, to a testing method for the mechanical properties of a reinforcement material interface. Background Art

[0002] The test methods for the mechanical properties of reinforced soil interface mainly include direct shear test and pull-out test. The direct shear test is generally tested by direct shear instrument. The shear strength of soil is the ultimate strength of soil to resist shear when one part of the soil slides against another part of the soil under the action of external force. This test is to directly apply horizontal shear force along the fixed shear surface to several samples of the same soil under different vertical pressures to obtain the shear stress at the time of failure, and then determine the shear strength index, internal friction angle and cohesion of the soil according to Coulomb's law. The specific test method is to put the soil sample into the shear box, fix the upper box, and slide the lower box in the horizontal direction. First, apply vertical pressure, and then apply horizontal shear force to the lower box of the shear box step by step until the sample is sheared. However, the current test instrument can only test the interaction between the upper and lower soil bodies. In the actual slope environment, the interaction relationship between the reinforced soil filling layers set in layers is more complicated, and the slope has a certain slope. The existing test method is difficult to reflect the action state in the real environment. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] Another object of the present invention is to provide a test method for the mechanical properties of the interface of a reinforced material, so as to solve the technical problem that the direct shear test in the prior art is too far away from the actual mechanical environment of the slope.

[0005] In order to achieve these purposes and other advantages according to the present invention, a test method for the mechanical properties of the interface of a reinforcement material is provided, and a slope reinforcement material interface simulation device is used for the test. The slope reinforcement material interface simulation device comprises: A table, the upper surface of which is horizontally arranged, a support platform is arranged on the table, the upper surface of the support platform is horizontal, a pair of raised limiting strips are arranged relatively parallel on the support platform, the limiting strips extend along the length direction of the support platform, and a guide area is formed between the pair of limiting strips; The shear force mold box comprises a plurality of C-shaped mold boxes stacked in layers vertically, the C-shaped mold boxes are horizontally arranged on the guide area, the width of the C-shaped mold box is equal to the spacing between a pair of limit bars and the C-shaped mold box can slide freely relative to the limit bars, the open end of the C-shaped mold box is detachably connected with an interface module to form a ring-closed test box, and the inner side of the test box is used to place a layer of soil sample, or a reinforcement strip sample and a soil sample; A pressurizing system is installed on the table, the pressurizing system has a pressurizing end, a pressure sensor is provided on the pressurizing end, and the pressurizing end is arranged above the guide area and is used to apply the required pressure to the soil sample directly below; A traction system is installed on the table and is located on the side of the opening facing away from the C-shaped mold box. The traction system is horizontally provided with a plurality of traction ends facing the shear mold box. Each traction end is connected to a C-shaped mold box and is used to control the movement state of the C-shaped mold box in the extension direction of the limit strip. A tension sensor is provided on the traction system, and a displacement sensor is also provided on the table corresponding to the traction end, which is used to detect the displacement of the corresponding C-shaped mold box driven by the traction end; A control display terminal is respectively connected to the pressurizing system, the traction system, the pressure sensor, the tension sensor, and the displacement sensor for controlling the operation of the pressurizing system and the traction system, and obtaining data of the pressure sensor, the tension sensor, and the displacement sensor; The test method includes the following steps: S1. Layer the C-shaped mold boxes and interface modules, put the soil and reinforcement strip samples of the corresponding layers into the test box, and keep all the C-shaped mold boxes in the same vertical direction; S2, using a pressurizing system to pressurize the soil downward; S3. Use the traction system to apply tension to the corresponding layer of the shear mold box, obtain the traction force through the corresponding displacement sensor and tension sensor, and use the traction force to calculate the friction coefficient of the reinforced material interface.

[0006] Preferably, a heating and humidification system is also provided, and the heating and humidification system includes a thermal insulation cover arranged on the outside of the support platform and the shear force mold box, and a temperature sensor and a humidity sensor arranged on the support platform. The temperature sensor and the humidity sensor are respectively communicated with the control display terminal, and are used to detect the corresponding temperature or humidity around the shear force mold box. The thermal insulation cover is provided with channel holes corresponding to the traction system and the pressurization system. At least one side of the thermal insulation cover is a transparent surface. A duct group is connected to the bottom of one side of the thermal insulation cover, and hot air is introduced or heat exchange gas is discharged through the duct group. In step S1, after the test box is arranged, the thermal insulation cover is set, and the heated or humidified gas is introduced to the corresponding sensor to achieve the corresponding data, thereby completing the test environment setting.

