A structural soil two-body loading device

Abstract

This invention discloses a two-body loading and shearing device for structural soil, comprising a base, a specimen box, a structural soil shear measurement mechanism, and a structural soil tensile measurement mechanism mounted on the base. The base is a cross-shaped mounting seat with a guide plate and symmetrically arranged first adjustment grooves on the guide plate. The specimen box is movably mounted on a ball bearing plate between the two first adjustment grooves, including a left specimen mounting box and a right specimen mounting box for use. The structural soil shear measurement mechanism is set in the first adjustment groove via an adjustment component, including a horizontal loading component and a horizontal positioning component for use. The structural soil tensile measurement mechanism is set on the base along the width direction and works in conjunction with the specimen box. This device, by setting the specimen box, structural soil shear measurement mechanism, and structural soil tensile measurement mechanism on the base, can complete the testing of the shear and tensile strength of the specimen during use, and has the characteristics of simple structure, wide applicability, and high testing accuracy.

Description

Technical Field

[0001] This invention relates to the field of civil engineering testing technology, specifically to a structural soil two-body loading device. Background Technology

[0002] The two-body loading test for structural soil is a civil engineering testing technique used to detect the shear and tensile strength of structural soil and evaluate its overall strength. Currently, tensile strength and shear strength tests in two-body loading devices for structural soil are performed using different testing equipment, i.e., two different structures are used to achieve two-body loading of the structural soil. This results in significant investment in testing equipment, large space requirements, and cumbersome operation. Moreover, most existing tensile strength testing devices use vertical tension, which can lead to some deviation in the test data due to the weight of the sample.

[0003] Therefore, there is an urgent need to develop a device that can simultaneously perform two-body loading on structural soil in order to solve the problems existing in the above-mentioned technologies. Summary of the Invention

[0004] To address the aforementioned problems, this invention aims to provide a two-body loading device for structural soil. This device, by setting a specimen box, a structural soil shear measurement mechanism, and a structural soil tensile measurement mechanism on a base, can complete the testing of the shear and tensile strength of the specimen during use. It features a simple structure, a wide range of applicable experiments, and high testing accuracy.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A two-body loading shear device for structural soil includes a base, a specimen box, a structural soil shear measurement mechanism, and a structural soil tensile measurement mechanism mounted on the base.

[0007] The base is a cross-shaped mounting base, and a guide plate is provided on the base along the length direction of the base. The guide plate is symmetrically provided with first adjustment grooves along the length direction of the guide plate.

[0008] The specimen box is movably mounted on a sliding bead plate between two first adjustment grooves, including a left specimen mounting box and a right specimen mounting box that cooperate with each other. Both the left and right specimen mounting boxes are used in conjunction with the structural soil shear measurement mechanism and the structural soil tensile measurement mechanism, and specimens are placed inside the specimen box.

[0009] The structural soil shear resistance measurement mechanism is movably set in the first adjustment groove through an adjustment component, including a horizontal loading component and a horizontal positioning component that work together, and both the horizontal loading component and the horizontal positioning component are used in conjunction with the specimen box;

[0010] The tensile strength measurement mechanism for the structural soil is positioned in the middle of the base along the width direction and is used in conjunction with the specimen box.

[0011] Preferably, the adjustment assembly includes a threaded adjustment rod, a first adjustment wheel, and a slider. The first adjustment wheel is disposed at the end of the threaded adjustment rod. The threaded adjustment rod is mounted on the guide plate via a bearing and is screwed to the slider. Rotating the first adjustment wheel causes the slider to slide along the first adjustment groove. Both the horizontal loading assembly and the horizontal positioning assembly are disposed on the slider. The horizontal loading assembly is a hydraulic component, and the horizontal positioning assembly is a positioning column. Both the positioning column and the hydraulic component are disposed on the slider via a fixing component, and the positioning column and the hydraulic component are disposed at the same height.

[0012] Preferably, pressure sensors are provided at the ends of the positioning column and the piston rod of the hydraulic component, and the pressure sensors act on the loading holes of the left and right specimen mounting boxes.

