Early strength blade shear test device and method for laboratory concrete

Abstract

The present application relates to a kind of laboratory concrete early strength blade shear test device, comprising: test table, shear test system and data monitoring system;The shear test system is arranged on the test table, to detect the sample on the test table;The data monitoring system is arranged on the shear test system to collect test data;The shear test system and the data monitoring system are connected with the computer control in laboratory.The concrete early strength blade shear test device provided by the present application realizes the automatic control of cross plate penetration, shear, and the real-time continuous intelligent monitoring of shear parameters, avoids the influence of human subjective factors, so the evaluation result is more reliable, ensures the accuracy of test result.

Description

Technical Field

[0001] This invention belongs to the field of underground engineering testing technology, and in particular relates to a laboratory-use concrete early strength blade shear test device and test method. Background Technology

[0002] Currently, there is no suitable method for early strength testing of shotcrete in tunnels. Existing methods for testing concrete strength (not early strength) are mainly divided into non-destructive testing (NDT) and destructive testing (DDT) methods. NDT methods include rebound hammer testing, ultrasonic testing, and ground-penetrating radar testing. Although NDT methods do not damage concrete components, the data they provide is only indirect and requires conversion to obtain the actual concrete strength, resulting in significant errors. DDT methods include core drilling and pull-out testing, both of which damage concrete structures. Core drilling involves sending samples to a laboratory for testing. Compared to NDT methods, DDT methods provide a more direct and accurate measurement of concrete strength. However, to date, the academic and engineering fields are still in a semi-empirical, semi-theoretical stage of development. Obtaining the shear strength of initial shotcrete through vane testing is fundamental for further analysis, calculation, and safe construction. Therefore, further research on in-situ shear strength testing of initial shotcrete is of great significance for engineering construction and academic research. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the existing technical problems, this invention provides a laboratory-use concrete early strength blade shear test device and method, which solves the technical problem of difficulty in testing the shear strength of concrete in the prior art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] A laboratory-grade concrete early strength blade shear test device includes: a test bench, a shear test system, and a data monitoring system;

[0008] The shear testing system is set on the test bench and is used to test the sample on the test bench;

[0009] The data monitoring system is installed on the shear test system to collect test data;

[0010] Both the shear testing system and the data monitoring system are connected to a computer control system in the laboratory.

[0011] The test bench includes: a cubic frame, a sample positioning assembly, and a shear test system support mechanism;

[0012] The sample positioning component is fixedly installed at the bottom of the cubic frame and is fixedly connected to the bottom edge of the cubic frame.

[0013] The cubic frame is also equipped with a left column mechanism and a right column mechanism;

[0014] The left column mechanism connects to the upper and lower borders on the left side of the cube-shaped frame;

[0015] The right column mechanism connects to the upper and lower borders on the right side of the cubic frame;

[0016] The shear test system is connected to the left column mechanism and the right column mechanism, and is set within the cubic frame by means of the left column mechanism and the right column mechanism.

[0017] Preferably, the left column mechanism includes: a left column, a dual-axis linear motion guide rail, and a first four-wheel locking slider;

[0018] The upper and lower ends of the left column are respectively connected to the upper and lower borders on the left side of the cube-shaped frame;

[0019] The dual-axis linear motion guide rail is vertically mounted on the left column and located on the side of the left column facing the cubic frame.

[0020] The first four-wheel locking slider is mounted on the dual-axis linear motion guide rail and can slide or lock on the dual-axis linear motion guide rail to stop.

[0021] The first four-wheel locking slider is also connected to the shear test system.

[0022] Preferably, the right column mechanism includes: a right column, a linear lead screw module, and a second and fourth wheel locking slider;

[0023] The upper and lower ends of the right column are respectively connected to the upper and lower borders of the right side of the cube-shaped frame;

[0024] The linear lead screw module is vertically mounted on the right column and located on the side of the right column facing the cubic frame;

[0025] The second and fourth wheel locking slider is disposed on the linear screw module and can slide or lock on the linear screw module to stop;

[0026] The second and fourth wheel locking sliders are also connected to the shear test system.

[0027] Preferably, the right column mechanism further includes: a gear reducer and a handwheel;

[0028] The gear reducer is mounted on the linear lead screw module and is drivenly connected to the linear lead screw module;

[0029] The handwheel is driven by the shaft of the gear reducer and can drive the linear lead screw module through the gear reducer to move the shear test system up and down.