[0007] Preferably, the height of the C-shaped mold box is equal to the height of the interface module, a plurality of pairs of vertical edges are arranged at opposite ends of the C-shaped mold box, one pair of vertical edges is located at the end edge of the C-shaped mold box, the width of the interface module is equal to the distance between the two ends of the C-shaped mold box, one end of the interface module in the length direction is an inclined surface and the other end is a vertical surface, a plurality of pairs of vertical grooves are symmetrically arranged on both sides of the width direction of the interface module, the vertical grooves are arranged in coordination with the vertical edges, and the interval between adjacent pairs of vertical edges is equal to the horizontal width of the inclined surface; When testing the mechanical properties of multiple interfaces of a soil sample, a rectangular space for accommodating the soil sample is formed in the test box by placing the vertical surface of the interface module toward the inner side of the C-shaped mold box, aligning the vertical groove and inserting it downward on the vertical edge; By placing the inclined surface of the interface module toward the inner side of the C-shaped mold box, aligning the vertical groove and inserting it downward on the vertical edge, an inverted trapezoidal space for accommodating the soil sample is formed in the test box; When the inclined surfaces of two adjacent interface modules are facing the inner side of the C-shaped mold box, the upper interface module is staggered and inserted on the vertical edge farther away from the inner side of the C-shaped mold box relative to the lower interface module, forming an inverted trapezoidal space spliced ​​up and down on the inner side of the two C-shaped mold boxes.

[0008] Preferably, a slide groove is provided on the table along the length direction of the limit strip, and a plurality of fixing holes are provided on the outside of the slide groove. A sliding block is fixed downwardly at the bottom of the support platform, and the sliding block is located in the slide groove and can slide along the slide groove to drive the support platform to move, so as to align the different pressurization positions required for the soil sample directly below the pressurization system, and a screw hole is provided through the end of the support platform, and the support platform is fixed at the corresponding position on the table by screwing bolts into the fixing holes and the screw holes at the corresponding positions.

[0009] Preferably, the traction system includes a shelf and a plurality of traction cylinders, the shelf being fixed on the table, the cylinder body of each traction cylinder being fixed on one of the layers of the shelf, the telescopic end of the traction cylinder being connected to a traction rod, the end of the traction rod being hinged and fixed to the C-shaped mold box of a corresponding height in a horizontal direction, each traction cylinder being communicatively connected to the control and display terminal, the displacement sensor being respectively provided for each traction rod, and detecting the displacement of the corresponding traction rod when a pulling force is applied to the C-shaped mold box by the traction cylinder.

[0010] Preferably, a slot is provided downwardly on the top surface of one side of the end of the limit strip near the guide area, and a vertical plate in an L-shape in the horizontal plane is inserted into the slot. The vertical plate is flush with the top corner of the C-shaped mold box. When the C-shaped mold boxes are stacked vertically, the C-shaped mold boxes are aligned with the vertical plate, and then hinged and fixed to the traction rod, and then the vertical plate is pulled out.

[0011] Preferably, the pressurizing system includes a stand fixed on the table and a pressurizing cylinder installed on the stand. The pressurizing cylinder is arranged vertically downward and the telescopic end of the pressurizing cylinder is detachably connected to a steel plate, through which pressure is applied to the soil sample.

[0012] The present invention includes at least the following beneficial effects: the test method of the mechanical properties of the interface of the reinforced material of the present invention adopts the slope reinforced material interface simulation device to carry out the test, which can simulate different construction geological morphological environments and set up shear mold boxes of different combination styles for testing. By controlling the display terminal to connect the pressurization system, the traction system, the pressure sensor, the tension sensor, and the displacement sensor, the pressurization and tension parameters are controlled, and the pressure, tension, displacement and other data during the test are monitored in real time to calculate the friction coefficient under different interface states. Reliable simulation data can be provided for the durability design of the relevant reinforced materials under specific slope structural forms and the safe use period of the existing reinforced soil flexible support structure. The operation is simple and the adaptability is wide.