[0013] Preferably, the guide plate is further provided with a first slot in the middle, the ball bearing stencil is detachably installed on the first slot, and a plurality of recessed holes are provided in the first slot. A ball bearing is movably installed in the recessed holes, the upper end of the ball bearing extends out of the stencil on the ball bearing stencil, and is used in conjunction with the specimen box.

[0014] Preferably, the base is further provided with a positioning plate, and the lower end of the positioning plate is provided with a locking block that cooperates with a first guide groove provided on the base. The first guide groove is provided along the length direction of the base, and the positioning plate, the left specimen mounting box and the right specimen mounting box are all provided with connecting holes that cooperate with each other; and a second guide groove is provided along the length direction of the guide plate, and a third guide groove is provided on the left specimen mounting box and the right specimen mounting box. The second guide groove and the third guide groove are both used in conjunction with a limiting strip provided on the inner side of the positioning plate.

[0015] Preferably, a specimen support plate is integrally formed at the bottom of the left specimen mounting box, the right specimen mounting box is slidably mounted on the specimen support plate, and several water-permeable holes are provided on the specimen support plate. The left and right specimen mounting boxes are also provided with screw holes, which are used in conjunction with the structural soil tensile strength measurement mechanism.

[0016] Preferably, the specimen box further includes a pulling member, which includes a first pulling rod and a second pulling rod. The first pulling rod and the second pulling rod are both L-shaped structures. The inserts at the ends of the first pulling rod and the second pulling rod cooperate with the slots provided on the left specimen mounting box and the right specimen mounting box. The first pulling rod is provided with a telescopic groove. The second pulling rod is movably inserted into the telescopic groove through a telescopic component and a locking component to connect the left specimen mounting box and the right specimen mounting box.

[0017] Preferably, the telescopic assembly includes a second adjusting wheel and a gear. The second adjusting wheel is mounted on the first traction rod via a bearing, and the connecting shaft of the second adjusting wheel passes through the central hole of the gear and is fixedly connected to the gear. The gear is installed in the telescopic groove and meshes with a rack located on the lower side of the second adjusting groove on the second traction rod. The locking assembly is a locking block. The locking block is located in the second mounting groove on the upper side of the first traction rod via a pin, and a one-way locking tooth is provided on the lower side of the locking block to cooperate with the one-way locking rack located on the upper side of the second traction rod.

[0018] Preferably, the tensile strength measurement mechanism for structural soil includes a pull rope, a fixed pulley, a screw-connector, and a tension sensor. The pull rope passes through the fixed pulley located on the front side of the right specimen mounting box, with one end connected to the screw-connector and the other end passing freely through the fixed pulley. Several weights are provided at the end of the pull rope. The screw-connector is connected to the specimen box through a screw hole. The screw-connector on the right specimen mounting box is connected to the pull rope, and the screw-connector on the left specimen mounting box is connected to a force measuring plate located on the rear side of the left specimen mounting box via a tension sensor. A tension sensor is also provided on the pull rope.

[0019] Preferably, the fixed pulley is installed at the same height as the screw-in connector, and a guide groove is provided on the fixed pulley for use with the pulling rope.

[0020] The beneficial effects of this invention are: This invention discloses a structural soil two-body loading device, and compared with the prior art, the improvement of this invention lies in:

[0021] 1. This invention designs a two-body loading device for structural soil, including a base, a specimen box mounted on the base, a structural soil shear measurement mechanism, and a structural soil tensile measurement mechanism. In use, a horizontal shear force is applied to the right specimen mounting box via hydraulic action. Simultaneously, pressure sensors are used to test the horizontal load on the hydraulic components and the horizontal pressure reflected by the left specimen mounting box, recording the creep process of the specimen after being subjected to horizontal shear force. This allows for the measurement of the relationship between the specimen's deformation capacity under shear force and the applied load, completing the horizontal shear test on the specimen. The device has the advantages of simple structure and ease of use. Furthermore, the positioning plate ensures that the right specimen mounting box maintains horizontal linear movement throughout the experiment, effectively guaranteeing experimental accuracy.

