Rib material pull-out test device and test method using rib material pull-out test device

Abstract

The invention discloses a rib material pull-out test device and a test method using the rib material pull-out test device, and relates to the field of test devices.The rib material pull-out test device comprises a model box defining an installation space, the upper end of the installation space is open to form an assembly opening, and the model box is provided with a first side wall and a second side wall; the multiple first clamps are fixedly arranged on the first side wall, the second side wall is provided with multiple insertion through holes, the multiple insertion through holes are sequentially distributed in the height direction and correspond to the multiple first clamps in a one-to-one mode, the model cover is assembled in the installation space from the assembly opening, the first driving mechanism selectively abuts against the model cover in a pressing mode, and the second installation base is fixedly arranged on the installation base face. The multiple horizontal drawing mechanisms are arranged on the second mounting base, each horizontal drawing mechanism selectively moves in the height direction, and the control device is in communication connection with the first driving mechanism and the horizontal drawing mechanisms. Therefore, the pull-out test can be carried out on the multiple layers of rib materials at the same time so as to accurately measure the acting mechanical characteristics of the multiple layers of rib materials.

Description

Technical Field

[0001] The invention relates to the field of testing devices, and in particular to a reinforcement material pulling testing device and a testing method using the reinforcement material pulling testing device. Background Art

[0002] In the related technology, the existing reinforcement pull-out test equipment can only perform pull-out tests on single-layer reinforcements. The pull-out system can only move on a fixed horizontal plane and cannot perform pull-out tests on multi-layer reinforcements, resulting in a large gap between the test results and the stress characteristics of multi-layer reinforcements in actual engineering. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a reinforcement pull-out test device capable of performing variable speed and passive pull-out tests on multi-layer reinforcements to accurately measure the mechanical properties of the multi-layer reinforcements.

[0004] The invention further proposes a test method using the reinforcement pulling test device.

[0005] According to an embodiment of the present invention, a reinforcement pulling test device comprises: a first mounting seat, which is fixedly mounted on a mounting base surface; a model box, which is fixedly mounted on the mounting base surface, and the model box defines an installation space, the upper end of the installation space is open to form an assembly port, and along a first direction, the model box has a first side wall and a second side wall opposite to each other, and the installation space is located between the first side wall and the second side wall, and a plurality of first clamps are arranged in the installation space, and the plurality of first clamps are fixedly mounted on the first side wall and are arranged in sequence along the height direction of the reinforcement pulling test device, and the second side wall has a plurality of plug-in through holes, and the plurality of plug-in through holes are arranged in sequence along the height direction of the reinforcement pulling test device and correspond one-to-one to the plurality of first clamps, and the first side The invention relates to a model cover having a first driving mechanism and a model cover, wherein the model cover is selectively assembled in the installation space from the assembly port, the first driving mechanism is located above the model cover and is fixedly arranged on the first mounting seat, and the first driving mechanism selectively presses against the model cover; a second mounting seat and a plurality of horizontal pulling mechanisms, wherein the second mounting seat is located on a side of the second side wall away from the first side wall and is fixedly arranged on the mounting base surface, the plurality of horizontal pulling mechanisms are sequentially arranged along the height direction of the reinforcement pulling test device and are arranged on the second mounting seat, and each horizontal pulling mechanism selectively moves along the height direction of the reinforcement pulling test device; and a control device, wherein the control device is communicatively connected with the first driving mechanism and the horizontal pulling mechanism.

[0006] According to the reinforcement pulling test device of the embodiment of the present invention, a plurality of first clamps are provided in the installation space, the plurality of first clamps are fixedly provided on the first side wall and are arranged in sequence along the height direction of the reinforcement pulling test device, the second side wall has a plurality of plug-in through holes, the plurality of plug-in through holes are arranged in sequence along the height direction of the reinforcement pulling test device and correspond one-to-one to the plurality of first clamps, a plurality of horizontal pulling mechanisms are arranged in sequence along the height direction of the reinforcement pulling test device and are provided on the second mounting seat, each horizontal pulling mechanism selectively moves along the height direction of the reinforcement pulling test device, the control device is communicatively connected with the first driving mechanism and the horizontal pulling mechanism, the corresponding reinforcement is pulled by the plurality of horizontal pulling mechanisms, and variable speed and passive pulling tests can be performed on multi-layer reinforcements to accurately measure the mechanical properties of the multi-layer reinforcements, thereby narrowing the gap between the test results and the stress characteristics of the multi-layer reinforcements in actual engineering, and improving the test accuracy of the reinforcement pulling test device.

[0007] According to some embodiments of the present invention, along the second direction, the model box also has a third side wall and a fourth side wall relative to each other, the installation space is located between the third side wall and the fourth side wall, at least one of the third side wall and the fourth side wall is provided with an observation window, and the first direction, the second direction and the height direction of the reinforcement pulling test device are perpendicular to each other.

[0008] According to some embodiments of the present invention, the model box further has a mounting frame, and at least one of the first side wall, the second side wall, the third side wall and the fourth side wall is detachably disposed on the mounting frame.

[0009] According to some embodiments of the present invention, each first clamp is formed with a clamping hole.

[0010] According to some embodiments of the present invention, each plug-in through hole is provided with a sealing member.

[0011] According to some embodiments of the present invention, the first driving mechanism includes: a mounting frame, an actuator, a telescopic column and a loading pad, the mounting frame is fixed to the first mounting seat, the actuator is fixed to the mounting frame, the telescopic column is located between the actuator and the loading pad, the upper end of the telescopic column is connected to the actuator, and the lower end of the telescopic column is fixedly connected to the loading pad.

[0012] According to some embodiments of the present invention, the second mounting seat has a second driving mechanism, and multiple horizontal pulling mechanisms are arranged on the second driving mechanism. The second driving mechanism selectively drives the horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device, and the control device is communicated with the second driving mechanism.

[0013] According to some embodiments of the present invention, each horizontal pulling mechanism includes: a driver, a horizontal stretching rod and a second clamp, the driver is arranged in the second driving mechanism, the second clamp is located on the side of the corresponding driver facing the second side wall, the horizontal stretching rod is a telescopic rod, and the horizontal stretching rod is connected between the driver and the second clamp.

[0014] According to some embodiments of the present invention, the second clamp includes: a first clamping part and a second clamping part, the first clamping part and the horizontal stretching rod are fixedly connected, the first clamping part and the second clamping part are arranged along the height direction of the reinforcement pulling test device, and the second clamping part is detachably provided on the first clamping part to selectively clamp the reinforcement.

[0015] According to some embodiments of the present invention, a surface of the first clamping part facing the second clamping part is formed with one of a boss and a groove, and a surface of the second clamping part facing the first clamping part is formed with the other of the boss and the groove, and the boss and the groove are opposite to each other.

[0016] According to some embodiments of the present invention, the model box is constructed as a rectangle, the length of the model box is L1, the width of the model box is L2, and the relationship is satisfied: 1.5L2≤L1≤2L2.

[0017] According to some embodiments of the present invention, along the first direction, the length of the first clamp is L3, the thickness of the first side wall is L4, satisfying the relationship: 3L4≤L3≤4L4, the length of the plug-in through hole is L5, the thickness of the second side wall is L6, satisfying the relationship: 3L6≤L5≤4L6.

[0018] According to some embodiments of the present invention, the reinforcement pulling test device further includes: a data detection mechanism, which is disposed in the installation space and is communicatively connected to the control device, and is used to detect data information of the interaction between the filler layer and the reinforcement.

[0019] According to a test method using a reinforcement pull-out test device according to an embodiment of the present invention, the reinforcement pull-out test device is the reinforcement pull-out test device described above, and the test method includes:

[0020] Install the reinforcement pull-out test device on the installation base surface of the test site;

[0021] Multiple packing layers and multiple reinforcements are laid out in the installation space in sequence along the height direction of the reinforcement pull-out test device, a reinforcement is arranged between two adjacent packing layers, and the topmost and bottommost layers of the installation space are both packing layers, and the reinforcements are passed through the corresponding plug-in through holes;

[0022] Control the horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device so that the horizontal pulling mechanism and the corresponding reinforcement are at the same height, and control the horizontal pulling mechanism to clamp the corresponding reinforcement;

[0023] Assemble the model cover from the assembly opening above the uppermost filler layer in the installation space;

[0024] Controlling the first driving mechanism to apply pressure to the model cover along the height direction of the reinforcement pulling test device, so that the pressure applied by the first driving mechanism to the model cover reaches a target pressure;

[0025] Controlling the horizontal pulling mechanism to pull the corresponding reinforcement material according to a preset pulling force and a preset moving speed, so as to pull the corresponding reinforcement material out of the installation space;

[0026] Obtain the horizontal pulling displacement x1(m) of the end of the corresponding reinforcement away from the reinforcement pulling test device and the horizontal pulling displacement x2(m) of the end close to the reinforcement pulling test device, obtain the horizontal pulling force T(kN) applied by the horizontal pulling mechanism on the corresponding reinforcement, and obtain the first driving mechanism to apply multiple different pressures P(kN) to the model cover;

[0027] According to x2(m), T(kN) and P(kN), the normal stress σ(kPa), shear stress τ(kPa), and pull-out friction coefficient μ on the corresponding reinforcement are determined, and the friction strength parameters cohesion Ci and friction angle θi on the corresponding reinforcement are determined.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a schematic structural diagram of a reinforcement material pulling test device according to an embodiment of the present invention;

[0031] Figure 2 It is a structural schematic diagram of a model box according to an embodiment of the present invention;

[0032] Figure 3 is an exploded schematic diagram of a second clamp according to an embodiment of the present invention;

[0033] Figure 4 It is a flow chart of a test method using a reinforcement material pulling test device according to an embodiment of the present invention.

