High-toughness performance quality detection and analysis system for ultra-high performance concrete

Abstract

The invention belongs to the technical field of concrete quality detection and analysis, and particularly discloses an ultra-high performance concrete high-toughness performance quality detection and analysis system. Comprising a concrete vibration laying module, a concrete vibration detection module, a concrete vibration analysis module, a concrete mechanical laying module, a concrete mechanical detection module, a concrete mechanical analysis module, a concrete quality confirmation module and a concrete quality feedback terminal. The vibration test and the mechanical test of the concrete are analyzed according to the vibration detection and the mechanical detection of the concrete, the reliability of the quality analysis of the high-toughness performance of the concrete is guaranteed, and meanwhile, according to the length of the concrete, microscopic images before the test, after the test and after standing and the extrusion force of each test needle at each detection time point, the high-toughness performance of the concrete is obtained. The vibration test qualification coefficient of the concrete is analyzed, and the stability of the high-toughness performance of the concrete is guaranteed, so that the consistency of the high-toughness performance of the concrete is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete quality detection and analysis, and relates to an ultra-high performance concrete high-toughness quality detection and analysis system. Background Art

[0002] Ultra-high performance concrete is a new type of cement-based composite material with ultra-high strength, high durability and excellent toughness. In many important projects, such as bridges, high-rise buildings, nuclear power plants, etc., the safety of concrete structures is crucial. The high toughness of ultra-high performance concrete enables it to better resist the development of cracks when bearing loads, thereby ensuring the stability and reliability of structural concrete under various working conditions. Therefore, it is necessary to conduct high-toughness quality testing and analysis on ultra-high performance concrete.

[0003] For example, the Chinese invention patent with publication number CN111189694A discloses a method for testing the fracture toughness of the interlayer interface of ballastless track, which includes the following steps: (1) preparing a concrete test block with a double-layer concrete structure containing interlayer cracks; (2) installing the concrete test block on a testing machine and installing at least one of a displacement sensor and a strain gauge; pre-tensioning the concrete test block, wherein the pre-tensioning load is a failure load with a value range of (0% to 20%]; (3) adjusting the measuring instrument, conducting a formal test, controlling the load speed at 0.1 to 1 mm / min, until the specimen is destroyed, and recording the failure load and the fracture position; (4) processing the test results and solving the fracture toughness; processing the test results according to the formula, and calculating the toughness of the concrete interlayer cracks, with an accuracy of 0.1 J / mm2. The present invention determines the fracture toughness of the interlayer interface of ballastless track based on the energy method, is suitable for elastic-plastic and different material combinations, and can provide a basis for determining the timing of hydraulic fracturing of the interlayer of CRTSⅠ double-block ballastless track in tunnels.

[0004] For example, the Chinese invention patent with publication number CN105043895B discloses a bending toughness test method and device for fiber concrete components. The bending toughness test device for concrete components is composed of a split Hopkinson pressure bar device to test the bending toughness of concrete specimens. First, the specimen is dynamically loaded; the curve of the accelerometer is recorded; it is characterized by the following steps: (1) the generalized inertial load acting in the middle of the specimen is used to replace the inertial force distributed on the specimen; (2) the real bending load is evaluated according to the dynamic equilibrium equation; (3) the dynamic load of the concrete specimen is calculated according to the one-dimensional stress wave theory; (4) the bending toughness of the fiber concrete component can be judged according to the amount of energy absorbed by the fiber concrete component. The present invention is simple to operate and has a high loading speed, and can effectively measure the toughness of fiber concrete components under high strain rates.

[0005] The above existing technologies have the following deficiencies: 1. The current detection and analysis of the high-toughness energy quality of concrete mainly focuses on the detection and analysis of the mechanical properties of concrete fracture toughness and bending toughness, without considering the vibration detection and analysis of concrete. The analysis dimension is relatively single, and thus the reliability of the high-toughness energy quality analysis of concrete cannot be guaranteed, and thus the accuracy of the high-toughness energy quality assessment of concrete cannot be guaranteed.