[0013] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a main structural diagram of the slope reinforcement material interface simulation device of the present invention; Figure 2 This is a main structural diagram of the shear force mold box of the present invention when it is loaded with soil and reinforcement strip samples; Figure 3 It is a top view of the shear mold box of the present invention; Figure 4 A top view of the interface module of the present invention; The accompanying drawings in the specification are marked with 1, table, 2, support table, 3, limit strip, 4, shear mold box, 5, C-shaped mold box, 6, interface module, 7, pressurization system, 8, traction system, 9, displacement sensor, 10, thermal insulation cover, 11, temperature sensor, 12, humidity sensor, 13, duct group, 14, vertical edge, 15, inclined plane, 16, vertical plane, 17, vertical groove, 18, slide, 19, bolt, 20, shelf, 21, traction cylinder, 22, traction rod, 23, slot, 24, vertical plate, 25, stand, 26, pressurization cylinder, 27, steel plate, 30, soil sample, 31, reinforcement belt sample. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0016] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] like Figure 1-4 As shown, the present invention provides a test method for the mechanical properties of the interface of a reinforced material, and the test is performed using a slope reinforced material interface simulation device, the slope reinforced material interface simulation device comprising: A table 1, whose upper surface is horizontally arranged, is provided with a support table 2 on the table 1, whose upper surface is horizontal, and a pair of raised limiting strips 3 are relatively parallelly arranged on the support table 2, the limiting strips 3 extend along the length direction of the support table 2, and a guide area is formed between the pair of limiting strips 3; The shear force mold box 4 includes a plurality of C-shaped mold boxes 5 stacked in layers vertically, the C-shaped mold boxes 5 are horizontally arranged on the guide area, the width of the C-shaped mold box 5 is equal to the spacing between a pair of limit bars 3 and can slide freely relative to the limit bars 3, the open end of the C-shaped mold box 5 is detachably connected with an interface module 6 to form an annular closed test box, the inner side of the test box is used to place a layer of soil sample 30, or, a reinforcement strip sample 31 and a soil sample 30; A pressurizing system 7 is installed on the table 1. The pressurizing system 7 has a pressurizing end, on which a pressure sensor is provided. The pressurizing end is arranged above the guide area and is used to apply a required pressure to the soil sample 30 directly below. The traction system 8 is installed on the table 1 and is located on the side of the opening facing away from the C-shaped mold box 5. The traction system 8 is horizontally provided with a plurality of traction ends facing the shear mold box 4. Each traction end is connected to a C-shaped mold box 5 and is used to control the movement state of the C-shaped mold box 5 in the extension direction of the limit strip 3. The traction system 8 is provided with a tension sensor, and the table 1 is also provided with a displacement sensor 9 corresponding to the traction end, which is used to detect the displacement of the corresponding C-shaped mold box 5 driven by the traction end; A control display terminal is respectively connected to the pressurizing system 7, the traction system 8, the pressure sensor, the tension sensor, and the displacement sensor 9 for controlling the operation of the pressurizing system 7 and the traction system 8, and obtaining data of the pressure sensor, the tension sensor, and the displacement sensor 9; The test method includes the following steps: S1, stack the C-shaped mold boxes 5 and the interface modules 6 in layers, put the soil and the reinforcement strip samples 31 of the corresponding layers into the test box, and keep all the C-shaped mold boxes 5 in the same vertical direction; S2, using the pressurizing system 7 to pressurize the soil downward; S3. Use the traction system 8 to apply tension to the corresponding layer of the shear mold box 4, obtain the traction force through the corresponding displacement sensor 9 and the tension sensor, and use the traction force to calculate the friction coefficient of the interface of the reinforced material.