[0034] Reference numerals:

[0035] Reinforcement pull-out test device 100;

[0036] A first mounting seat 10;

[0037] Mounting base 20;

[0038] Model box 30;

[0039] Installation space 31; assembly opening 311;

[0040] First side wall 32; first clamp 321; clamping hole 322;

[0041] Second side wall 33; plug-in through hole 331; sealing member 332;

[0042] A third side wall 34; a fourth side wall 35; an observation window 36;

[0043] Mounting frame 37; mounting column 371; mounting base plate 372;

[0044] A first driving mechanism 40;

[0045] Mounting frame 41; horizontal steel beam 411; gantry frame 412;

[0046] Actuator 42; telescopic column 43; loading pad 44;

[0047] Model cover 50;

[0048] Second mounting seat 60; second driving mechanism 61; slide rail 62; ball bearing 63;

[0049] Horizontal pulling mechanism 70; driver 71; horizontal stretching rod 72;

[0050] The second clamp 73; the first clamping portion 731; the second clamping portion 732;

[0051] Control device 80;

[0052] Filling layer 1; reinforcement material 2; DETAILED DESCRIPTION

[0053] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] Reference below Figure 1-Figure 4 A reinforcement material pulling test device 100 and a test method using the reinforcement material pulling test device 100 according to an embodiment of the present invention are described.

[0055] like Figure 1-3As shown, according to an embodiment of the present invention, the reinforcement pulling test device 100 includes: a first mounting seat 10, which is fixedly mounted on the mounting base surface 20; a model box 30, which is fixedly mounted on the mounting base surface 20, and the model box 30 defines an installation space 31, and the upper end of the installation space 31 is open to form an assembly port 311. Along a first direction, the model box 30 has a first side wall 32 and a second side wall 33 opposite to each other, and the installation space 31 is located between the first side wall 32 and the second side wall 33. A plurality of first clamps 321 are arranged in the installation space 31, and the plurality of first clamps 321 are fixedly mounted on the first side wall 32 and are arranged in sequence along the height direction of the reinforcement pulling test device 100. The second side wall 33 has a plurality of plug-in through holes 331, and the plurality of plug-in through holes 331 are arranged in sequence along the height direction of the reinforcement pulling test device 100 and correspond one-to-one to the plurality of first clamps 321. The first direction is perpendicular to the height direction of the reinforcement pulling test device 100. A first driving mechanism 40 and a model cover 50, the model cover 50 is selectively assembled in the installation space 31 from the assembly opening 311, the first driving mechanism 40 is located above the model cover 50 and fixed to the first mounting seat 10, and the first driving mechanism 40 selectively presses against the model cover 50. A second mounting seat 60 and a plurality of horizontal pulling mechanisms 70, the second mounting seat 60 is located on the side of the second side wall 33 away from the first side wall 32 and fixed to the mounting base 20, the plurality of horizontal pulling mechanisms 70 are sequentially arranged along the height direction of the reinforcement pulling test device 100 and are arranged on the second mounting seat 60, and each horizontal pulling mechanism 70 selectively moves along the height direction of the reinforcement pulling test device 100. A control device 80, the control device 80 is in communication connection with both the first driving mechanism 40 and the horizontal pulling mechanism 70.

[0056] The first direction can be Figure 1 and Figure 2 The X direction in the first direction is perpendicular to the height direction of the reinforcement pull-out test device 100. The first mounting seat 10 can be constructed as a structure such as a steel frame or a steel plate, and the mounting base 20 is a rigid ground. The first mounting seat 10 is fixed to the mounting base 20. For example, the first mounting seat 10 and the mounting base 20 can be fixedly connected by bolts, or the first mounting seat 10 and the mounting base 20 can be anchored, but the present invention is not limited thereto. The first mounting seat 10 and the mounting base 20 can also be fixedly connected by other means, as long as the first mounting seat 10 is fixedly connected to the mounting base 20. This application is described by taking the example of the first mounting seat 10 and the mounting base 20 being fixedly connected by bolts. The bolt connection method is convenient for disassembly and maintenance, thereby reducing the assembly complexity and maintenance cost of the reinforcement pull-out test device 100.

[0057] The model box 30 is fixedly arranged on the installation base surface 20. For example, the model box 30 and the installation base surface 20 can be fixedly connected by bolts, or the model box 30 and the installation base surface 20 can be anchored, but the present invention is not limited thereto. The model box 30 and the installation base surface 20 can also be fixedly connected by other means, as long as the model box 30 is fixedly arranged on the installation base surface 20. The model box 30 defines an installation space 31 for filling the packing layer 1. The packing layer 1 can be sand, gravel, etc. The upper end of the installation space 31 is open to form an assembly port 311, and the packing layer 1 can be filled into the installation space 31 through the assembly port 311.

[0058] Along the first direction, the model box 30 has a first side wall 32 and a second side wall 33 opposite to each other, and the installation space 31 is located between the first side wall 32 and the second side wall 33. A plurality of first fixtures 321 are provided in the installation space 31. For example, three, four, five, six, etc., first fixtures 321 may be provided in the installation space 31, but the present invention is not limited thereto. Other numbers of first fixtures 321 may also be provided in the installation space 31, as long as a plurality of first fixtures 321 are provided in the installation space 31. The plurality of first fixtures 321 are all fixedly provided on the first side wall 32 and are arranged in sequence along the height direction of the reinforcement pulling test device 100. The first fixture 321 may be integrally formed with the first side wall 32, or the first fixture 321 and the first side wall 32 may be fixedly connected by welding, but the present invention is not limited thereto. The first fixture 321 and the first side wall 32 may also be fixedly connected by other means, as long as a plurality of first fixtures 321 are all fixedly provided on the first side wall 32. Multiple first clamps 321 are arranged in sequence along the height direction of the reinforcement pulling test device 100, and the spacing between each two adjacent first clamps 321 can be equal. The spacing between two adjacent first clamps 321 can be reasonably set according to actual conditions. As an example of the present application, the spacing between two adjacent first clamps 321 can be 9cm-11cm. For example, the spacing between two adjacent first clamps 321 can be 9cm, 10cm, 11cm and other values.

[0059] The second side wall 33 has a plurality of plug-in through holes 331, for example, the second side wall 33 may have three, four, five, six or other numbers of plug-in through holes 331, but the present invention is not limited thereto, and the second side wall 33 may also have other numbers of plug-in through holes 331, as long as the second side wall 33 has a plurality of plug-in through holes 331. The reinforcement 2 may be inserted into the installation space 31 through the plug-in through holes 331, and the plurality of plug-in through holes 331 are sequentially arranged along the height direction of the reinforcement pulling test device 100 and correspond one-to-one with the plurality of first clamps 321, which can ensure the precise connection between the first clamps 321 and the reinforcement 2, thereby avoiding inaccurate tension transmission or test failure caused by position deviation.

[0060] The first driving mechanism 40 can be a motor, a hydraulic driving mechanism, a pneumatic driving mechanism or the like. The model cover 50 is selectively assembled in the installation space 31 from the assembly port 311. When it is necessary to fill the packing layer 1 into the installation space 31, the model cover 50 is not assembled in the installation space 31, so that the assembly port 311 of the installation space 31 is open, and the packing layer 1 can be filled into the installation space 31 from the assembly port 311. After the packing layer 1 is filled, the model cover 50 is assembled in the installation space 31 from the assembly port 311 to seal the installation space 31 to prevent leakage of the packing layer 1.

[0061] The first driving mechanism 40 is located above the model cover 50 and fixed to the first mounting seat 10, so that the first driving mechanism 40 can directly apply downward pressure to the model cover 50, thereby realizing the pressing or releasing operation of the first driving mechanism 40 on the model cover 50. The first driving mechanism 40 and the first mounting seat 10 can be fixedly connected by bolts, or the first driving mechanism 40 and the first mounting seat 10 can be fixedly connected by welding, but the present invention is not limited thereto. The first driving mechanism 40 and the first mounting seat 10 can also be fixedly connected by other means, as long as the first driving mechanism 40 is located above the model cover 50 and fixed to the first mounting seat 10. The first driving mechanism 40 selectively presses against the model cover 50. When it is necessary to fill the installation space 31 with stuffing or to disassemble the model box 30, the first driving mechanism 40 does not press against the model cover 50. When it is necessary to apply downward pressure to the model cover 50, the first driving mechanism 40 presses against the model cover 50. By pressing the first driving mechanism 40 against the model cover 50, vertical pressure can be applied to the stuffing 1 and the reinforcement 2.