[0006] 2. The current analysis of the high-toughness quality of concrete mainly focuses on the macro level of concrete, that is, insufficient attention is paid to the micro level of concrete, which makes it impossible to guarantee the stability of the high-toughness of concrete, and thus the consistency of the high-toughness of concrete, and at the same time, the subsequent service life of concrete cannot be guaranteed. Summary of the invention

[0007] In view of this, in order to solve the problems raised in the above background technology, a high-toughness quality detection and analysis system for ultra-high performance concrete is proposed.

[0008] The purpose of the present invention can be achieved through the following technical scheme: The present invention provides an ultra-high performance concrete high-toughness quality detection and analysis system, including: a concrete vibration layout module, which is used to layout various test needles in concrete, and then layout the vibration test of concrete.

[0009] The concrete vibration detection module is used to detect the length of concrete, the microscopic images before, after and after the test, and the extrusion force of each test needle at each detection time point.

[0010] The concrete vibration analysis module is used to analyze the concrete vibration test qualification coefficient based on the length of the concrete, the microscopic images before, after and after the test, and the extrusion force of each test needle at each detection time point.

[0011] The concrete mechanical layout module is used to cut the concrete into individual concrete blocks after the vibration test is completed, and then arrange the mechanical test of each concrete block.

[0012] The concrete mechanics detection module is used to detect the mechanical test data of each concrete block, including the compressive strength of each concrete block at each failure load, the actual tensile strength of each concrete block, the number of cracks at each detection time point during each stretch, and the length of each crack.

[0013] The concrete mechanics analysis module is used to analyze the mechanical test qualification coefficient of concrete based on the mechanical test data of each concrete block.

[0014] The concrete quality confirmation module is used to confirm the high toughness quality qualification factor of concrete based on the vibration test qualification factor and mechanical test qualification factor of concrete.

[0015] The concrete quality feedback terminal is used to provide corresponding feedback based on the high toughness quality qualification coefficient of the concrete.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention analyzes the vibration test qualification coefficient and mechanical test qualification coefficient of concrete based on the vibration detection and mechanical detection of concrete, thereby breaking the current deficiency of not considering the vibration detection analysis of concrete, and comprehensively analyzing the high toughness quality qualification coefficient of concrete in multiple dimensions, avoiding the limitations of single-dimensional detection and analysis, thereby ensuring the reliability of concrete high toughness quality analysis, thereby ensuring the accuracy of concrete high toughness quality assessment.

[0017] (2) The present invention analyzes the vibration test pass coefficient of concrete based on the length of the concrete, the microscopic images before, after and after the test, and the extrusion pressure of each test needle at each detection time point, thereby avoiding the current lack of attention to the microscopic level of concrete, thereby ensuring the stability of the high toughness of concrete, thereby ensuring the consistency of the high toughness of concrete, and at the same time improving the subsequent service life of concrete.

[0018] (3) The present invention improves the comprehensiveness of concrete compressive performance analysis by calculating the qualified coefficient of concrete compressive performance according to the compressive strength of each concrete block at each failure load, thereby improving the concrete quality compliance rate and thus improving the safety of concrete structures.

[0019] (4) The present invention improves the accuracy of concrete tensile performance analysis by calculating the qualified coefficient of concrete tensile performance according to the actual tensile strength of each concrete block, the number of cracks at each detection time point during each stretching, and the length of each crack, thereby improving the pertinence of concrete tensile performance evaluation and the reliability of subsequent concrete high toughness quality evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the connection of each module of the system of the present invention.

[0022] Figure 2 Schematic diagram of the microscopic image of the concrete of the present invention.

[0023] Figure 3 It is a schematic diagram of the connection steps of the concrete mechanics test qualified coefficient analysis step of the present invention.

[0024] Figure numerals: 1. gravel, 2. sand, 3. cement stone, 4. pores. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 As shown, the present invention provides an ultra-high performance concrete high-toughness quality detection and analysis system, which includes: a concrete vibration layout module, a concrete vibration detection module, a concrete vibration analysis module, a concrete mechanics layout module, a concrete mechanics detection module, a concrete mechanics analysis module, a concrete quality confirmation module and a concrete quality feedback terminal.