[0022] 2. Simultaneously, this device, by setting the base as a "+" shaped mounting base, and installing the structural soil tensile measuring mechanism perpendicular to the structural soil shear measuring mechanism, allows for the recording of the creep process of the specimen under tensile force using a tensile sensor. This enables the measurement of the relationship between the specimen's deformation capacity under tensile force and the applied load. In other words, both tensile and shear tests of structural soil are performed on a single measuring device. The device has a small overall structure, uses fewer electrical components, and is simpler in design. Measuring the tensile capacity of the specimen by applying horizontal tensile force effectively avoids the influence of specimen gravity on the experimental results, ensuring the accuracy of the results.

[0023] 3. This invention designs a novel specimen box that can be used to meet both shear and tensile strength requirements of specimens. It has the advantages of simple structure and flexible and convenient use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the soil-soil two-body loading device of the present invention under shear resistance test.

[0025] Figure 2 This is a schematic diagram of the structure of the soil-soil two-body loading device of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the guide plate of the present invention.

[0027] Figure 4 This is a partial enlarged view of the guide plate A of the present invention.

[0028] Figure 5 This is an exploded view of the test specimen box of the present invention.

[0029] Figure 6 This is an exploded view of the tensioning component of the present invention.

[0030] Figure 7 This is a cross-sectional view of the tensioning component of the present invention.

[0031] Figure 8 This is a cross-sectional view of the horizontal positioning component of the present invention.

[0032] Figure 9 This is a schematic diagram of the structure of the soil-soil two-body loading device of the present invention under tensile test.

[0033] Figure 10 This is a schematic diagram of the structure of the tensile strength measurement mechanism for soil structure of the present invention.

[0034] Figure 11 This is a front view of the structural soil tensile strength measurement mechanism of the present invention.

[0035] The components are: 1. Base, 11. First guide groove, 2. Guide plate, 21. First adjustment groove, 22. Threaded adjustment rod, 23. First adjustment wheel, 24. Slider, 25. Fixing component, 26. Sliding ball slat plate, 27. Sliding ball, 28. First slot, 281. Embedded hole, 29. Second guide groove, 3. Horizontal loading assembly, 31. Hydraulic component, 4. Positioning plate, 41. Limiting strip, 5. Specimen box, 51. Left specimen mounting box, 511. Specimen support plate, 5111. Water permeable hole, 52. Right specimen mounting box, 521. Screw hole, 522. Loading hole, 53. Pulling component, 531. 5311. First traction rod; 5312. Second mounting slot; 5313. Telescopic slot; 532. Second traction rod; 5321. One-way locking rack; 5322. Second adjusting slot; 533. Locking block; 534. Second adjusting wheel; 535. Insert block; 536. Gear; 54. Slot; 55. Specimen slot; 56. Third guide slot; 6. Horizontal positioning assembly; 61. Positioning column; 62. Pressure sensor; 7. Structural soil tensile strength measuring mechanism; 71. Weight; 72. Pulling rope; 73. Fixed pulley; 74. Screw connection; 75. Force measuring plate; 76. Tension sensor; 8. Specimen. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Example 1: Refer to Appendix Figure 1-11 The illustrated structural soil two-body loading device includes a base 1, a specimen box 5, a structural soil shear measurement mechanism, and a structural soil tensile measurement mechanism 7, all mounted on the base 1.

[0038] The base 1 is a cross-shaped mounting base, and a guide plate 2 is provided on the base 1 along the length direction of the base. A first adjustment groove 21 is symmetrically provided on the guide plate 2 along the length direction of the guide plate 2.