[0018] For ease of explanation, Figure 1 The left and right directions are the length directions of the table 1 or the support table 2. The whole device is installed on the table 1. The support table 2 is set near the middle position. The support table 2 is used to set the shear mold box 4. A pair of parallel limit strips 3 on the support table 2 limit the two sides of the width direction of the C-shaped mold box 5, that is, Figure 1 In the front-to-back direction, the upper and lower C-shaped mold boxes 5 are aligned and stacked, and each layer of the C-shaped mold box 5 is spliced ​​with an interface module 6 to form a test box with a specific shape on the inside. The number of layers of the test box is set according to the test requirements. If only two test boxes are set, it can be used as the simplest and most intuitive test of the relative friction and movement law of the soil on the upper and lower sides of a single tensioning belt. According to the test requirements of the slope inclined surface 15, the interface module 6 can be spliced ​​on one side of the C-shaped mold box 5 and set to an inclined surface shape. The trapezoidal soil sample is tested. The slope of the inclined surface and the length of the C-shaped mold box 5 can be designed and replaced for applicability according to the simulated slope slope parameters. During the test, the density, compaction degree and other parameters of the soil sample 30 are obtained and controlled, the test conditions are set, the pressurization system 7 and the traction system 8 are arranged, and the existing technology is used to repeat the test many times, which will not be repeated here.

[0019] The test method for the mechanical properties of the interface of the reinforced material of the present invention adopts a slope reinforced material interface simulation device for testing, which can simulate different construction geological morphological environments and set up shear mold boxes 4 of different combination styles for testing. By controlling the display terminal to connect the pressurization system 7, the traction system 8, the pressure sensor, the tension sensor, and the displacement sensor 9, the pressurization and tension parameters are controlled, and the pressure, tension, displacement and other data during the test are monitored in real time to calculate the friction coefficient under different interface conditions. Reliable simulation data can be provided for the durability design of the relevant reinforced materials under specific slope structural forms and the safe use period of the existing reinforced soil flexible support structure. The operation is simple and the adaptability is wide.

[0020] In another technical solution, Figure 1As shown, a heating and humidification system is also provided. The heating and humidification system includes a thermal insulation cover 10 provided on the outside of the support platform 2 and the shear force mold box 4, and a temperature sensor 11 and a humidity sensor 12 provided on the support platform 2. The temperature sensor 11 and the humidity sensor 12 are respectively connected to the control display terminal for communication, and are used to detect the corresponding temperature or humidity around the shear force mold box 4. The thermal insulation cover 10 is provided with a channel hole corresponding to the traction system 8 and the pressurization system 7. The corresponding structure penetrates into the thermal insulation cover 10 through the channel hole. Certain sealing measures are provided at the channel hole to ensure that the operation of the traction system 8 and the pressurization system 7 and the accuracy of parameter acquisition are not affected. At least one side of the thermal insulation cover 10 is a transparent surface. A duct group 13 is provided at the bottom of one side of the thermal insulation cover 10. Hot air, steam or heat exchange gas is introduced through the duct group 13. In step S1, after the test box is arranged, the thermal insulation cover 10 is provided, and the heated or humidified gas is introduced to the corresponding sensor to achieve the corresponding data, and the test environment setting is completed. By setting up a heating and humidification system, the required temperature and humidity test environment is provided to the shear form box 4 before the test, thereby improving the test diversity and being able to more realistically simulate the environment during actual application construction and the subsequent evolution of the flexible support structure in the environment.

[0021] In another technical solution, Figure 1-4 As shown, the height of the C-shaped mold box 5 is equal to the height of the interface module 6, and a plurality of pairs of vertical edges 14 are relatively arranged at both ends of the C-shaped mold box 5, wherein a pair of vertical edges 14 is located at the end edge of the C-shaped mold box 5, and the width of the interface module 6 is equal to the distance between the two ends of the C-shaped mold box 5, and the interface module 6 is provided with an inclined surface 15 at one end in the length direction and a vertical surface 16 at the other end, and a plurality of pairs of vertical grooves 17 are symmetrically provided on both sides in the width direction of the interface module 6, and the vertical grooves 17 are arranged in coordination with the vertical edges 14, and the interval between adjacent pairs of vertical edges 14 is equal to the horizontal width of the inclined surface 15; When testing the mechanical properties of multiple interfaces of the soil sample 30, the vertical surface 16 of the interface module 6 is directed toward the inner side of the C-shaped mold box 5, aligned with the vertical groove 17 and inserted downward on the vertical edge 14, so as to form a rectangular space in the test box for accommodating the soil sample 30; By placing the inclined surface 15 of the interface module 6 toward the inner side of the C-shaped mold box 5 and aligning the vertical groove 17 and inserting it downward on the vertical edge 14, an inverted trapezoidal space for accommodating the soil sample 30 is formed in the test box; When the inclined surfaces 15 of two adjacent interface modules 6 are facing the inner side of the C-shaped mold box 5, the upper interface module 6 is staggered and inserted on the vertical edge 14 farther away from the inner side of the C-shaped mold box 5 relative to the lower interface module 6, forming an inverted trapezoidal space spliced ​​up and down on the inner side of the two C-shaped mold boxes 5.