[0027] In the above, the concrete vibration detection module is respectively connected to the concrete vibration layout module and the concrete vibration analysis module, the concrete vibration analysis module is respectively connected to the concrete mechanics layout module and the concrete quality confirmation module, the concrete mechanics detection module is respectively connected to the concrete mechanics layout module and the concrete mechanics analysis module, and the concrete quality confirmation module is also respectively connected to the concrete mechanics analysis module and the concrete quality feedback terminal.

[0028] The concrete vibration layout module is used to layout various test needles in concrete, and then to layout the vibration test of the concrete.

[0029] The concrete vibration detection module is used to detect the length of concrete, microscopic images before, after and after testing, and the squeezing force of each test needle at each testing time point.

[0030] The concrete vibration analysis module is used to analyze the vibration test qualification coefficient of concrete based on the length of the concrete, microscopic images before, after and after the test, and the extrusion force of each test needle at each detection time point.

[0031] It should be added that the microscopic images of concrete before, after and after vibration testing are obtained by an optical coherence tomography instrument placed above the concrete. Its working principle is as follows: The optical coherence tomography instrument is based on the principle of low-coherence interference. By measuring the interference signal of light reflected from the inside of the concrete, it obtains the microscopic structure information of different depth levels inside the concrete. When the concrete is subjected to a vibration test, the instrument can monitor the changes in the microstructure of the concrete during the vibration process in real time and convert this information into microscopic images.

[0032] It should be added that the extrusion pressure of each test needle in the concrete at each detection time point is detected by a pressure sensor installed on the top or connection part of each test needle. Its working principle is as follows: the pressure sensor is a device or apparatus that can sense the pressure signal and convert the pressure signal into a usable output electrical signal according to a certain rule. When detecting the extrusion pressure of the concrete test needle, the pressure sensor is installed on the top or connection part of the test needle. When the test needle is inserted into the concrete, the extrusion pressure of the concrete on the test needle will be transmitted to the pressure sensor. The pressure sensor converts the sensed extrusion pressure into corresponding electrical signals, such as voltage, current, etc., based on the internal piezoelectric effect, piezoresistive effect and other principles. These electrical signals are amplified, filtered and processed, and then transmitted to the data acquisition system for recording and analysis. Example: In practical applications, it is often used to detect concrete The pressure sensor of soil extrusion pressure is a strain gauge pressure sensor. The strain gauge is pasted on the elastic element. When the elastic element is subjected to the extrusion pressure transmitted by the concrete test needle, it will deform and cause the strain gauge pasted on it to deform as well, resulting in a change in the resistance value of the strain gauge. By measuring the change in the resistance value of the strain gauge and converting the resistance change into a voltage change using circuits such as a Wheatstone bridge, an electrical signal related to the concrete extrusion pressure is obtained. The electrical signal is amplified and filtered by a signal conditioning circuit and then transmitted to a data acquisition card. The data acquisition card samples the electrical signal at a set sampling frequency and converts the sampled data into digital signals and stores them in a computer. The digital signals stored in the computer are analyzed and processed using special data processing software to obtain the extrusion pressure values ​​of each test needle in the concrete at each detection time point.

[0033] See also Figure 2 As shown, for example, the analysis of the vibration test qualification coefficient of concrete includes: A1, based on the microscopic images of concrete before and after the test, statistically calculating the vibration deviation coefficient of concrete .

[0034] Furthermore, the statistical vibration deviation coefficient of concrete includes: A1-1, respectively extracting the position coordinates of each microscopic constituent phase from the microscopic images of concrete before and after the test, and then statistically analyzing the position deviation coefficient of concrete.

[0035] It should be added that the microscopic components of concrete refer to the basic parts that constitute the microscopic structure of concrete, including gravel, sand, cement stone and pores.

[0036] Furthermore, the position deviation coefficient of the statistical concrete includes: A1-1-1, according to the position coordinates of each microscopic component phase of the concrete before and after the test, the position deviation distance of each microscopic component phase in the concrete is obtained by the Euclidean distance formula.

[0037] A1-1-2. The ratio of the position deviation distance of each microscopic component phase in the concrete to the length of the concrete is taken as the position deviation coefficient of each microscopic component phase in the concrete.