[0039] The specimen box 5 is movably mounted on the ball bearing plate 26 between the two first adjustment grooves 21, including a left specimen mounting box 51 and a right specimen mounting box 52 that cooperate with each other. Both the left specimen mounting box 51 and the right specimen mounting box 52 are used in conjunction with the structural soil shear measurement mechanism and the structural soil tensile measurement mechanism 7. The specimen box 5 contains a specimen 8. In use, the shear and tensile strength of the specimen 8 are tested by the structural soil shear measurement mechanism and the structural soil tensile measurement mechanism 7, respectively.

[0040] The structural soil shear resistance measurement mechanism is movably set in the first adjustment groove 21 along the length direction of the guide plate 2 via an adjustment component. It includes a horizontal loading component 3 and a horizontal positioning component 6 that work together. Both the horizontal loading component 3 and the horizontal positioning component 6 are used in conjunction with the specimen box 5 to measure the shear resistance of the specimen 8.

[0041] The tensile strength measuring mechanism 7 for structural soil is set in the middle of the base 1 along the width direction of the base 1 and is used in conjunction with the specimen box 5 to measure the tensile strength of the specimen 8.

[0042] Preferably, to facilitate adjustment of the relative positions of the horizontal loading component 3 and the horizontal positioning component 6 according to actual measurement needs, the adjustment component includes a threaded adjusting rod 22, a first adjusting wheel 23, and a slider 24. The first adjusting wheel 23 is disposed at the end of the threaded adjusting rod 22. The threaded adjusting rod 22 is mounted on the guide plate 2 via a bearing and is screwed to the slider 24. In use, by manually rotating the first adjusting wheel 23, the slider 24 is driven to slide along the first adjusting groove 21 through the mutual screwing action between the threaded adjusting rod 22 and the slider 24. Both the horizontal loading component 3 and the horizontal positioning component 6 are disposed on the slider 24. That is, in use, the relative positions of the two horizontal loading components 3 and the horizontal positioning component 6 are adjusted by rotating the first adjusting wheel 23 to meet the fixing requirements of different positions.

[0043] Preferably, to ensure that the horizontal shear force provided by the horizontal loading component 3 and the reaction force applied to the specimen box 5 by the horizontal positioning component 6 are at the same height when the horizontal loading component 3 applies a load to the specimen box 5, and to reduce the error caused by the difference in height between the active load and the reaction force, the horizontal loading component 3 and the horizontal positioning component 6 are designed to have the same height; the horizontal loading component 3 is a hydraulic component 31, which is fixedly mounted on the slider 24 by the fixing component 25, and the piston rod end of the hydraulic component 31 acts on the loading hole 522 of the right specimen mounting box 52, applying a horizontal shear force to the right to the right to the right specimen mounting box 52. The horizontal positioning component 6 is a positioning post 61, which is fixedly mounted on the slider 24 by a fixing member 25. The end of the positioning post 61 acts on the loading hole 522 of the left specimen mounting box 51. Pressure sensors 62 are provided at the ends of the piston rods of the positioning post 61 and the hydraulic component 31. In use, the pressure sensors 62 are used to test the horizontal load of the hydraulic component 31 and the horizontal pressure reflected by the left specimen mounting box 51, respectively, to record the creep process of the specimen 8 after being subjected to horizontal shear force, and then measure the relationship between the deformation capacity of the specimen 8 under shear force and the applied load.

[0044] Preferably, to reduce the friction between the specimen box 5 and the sliding ball stencil 26 when subjected to horizontal shear force, and to ensure the shear resistance test accuracy of the specimen box 5 when subjected to horizontal shear force, a first slot 28 is provided in the middle of the guide plate 2. The sliding ball stencil 26 is detachably installed on the first slot 28, and a plurality of recessed holes 281 are also provided in the first slot 28. A sliding ball 27 is movably installed in the recessed hole 281. The upper arc surface of the sliding ball 27 extends out of the stencil provided on the sliding ball stencil 26 and is used in conjunction with the specimen box 5. That is, during installation, the specimen box 5 is installed on the sliding ball stencil 26 by means of the sliding ball 27.