[0022] By setting mutually cooperating vertical edges 14 and vertical grooves 17 structures on the C-shaped mold box 5 and the interface module 6, the test box can be spliced ​​by vertical sliding and plugging the vertical edges 14 and the vertical grooves 17 during assembly. A friction force or a horizontal connection structure of the contact surfaces can be set between the C-shaped mold box 5 and the interface module 6, or even a temporary welding fixation can be performed to ensure the vertical stability of the test box structure. It is only necessary that the vertical interaction between the C-shaped mold box 5 and the interface module 6 has a small effect on the determination of the soil friction coefficient. For the multi-layer soil structure to be tested, multiple test boxes are set and stacked upward. At this time, the multi-layer interface module 6 is specially designed according to needs, and the angle of the inclined surface 15 is designed to match the spacing of the vertical edges 14. When the inclined surface 15 is provided, multiple inclined surfaces 15 can form a continuous transitional overall inclined surface 15 in the vertical direction, thereby more realistically simulating the inclination shape of the slope and the setting of the reinforced flexible support structure on the slope.

[0023] In another technical solution, Figure 1 As shown, a slide groove 18 is opened on the table 1 along the length direction of the limit strip 3, and a plurality of fixing holes are set on the table 1 on the outside of the slide groove 18. A sliding block is fixed downwardly at the bottom of the support platform 2, and the sliding block is located in the slide groove 18 and can slide along the slide groove 18 to drive the support platform 2 to move, and align the different pressurization positions required for the soil sample 30 directly below the pressurization system 7. A screw hole is opened through the end of the support platform 2, and the bolts 19 are screwed into the fixing holes and the screw holes at the corresponding positions to fix the support platform 2 at the corresponding positions on the table 1.

[0024] By setting the slide groove 18, according to the shape of the test box, the horizontal position of the mobile test box and the support platform 2 can be better matched to the position of the pressurizing system 7. When the position of the support platform 2 is fixed, the bolt 19 is screwed into the screw hole to cooperate with the detachable fixation.

[0025] In another technical solution, Figure 1 As shown, the traction system 8 includes a layer frame 20 and a plurality of traction cylinders 21. The layer frame 20 is fixed on the table 1. The cylinder body of each traction cylinder 21 is fixed on one layer of the layer frame 20. The telescopic end of the traction cylinder 21 is connected to a traction rod 22. The end of the traction rod 22 is hinged and fixed to the C-shaped mold box 5 of the corresponding height along the horizontal direction. Each traction cylinder 21 is communicatively connected to the control and display terminal. The displacement sensor 9 is respectively arranged corresponding to each traction rod 22. When a pulling force is applied to the C-shaped mold box 5 through the traction cylinder 21, the displacement of the corresponding traction rod 22 is detected.

[0026] The traction cylinder 21 is supported and installed by the shelf 20, and is kept at the same height as the corresponding C-shaped mold box 5, with the traction direction being horizontal. Each traction cylinder 21 can be independently connected and controlled by the control display terminal. As needed, no tension can be applied to the C-shaped mold boxes 5 at different heights to keep the position of the test box unchanged, or different tensions can be applied to achieve various interaction simulation tests between different layers of soil samples 30 and reinforcement strip samples 31.