[0038] A1-1-3. Extract the maximum value from the position deviation coefficients of each microscopic component phase in the concrete as the position deviation coefficient of the concrete.

[0039] A1-2. Extract the volume of each microscopic phase from the microscopic images of concrete before and after the test.

[0040] A1-3. Subtract the volume of each microscopic component phase of concrete before and after the test to obtain the volume difference of each microscopic component phase in the concrete.

[0041] A1-4. Compare the volume difference of each microscopic phase in the concrete with the volume difference of the set reference.

[0042] A1-5. If the volume difference of a certain microscopic component phase in the concrete is greater than the set reference volume difference, the microscopic component phase of the concrete is regarded as the volume difference deviation microscopic component phase.

[0043] A1-6. Count the number of microscopic phases with volume difference deviation and the number of microscopic phases, and take the ratio of the number of microscopic phases with volume difference deviation to the number of microscopic phases as the volume deviation coefficient of concrete.

[0044] A1-7. Select the maximum value from the position deviation coefficient and volume deviation coefficient of concrete as the vibration deviation coefficient of concrete.

[0045] A2. Extract the position coordinates of each microscopic component phase in the concrete from the microscopic image of the concrete after standing still, and then analyze the static deviation coefficient of the concrete in the same way as the analysis method of the concrete vibration deviation coefficient.

[0046] It should be added that the static deviation coefficient of concrete is obtained by analyzing the microscopic images of concrete before and after standing in the same way as the analysis method of the concrete vibration deviation coefficient. At the same time, the static deviation coefficient of concrete is analyzed to evaluate the recovery ability of concrete after the vibration test.

[0047] It should be added that the position coordinates of each microscopic component phase refer to the position coordinates of the center point of each microscopic component phase, wherein the coordinate system is established in the following manner: taking a corner of the scanning area as the origin, , The axes are built in a plane similar to the two-dimensional case. The axis is perpendicular to this plane, indicating the depth direction, and the position is determined: Assuming that the center of a sand microscopic phase is Direction distance from origin mm, Direction distance from origin mm, Direction distance from origin mm, then the three-dimensional position coordinates of the microscopic phase of the sand are .

[0048] A3. Subtract the vibration deviation coefficient of concrete from the static deviation coefficient to obtain the vibration recovery coefficient of concrete, which is recorded as .

[0049] A4. According to the extrusion force of each test needle in the concrete at each test time point, the extrusion force deviation coefficient of the concrete is calculated. .

[0050] Furthermore, the statistical concrete extrusion pressure deviation coefficient includes: A4-1, extracting the maximum extrusion pressure and the minimum extrusion pressure of the concrete at each detection time point from the extrusion pressure of each test needle in the concrete at each detection time point.

[0051] A4-2. Subtract the maximum extrusion pressure and the minimum extrusion pressure of the concrete at each test time point to obtain the extrusion pressure difference of the concrete at each test time point.

[0052] A4-3. The difference in the extrusion pressure of concrete at each testing time point is introduced into the extrusion pressure anomaly analysis model to obtain the extrusion pressure anomaly coefficient of concrete.

[0053] It should be added that the specific analysis method of the extrusion pressure anomaly analysis model is: comparing the extrusion pressure difference of concrete at each detection time point with the allowable extrusion pressure difference of the set reference.

[0054] If the extrusion pressure difference of concrete at a certain detection time point is greater than the allowable extrusion pressure of the set reference, the detection time point in the concrete is recorded as the extrusion pressure abnormality detection time point.

[0055] The number of extrusion pressure anomaly detection time points and the number of detection time points are counted, and the ratio of the number of extrusion pressure anomaly detection time points to the number of detection time points is taken as the extrusion pressure anomaly coefficient of concrete.

[0056] A4-4. According to the extrusion pressure of each test needle in the concrete at each test time point, the extrusion pressure deviation coefficient of the concrete is calculated.

[0057] Furthermore, the statistical deviation coefficient of the extrusion pressure of concrete includes: A4-4-1, using the detection time point as the horizontal coordinate and the extrusion pressure as the vertical coordinate to construct an extrusion pressure variation curve of each test needle in the concrete.