[0030] Preferably, the shearing test system includes: a servo motor, a reducer, a drill chuck, a drive shaft assembly fixing bracket, a fixed support base, and a blade cross plate;

[0031] The servo motor is driven and connected to the reducer.

[0032] The drive shaft assembly of the reducer is driven to the drill chuck;

[0033] The drill chuck is driven to connect with the blade cross plate;

[0034] The drive shaft assembly fixing clamp is fixedly mounted on the fixing support base;

[0035] The drive shaft assembly of the speed reducer is fixed to the drive shaft assembly fixing plate.

[0036] Preferably, the two ends of the fixed support are respectively connected to the first four-wheel locking slider and the second four-wheel locking slider.

[0037] Preferably, the data monitoring system includes: a data acquisition component and a sensor component;

[0038] Both the data acquisition component and the sensor component are mounted on the shear test system;

[0039] The data acquisition component is controlled to be connected to the sensor component;

[0040] The data acquisition component is also connected to a computer in the laboratory.

[0041] Preferably, the blade crossplate includes: a crossplate connecting rod and shearing side wings around the cylinder;

[0042] The bottom end of the cross plate connecting rod is fixedly connected to the top of the shearing side wings around the cylinder;

[0043] The top end of the cross plate connecting rod is fixedly connected to the drill chuck.

[0044] Preferably, the sample positioning assembly includes: a vertical support beam for the sample and a sample positioning clamping mechanism;

[0045] The two ends of the vertical support beam of the sample are fixedly connected to the bottom frame of the cubic frame.

[0046] The sample positioning and clamping mechanism is installed on the vertical support beam of the sample and can fix the sample on the vertical support beam of the sample.

[0047] A test method for a laboratory-use concrete early strength blade shear test device includes the following steps:

[0048] Step 1: Insert the vane into the test sample;

[0049] Step 2: Cut and collect data;

[0050] Step 3: Cut data processing and display.

[0051] (III) Beneficial Effects

[0052] The apparatus and method provided in this application are easy to operate and have data-driven and information-based characteristics, automatically calculating and displaying concrete strength in real time.

[0053] The vane shearing device in this application realizes automatic control of vane penetration and shearing, and real-time continuous intelligent monitoring of shearing parameters, avoiding the influence of human subjective factors, thus making the evaluation results more reliable and ensuring the accuracy of the test results.

[0054] The vane shearing device in this application uses a fixed base, and the height of the shearing device can be adjusted by a handwheel and a reducer, which makes it convenient for the operator to install the vane at the end of the probe. The gear reducer can be equipped with a motor to realize a vane shearing test device in both manual and electric modes. Attached Figure Description

[0055] Figure 1 A schematic diagram of the vane blade structure of a laboratory concrete early strength blade shear test device provided by the present invention.

[0056] Figure 2 A schematic diagram of a laboratory concrete early strength blade shear test device provided by the present invention;

[0057] Figure 3 A top view of a laboratory concrete early strength blade shear test device provided by the present invention;

[0058] Figure 4 A front view of a laboratory concrete early strength blade shear test device provided by the present invention;

[0059] Figure 5 A side view of a laboratory concrete early strength blade shear test device provided by the present invention;

[0060] Figure 6 A partial view of a laboratory concrete early strength blade shear test device provided by the present invention;

[0061] Figure 7 A partial view of a laboratory concrete early strength blade shear test device provided by the present invention.

[0062] [Explanation of Labels in the Attached Image]

[0063] 1: Servo motor; 2: Test bench; 3: Reducer; 4: Linear lead screw module; 5: Gear reducer; 6: Handwheel; 7: Right column; 8: Sample; 91: Sample positioning and clamping mechanism; 92: Frame fastening angle bracket; 10: Sample vertical support beam; 11: Blade cross plate; 12: Drill chuck; 13: Drive shaft assembly fixing bracket clamp; 14: Fixed support seat; 15: Dual-axis linear motion guide rail; 16: First and fourth wheel locking slider. Detailed Implementation

[0064] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] Example 1

[0066] like Figures 1-7 As shown: This embodiment discloses a laboratory concrete early strength blade shear test device, including: test bench 2, shear test system and data monitoring system.

[0067] The shear testing system is installed on the test bench 2 to test the sample on the test bench 2; the data monitoring system is installed on the shear testing system to collect test data; both the shear testing system and the data monitoring system are connected to a computer control system in the laboratory.