[0062] The second mounting seat 60 is located on the side of the second side wall 33 away from the first side wall 32 and is fixed to the mounting base surface 20. For example, the second mounting seat 60 and the mounting base surface 20 can be fixedly connected by bolts, or the second mounting seat 60 and the mounting base surface 20 can be anchored, but the present invention is not limited to this. The second mounting seat 60 and the mounting base surface 20 can also be fixedly connected by other means, as long as the second mounting seat 60 is located on the side of the second side wall 33 away from the first side wall 32 and is fixed to the mounting base surface 20.

[0063] A plurality of horizontal pulling mechanisms 70 are arranged in sequence along the height direction of the reinforcement pulling test device 100 and are provided on the second mounting seat 60. For example, the horizontal pulling mechanism 70 and the second mounting seat 60 can be fixedly connected by bolts, or the horizontal pulling mechanism 70 and the second mounting seat 60 can be fixedly connected by welding, but the present invention is not limited thereto. The horizontal pulling mechanism 70 and the second mounting seat 60 can also be fixedly connected by other means, as long as the plurality of horizontal pulling mechanisms 70 are arranged in sequence along the height direction of the reinforcement pulling test device 100 and are provided on the second mounting seat 60.

[0064] Each horizontal pulling mechanism 70 selectively moves along the height direction of the reinforcement pulling test device 100. The horizontal pulling mechanism 70 can be adjusted in the height direction according to the pulling test requirements, so that each horizontal pulling mechanism 70 is located at the height of the corresponding plug-in through hole 331, thereby enabling multiple horizontal pulling mechanisms 70 to horizontally pull the corresponding reinforcement 2 respectively, so as to accurately measure the mechanical properties of the multi-layer reinforcement 2.

[0065] The control device 80 may be an electronic and computer control device 80, or the control device 80 may be an electrical control device 80, and the control device 80 is connected to the first drive mechanism 40 and the horizontal pulling mechanism 70 through communication. For example, the control device 80 may be connected to the first drive mechanism 40 and the horizontal pulling mechanism 70 through a wire harness, or the control device 80 may be connected to the first drive mechanism 40 and the horizontal pulling mechanism 70 through wireless communication. As long as the control device 80 is connected to the first drive mechanism 40 and the horizontal pulling mechanism 70 through communication, the control device 80 may control the first drive mechanism 40 and the horizontal pulling mechanism 70 to work, so that the reinforcement pulling test device 100 may realize highly automated and precise motion control, which not only improves the test efficiency, but also reduces the errors and risks caused by human operation, thereby improving the accuracy of the test results of the reinforcement pulling test device 100.

[0066] Further, the pull-out test process can be: the first mounting seat 10, the model box 30, and the second mounting seat 60 are installed on the mounting base 20, the first driving mechanism 40 is installed on the first mounting seat 10, and the packing layer 1 is filled into the mounting space 31 of the model box 30. After filling a layer of packing layer 1, a layer of reinforcement material 2 is laid. The laying position of the reinforcement material 2 can be selected according to the test requirements. The reinforcement material 2 extends into the mounting space 31 through the plug-in through hole 331, and the reinforcement material 2 that needs to be subjected to the passive pull-out test extends into the first clamp 321 toward one end of the first clamp 321 and is clamped to meet the passive pull-out test requirements. The packing layer 1 and the reinforcement material 2 are laid together. After the reinforcement 2 is laid, the horizontal pulling mechanism 70 corresponding to the laid reinforcement 2 moves along the height direction of the reinforcement pulling test device 100, so that the corresponding horizontal pulling mechanism 70 and the corresponding reinforcement 2 are at the same height, and the horizontal pulling mechanism 70 clamps the corresponding reinforcement 2, and the model cover 50 is assembled from the assembly port 311 to the installation space 31 to seal the installation space 31, and the control device 80 can control the first drive mechanism 40 to press against the model cover 50, thereby being able to give vertical pressure to the filler and reinforcement 2, and then the control device 80 can control multiple horizontal pulling mechanisms 70 to pull the corresponding reinforcement 2 respectively, so as to realize the pulling movement of multiple layers of reinforcement 2. After the test is completed, the horizontal pulling force is canceled, and the reinforcement 2 is separated from the horizontal pulling mechanism 70, the vertical pressure is canceled and the first drive mechanism 40 is separated from the model cover 50, and finally the model box 30 is dismantled, the filler layer 1 and reinforcement 2 are removed, and the test site is cleaned up.

[0067] Therefore, the reinforcement pull-out test device 100 of the present application can perform variable speed and passive pull-out tests on the multi-layer reinforcement 2 to accurately measure the mechanical properties of the multi-layer reinforcement 2, thereby narrowing the gap between the test results and the stress characteristics of the multi-layer reinforcement 2 in actual engineering.

[0068] According to the reinforcement pulling test device 100 of the embodiment of the present invention, a plurality of first clamps 321 are provided in the installation space 31, the plurality of first clamps 321 are fixedly arranged on the first side wall 32 and arranged in sequence along the height direction of the reinforcement pulling test device 100, the second side wall 33 has a plurality of plug-in through holes 331, the plurality of plug-in through holes 331 are arranged in sequence along the height direction of the reinforcement pulling test device 100 and correspond one to one with the plurality of first clamps 321, and a plurality of horizontal pulling mechanisms 70 are arranged in sequence along the height direction of the reinforcement pulling test device 100 and provided on the first side wall 32. Two mounting seats 60, each horizontal pulling mechanism 70 selectively moves along the height direction of the reinforcement pulling test device 100, the control device 80 is communicated with the first driving mechanism 40 and the horizontal pulling mechanism 70, and the corresponding reinforcement 2 is pulled by multiple horizontal pulling mechanisms 70, and variable speed and passive pulling tests can be performed on the multi-layer reinforcement 2 to accurately measure the mechanical properties of the multi-layer reinforcement 2, thereby narrowing the gap between the test results and the stress characteristics of the multi-layer reinforcement 2 in actual engineering, and improving the test accuracy of the reinforcement pulling test device 100.

[0069] According to some embodiments of the present invention, Figure 2 As shown, along the second direction, the model box 30 also has a third side wall 34 and a fourth side wall 35 opposite to each other, the installation space 31 is located between the third side wall 34 and the fourth side wall 35, at least one of the third side wall 34 and the fourth side wall 35 is provided with an observation window 36, and the first direction, the second direction and the height direction of the reinforcement pulling test device 100 are perpendicular to each other.

[0070] Among them, Figure 2 As shown, the first direction is Figure 2 The first direction is the X direction in the figure, and the second direction can be the Y direction in the figure. The first direction, the second direction and the height direction of the reinforcement pulling test device 100 are perpendicular to each other. The model box 30 also has a third side wall 34 and a fourth side wall 35 opposite to each other. The installation space 31 is located between the third side wall 34 and the fourth side wall 35. The installation space 31 is also located between the first side wall 32 and the second side wall 33. The first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 jointly define the installation space 31.

[0071] At least one of the third side wall 34 and the fourth side wall 35 is provided with an observation window 36, for example: the third side wall 34 is provided with an observation window 36, or the fourth side wall 35 is provided with an observation window 36, or both the third side wall 34 and the fourth side wall 35 are provided with an observation window 36, as long as at least one of the third side wall 34 and the fourth side wall 35 is provided with an observation window 36. The present application takes the example that both the third side wall 34 and the fourth side wall 35 are provided with an observation window 36 as an example for explanation. By providing both the third side wall 34 and the fourth side wall 35 with observation windows 36, the test personnel can monitor the pulling test conditions of the reinforcement material 2 in the installation space 31 in real time from multiple directions and angles, thereby enabling the test personnel to obtain a more comprehensive and three-dimensional test perspective, so as to more accurately judge the test status, reduce blind spots, and help improve the accuracy and reliability of the test results.

[0072] It can be explained that the observation window 36 can be made of glass, plexiglass (acrylic), PC (polycarbonate) and other materials. The present application takes the observation window 36 made of transparent plexiglass as an example. Plexiglas has the advantages of high transparency, strong impact resistance, light weight and easy installation. It can not only clearly display the test conditions in the installation space 31 and ensure that the test personnel obtain accurate visual information, but it is also not easy to break, thereby reducing safety hazards during the test and facilitating the assembly of the model box 30.

[0073] According to some embodiments of the present invention, Figure 2 As shown, the model box 30 may further include a mounting frame 37 , and at least one of the first side wall 32 , the second side wall 33 , the third side wall 34 and the fourth side wall 35 may be detachably disposed on the mounting frame 37 .

[0074] Among them, the model box 30 can also have a mounting frame 37, and the mounting frame 37 can include a mounting base plate 372 and a mounting column 371, and the mounting base plate 372 and the mounting column 371 are fixedly connected. For example, the mounting column 371 and the mounting base plate 372 can be integrally formed, or the mounting column 371 and the mounting base plate 372 can also be fixedly connected by welding, but the present invention is not limited to this. The mounting column 371 and the mounting base plate 372 can also be fixedly connected by other means, as long as the mounting column 371 and the mounting base plate 372 are fixedly connected.