[0058] A4-4-2. Starting from the first detection time point, each detection time point is paired with its next adjacent detection time point in sequence to obtain each detection time group.

[0059] A4-4-3. Extract the slope of each test needle in the concrete in each test time group from the extrusion pressure change curve of each test needle in the concrete, and use it as the extrusion pressure change rate of each test needle in the concrete in each test time group.

[0060] A4-4-4. The average calculation result of the extrusion pressure change rate of each test needle in the concrete in each test time group is taken as the average extrusion pressure change rate of each test needle in the concrete, recorded as , For the test pin number, .

[0061] A4-4-5. The average pressure change rate of concrete is obtained by averaging, which is recorded as .

[0062] A4-4-6. Statistical deviation coefficient of concrete extrusion force , , The number of test pins.

[0063] A4-5. Calculate the average of the concrete extrusion pressure abnormality coefficient and the extrusion pressure deviation coefficient, and use the calculation result as the concrete extrusion pressure deviation coefficient, recorded as .

[0064] A5. Statistical Concrete Vibration Test Qualification Coefficient , , , and They are the vibration deviation coefficient, vibration recovery coefficient and extrusion force deviation coefficient for setting reference respectively.

[0065] It should be added that The setting method is: extract the historical microscopic images of concrete before and after the test from the historical test data of concrete, and then The vibration deviation coefficient of the set reference can be obtained by the same analysis method. and The setting method and Similar, no need to repeat the description here.

[0066] The embodiment of the present invention analyzes the vibration test qualification coefficient of concrete according to the length of the concrete, the microscopic images before, after and after the test, and the extrusion pressure of each test needle at each detection time point, thereby avoiding the current lack of attention to the microscopic level of concrete, and thus ensuring the stability of the high toughness of concrete, thereby ensuring the consistency of the high toughness of concrete, and at the same time improving the subsequent service life of concrete.

[0067] The concrete mechanics layout module is used to cut the concrete into concrete blocks after the vibration test is completed, and then arrange the mechanical test of each concrete block.

[0068] The concrete mechanics detection module is used to detect the mechanical test data of each concrete block, including the compressive strength of each concrete block at each failure load, the actual tensile strength of each concrete block, the number of cracks at each detection time point during each stretch, and the length of each crack.

[0069] It should be added that the method for obtaining the compressive strength of each concrete block at each failure load is as follows: the concrete block with measured dimensions is placed steadily on the lower pressure plate of the pressure testing machine. The center of the concrete block should coincide with the center of the lower pressure plate. The upper pressure plate of the pressure testing machine is adjusted to make it evenly contact with the surface of the concrete block, and ensure that the upper and lower pressure plates are perpendicular to the surface of the concrete block. During the test, the load should be applied continuously and evenly, and the loading speed should be controlled according to the strength grade of the concrete. When the concrete block is close to failure and begins to deform rapidly, the throttle of the testing machine should be stopped until the concrete block fails. The failure load value is recorded, and the bearing area of ​​the concrete block is calculated based on the measured value of the side length of the concrete block. Compressive strength calculation: compressive strength of concrete block Calculate as follows: ,in is the compressive strength of the concrete block, is the load value when the concrete block fails, is the bearing area of ​​the concrete block. For example, if the failure load value of a cubic concrete block with a side length of 150 mm is , its pressure bearing area , then the compressive strength of the concrete block .