[0068] The test bench 2 includes a cubic frame, a sample positioning assembly, and a shear test system support mechanism. The sample positioning assembly is fixedly disposed at the bottom of the cubic frame and fixedly connected to the bottom edge of the cubic frame. The cubic frame is also provided with a left column mechanism and a right column mechanism. The left column mechanism is connected to the upper and lower edges of the left side of the cubic frame. The right column mechanism is connected to the upper and lower edges of the right side of the cubic frame. The shear test system is connected to the left column mechanism and the right column mechanism and is disposed within the cubic frame by means of the left column mechanism and the right column mechanism.

[0069] The left column mechanism described in this embodiment includes: a left column, a dual-axis linear motion guide rail 15, and a first four-wheel locking slider 16.

[0070] Specifically, the upper and lower ends of the left column are connected to the upper and lower borders of the left side of the cubic frame, respectively; the dual-axis linear motion guide rail 15 is vertically mounted on the left column and located on the side of the left column facing the cubic frame; the first four-wheel locking slider 16 is mounted on the dual-axis linear motion guide rail 15 and can slide or lock on the dual-axis linear motion guide rail 15; the first four-wheel locking slider 16 is also connected to the shear test system.

[0071] In this embodiment, the right column mechanism includes: a right column 7, a linear lead screw module 4, and a second and fourth wheel locking slider. The upper and lower ends of the right column 7 are respectively connected to the upper and lower borders of the right side of the cubic frame; the linear lead screw module 4 is vertically mounted on the right column 7 and located on the side of the right column 7 facing the cubic frame; the second and fourth wheel locking slider is mounted on the linear lead screw module 4 and can slide or lock on the linear lead screw module 4; the second and fourth wheel locking slider is also connected to the shear test system.

[0072] In this embodiment, the right column mechanism further includes a gear reducer 5 and a handwheel 6. The gear reducer 5 is mounted on the linear lead screw module 4 and is driven to be connected to the linear lead screw module 4. The handwheel 6 is driven to be connected to the shaft of the gear reducer 5 and can drive the linear lead screw module 4 to move the shear test system up and down through the gear reducer 5.

[0073] The shearing test system described in this embodiment includes: a servo motor 1, a reducer 3, a drill chuck 12, a drive shaft assembly fixing plate 13, a fixed support base 14, and a blade cross plate 11; the servo motor 1 is drivenly connected to the reducer 3; the drive shaft assembly of the reducer 3 is drivenly connected to the drill chuck 12; the drill chuck 12 is drivenly connected to the blade cross plate 11; the drive shaft assembly fixing plate 13 is fixedly mounted on the fixed support base 14; and the drive shaft assembly of the reducer 3 is fixed on the drive shaft assembly fixing plate 14.

[0074] In this embodiment, the two ends of the fixed support base 14 are respectively connected to the first four-wheel locking slider 16 and the second four-wheel locking slider.

[0075] The data monitoring system includes a data acquisition component and a sensor component; both the data acquisition component and the sensor component are mounted on the shear test system; the data acquisition component is controlled to connect with the sensor component; the data acquisition component is also connected to a computer in the laboratory.

[0076] In this embodiment, the blade cross plate 11 includes: a cross plate connecting rod and shearing wings around the cylinder; the bottom end of the cross plate connecting rod is fixedly connected to the top of the shearing wings around the cylinder; and the top end of the cross plate connecting rod is fixedly connected to the drill chuck.

[0077] The sample positioning assembly described in this embodiment includes: a sample vertical support beam 10 and a sample positioning clamping mechanism 91; both ends of the sample vertical support beam 10 are fixedly connected to the bottom frame of the cubic frame; the sample positioning clamping mechanism 91 is disposed on the sample vertical support beam 10 and can fix the sample 8 on the sample vertical support beam 10.

[0078] It should be noted that the laboratory concrete early strength blade shear test device disclosed in this embodiment includes a test bench 2 (including an aluminum profile frame structure). A dual-axis linear motion guide rail 15 is fixed on the left column of the test bench 2, and a linear screw module 4 is fixed on the right column 7. A first four-wheel locking slider 16 is connected to the left dual-axis linear motion guide rail 15, and a second four-wheel locking slider is also installed on the linear screw module 4. A gear reducer 5 is installed on the linear screw module 4, and a handwheel 6 is connected to the gear reducer 5 through a shaft. The left and right locking sliders are bolted to a fixed support seat 14. The fixed support seat 14 is bolted to a cross plate shearing device through a transmission shaft assembly fixing bracket clamp 13. The cross plate shearing device consists of a servo motor 1 shaft connected to a reducer 3, a reducer 3 shaft connected to a torque sensor, and a torque sensor connected to a bearing structure connected to a cross plate to form a cross plate shearing mechanism.