[0075] And the mounting frame 37 may include a plurality of mounting posts 371, for example: the mounting frame 37 may include two, three, four, etc. mounting posts 371, but the present invention is not limited thereto, the mounting frame 37 may also include other numbers of mounting posts 371, as long as the mounting frame 37 may include a plurality of mounting posts 371. The present application takes the mounting frame 37 including four mounting posts 371 as an example for explanation, the mounting base plate 372 may be constructed as a quadrilateral plate body, for example: the mounting base plate 372 may be constructed as a rectangular plate body, the mounting base plate 372 is laid on the mounting base surface 20, and the mounting base plate 372 is fixedly connected to the mounting base surface 20, the four mounting posts 371 may be evenly distributed on the upper surface of the mounting base plate 372, and the axial direction of the mounting posts 371 is perpendicular to the upper surface of the mounting base plate 372, so that the mounting posts 371 and the mounting base plate 372 together form a stable and easy-to-install mounting frame 37.

[0076] At least one of the first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 is removably provided on the mounting frame 37, for example: one of the first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 is removably provided on the mounting frame 37, or two of the first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 are removably provided on the mounting frame 37, or three of the first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 are removably provided on the mounting frame 37, or the first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 are all removably provided on the mounting frame 37, as long as at least one of the first side wall 32, the second side wall 33, the third side wall 34 and the fourth side wall 35 is removably provided on the mounting frame 37. The present application takes the first side wall 32 and the second side wall 33 as an example in which they are detachably arranged on the mounting frame 37. With such an arrangement, when assembling and disassembling the model box 30 each time, it is only necessary to disassemble and assemble the first side wall 32 and the second side wall 33, and there is no need to disassemble and assemble the third side wall 34 and the fourth side wall 35 multiple times, thereby reducing the number of times the observation window 36 is disassembled and assembled, thereby reducing the risk of damage to the observation window 36 during the disassembly and assembly process, and also reducing the disassembly and assembly steps of the model box 30, thereby improving the stability and durability of the model box 30. In addition, when the first clamp 321 on the first side wall 32 and the plug-in through hole 331 on the second side wall 33 are damaged, the first side wall 32 and the second side wall 33 can be disassembled for repair or replacement without replacing the entire model box 30, thereby reducing the repair cost and repair time, and different first side walls 32 and second side walls 33 can be replaced according to actual conditions to meet different experimental needs.

[0077] Further, the mounting frame 37 and the third side wall 34 and the fourth side wall 35 can be fixedly connected by welding, or the mounting frame 37, the third side wall 34 and the fourth side wall 35 are integrally formed, so that the third side wall 34 and the fourth side wall 35 are non-detachable relative to the mounting frame 37. The first side wall 32 and the second side wall 33 can be respectively inserted between the corresponding two adjacent mounting posts 371, and the bottom walls of the first side wall 32 and the second side wall 33 facing the mounting bottom plate 372 are respectively in contact with the mounting bottom plate 372. Specifically, the size of the first side wall 32 is adapted to the distance size between the corresponding two mounting posts 371, and the size of the second side wall 33 is adapted to the distance size between the corresponding two mounting posts 371, so that the first side wall 32 and the second side wall 33 can be respectively smoothly inserted between the corresponding two adjacent mounting posts 371, and the first side wall 32 and the second side wall 33 are respectively firmly stuck between the corresponding two adjacent mounting posts 371. Furthermore, after the first side wall 32 and the second side wall 33 are respectively inserted between the corresponding two adjacent mounting columns 371, the first side wall 32 and the corresponding two mounting columns 371 can be fixedly connected by detachable connecting parts such as bolts and rivets, and the second side wall 33 and the corresponding two mounting columns 371 can be fixedly connected by detachable connecting parts such as bolts and rivets, thereby making the first side wall 32 and the second side wall 33 detachable relative to the mounting frame 37.

[0078] According to some embodiments of the present invention, Figure 2 As shown, each first clamp 321 may be formed with a clamping hole 322 .

[0079] Among them, each first clamp 321 can be constructed by two opposing and spaced-apart plates, both of which are fixedly connected to the first side wall 32, and the two plates are opposing and spaced-apart to define a clamping hole 322, and the shape of the clamping hole 322 is adapted to the shape of the reinforcement 2 so that the reinforcement 2 can be inserted into the clamping hole 322, thereby enabling the first clamp 321 to clamp the reinforcement 2.

[0080] Specifically, when a passive pull-out test is required on the reinforcement 2, one end of the reinforcement 2 close to the first side wall 32 can be inserted into the clamping hole 322, and bolts are passed through the two plates and locked to clamp the reinforcement 2, so that the reinforcement pull-out test device 100 can have the function of passive pull-out test, thereby improving the functionality of the reinforcement pull-out test device 100.

[0081] According to some embodiments of the present invention, Figure 1 As shown, each plug-in through hole 331 may be provided with a sealing member 332 .

[0082] Among them, the seal 332 can be a rubber sealing strip, a plastic sealing strip, etc. By providing a seal 332 in each plug-in hole 331, the plug-in hole 331 can be sealed after the reinforcement 2 is inserted into the plug-in hole 331, thereby preventing the filler in the installation space 31 from leaking when the reinforcement 2 is pulled out of the plug-in hole 331, and reducing the stress concentration phenomenon at the plug-in hole 331 during the pulling process, thereby improving the stability and reliability of the reinforcement pulling test device 100, and also improving the accuracy of the pulling test results.

[0083] According to some embodiments of the present invention, Figure 1 As shown, the first driving mechanism 40 may include: a mounting frame 41, an actuator 42, a telescopic column 43 and a loading pad 44, the mounting frame 41 is fixed to the first mounting seat 10, the actuator 42 is fixed to the mounting frame 41, the telescopic column 43 is located between the actuator 42 and the loading pad 44, the upper end of the telescopic column 43 is connected to the actuator 42, and the lower end of the telescopic column 43 is fixedly connected to the loading pad 44.

[0084] Among them, the mounting frame 41 may include a horizontal steel beam 411 and a gantry 412, and the mounting frame 41 is fixedly arranged on the first mounting seat 10, and the horizontal steel beam 411 and the gantry 412 are fixedly connected, for example: the horizontal steel beam 411 and the gantry 412 can be fixedly connected by welding, or the horizontal steel beam 411 and the gantry 412 can be fixedly connected by bolts, but the present invention is not limited to this, the horizontal steel beam 411 and the gantry 412 can also be fixedly connected by other means, as long as the horizontal steel beam 411 and the gantry 412 are fixedly connected. The gantry 412 in the mounting frame 41 can be fixedly mounted on the first mounting seat 10. As an example of the present application, the gantry 412 and the first mounting seat 10 can be fixedly connected by bolts. The bolt connection not only has high connection firmness and reliability, but also can ensure the connection reliability between the gantry 412 and the first mounting seat 10. The bolt connection has good applicability and flexibility, and can adapt to the connection requirements of the gantry 412 and the first mounting seat 10 of different specifications and models, and can also facilitate the adjustment of the installation position of the gantry 412, and then the position of the gantry 412 can be adjusted according to actual conditions. However, the present invention is not limited to this. The gantry 412 and the first mounting seat 10 can also be fixedly connected by other methods, for example: the gantry 412 and the first mounting seat 10 can also be fixedly connected by welding, riveting, etc. The connection method between the gantry 412 and the first mounting seat 10 can be reasonably selected according to actual needs.

[0085] The actuator 42 is fixed to the mounting frame 41. The actuator 42 can be fixed to the horizontal steel beam 411 in the mounting frame 41. For example, the actuator 42 and the horizontal steel beam 411 can be fixedly connected by welding, or the actuator 42 and the horizontal steel beam 411 can be fixedly connected by bolts, but the present invention is not limited thereto. The actuator 42 and the horizontal steel beam 411 can also be fixedly connected by other means, as long as the actuator 42 is fixed to the mounting frame 41. It can be explained that the actuator 42 can be a hydraulic actuator 42, a pneumatic actuator 42, a magnetostrictive actuator 42, etc., and can be reasonably selected according to actual needs, and no specific limitation is made here.

[0086] The telescopic column 43 is located between the actuator 42 and the loading pad 44, and the upper end of the telescopic column 43 is connected to the actuator 42. For example, the upper end of the telescopic column 43 and the actuator 42 may be connected by a thread, or the upper end of the telescopic column 43 and the actuator 42 may be connected by a connecting rod, but the present invention is not limited thereto. The upper end of the telescopic column 43 and the actuator 42 may also be connected by other means, as long as the upper end of the telescopic column 43 and the actuator 42 are connected.

[0087] The lower end of the telescopic column 43 is fixedly connected to the loading pad 44. For example, the lower end of the telescopic column 43 and the loading pad 44 can be fixedly connected by bonding, or the lower end of the telescopic column 43 and the loading pad 44 can be fixedly connected by bolts, but the present invention is not limited to this. The lower end of the telescopic column 43 and the loading pad 44 can also be fixedly connected by other means, as long as the lower end of the telescopic column 43 and the loading pad 44 are fixedly connected.