[0070] It should be added that the actual tensile strength of each concrete block is obtained by installing the concrete block in the fixture of the tensile testing machine, ensuring that the center of the concrete block coincides with the center of the fixture, and the axis of the concrete block is parallel to the loading axis of the tensile testing machine. When installing the concrete block, care should be taken to avoid damage to the concrete block. At the same time, ensure that the fixture clamps the concrete block to prevent the concrete block from slipping during the stretching process. After the concrete block is installed, use measuring tools (such as vernier calipers, steel rulers, etc.) to measure the size of the concrete block, including length, width, height or diameter, and record the measurement data. At the same time, record the initial readings of the tensile testing machine, including load readings and displacement readings, etc., and use them as the initial data of the test. Tensile test: Start the tensile testing machine , start to apply axial tension to the concrete block. During the stretching process, the load should be applied continuously and evenly, and the loading speed should be controlled according to the strength grade of the concrete and the size of the concrete block. During the stretching process, the deformation and damage of the concrete block should be closely observed, and the load value and displacement value displayed by the tensile testing machine should be recorded. When obvious cracks appear in the concrete block or the deformation intensifies, the loading speed should be slowed down appropriately to more accurately observe the destruction process of the concrete block. When the concrete block is finally destroyed, record the destruction load value and the corresponding displacement value and other data. According to the size measurement data of the concrete block, the cross-sectional area of ​​the concrete block is calculated, and the actual tensile strength of the concrete block is analyzed in the same way as the compressive strength of the concrete block, which will not be repeated here.

[0071] It should be added that the number of cracks and the length of each crack at each detection time point during each stretching of each concrete block are obtained by detection using a high-speed camera placed above the concrete block. Its working principle is as follows: during the tensile test, a high-speed camera is used to capture images of the surface of the concrete block at the set detection time point. The high-speed camera can capture images of the surface of the concrete block at a high frame rate, thereby recording the entire process of surface deformation of the concrete block during the stretching process. The captured images are transmitted to a computer and analyzed using special digital image related software. The software first pre-processes the captured images, including grayscale, filtering, noise reduction and other operations to improve the quality and clarity of the image. Then, the software performs correlation analysis on the images captured at different time points to calculate the displacement changes of each point on the surface of the concrete block at different time points. Based on these displacement change information, the software can further calculate the strain distribution of each point on the surface of the concrete block. By analyzing the strain distribution on the surface of the concrete block, the cracks on the surface of the concrete block can be accurately identified, and the number of cracks and the length of each crack can be calculated.

[0072] The concrete mechanics analysis module is used to analyze the mechanical test qualification coefficient of concrete according to the mechanical test data of each concrete block.

[0073] See also Figure 3 As shown, for example, the analysis of the mechanical test qualification coefficient of concrete includes: E1, according to the compressive strength of each concrete block at each failure load, the concrete compressive performance qualification coefficient is calculated. .

[0074] Furthermore, the statistical concrete compressive performance qualification coefficient includes: E1-1, screening out the maximum and minimum values ​​from the compressive strength of each concrete block at each failure load, and taking the difference between the maximum and minimum values ​​as the extreme difference of the compressive strength of the concrete block, recorded as .

[0075] In a specific embodiment, a compressive strength test is performed on each concrete block, and a total of 5 concrete blocks are tested. The compressive strength data of each concrete block under each failure load are: the compressive strength of concrete block 1 under failure load 1 is 30, the compressive strength of concrete block 2 under failure load 2 is 32, the compressive strength of concrete block 3 under failure load 3 is 35, the compressive strength of concrete block 4 under failure load 4 is 33, and the compressive strength of concrete block 5 under failure load 5 is 31. The maximum and minimum values ​​are 35 and 30 respectively, and the compressive strength range of the concrete blocks is .

[0076] E1-2. The average calculated result of the compressive strength of each concrete block at each failure load is taken as the average compressive strength of the concrete block.

[0077] E1-3. According to the compressive strength of each concrete block at each failure load, the standard deviation of the compressive strength of the concrete block is obtained by the standard deviation formula, and the ratio of the standard deviation to the average compressive strength is used as the coefficient of variation of the concrete, recorded as .

[0078] In a specific embodiment, a compressive strength test is performed on each concrete block. A total of 5 concrete blocks are tested. The compressive strength data of each concrete block under each failure load are: the compressive strength of concrete block 1 under failure load 1 is 30, the compressive strength of concrete block 2 under failure load 2 is 32, the compressive strength of concrete block 3 under failure load 3 is 35, the compressive strength of concrete block 4 under failure load 4 is 33, and the compressive strength of concrete block 5 under failure load 5 is 31. The average compressive strength of the concrete blocks is .