[0079] The test bench 2 is a frame structure, with the frame composed of aluminum profile rods connected by angle brackets. Each of the left and right crossbeams has a column. The left column has a fixedly mounted dual-axis linear motion guide rail 15 and a first four-wheel locking slider 16. The right column has a fixedly mounted linear screw module 4 and a second four-wheel locking slider. The linear screw module 4 is connected to a gear reducer 5 via a shaft, and the gear reducer 5 is connected to a handwheel 6 via a shaft. Each of the lower middle vertical beams of the frame structure has an angle bracket component, including a tightening bolt and a clamping plate, forming a concrete block fixing and sample positioning clamping mechanism 91. The concrete or soil sample to be tested is fixed by the sample positioning clamping mechanism 91; the cross-plate shearing test position can be adjusted by simultaneously adjusting the position of the angle brackets on the left and right columns. The dual-axis linear motion guide rail 15 and the linear screw module 4 are respectively bolted to the right and left sides of the vertical beams of the left and right columns of the test bench 2. The first four-wheel locking slider 16 is installed on the dual-axis linear motion guide rail 15; the left slider can slide freely in the guide rail, and the right second four-wheel locking slider moves up and down by shaking the handwheel 6. The fixed support 14 is connected to the first four-wheel locking slider 15 and the second four-wheel locking slider by fastening bolts. The fixed support 14 has a through hole in the middle, the diameter of which is slightly larger than the outer diameter of the cross-plate drill chuck 12 connecting shaft assembly. The fixed support 14 is fixed to the cross-plate shearing assembly by tightening the bolts through the drive shaft assembly fixing bracket clamp. The cross-plate shearing assembly is driven by the servo motor 1. The servo motor 1 is connected to the reducer 3 through the shaft to realize the adjustment and control of the shearing speed. The reducer 3 is connected to the torque sensor through the shaft to realize the real-time monitoring of the torque during the shearing process. The servo motor 1 and the torque sensor are connected to the data acquisition and control computer to realize the intelligent control of the entire shearing test.

[0080] When the handwheel 6 is rotated, the slider on the linear lead screw slides downward, driving the first four-wheel locking slider 16 on the left guide rail to move downward. The cross plate contacts and abuts against the concrete and soil. Continue to rotate the handwheel 6 so that the cross plate penetrates to the specified depth. At this time, the control computer can start the motor to conduct a cross plate shearing test and monitor and record the shearing parameters.

[0081] This embodiment also discloses a test method for a laboratory-use concrete early strength blade shear test device, including the following steps:

[0082] Step 1: Insert the vane into the test sample;

[0083] Step 2: Cut and collect data;

[0084] Step 3: Cut data processing and display.

[0085] Specifically, step 1 includes: inserting the vane into the test specimen; moving the concrete and soil specimen 8 to the test position on the test bench 2; adjusting the clamping mechanism to fix the specimen to be tested; and moving the clamping mechanism left and right to adjust the marking point on the specimen to be directly below the vane. The handwheel is turned, causing the vane to settle under load to penetrate the specimen to the specified depth. Then, the locking slider is tightened to prevent slippage.

[0086] Step 2 includes: shearing data acquisition. Through the computer control system, appropriate shearing parameters are selected and set according to the type of object being sheared. The motor is started to conduct a shearing test, and the shearing data is recorded in real time by the sensors.

[0087] Step 3 includes: shear data processing. The shear data can be displayed in real time on the computer control system to measure the torque magnitude, and output the shear strength and shear curves (shear rate-time curve, shear angle-time curve, etc.) according to the built-in shear strength formula.

[0088] The shear strength formula is calculated based on the dimensions of the vane. It is assumed that during the rotation of the vane, a cylindrical shear failure surface with height H (vane height) and diameter D (vane width) is generated in the soil. The maximum moment at the measuring point is used to calculate the undrained shear strength C of the soil. U .

[0089] Example 2

[0090] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 A laboratory concrete early strength blade shear test device mainly consists of three parts: a test bench 2, a shear test system, and a data monitoring system. The shear test system mechanism is fixed on the test bench 2 by the left-side double-axis linear motion guide rail 15 and linear screw module 4. By adjusting the rotating handwheel 6, the cross plate penetrates to a specified depth. The servo motor 1 controls the shear test, and the monitoring system can monitor the change of torque during the shear process.