[0045] Preferably, to ensure that the right specimen mounting box 52 can move horizontally in a straight line when subjected to the hydraulic component 31, avoiding the influence of friction and ensuring experimental accuracy, a positioning plate 4 is also provided on the base 1. The lower end of the positioning plate 4 is provided with a locking block that cooperates with the first guide groove 11 provided on the base 1. The first guide groove 11 is provided along the length direction of the base 1. In use, the locking block is engaged in the first guide groove 11 and moves along the first guide groove 11. Connection holes are provided on the positioning plate 4, the left specimen mounting box 51, and the right specimen mounting box 52. In use, the positioning plate 4 is connected to the left specimen mounting box 51 and the right specimen mounting box 52 using connecting bolts. The guiding effect of the positioning plate 4 is used to fix the left specimen mounting box 51 and the right specimen mounting box 52, ensuring that the right specimen mounting box 52 can only move in a straight line along the length direction of the base 1 when subjected to external force, thus ensuring experimental accuracy.

[0046] Meanwhile, a second guide groove 29 is also provided on the outer wall of the guide plate 2 along the length direction of the guide plate 2. The second guide groove 29 is used in conjunction with the limiting strip 41 provided at the bottom inner side of the positioning plate 4. That is, in use, the limiting strip 41 is engaged in the second guide groove 29. Through the limiting effect of the second guide groove 29 and the limiting strip 41, the positioning plate 4 can maintain linear movement when moving, thereby ensuring that the right specimen mounting box 52 can only move linearly along the length direction of the base 1 when subjected to external force, thus ensuring experimental accuracy.

[0047] The usage process and operating principle of the structural soil two-body loading device described in this embodiment include:

[0048] First, the specimen 8 is installed in the specimen box 5, and the specimen box 5 is placed on the sliding ball plate 26. The position of the specimen box 5 is finely adjusted, and the specimen box 5 is connected to the positioning plate 4 with bolts to form a whole. The positioning plate 4 guides the movement of the left specimen mounting box 51 and the right specimen mounting box 52 and fixes their relative positions to prevent damage to the specimen 8. Then, according to the actual experimental needs, the first adjusting wheel 23 is manually rotated to adjust the relative position between the two horizontal loading components 3 and the horizontal positioning component 6 to meet the fixation requirements. Then, by controlling the hydraulic component 31, a horizontal shear force is applied to the right specimen mounting box 52. At the same time, the pressure sensor 62 is used to test the horizontal load of the hydraulic component 31 and the horizontal pressure reflected by the left specimen mounting box 51 to record the creep process of the specimen 8 after being subjected to horizontal shear force. Then, the relationship between the deformation capacity of the specimen 8 under shear force and the applied load is measured to complete the horizontal shear test of the specimen 8.

[0049] Example 2: Unlike Example 1, in order to simultaneously meet the horizontal shear and tensile strength tests of specimen 8, both the left specimen mounting box 51 and the right specimen mounting box 52 are designed to have mutually cooperating trapezoidal specimen grooves 55. The specimen grooves 55 are used in conjunction with specimen 8. At the same time, in order to ensure the stability of the left specimen mounting box 51 and the right specimen mounting box 52 when connected to the positioning plate 4 and to ensure that their installation height is consistent and to ensure experimental accuracy, a third guide groove 56 is also provided on the left specimen mounting box 51 and the right specimen mounting box 52. The third guide groove 56 is used in conjunction with the limiting strip 41 located in the middle of the inner side of the positioning plate 4.

[0050] Preferably, in order to install the specimen 8 during use, a specimen support plate 511 is integrally formed at the bottom of the left specimen mounting box 51, and the right specimen mounting box 52 is slidably mounted on the specimen support plate 511. After being subjected to the horizontal shear force applied by the hydraulic component 31, the right specimen mounting box 52 moves in the direction in which the shear force is applied by the specimen support plate 511.

[0051] Preferably, in order to facilitate the preparation of specimens 8 using the specimen box 5 as described in this application or to conduct shear or tensile tests on specimens 8 with high moisture content, a plurality of water-permeable holes 5111 are also provided on the specimen tray 511.