[0079] Calculate the square of the difference between the compressive strength of each concrete block and the average compressive strength: Concrete block 1 is , concrete block 2 is , concrete block 3 is , concrete block 4 is , concrete block 5 is , and then calculate the variance of the concrete block as , and thus the standard deviation of the compressive strength of the concrete block is calculated as .

[0080] E1-4. Statistical analysis of the qualified coefficient of concrete compressive performance , , and are the range and coefficient of variation of the compressive strength of the set reference respectively.

[0081] It should be added that The setting method is: extract the historical mechanical test data of concrete from the historical test data of concrete, and then extract the historical compressive strength of concrete, so as to screen out the maximum and minimum values, and use the difference between the maximum and minimum values ​​as the compressive strength range for setting the reference. Setting method: According to the historical compressive strength of concrete, The coefficient of variation of the set reference is obtained by the same analysis method.

[0082] The embodiment of the present invention improves the comprehensiveness of concrete compressive performance analysis by calculating the concrete compressive performance qualification coefficient according to the compressive strength of each concrete block at each failure load, thereby improving the concrete quality compliance rate and thus improving the safety of the concrete structure.

[0083] E2. According to the actual tensile strength of each concrete block, the number of cracks at each test time point during each stretch, and the length of each crack, the tensile performance qualification coefficient of the concrete is calculated. .

[0084] Furthermore, the statistical qualification coefficient of the tensile performance of concrete includes: E2-1, taking the interval between a detection time point and its adjacent detection time point as the detection time.

[0085] E2-2. Subtract the number of cracks at each detection time point of each concrete block during each stretching from the number of cracks at the previous detection time point of each concrete block during each stretching to obtain the difference in the number of cracks at each detection time point of each concrete block during each stretching, and use the ratio of the difference to the detection time length as the development rate of the number of cracks at each detection time point of each concrete block during each stretching.

[0086] E2-3. Calculate the average value of the crack number growth rate of each concrete block at each test time point during each stretch, and calculate the average value of the calculation results to obtain the crack number growth rate of the concrete, which is recorded as .

[0087] E2-4. According to the length of each crack of each concrete block at each testing time point during each stretch, the crack length development rate of the concrete is calculated. .

[0088] It should be added that the specific statistical process for calculating the growth rate of concrete crack length is as follows: the length of each crack at each detection time point of each concrete block during each stretching is subtracted from the length of the previous detection time point of each concrete block during each stretching to obtain the length difference of each crack at each detection time point of each concrete block during each stretching, and the ratio of the length difference to the detection time is used as the growth rate of each crack length of each concrete block at each detection time point during each stretching.

[0089] The maximum value is selected from the crack length development rates of each concrete block at each detection time point during each stretching as the crack length development rate of the concrete.

[0090] E2-5. According to the actual tensile strength of each concrete block, calculate the tensile strength compliance rate of concrete .

[0091] It should be added that the specific statistical process for calculating the compliance rate of concrete tensile strength is as follows: the actual tensile strength of each concrete block is compared with the set standard tensile strength. If the actual tensile strength of a concrete block is greater than or equal to the set standard tensile strength, the concrete block is recorded as a concrete block that meets the tensile strength standard.

[0092] The number of concrete blocks that meet the tensile strength standard and the number of concrete blocks are counted, and the ratio of the number of concrete blocks that meet the tensile strength standard to the number of concrete blocks is taken as the tensile strength standard rate of concrete, recorded as .

[0093] E2-6. Statistical qualification coefficient of tensile properties of concrete , , , and are the weights of the crack number growth rate, crack length growth rate and tensile strength compliance rate, , .