[0088] Therefore, by driving the telescopic column 43 to perform telescopic movement through the actuator 42, the loading pad 44 can selectively press against the model cover 50, thereby giving the model cover 50 a vertical pressure, and the loading pad 44 can evenly transfer the force generated by the actuator 42 to the model cover 50, thereby evenly transferring the vertical pressure to the reinforcement 2 in the installation space 31, so as to meet the experimental requirements of the pull-out test.

[0089] It can be explained that the loading pad 44 and the model cover 50 can be made of materials such as rubber, silicone, and wood, and can be reasonably selected according to actual conditions. This application takes the loading pad 44 and the model cover 50 both made of wood as an example. By setting the loading pad 44 and the model cover 50, it can be ensured that the vertical pressure is evenly transmitted to the reinforcement 2 to avoid local stress concentration, thereby more accurately simulating the stress condition of the reinforcement 2 under actual working conditions and improving the accuracy and reliability of the test.

[0090] According to some embodiments of the present invention, Figure 1As shown, the second mounting seat 60 can have a second driving mechanism 61, and multiple horizontal pulling mechanisms 70 are arranged on the second driving mechanism 61. The second driving mechanism 61 selectively drives the horizontal pulling mechanism 70 to move along the height direction of the reinforcement pulling test device 100, and the control device 80 is communicated with the second driving mechanism 61.

[0091] The second mounting seat 60 may have a second driving mechanism 61, and the second driving mechanism 61 may be a motor, a ball screw driving mechanism, etc. A plurality of horizontal pulling mechanisms 70 are provided on the second driving mechanism 61, for example, the plurality of horizontal pulling mechanisms 70 and the second driving mechanism 61 may be fixedly connected by bolts, or the plurality of horizontal pulling mechanisms 70 and the second driving mechanism 61 may be fixedly connected by welding, but the present invention is not limited thereto, and the plurality of horizontal pulling mechanisms 70 and the second driving mechanism 61 may also be fixedly connected by other means, as long as the plurality of horizontal pulling mechanisms 70 are all provided on the second driving mechanism 61.

[0092] The second driving mechanism 61 selectively drives the horizontal pulling mechanism 70 to move along the height direction of the reinforcement pulling test device 100. Specifically, before conducting the pulling test, the second driving mechanism 61 drives the horizontal pulling mechanism 70 to move along the height direction of the reinforcement pulling test device 100, so that the horizontal pulling mechanism 70 moves to the height of the plug-in hole 331 corresponding to the corresponding reinforcement 2, thereby enabling the horizontal pulling mechanism 70 to clamp the corresponding reinforcement 2. When conducting the pulling test, the second driving mechanism 61 does not drive the horizontal pulling mechanism 70 to move along the height direction of the reinforcement pulling test device 100, so that the corresponding horizontal pulling mechanism 70 is fixed at the height of the corresponding plug-in hole 331, so that the pulling test can proceed normally.

[0093] Therefore, by selectively driving the horizontal pulling mechanism 70 to move along the height direction of the reinforcement pulling test device 100 through the second driving mechanism 61, multiple horizontal pulling mechanisms 70 can be driven to be at different heights, so that the reinforcement pulling test device 100 can meet the requirements of performing pulling experiments on multiple groups of reinforcements 2 at the same time, so as to accurately measure the mechanical properties of the multi-layer reinforcements 2, thereby narrowing the gap between the test results and the stress characteristics of the multi-layer reinforcements 2 in actual engineering.

[0094] The control device 80 is connected in communication with the second drive mechanism 61. For example, the control device 80 and the second drive mechanism 61 can be connected in communication with each other through a wire harness, or the control device 80 and the second drive mechanism 61 can be connected in wireless communication, as long as the control device 80 and the second drive mechanism 61 are connected in communication. The control device 80 is connected in communication with the second drive mechanism 61, and the second drive mechanism 61 can be selectively started or stopped by the control device 80 to control the motion state of the horizontal pulling mechanism 70, thereby reducing manual intervention and waiting time, improving the efficiency and speed of the test, and also improving the accuracy and controllability, safety and stability of the test.

[0095] According to some embodiments of the present invention, Figure 1 As shown, each horizontal pulling mechanism 70 includes: a driver 71, a horizontal stretching rod 72 and a second clamp 73. The driver 71 is arranged on the second driving mechanism 61. The second clamp 73 is located on the side of the corresponding driver 71 facing the second side wall 33. The horizontal stretching rod 72 is a telescopic rod, and the horizontal stretching rod 72 is connected between the driver 71 and the second clamp 73.

[0096] Among them, the driver 71 is arranged on the second driving mechanism 61, for example: the driver 71 and the second driving mechanism 61 can be connected by a slide rail 62, a slider, or the driver 71 and the second driving mechanism 61 can be connected by a ball screw, but the present invention is not limited to this, the driver 71 and the second driving mechanism 61 can also be connected by other means, as long as the driver 71 is arranged on the second driving mechanism 61. As an example of the present application, the driver 71 and the second driving mechanism 61 can be connected by a slide rail 62 and a slider. Specifically, the second driving mechanism 61 can be provided with a slide rail 62 and a ball 63, the ball 63 is arranged in the slide rail 62, the slide rail 62 extends along the height direction of the reinforcement pulling test device 100, the driver 71 can be provided with a slider, the slider is sleeved on the slide rail 62, and the slider can be driven to move along the height direction of the reinforcement pulling test device 100 by the rolling of the ball 63, so as to achieve the effect that the second driving mechanism 61 selectively drives the horizontal pulling mechanism 70 to move along the height direction of the reinforcement pulling test device 100.

[0097] The second clamp 73 is located on the side of the corresponding driver 71 facing the second side wall 33. The horizontal stretch rod 72 is a telescopic rod. The horizontal stretch rod 72 is connected between the driver 71 and the second clamp 73. The horizontal stretch rod 72 and the driver 71 and the second clamp 73 can be fixedly connected by bolts, or the horizontal stretch rod 72 and the driver 71 and the second clamp 73 can be fixedly connected by welding. However, the present invention is not limited to this. The horizontal stretch rod 72 and the driver 71 and the second clamp 73 can also be fixedly connected by other means, as long as the horizontal stretch rod 72 is connected between the driver 71 and the second clamp 73.

[0098] Therefore, the driver 71 can drive the horizontal stretching rod 72 to perform telescopic movement. The telescopic movement of the horizontal stretching rod 72 can make the second clamp 73 move along the pulling direction, thereby realizing the pulling of the reinforcement 2 to test the mechanical properties of the reinforcement 2, providing strong support for the performance testing and engineering application of the reinforcement 2.

[0099] According to some embodiments of the present invention, Figure 3 As shown, the second clamp 73 includes: a first clamping portion 731 and a second clamping portion 732, the first clamping portion 731 and the horizontal stretching rod 72 are fixedly connected, the first clamping portion 731 and the second clamping portion 732 are arranged along the height direction of the reinforcement pulling test device 100, and the second clamping portion 732 is detachably provided on the first clamping portion 731 to selectively clamp the reinforcement 2.

[0100] Among them, the first clamping portion 731 and the horizontal stretching rod 72 are fixedly connected. For example, the first clamping portion 731 and the horizontal stretching rod 72 can be fixedly connected by welding, or the first clamping portion 731 and the horizontal stretching rod 72 can be fixedly connected by bolts, but the present invention is not limited to this. The first clamping portion 731 and the horizontal stretching rod 72 can also be fixedly connected by other means, as long as the first clamping portion 731 and the horizontal stretching rod 72 are fixedly connected.

[0101] The first clamping part 731 and the second clamping part 732 are arranged along the height direction of the reinforcement pulling test device 100, and the first clamping part 731 is located below the second clamping part 732, and the second clamping part 732 is detachably provided on the first clamping part 731 to selectively clamp the reinforcement 2. Specifically, the first clamping part 731 and the second clamping part 732 can be fixedly connected by bolts, or the first clamping part 731 and the second clamping part 732 can be connected by fixing pins, but the present invention is not limited thereto, and the first clamping part 731 and the second clamping part 732 can be fixedly connected by other means, as long as the second clamping part 732 is detachably provided on the first clamping part 731. When the first clamping part 731 and the second clamping part 732 are fixedly connected, the reinforcement 2 is clamped between the first clamping part 731 and the second clamping part 732, and after the second clamping part 732 is removed from the first clamping part 731, the reinforcement 2 can be removed from the second clamp 73. With such arrangement, when replacing the reinforcing bar 2, it is only necessary to simply disassemble and reinstall the second clamping portion 732 without disassembling the entire second clamp 73, which significantly shortens the test preparation time and thus can improve the test efficiency.

[0102] Thus, the first clamping part 731 and the second clamping part 732 clamp the reinforcement 2, and the first clamping part 731 and the horizontal stretching rod 72 are fixedly connected. By controlling the pulling movement of the horizontal stretching rod 72, the pulling movement of the reinforcement 2 can be realized, thereby meeting the test requirements of the reinforcement 2 pulling test device.