[0052] Preferably, to prevent the specimen 8 from being moved or affected during the movement and installation of the specimen box 5 after it has been installed on the specimen box 5, thus ensuring the experimental accuracy of the specimen 8, a tensioning member 53 is also installed on the left specimen mounting box 51 and the right specimen mounting box 52. In use, the tensioning member 53 is used to connect the left specimen mounting box 51 and the right specimen mounting box 52, which facilitates the installation and adjustment of the specimen box 5.

[0053] Preferably, in order to facilitate use with the structural soil tensile testing mechanism 7 to conduct tensile tests on the specimen 8, screw holes 521 are also provided on the left specimen mounting box 51 and the right specimen mounting box 52.

[0054] Preferably, the pulling member 53 includes a first pulling rod 531 and a second pulling rod 532, wherein both the first pulling rod 531 and the second pulling rod 532 are L-shaped structures. The inserts 535 at the ends of the first pulling rod 531 and the second pulling rod 532 cooperate with the slots 54 provided on the left specimen mounting box 51 and the right specimen mounting box 52. The first pulling rod 531 is provided with a telescopic groove 5312. The second pulling rod 532 is movably inserted into the telescopic groove 5312 through a telescopic component and a locking component, connecting the left specimen mounting box 51 and the right specimen mounting box 52.

[0055] Preferably, to facilitate adjustment of the telescopic length of the second traction rod 532 within the telescopic groove 5312, the telescopic assembly is designed to include a second adjusting wheel 534 and a gear 536. The second adjusting wheel 534 is rotatably mounted on the first traction rod 531 via a bearing, and the connecting shaft of the second adjusting wheel 534 passes through the central hole of the gear 536 and is fixedly connected to the gear 536. The gear 536 is rotatably mounted within the telescopic groove 5312 and meshes with a rack located on the lower side of the second adjusting groove 5322 on the second traction rod 532. That is, in use, the telescopic length of the second traction rod 532 within the telescopic groove 5312 is adjusted by manually rotating the second adjusting wheel 534, so that the inserts 535 at both ends connect and tighten the left specimen mounting box 51 and the right specimen mounting box 52, which also facilitates the installation of specimen boxes 5 of different specifications.

[0056] Preferably, to prevent changes in the extension length of the second traction rod 532 within the telescopic groove 5312 due to external movement after adjustment, the locking component is designed as a locking block 533. The locking block 533 is installed in the second mounting groove 5311 on the upper side of the first traction rod 531 via a pin. A one-way locking tooth is provided on the lower side of the locking block 533, which cooperates with the one-way locking rack 5321 on the upper side of the second traction rod 532. That is, when the one-way locking tooth is engaged in the one-way locking rack 5321, the locking block 533 and the second traction rod 532 can be locked relative to each other, preventing the second traction rod 532 from sliding out of the telescopic groove 5312 due to external movement, thus ensuring the protective effect of the left specimen mounting box 51 and the right specimen mounting box 52 on the specimen 8.

[0057] The usage process and operating principle of the structural soil two-body loading device described in this embodiment include:

[0058] After the specimen 8 is installed in the specimen box 5, the inserts 535 at the ends of the first pull rod 531 and the second pull rod 532 are inserted into the slots 54 as needed. The second adjusting wheel 534 is rotated as needed to adjust the extension length of the second pull rod 532 in the telescopic groove 5312, so that the inserts 535 at both ends connect and tighten the left specimen mounting box 51 and the right specimen mounting box 52, and the left specimen mounting box 51 and the right specimen mounting box 52 are used to protect the specimen 8. After installation, the position of the specimen box 5 on the sliding bead plate 26 is finely adjusted according to the experimental needs. During the horizontal shearing experiment, the pull member 53 can be removed or the second adjusting wheel 534 can be loosened as needed, ensuring that the pull member 53 does not affect the horizontal shearing experiment.

[0059] Example 3: Unlike Example 1, to facilitate tensile testing of specimens using this device, the tensile testing mechanism 7 for the structural soil is designed to include a tension rope 72, a fixed pulley 73, a screw-connector 74, and a tension sensor 76.