[0027] In another technical solution, Figure 1-2 As shown, a slot 23 is downwardly opened on the top surface of one side of the end of the limit strip 3 near the guide area, and a vertical plate 24 in an L-shape in the horizontal plane is inserted into the slot 23. The vertical plate 24 is flush with the top corner of the C-shaped mold box 5. When the C-shaped mold boxes 5 are stacked vertically, the C-shaped mold boxes 5 are aligned by the vertical plate 24, and then hinged and fixed to the traction rod 22, and then the vertical plate 24 is pulled out.

[0028] An L-shaped vertical plate 24 is inserted into the slot 23. The L-shaped vertical plate 24 is located at the top corners of all C-shaped mold boxes 5 to facilitate vertical alignment and stacking of the test boxes. After completing the guiding and limiting, the vertical plate 24 can be removed before applying the tensile traction test.

[0029] In another technical solution, Figure 1 As shown, the pressurizing system 7 includes a stand 25 fixed on the table 1 and a pressurizing cylinder 26 installed on the stand 25. The pressurizing cylinder 26 is arranged vertically downward and the telescopic end of the pressurizing cylinder 26 is detachably connected to a steel plate 27, and pressure is applied to the soil sample 30 through the steel plate 27. According to the different forms of the test box on the lower side, the steel plate 27 of the corresponding specification can be adaptively replaced to improve the test applicability of the overall device.

[0030] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A test method for the mechanical properties of the interface of a reinforced material, characterized in that: The test is carried out using a slope reinforcement material interface simulation device, which includes: A table, the upper surface of which is horizontally arranged, a support platform is arranged on the table, the upper surface of the support platform is horizontal, a pair of raised limiting strips are arranged relatively parallel on the support platform, the limiting strips extend along the length direction of the support platform, and a guide area is formed between the pair of limiting strips; The shear force mold box comprises a plurality of C-shaped mold boxes stacked in layers vertically, the C-shaped mold boxes are horizontally arranged on the guide area, the width of the C-shaped mold box is equal to the spacing between a pair of limit bars and the C-shaped mold box can slide freely relative to the limit bars, the open end of the C-shaped mold box is detachably connected with an interface module to form a ring-closed test box, and the inner side of the test box is used to place a layer of soil sample, or a reinforcement strip sample and a soil sample; A pressurizing system is installed on the table, the pressurizing system has a pressurizing end, a pressure sensor is provided on the pressurizing end, and the pressurizing end is arranged above the guide area and is used to apply the required pressure to the soil sample directly below; A traction system is installed on the table and is located on the side of the opening facing away from the C-shaped mold box. The traction system is horizontally provided with a plurality of traction ends facing the shear mold box. Each traction end is connected to a C-shaped mold box and is used to control the movement state of the C-shaped mold box in the extension direction of the limit strip. A tension sensor is provided on the traction system, and a displacement sensor is also provided on the table corresponding to the traction end, which is used to detect the displacement of the corresponding C-shaped mold box driven by the traction end; A control display terminal is respectively connected to the pressurizing system, the traction system, the pressure sensor, the tension sensor, and the displacement sensor for controlling the operation of the pressurizing system and the traction system, and obtaining data of the pressure sensor, the tension sensor, and the displacement sensor; The test method includes the following steps: S1. Layer the C-shaped mold boxes and interface modules, put the soil and reinforcement strip samples of the corresponding layers into the test box, and keep all the C-shaped mold boxes in the same vertical direction; S2, using a pressurizing system to pressurize the soil downward; S3. Use the traction system to apply tension to the corresponding layer of the shear mold box, obtain the traction force through the corresponding displacement sensor and tension sensor, and use the traction force to calculate the friction coefficient of the reinforced material interface.