[0091] refer to Figure 1 The structure of the blade cross plate 11 is shown in the figure. During the rotation of the cross blade, a cylindrical shearing surface with a height of H (blade height) and a diameter of D (blade width) is generated. It includes side wings for shearing around the cylinder, bottom ends for cutting the cylinder, and cross plate connecting rods.

[0092] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5The test apparatus frame has a vertical column fixed to the middle of each of the left and right crossbeams. To the right of the left vertical column is a double-axis linear motion guide rail 15, bolted to it; to the left of the right vertical column is a linear lead screw module 4, bolted to it, creating a symmetrical arrangement. Both the double-axis linear motion guide rail 15 and the linear lead screw module 4 are equipped with four locking sliders, each with locking bolts to prevent vertical sliding when locked. The linear lead screw module 4 is shaft-connected to a gear reducer 5, and the gear reducer shaft is connected to a handwheel 6.

[0093] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The slider on the dual-axis linear motion guide rail 15 and the slider on the linear lead screw module 4 are fixedly connected by bolts to a fixed support seat 14. The fixed support seat 14 has a crescent-shaped through hole in the middle, and the hole diameter is slightly larger than the outer diameter of the drill chuck 12 connecting the drill chuck shaft. The drive shaft assembly fixing bracket clamping plate 13 is connected to the fixed support seat 14 by bolts through the middle hole to clamp the drive shaft assembly.

[0094] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 Viewed from the perspective, as handwheel 6 rotates, the slider on the linear lead screw module 4 slides downward, causing the four-wheel locking slider on the left guide rail to move downward. The cross plate contacts and abuts against the concrete and soil. Continue rotating handwheel 6 so that the cross plate penetrates to the specified depth, ready for the shear test.

[0095] refer to Figure 2 ,by Figure 3 Viewed from the perspective of the test device, a sample positioning and clamping mechanism 91 is fixed on the transverse beam at the lower end of the frame of the early strength blade shear test device for concrete in the laboratory. It is fixed by a stud, which passes through the bolt hole of the corner bracket and is connected to a clamping plate at the front end of the stud. The clamping force of the tightening bolt is applied to the sample 8 to fix the concrete or soil sample and prevent the sample from jumping during the spiral penetration test, which would affect the accuracy of the test results.

[0096] After the vane is inserted to the specified depth, the test parameters are adjusted by the control computer, and the servo motor 1 is started to carry out the vane shear test. The shear data is monitored by the monitoring sensor, the torque is displayed in real time, and the shear strength and shear curve (shear rate-time curve, shear angle-time curve, etc.) are output according to the built-in shear strength formula.

[0097] This embodiment also discloses a method for testing the shear strength of concrete or soil using the aforementioned laboratory-grade concrete early strength blade shear test device, referencing... Figure 1 During the shear test, shear data is obtained by monitoring, and the data can be substituted into the strength curve to perform strength testing.

[0098] Step 1: Insert the vane into the test sample;

[0099] Step 2: Acquire shear data (set control parameters, start motor);

[0100] Step 3: Data processing and display;

[0101] Specifically, the calculation formula for shear strength and the process of establishing the optimized mathematical model include: This invention uses a proposed multi-dimensional analysis method, based on the law of conservation of energy, to obtain the relationship between shear torque T and concrete shear strength C. U The relationship curves between parameters were obtained, and the results were optimized using a mathematical model algorithm. During the rotation of the cross-shaped blade, a cylindrical shear failure surface with height H (blade height) and diameter D (blade width) was assumed to be generated in the soil. The maximum moment at the measuring point was used to calculate the undrained shear strength C of the soil. U According to the law of conservation of energy, the soil's resistance to torsional damage consists of two parts: the resisting moment T1 on the side surface of the cylinder and the resisting moment T2 on the top and bottom surfaces of the cylinder. That is, T = T1 + T2.

[0102] The torque resisting force on the side of the cylinder is:

[0103]

[0104] The torque resisting the base of the cylinder is:

[0105]

[0106] Where D and H are the width and height of the blade, and D1 is the diameter of the shaft at the contact point with the blade (D1 << D):

[0107]

[0108] Shear strength:

[0109]

[0110] Where: T is the measured torque, and D and H are the width and height of the blade.