[0060] The pulling rope 72 passes through the fixed pulley 73 located on the front side of the right specimen mounting box 52, and one end of the pulling rope 72 is connected to the screw connector 74, while the other end passes through the fixed pulley 73. Several weights 71 are provided at the end of the pulling rope 72.

[0061] The screw-in connector 74 is connected to the left specimen mounting box 51 and the right specimen mounting box 52 through the screw hole 521. The screw-in connector 74 on the right specimen mounting box 52 is connected to the pull rope 72, and the screw-in connector 74 on the left specimen mounting box 51 is connected to the force measuring plate 75 on the rear side of the left specimen mounting box 51 through the tension sensor 76. In use, the tension sensor 76 measures the force on the left specimen mounting box 51 under the action of tension. In use, by adding a weight 71 to the free end of the pull rope 72, the external tension on the specimen 8 gradually increases, thereby measuring the tensile strength of the specimen 8.

[0062] Preferably, in order to intuitively detect the weight 71 and part of the pulling rope 72 during use, a tension sensor 76 is also provided on the pulling rope 72 to measure the weight 71 and part of the pulling rope 72, so as to record the creep process of the specimen 8 after being subjected to tension, and then measure the relationship between the deformation capacity of the specimen 8 under tension and the applied load.

[0063] Preferably, in order to avoid the downward force of the pull rope 72 affecting the test progress, the installation height of the fixed pulley 73 is the same as the installation height of the screw connection 74, and a guide groove is provided on the fixed pulley 73, which is used to guide the pull rope 72 during use.

[0064] The usage process and operating principle of the structural soil two-body loading device described in this embodiment include:

[0065] First, screw connectors 74 are installed on the left specimen mounting box 51 and the right specimen mounting box 52. After the screw connectors 74 are installed, the specimen box 5 is placed on the sliding ball stencil 26 according to the operation of Embodiment 1 and Embodiment 2. After the position is adjusted, the specimen 8 is subjected to an external tensile force by adding a weight 71 to the free end of the tension rope 72. This is used to measure the tensile strength of the specimen 8. At the same time, the creep process of the specimen 8 after being subjected to tensile force is recorded by the tensile force sensor 76, and then the relationship between the deformation capacity of the specimen 8 under tensile force and the applied load is measured.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A structural soil two-body loading push-shear device, characterized in that: The utility model relates to a structural soil shear and tensile test device, including base, the test piece box, structural soil shear measuring mechanism and structural soil tensile measuring mechanism of setting on the base, wherein The base is a "cross" mounting seat, and a guide plate is arranged on the base along the length direction of the base, and a first adjusting groove is symmetrically arranged on the guide plate along the length direction of the guide plate; The test piece box is movably arranged on the sliding pearl plate between the two first adjusting grooves, and includes a left test piece mounting box and a right test piece mounting box which are used in cooperation, the left test piece mounting box and the right test piece mounting box are used in cooperation with the structural soil shear measuring mechanism and the structural soil tensile measuring mechanism, and a test piece is arranged in the test piece box; The structural soil shear measuring mechanism is movably arranged in the first adjusting groove through an adjusting assembly, and includes a horizontal loading assembly and a horizontal positioning assembly which are used in cooperation, and the horizontal loading assembly and the horizontal positioning assembly are used in cooperation with the test piece box; The adjusting assembly includes a threaded adjusting rod, a first adjusting wheel and a sliding block, the first adjusting wheel is arranged at the end of the threaded adjusting rod, the threaded adjusting rod is arranged on the guide plate through a bearing, and is screw-connected with the sliding block, the sliding block is driven to slide along the first adjusting groove by rotating the first adjusting wheel, and the horizontal loading assembly and the horizontal positioning assembly are arranged on the sliding block; the horizontal loading assembly is a hydraulic part, the horizontal positioning assembly is a positioning column, and the positioning column and the hydraulic part are arranged on the sliding block through fixing parts, and the positioning column and the hydraulic part are arranged at the same height; The structural soil tensile measuring mechanism is arranged in the middle of the base along the width direction of the base, and is used in cooperation with the test piece box; The test piece box further includes a pulling member, the pulling member includes a first pulling rod and a second pulling rod, the first pulling rod and the second pulling rod are both L-shaped structures, the plug arranged at the end of the first pulling rod and the second pulling rod is used in cooperation with the slot arranged on the left test piece mounting box and the right test piece mounting box, a telescopic slot is arranged on the first pulling rod, the second pulling rod is movably arranged in the telescopic slot through a telescopic assembly and a locking assembly, and the left test piece mounting box and the right test piece mounting box are connected; The telescopic assembly includes a second adjusting wheel and a gear, the second adjusting wheel is arranged on the first pulling rod through a bearing, the connecting shaft of the second adjusting wheel is fixedly connected with the gear by penetrating the center hole of the gear, the gear is arranged in the telescopic slot, and the gear is meshed with the rack arranged on the lower side of the second adjusting slot of the second pulling rod; the locking assembly is a locking pressing block, the locking pressing block is arranged in the second mounting slot on the upper side of the first pulling rod through a pin shaft, and a one-way locking tooth is arranged on the lower side of the locking pressing block and is used in cooperation with the one-way locking rack arranged on the upper side of the second pulling rod.