[0103] According to some embodiments of the present invention, Figure 3 As shown, the surface of the first clamping portion 731 facing the second clamping portion 732 is formed with one of a boss and a groove, and the surface of the second clamping portion 732 facing the first clamping portion 731 is formed with the other of the boss and the groove, and the boss and the groove are opposite to each other.

[0104] Among them, one of the bosses and grooves is formed on the surface of the first clamping part 731 facing the second clamping part 732, and the other of the bosses and grooves is formed on the surface of the second clamping part 732 facing the first clamping part 731. For example: the surface of the first clamping part 731 facing the second clamping part 732 is formed with a boss, and the surface of the second clamping part 732 facing the first clamping part 731 is formed with a groove, or the surface of the first clamping part 731 facing the second clamping part 732 is formed with a groove, and the surface of the second clamping part 732 facing the first clamping part 731 is formed with a boss. As long as the surface of the first clamping part 731 facing the second clamping part 732 is formed with one of the bosses and grooves, and the surface of the second clamping part 732 facing the first clamping part 731 is formed with the other of the bosses and grooves, no specific limitation is made here.

[0105] The boss and the groove are opposite to each other, and the shape of the boss and the groove can be serrated. With this arrangement, when the surface of the first clamping part 731 facing the second clamping part 732 is in contact with the surface of the second clamping part 732 facing the first clamping part 731, they can be accurately aligned, reducing the problem of unstable clamping or failure caused by position deviation. In addition, the serrated boss and groove design can make the force distribution during the clamping process more uniform, reducing the damage or deformation of the clamping surface caused by excessive local force on the reinforcement 2. In addition, the serrated structure can also increase the contact area, thereby providing greater friction under the same clamping force, further enhancing the clamping effect of the second clamp 73.

[0106] According to some embodiments of the present invention, Figure 2 As shown, the model box 30 can be constructed as a rectangle, the length of the model box 30 is L1, the width of the model box 30 is L2, and the relationship is satisfied: 1.5L2≤L1≤2L2.

[0107] Among them, Figure 2 As shown, along the X direction, the length of the model box 30 is L1, and along the Y direction, the width of the model box 30 is L2. The length L1 of the model box 30 can be 1.5L2, 2L2, and any value between 1.5L2-2L2. For example, the length L1 of the model box 30 can be 1.5L2, 1.6L2, 1.65L2, 1.7L2, 1.9L2, 2L2 and other values, but the present invention is not limited thereto. The length L1 of the model box 30 can also be other values ​​between 1.5L2-2L2, as long as the length L1 of the model box 30 is 1.5L2, 2L2, and any value between 1.5L2-2L2.

[0108] The length of the model box 30 is L1, and the width of the model box 30 is L2, which satisfies the relationship: 1.5L2≤L1≤2L2, which can enable the model box 30 to provide a larger support area in the length direction, reduce the risk of the model box 30 tipping over or deforming during the drawing process, and the length of the model box 30 is L1 not more than 2L2, which can ensure the rationality of the space utilization of the model box 30. As an example of the present application, the length L1 of the model box 30 can be 1.5m, the width L2 is 1m, and the height is 1.4m. Therefore, L1 satisfies the relationship: 1.5L2≤L1≤2L2, which can not only meet the stability requirements of the model box 30, but also maintain a high space utilization rate, and the reasonable length-to-width ratio of the model box 30 can ensure that the reinforcement 2 is subjected to uniform and stable force during the drawing process, thereby improving the accuracy of the test results.

[0109] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, along the first direction, the length of the first clamp 321 is L3, the thickness of the first side wall 32 is L4, satisfying the relationship: 3L4≤L3≤4L4, the length of the plug-in hole 331 is L5, and the thickness of the second side wall 33 is L6, satisfying the relationship: 3L6≤L5≤4L6.

[0110] Among them, Figure 2 As shown, along the first direction, the length of the first clamp 321 is L3, and the thickness of the first side wall 32 is L4. The length L3 of the first clamp 321 can be any value between 3L4, 4L4 ​​and 3L4-4L4. For example, the length L3 of the first clamp 321 can be 3L4, 3.1L4, 3.5L4, 3.8L4, 4L4 ​​and other values, but the present invention is not limited to this. The length L3 of the first clamp 321 can also be other values ​​between 3L4-4L4, as long as the length L3 of the first clamp 321 is any value between 3L4, 4L4 ​​and 3L4-4L4.

[0111] Further, the length of the first clamp 321 is the length of the first clamp 321 extending toward the installation space 31 along the drawing direction. The length of the first clamp 321 is set to L3, and the relationship is satisfied: 3L4≤L3≤4L4. As an example of the present application, the length L3 of the first clamp 321 can be 4.5 cm, and the thickness L4 of the first side wall 32 can be 1.5 cm. The first clamp 321 can provide a longer contact area along the drawing direction to clamp the reinforcement 2, thereby ensuring that the reinforcement 2 is stably maintained in the first clamp 321, reducing the risk of the reinforcement 2 slipping or deforming, and avoiding the uneven vertical settlement of the filler layer 1 due to the excessive length of the first clamp 321, thereby improving the accuracy of the test results of the reinforcement pulling test device 100.

[0112] The length of the plug-in hole 331 is L5, and the thickness of the second side wall 33 is L6. The length L5 of the plug-in hole 331 can be any value between 3L6, 4L6 and 3L6-4L6. For example, the length L5 of the plug-in hole 331 can be 3L6, 3.1L6, 3.3L6, 3.6L6, 3.8L6, 4L6 and other values, but the present invention is not limited to this. The length L5 of the plug-in hole 331 can also be other values ​​between 3L6-4L6, as long as the length L5 of the plug-in hole 331 is any value between 3L6, 4L6 and 3L6-4L6.

[0113] Further, the length of the plug-in through hole 331 is the length of the plug-in through hole 331 extending toward the installation space 31 along the pulling direction. The length of the plug-in through hole 331 is set to L5, and the relationship is satisfied: 3L6≤L5≤4L6. As an example of the present application, the length L5 of the plug-in through hole 331 can be 4.5 cm, and the thickness L6 of the second side wall 33 can be 1.5 cm. The plug-in through hole 331 can have a sufficient length of hole wall to form a stable contact area with the reinforcement 2, which can not only play a certain supporting role for the reinforcement 2, but also disperse the stress generated by the reinforcement 2 when it is subjected to force, thereby effectively reducing the deformation of the reinforcement 2 when it is subjected to force, and can also prevent the packing layer 1 from being taken out of the model box 30, and can also prevent the length of the plug-in through hole 331 from being too long and the vertical settlement of the packing layer 1 is uneven, thereby further improving the accuracy of the test results of the reinforcement pulling test device 100.

[0114] According to some embodiments of the present invention, the reinforcement pulling test device 100 may further include: a data detection mechanism, which is arranged in the installation space 31 and is communicatively connected to the control device 80, and the data detection mechanism is used to detect data information of the interaction between the filler layer 1 and the reinforcement 2.

[0115] Among them, the data detection mechanism may include: displacement sensor, strain sensor, soil pressure sensor and other detection mechanisms, the displacement sensor, strain sensor, soil pressure sensor can be arranged in the installation space 31 and communicated with the control device 80, and the data detection mechanism is used to detect the data information of the interaction between the packing layer 1 and the reinforcement 2. Specifically, the displacement sensor can monitor the displacement of the driver 71, the second clamp 73, the reinforcement 2 and other components to monitor the position change of the reinforcement 2 during the drawing process. The strain sensor can be attached to the surface of the reinforcement 2, and the strain of the reinforcement 2 is reflected by measuring the change of its resistance value. The soil pressure sensor can be buried in the packing layer 1, and the interaction between the packing layer 1 and the reinforcement 2 is reflected by measuring the pressure of the packing layer 1 on the soil pressure sensor. The displacement sensor, strain sensor, and soil pressure sensor can be arranged in the installation space 31 and communicated with the control device 80, so that the control device 80 can receive the data information sent by the displacement sensor, strain sensor, and soil pressure sensor, and process and analyze it to obtain the data information of the interaction between the packing layer 1 and the reinforcement 2, which provides strong support for the calculation of the mechanical properties of the reinforcement 2.