[0111] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A laboratory-grade concrete early-strength blade shear test device, characterized in that, include: Test bench, shear testing system and data monitoring system; The shear testing system is set on the test bench and is used to test the sample on the test bench; The sample is a blade-cross plate structure; The cross-shaped structure can generate a cylindrical shear surface with a height of H and a diameter of D during rotation; The cross plate structure includes sheared side wings around the cylinder, cut bottom ends at the top and bottom of the cylinder, and cross plate connecting rods. The data monitoring system is installed on the shear test system to collect test data; Both the shear testing system and the data monitoring system are connected to a computer control system in the laboratory. The test bench includes: a cubic frame, a sample positioning assembly, and a shear test system support mechanism; The sample positioning component is fixedly installed at the bottom of the cubic frame and is fixedly connected to the bottom edge of the cubic frame. The cubic frame is also equipped with a left column mechanism and a right column mechanism; The left column mechanism connects to the upper and lower borders on the left side of the cube-shaped frame; The right column mechanism connects to the upper and lower borders on the right side of the cubic frame; The shear test system is connected to the left column mechanism and the right column mechanism, and is set within the cubic frame by means of the left column mechanism and the right column mechanism.

2. The apparatus according to claim 1, characterized in that, The left column mechanism includes: a left column, a dual-axis linear motion guide rail, and a first four-wheel locking slider; The upper and lower ends of the left column are respectively connected to the upper and lower borders on the left side of the cube-shaped frame; The dual-axis linear motion guide rail is vertically mounted on the left column and located on the side of the left column facing the cubic frame. The first four-wheel locking slider is mounted on the dual-axis linear motion guide rail and can slide or lock on the dual-axis linear motion guide rail to stop. The first four-wheel locking slider is also connected to the shear test system.

3. The apparatus according to claim 2, characterized in that, The right column mechanism includes: a right column, a linear lead screw module, and a second and fourth wheel locking slider; The upper and lower ends of the right column are respectively connected to the upper and lower borders of the right side of the cube-shaped frame; The linear lead screw module is vertically mounted on the right column and located on the side of the right column facing the cubic frame; The second and fourth wheel locking slider is disposed on the linear screw module and can slide or lock on the linear screw module to stop; The second and fourth wheel locking sliders are also connected to the shear test system.

4. The apparatus according to claim 3, characterized in that, The right column mechanism further includes: a gear reducer and a handwheel; The gear reducer is mounted on the linear lead screw module and is drivenly connected to the linear lead screw module; The handwheel is driven by the shaft of the gear reducer and can drive the linear lead screw module through the gear reducer to move the shear test system up and down.

5. The apparatus according to claim 4, characterized in that, The shear test system includes: a servo motor, a reducer, a drill chuck, a drive shaft assembly fixing bracket, a fixed support base, and a blade cross plate; The servo motor is driven and connected to the reducer. The drive shaft assembly of the reducer is driven to the drill chuck; The drill chuck is driven to connect with the blade cross plate; The drive shaft assembly fixing clamp is fixedly mounted on the fixing support base; The drive shaft assembly of the speed reducer is fixed to the drive shaft assembly fixing plate.

6. The apparatus according to claim 5, characterized in that, The two ends of the fixed support are respectively connected to the first four-wheel locking slider and the second four-wheel locking slider.

7. The apparatus according to claim 6, characterized in that, The data monitoring system includes: a data acquisition component and a sensor component; Both the data acquisition component and the sensor component are mounted on the shear test system; The data acquisition component is controlled to be connected to the sensor component; The data acquisition component is also connected to a computer in the laboratory.

8. The apparatus according to claim 7, characterized in that, The blade cross plate includes: a cross plate connecting rod and shearing side wings around the cylinder; The bottom end of the cross plate connecting rod is fixedly connected to the top of the shearing side wings around the cylinder; The top end of the cross plate connecting rod is fixedly connected to the drill chuck.

9. The apparatus according to claim 8, characterized in that, The sample positioning assembly includes: a vertical support beam for the sample and a sample positioning clamping mechanism. The two ends of the vertical support beam of the sample are fixedly connected to the bottom frame of the cubic frame. The sample positioning and clamping mechanism is installed on the vertical support beam of the sample and can fix the sample on the vertical support beam of the sample.

10. A test method based on the laboratory concrete early strength blade shear test apparatus as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Insert the vane into the test sample; Step 2: Cut and collect data; Step 3: Cut data processing and display.

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