2. The apparatus according to claim 1, wherein: The end of the piston rod of the positioning column and the hydraulic part is provided with a pressure sensor, and the pressure sensor acts on the loading hole of the left test piece mounting box and the right test piece mounting box.

3. The apparatus according to claim 1, wherein: A first clamping groove is arranged in the middle of the guide plate, the sliding pearl plate is detachably arranged on the first clamping groove, a plurality of embedded holes are arranged in the first clamping groove, a sliding pearl is movably arranged in the embedded hole, the upper end surface of the sliding pearl extends out of the hollow hole on the sliding pearl plate, and is used in cooperation with the test piece box.

4. The apparatus of claim 1, wherein: The base is further provided with a positioning plate, the lower end of the positioning plate is provided with a clamping block matched with a first guide slot arranged on the base, the first guide slot is arranged along the length direction of the base, and the positioning plate, the left test piece mounting box and the right test piece mounting box are all provided with connecting holes matched with each other; and the guide plate is further provided with a second guide slot along the length direction of the guide plate, the left test piece mounting box and the right test piece mounting box are provided with a third guide slot, and the second guide slot and the third guide slot are matched with a limiting strip arranged on the inner side of the positioning plate.

5. The apparatus of claim 1, wherein: The left test piece mounting box is further integrally provided with a test piece supporting plate at the bottom, the right test piece mounting box is slidably arranged on the test piece supporting plate, a plurality of water permeable holes are arranged on the test piece supporting plate, and screw holes are further arranged on the left test piece mounting box and the right test piece mounting box, the screw holes are matched with a structural soil tensile measurement mechanism.

6. A two-body loading push-shear device for structural soils according to claim 5, characterized in that: The structural soil tensile measurement mechanism comprises a pulling rope, a fixed pulley, a screw connecting piece and a tension sensor, the pulling rope is arranged through the fixed pulley arranged on the front side of the right test piece mounting box, one end of the pulling rope is connected with the screw connecting piece, the other end is arranged through the fixed pulley, and a plurality of weights are arranged at the end of the pulling rope; the screw connecting piece is connected with the test piece box through the screw hole, the screw connecting piece arranged on the right test piece mounting box is connected with the pulling rope, the screw connecting piece arranged on the left test piece mounting box is connected with a force plate arranged on the rear side of the left test piece mounting box through the tension sensor, and a tension sensor is further arranged on the pulling rope.

7. A two-body loading push-shear device for structural soils according to claim 6, characterized in that: The installation height of the fixed pulley is the same as that of the screw connecting piece, and a guide slot is arranged on the fixed pulley matched with the pulling rope.

Images