[0116] Furthermore, the pulling test process can be: after the installation of the reinforcement pulling test device 100 is completed, the filling layer 1 is filled into the installation space 31 of the model box 30 through the assembly port 311 of the installation space 31, and a layer of reinforcement 2 is laid after filling a layer of filling layer 1. The laying position of the reinforcement 2 can be selected according to the test requirements. The reinforcement 2 extends into the installation space 31 through the plug-in through hole 331. According to the test requirements, one end of a portion of the reinforcement 2 facing the first clamp 321 can be extended into the first clamp 321 and clamped to meet the passive pulling test requirements, and one end of a portion of the reinforcement 2 facing the first clamp 321 does not extend into the first clamp 321. A layer of reinforcement 2 can be laid in the installation space 31, or multiple layers of reinforcement 2 can be laid. When laying the reinforcement 2, a data detection mechanism can be installed in the installation space 31. After the filling layer 1 and the reinforcement 2 are laid, the control device 80 controls the second driving mechanism 61 to drive the corresponding horizontal pulling mechanism 70 along the reinforcement The pulling test device 100 moves in the height direction so that the corresponding horizontal pulling mechanism 70 moves to the height of the corresponding reinforcement 2, so that the corresponding horizontal pulling mechanism 70, the corresponding second clamp 73, and the corresponding reinforcement 2 are located in the same horizontal plane, and the corresponding second clamp 73 and the corresponding reinforcement 2 are fixedly connected so that the second clamp 73 clamps the corresponding reinforcement 2. The model cover 50 is assembled from the assembly port 311 to the installation space 31 to seal the installation space 31. The control device 80 controls the first driving mechanism 40 to press against the model cover 50, so as to give the vertical target pressure to the filler and the reinforcement 2. The control device 80 controls the horizontal pulling mechanism 70 to drive the horizontal stretching rod 72 to contract, so as to perform a pulling movement on the corresponding reinforcement 2, wherein the vertical pressure, horizontal pulling force, and pulling speed can be set and monitored according to the test requirements. The control device 80 can be provided with a display, which can record and store the test data for the subsequent calculation of the mechanical properties of the reinforcement 2. After the test, the horizontal pulling force is canceled, and the reinforcing material 2 is separated from the second clamp 73, the vertical pressure is canceled, and the loading pad 44 is separated from the model cover 50, and finally the model box 30 is dismantled, the filling layer 1 and the reinforcing material 2 are removed, and the test site is cleaned up.

[0117] According to a test method using a reinforcement pull-out test device according to an embodiment of the present invention, the reinforcement pull-out test device is the reinforcement pull-out test device described above, and the test method includes:

[0118] S1, install the reinforcement pull-out test device on the installation base surface of the test site.

[0119] Among them, the installation base surface is a rigid ground, and the installation base surface has a certain rigidity and load-bearing capacity. The first mounting seat, the model box, and the second mounting seat are all installed on the installation base surface, the first driving mechanism is installed on the first mounting seat, the second driving mechanism is installed on the second mounting seat, and the horizontal pulling mechanism is installed on the second driving mechanism, so that the reinforcement pulling test device can be firmly installed on the installation base surface, so that the reinforcement pulling test device can operate stably for a long time, and the test accuracy of the reinforcement pulling test device can also be improved.

[0120] S2, laying multiple packing layers and multiple reinforcements in the installation space in sequence along the height direction of the reinforcement pull-out test device, with a reinforcement arranged between two adjacent packing layers, and the topmost and bottommost layers of the installation space are both packing layers, and the reinforcements are passed through the corresponding plug-in through holes.

[0121] Among them, the number of multiple packing layers and multiple reinforcement materials and the laying position of the reinforcement materials can be reasonably set according to the test requirements. The packing layer can be sand, gravel, etc., and the reinforcement material can be a reinforced soil flexible abutment composite structure. The multiple packing layers and multiple reinforcement materials are laid in the installation space in sequence along the height direction of the reinforcement pull-out test device. A reinforcement material is set between two adjacent packing layers, and the top and bottom layers of the installation space are both packing layers, which can ensure that each reinforcement material is completely embedded in the packing layer to ensure the accuracy of the test. The reinforcement material is inserted into the corresponding plug-in through hole, which can enable the horizontal pulling mechanism to clamp the reinforcement material extending from the corresponding plug-in through hole. In this way, each reinforcement material can be subjected to the pressure of the upper packing layer and the tensile force from the pulling mechanism, so as to comprehensively evaluate the tensile performance, deformation characteristics and interaction between the reinforcement material and the packing material, and multiple reinforcement materials are tested simultaneously in the reinforcement pull-out test device, which can not only improve the experimental efficiency, but also comprehensively and accurately evaluate the performance of the reinforcement material by comparing the test results of different reinforcement materials.

[0122] S3, controlling the horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device so that the horizontal pulling mechanism and the corresponding reinforcement are located at the same height, and controlling the horizontal pulling mechanism to clamp the corresponding reinforcement.

[0123] Among them, the control device is connected to the horizontal pulling mechanism in communication, so that the control device can control the horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device so that the horizontal pulling mechanism and the corresponding reinforcement are at the same height. Specifically, the second driving mechanism can be provided with a slide rail and a ball, the ball is arranged in the slide rail, the slide rail extends along the height direction of the reinforcement pulling test device, the driver can be provided with a slider, the slider is sleeved on the slide rail, and the slider can be driven to move along the height direction of the reinforcement pulling test device through the rolling of the ball, so that the second driving mechanism can selectively drive the horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device. And the second clamp in the horizontal pulling mechanism is controlled to clamp the corresponding reinforcement, so that multiple layers of reinforcement can be pulled to accurately measure the common interaction mechanical properties between the multiple layers of reinforcement.

[0124] S4, assembling the model cover from the assembly opening above the uppermost filler layer in the installation space.

[0125] The model cover is assembled from the assembly port above the uppermost filler layer in the installation space, thereby being able to seal the installation space to prevent leakage of the filler layer.

[0126] S5, controlling the first driving mechanism to apply pressure to the model cover along the height direction of the reinforcement pulling test device, so that the pressure applied by the first driving mechanism to the model cover reaches a target pressure.

[0127] Among them, the control device is communicatively connected with the first driving mechanism, so that the control device can control the first driving mechanism to apply pressure to the model cover along the height direction of the reinforcement pulling test device, and drive the telescopic column to extend toward the model cover through the actuator, so that the first driving mechanism applies pressure to the model cover to reach the target pressure, and keeps the model cover evenly stressed, thereby making the reinforcement evenly stressed.

[0128] S6, controlling the horizontal pulling mechanism to pull the corresponding reinforcement material according to a preset pulling force and a preset moving speed, so as to pull the corresponding reinforcement material out of the installation space.

[0129] Among them, the control device is communicatively connected with the horizontal pulling mechanism, so that the control device can control the horizontal pulling mechanism to pull the corresponding reinforcement material according to the preset pulling force and the preset moving speed, so as to pull the corresponding reinforcement material out of the installation space, and the pulling test of multiple layers of reinforcement material can be carried out simultaneously, and the changes of the reinforcement material and the destruction process of the filler layer during the pulling process can be observed through the observation window.

[0130] S7, obtain the horizontal pulling displacement x1 (m) of the end of the corresponding reinforcement away from the reinforcement pulling test device and the horizontal pulling displacement x2 (m) of the end close to the reinforcement pulling test device, and obtain the horizontal pulling force T (kN) applied by the horizontal pulling mechanism on the corresponding reinforcement, and obtain the first driving mechanism to apply multiple different pressures P (kN) to the model cover.

[0131] Among them, the driver can be provided with a displacement sensor for monitoring the horizontal pulling displacement x1(m) of the end of the corresponding reinforcement away from the reinforcement pulling test device, and the displacement sensor installed at the end of the reinforcement located in the model box can be used to monitor the horizontal pulling displacement x2(m) of the end close to the reinforcement pulling test device. The control device can control the horizontal pulling force T(kN) applied by the horizontal pulling mechanism to the corresponding reinforcement, and the control device can control the first driving mechanism to apply multiple different pressures P(kN) to the model cover, so that different x1(m), x2(m), and T(kN) can be obtained according to different pressures P(kN).

[0132] The normal stress is calculated by the formula:

[0133] The normal stress σ (kPa) of the corresponding reinforcement can be calculated.

[0134] γ is the packing density (kN / m 3 )

[0135] h i is the distance from the upper surface of the i-th layer of reinforcement to the top surface of the filler layer (m)

[0136] S A is the horizontal area inside the model box (m2)

[0137] Shear stress is calculated by the formula:

[0138] The shear stress τ (kPa) of the corresponding reinforcement can be calculated.

[0139] T i is the horizontal tension on the i-th layer of reinforcement (kN)

[0140] L0 is the initial length of the reinforcement when it is embedded in the filler without loading (m)

[0141] w is the width of the reinforcement when it is embedded in the filler without loading (m)

[0142] The friction coefficient is calculated by the pull-off formula:

[0143] The pull-out friction coefficient μ of the corresponding reinforcement can be calculated.

[0144] S8, according to x2(m), T(kN) and P(kN), determine the normal stress σ(kPa), shear stress τ(kPa), pull-out friction coefficient μ on the corresponding reinforcement, and determine the friction strength parameter cohesion C on the corresponding reinforcement i and friction angle θ i .

[0145] Among them, a plurality of different pressures P (kN) can be applied to the model cover through the first driving mechanism, and different x1 (m), x2 (m), and T (kN) can be obtained according to the different pressures P (kN). In this application, three different pressures P (kN) are applied to the model cover through the first driving mechanism to obtain three groups of P (kN), x1 (m), x2 (m), and T (kN). According to the calculation formulas (1) and (2) in S7 above, three groups of σ (kPa) and τ (kPa) can be obtained. Then, by the calculation formula: τ i =C i +σ i tan(θ i )(4)

[0146] The friction strength parameter cohesion C of the corresponding reinforcement can be calculated i and friction angle θ i .