2. The test method for the mechanical properties of the interface of the reinforcement material according to claim 1, characterized in that: It also includes setting up a heating and humidification system, which includes a thermal insulation cover arranged on the outside of the support platform and the shear mold box, and a temperature sensor and a humidity sensor arranged on the support platform. The temperature sensor and the humidity sensor are respectively connected to the control display terminal for communication, and are used to detect the corresponding temperature or humidity around the shear mold box. The thermal insulation cover is provided with channel holes corresponding to the traction system and the pressurization system. At least one side of the thermal insulation cover is a transparent surface. A duct group is connected to the bottom of one side of the thermal insulation cover, and hot air is introduced or heat exchange gas is discharged through the duct group. In step S1, after the test box is arranged, the thermal insulation cover is set, and the heated or humidified gas is introduced to the corresponding sensor to achieve the corresponding data, and the test environment setting is completed.

3. The test method for the mechanical properties of the interface of the reinforcement material according to claim 1, characterized in that: The height of the C-shaped mold box is equal to the height of the interface module, and a plurality of pairs of vertical edges are arranged oppositely at the two ends of the C-shaped mold box, wherein a pair of vertical edges is located at the end edge of the C-shaped mold box, and the width of the interface module is equal to the distance between the two ends of the C-shaped mold box, and one end of the interface module in the length direction is an inclined surface and the other end is a vertical surface, and a plurality of pairs of vertical grooves are symmetrically arranged on both sides of the width direction of the interface module, and the vertical grooves are arranged in coordination with the vertical edges, and the interval between adjacent pairs of vertical edges is equal to the horizontal width of the inclined surface; When testing the mechanical properties of multiple interfaces of a soil sample, a rectangular space for accommodating the soil sample is formed in the test box by placing the vertical surface of the interface module toward the inner side of the C-shaped mold box, aligning the vertical groove and inserting it downward on the vertical edge; By placing the inclined surface of the interface module toward the inner side of the C-shaped mold box, aligning the vertical groove and inserting it downward on the vertical edge, an inverted trapezoidal space for accommodating the soil sample is formed in the test box; When the inclined surfaces of two adjacent interface modules are facing the inner side of the C-shaped mold box, the upper interface module is staggered and inserted on the vertical edge farther away from the inner side of the C-shaped mold box relative to the lower interface module, forming an inverted trapezoidal space spliced ​​up and down on the inner side of the two C-shaped mold boxes.

4. The test method for the mechanical properties of the interface of the reinforcement material according to claim 1, characterized in that: A slide groove is provided on the table along the length direction of the limit strip, and a plurality of fixing holes are provided on the outside of the slide groove. A sliding block is fixed downwardly at the bottom of the support platform, and the sliding block is located in the slide groove and can slide along the slide groove to drive the support platform to move, so as to align the different pressurization positions required for the soil sample directly below the pressurization system, and a screw hole is provided through the end of the support platform, and the support platform is fixed at the corresponding position on the table by screwing bolts into the fixing holes and the screw holes at the corresponding positions.

5. The test method for the mechanical properties of the interface of the reinforcement material according to claim 1, characterized in that: The traction system includes a shelf and multiple traction cylinders. The shelf is fixed on the table. The cylinder body of each traction cylinder is fixed on one of the layers of the shelf. The telescopic end of the traction cylinder is connected to a traction rod. The end of the traction rod is hinged and fixed to the C-shaped mold box of the corresponding height in the horizontal direction. Each traction cylinder is communicatively connected to the control and display terminal. The displacement sensor is respectively arranged corresponding to each traction rod. When a pulling force is applied to the C-shaped mold box through the traction cylinder, the displacement of the corresponding traction rod is detected.

6. The test method for the mechanical properties of the interface of the reinforcement material according to claim 5, characterized in that: A slot is provided downwardly on the top surface of one side of the end of the limit strip close to the guide area, and a vertical plate in an L-shape in the horizontal plane is inserted into the slot. The vertical plate is flush with the top corner of the C-shaped mold box. When the C-shaped mold boxes are stacked vertically, the C-shaped mold boxes are aligned through the vertical plate, and then hinged and fixed to the traction rod, and then the vertical plate is pulled out.

7. The test method for the mechanical properties of the interface of the reinforcement material according to claim 1, characterized in that: The pressurizing system includes a stand fixed on the table and a pressurizing cylinder installed on the stand. The pressurizing cylinder is arranged vertically downward and the telescopic end of the pressurizing cylinder is detachably connected to a steel plate, and pressure is applied to the soil sample through the steel plate.

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