[0147] Furthermore, the pulling test process can be: after the installation of the reinforcement pulling test device is completed, a filling layer is filled into the installation space of the model box through the assembly port of the installation space, and a layer of reinforcement is laid after filling a layer of filling layer. The laying position of the reinforcement can be selected according to the test requirements. The reinforcement extends into the installation space through the plug-in through hole. According to the test requirements, a part of the reinforcement facing one end of the first clamp can be extended into the first clamp and clamped to meet the passive pulling test requirements, and a part of the reinforcement facing one end of the first clamp can not be extended into the first clamp. A layer of reinforcement can be laid in the installation space, or multiple layers of reinforcement can be laid. When laying the reinforcement, a data detection mechanism can be installed in the installation space. After the filling layer and the reinforcement are laid, the control device controls the second driving mechanism to drive the corresponding horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device, so that the corresponding horizontal pulling mechanism moves to the height of the corresponding reinforcement, thereby making the corresponding horizontal pulling machine The structure, the corresponding second clamp, and the corresponding reinforcement are located in the same horizontal plane, and the corresponding second clamp and the corresponding reinforcement are fixedly connected so that the second clamp clamps the corresponding reinforcement. The model cover is assembled from the assembly port to the installation space to seal the installation space. The control device controls the actuator in the first driving mechanism to drive the telescopic column to extend toward the model cover to press against the model cover, thereby providing a vertical target pressure to the filler and the reinforcement. The control device controls the horizontal pulling mechanism to drive the horizontal stretching rod to contract, thereby performing a pulling movement on the corresponding reinforcement. The vertical pressure, horizontal pulling force, and pulling speed can all be set and monitored according to the test requirements. The control device can be provided with a display, which can record and store the test data for subsequent calculation of the mechanical properties of the reinforcement. Then, the normal stress σ (kPa), shear stress τ (kPa), pulling friction coefficient μ, and friction strength parameter cohesion C of the reinforcement can be calculated through the calculation formulas (1), (2), (3), and (4) in the above S8. i and friction angle θi After the test, the horizontal pull-out force is removed, the reinforcement is separated from the second fixture, the vertical pressure is removed, and the loading pad is separated from the model cover. Finally, the model box is dismantled, the filler layer and reinforcement are removed, and the test site is cleaned up.

[0148] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0149] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reinforcement pull-out test device, characterized in that: include: A first mounting seat, wherein the first mounting seat is fixedly mounted on the mounting base surface; A model box, the model box is fixedly mounted on the mounting base surface, the model box defines an installation space, the upper end of the installation space is open to form an assembly port, along a first direction, the model box has a first side wall and a second side wall opposite to each other, the installation space is located between the first side wall and the second side wall, a plurality of first clamps are arranged in the installation space, the plurality of first clamps are fixedly mounted on the first side wall and are arranged in sequence along the height direction of the reinforcement pulling test device, the second side wall has a plurality of plug-in through holes, the plurality of plug-in through holes are arranged in sequence along the height direction of the reinforcement pulling test device and correspond one-to-one to the plurality of first clamps, and the first direction is perpendicular to the height direction of the reinforcement pulling test device; a first driving mechanism and a model cover, wherein the model cover is selectively assembled in the installation space from the assembly opening, the first driving mechanism is located above the model cover and fixed to the first mounting seat, and the first driving mechanism selectively presses against the model cover; A second mounting seat and a plurality of horizontal pulling mechanisms, wherein the second mounting seat is located on a side of the second side wall away from the first side wall and is fixed to the mounting base surface, and the plurality of horizontal pulling mechanisms are sequentially arranged along the height direction of the reinforcement pulling test device and are arranged on the second mounting seat, and each of the horizontal pulling mechanisms selectively moves along the height direction of the reinforcement pulling test device; A control device is communicatively connected with both the first driving mechanism and the horizontal pulling mechanism.

2. The reinforcement pull-out test device according to claim 1, characterized in that: Along the second direction, the model box also has a third side wall and a fourth side wall opposite to each other, the installation space is located between the third side wall and the fourth side wall, at least one of the third side wall and the fourth side wall is provided with an observation window, and the first direction, the second direction and the height direction of the reinforcement pulling test device are perpendicular to each other.

3. The reinforcement pull-out test device according to claim 2, characterized in that: The model box also has a mounting frame, and at least one of the first side wall, the second side wall, the third side wall and the fourth side wall is detachably arranged on the mounting frame.

4. The reinforcement pulling test device according to claim 1, characterized in that: Each of the first clamps is formed with a clamping hole.

5. The reinforcement pulling test device according to claim 1, characterized in that: Each of the plug-in through holes is provided with a sealing member.

6. The reinforcement pull-out test device according to claim 1, characterized in that: The first driving mechanism includes: a mounting frame, an actuator, a telescopic column and a loading pad, the mounting frame is fixed to the first mounting seat, the actuator is fixed to the mounting frame, the telescopic column is located between the actuator and the loading pad, the upper end of the telescopic column is connected to the actuator, and the lower end of the telescopic column is fixedly connected to the loading pad.

7. The reinforcement pull-out test device according to claim 1, characterized in that: The second mounting seat has a second driving mechanism, and the plurality of horizontal pulling mechanisms are arranged on the second driving mechanism. The second driving mechanism selectively drives the horizontal pulling mechanisms to move along the height direction of the reinforcement pulling test device, and the control device is communicatively connected with the second driving mechanism.

8. The reinforcement pull-out test device according to claim 7, characterized in that: Each of the horizontal pulling mechanisms includes: a driver, a horizontal stretching rod and a second clamp, the driver is arranged in the second driving mechanism, the second clamp is located on the side of the corresponding driver facing the second side wall, the horizontal stretching rod is a telescopic rod, and the horizontal stretching rod is connected between the driver and the second clamp.

9. The reinforcement pull-out test device according to claim 8, characterized in that: The second clamp includes: a first clamping part and a second clamping part, the first clamping part is fixedly connected to the horizontal stretching rod, the first clamping part and the second clamping part are arranged along the height direction of the reinforcement pulling test device, and the second clamping part is detachably provided on the first clamping part to selectively clamp the reinforcement.

10. The reinforcement pulling test device according to claim 9, characterized in that: One of a boss and a groove is formed on a surface of the first clamping portion facing the second clamping portion, and the other of the boss and the groove is formed on a surface of the second clamping portion facing the first clamping portion, and the boss and the groove are opposite to each other.

11. The reinforcement pulling test device according to claim 1, characterized in that: The model box is constructed in a rectangular shape, the length of the model box is L1, the width of the model box is L2, and the relationship is satisfied: 1.5L2≤L1≤2L2.

12. The reinforcement pulling test device according to claim 1, characterized in that: Along the first direction, the length of the first clamp is L3, the thickness of the first side wall is L4, satisfying the relationship: 3L4≤L3≤4L4, the length of the plug-in through hole is L5, the thickness of the second side wall is L6, satisfying the relationship: 3L6≤L5≤4L6.

13. The reinforcement pulling test device according to claim 1, characterized in that: Also includes: A data detection mechanism is disposed in the installation space and is in communication connection with the control device, and is used for detecting data information of the interaction between the filler layer and the reinforcement material.

14. A test method using a reinforcement pull-out test device, characterized in that: The reinforcement pull-out test device is a reinforcement pull-out test device according to any one of claims 1 to 13, and the test method comprises: Installing the reinforcement pull-out test device on the installation base surface of the test site; Multiple packing layers and multiple reinforcements are sequentially laid in the installation space along the height direction of the reinforcement pull-out test device, one reinforcement is arranged between two adjacent packing layers, and the topmost and bottommost layers of the installation space are both the packing layers, and the reinforcements are passed through the corresponding plug-in through holes; Controlling the horizontal pulling mechanism to move along the height direction of the reinforcement pulling test device so that the horizontal pulling mechanism and the corresponding reinforcement are located at the same height, and controlling the horizontal pulling mechanism to clamp the corresponding reinforcement; Assemble the model cover from the assembly opening above the uppermost filler layer in the installation space; Controlling the first driving mechanism to apply pressure to the model cover along the height direction of the reinforcement pulling test device, so that the pressure applied by the first driving mechanism to the model cover reaches a target pressure; Controlling the horizontal pulling mechanism to pull the corresponding reinforcement material according to a preset pulling force and a preset moving speed, so as to pull the corresponding reinforcement material out of the installation space; Obtain the horizontal pulling displacement x1(m) of the end of the corresponding reinforcement away from the reinforcement pulling test device and the horizontal pulling displacement x2(m) of the end close to the reinforcement pulling test device, obtain the horizontal pulling force T(kN) applied by the horizontal pulling mechanism on the corresponding reinforcement, and obtain the multiple different pressures P(kN) applied by the first driving mechanism to the model cover; According to the x2(m), T(kN) and P(kN), the normal stress σ(kPa), shear stress τ(kPa), and pull-out friction coefficient μ on the corresponding reinforcement are determined, and the friction strength parameters cohesion Ci and friction angle θi on the corresponding reinforcement are determined.

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