[0094] It should be added that tensile strength is the most direct and key indicator to measure the tensile properties of concrete. If the tensile strength of concrete cannot meet the design requirements, then no matter how other indicators perform, the tensile properties of the concrete cannot be considered qualified. For example, in building structures, if the tensile strength of concrete is insufficient, it may cause serious problems such as cracking and damage when the structure is subjected to tension, which directly affects the safety and service life of the building. Based on the decisive role of tensile strength in the tensile properties of concrete, it should be given the greatest weight. The crack number development rate reflects the speed at which cracks are generated in the concrete during the tensile process. The rapid generation of cracks means the rapid deterioration of the internal structure of the concrete, which will seriously affect the tensile properties and overall durability of the concrete. For example, in hydraulic concrete structures, if the crack number development rate is too fast, a large number of cracks will be water and other harmful substances, accelerate the corrosion and destruction of concrete, and reduce the service life and safety of the structure. Considering the important influence of the crack number development rate on the tensile properties and durability of concrete, it should be given a higher weight. The crack length development rate mainly focuses on the expansion rate of the cracks that have occurred. Even if the number of cracks in the concrete is small at a certain moment, if these cracks expand at a faster rate, it will also cause damage to the concrete structure and reduce its tensile properties. For example, in a bridge structure, when the concrete is subjected to tensile loads, cracks may first occur in local areas. If the development rate of these cracks is not effectively controlled, the cracks will continue to expand, which may eventually lead to the rupture of the bridge structure and cause serious safety accidents. The crack length development rate poses a potential threat to the destruction of the concrete structure and the reduction of tensile properties, so its weight is the lowest, so it is set , in order to facilitate analysis, The specific value can be 0.3. The specific value can be 0.2. The specific value can be 0.5.

[0095] The embodiment of the present invention improves the accuracy of concrete tensile performance analysis by calculating the qualified coefficient of concrete tensile performance according to the actual tensile strength of each concrete block, the number of cracks at each detection time point during each stretching, and the length of each crack, thereby improving the pertinence of concrete tensile performance evaluation and improving the reliability of subsequent concrete high toughness quality evaluation.

[0096] E3. Select the minimum value from the concrete compressive performance qualification coefficient and tensile performance qualification coefficient as the concrete mechanical test qualification coefficient, denoted as .

[0097] The concrete quality confirmation module is used to confirm the high toughness quality qualification coefficient of concrete according to the vibration test qualification coefficient and mechanical test qualification coefficient of concrete.

[0098] Exemplarily, the confirmation of the high toughness quality qualification coefficient of concrete includes: extracting the vibration test qualification coefficient and the mechanical test qualification coefficient of concrete.

[0099] The vibration test qualification coefficient and mechanical test qualification coefficient of concrete are averaged and the result is used as the high toughness quality qualification coefficient of concrete.

[0100] The concrete quality feedback terminal is used to provide corresponding feedback according to the high toughness quality qualification coefficient of the concrete.

[0101] The embodiment of the present invention analyzes the vibration test qualification coefficient and mechanical test qualification coefficient of concrete based on the vibration detection and mechanical detection of concrete, thereby breaking the shortcoming of not considering the current vibration detection analysis of concrete, and comprehensively analyzing the high toughness quality qualification coefficient of concrete in multiple dimensions, avoiding the limitations of single-dimensional detection and analysis, thereby ensuring the reliability of the high toughness quality analysis of concrete, thereby ensuring the accuracy of the high toughness quality assessment of concrete.

[0102] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. A high-toughness quality detection and analysis system for ultra-high performance concrete, characterized by: The system includes: Concrete vibration layout module, used to layout various test needles in concrete, and then layout the vibration test of concrete; Concrete vibration detection module, used to detect the length of concrete, microscopic images before, after and after testing, and the extrusion force of each test needle at each testing time point; Concrete vibration analysis module, used to analyze the concrete vibration test qualification coefficient based on the length of the concrete, microscopic images before, after and after the test, and the extrusion force of each test needle at each test time point; The concrete mechanical layout module is used to cut the concrete into concrete blocks after the vibration test is completed, and then arrange the mechanical test of each concrete block; Concrete mechanics testing module, used to detect the mechanical test data of each concrete block, including the compressive strength of each concrete block at each failure load, the actual tensile strength of each concrete block, the number of cracks at each detection time point during each stretch, and the length of each crack; Concrete mechanics analysis module, used to analyze the mechanical test qualification coefficient of concrete based on the mechanical test data of each concrete block; Concrete quality confirmation module, used to confirm the high toughness quality qualification factor of concrete based on the vibration test qualification factor and mechanical test qualification factor of concrete; The concrete quality feedback terminal is used to provide corresponding feedback based on the high toughness quality qualification coefficient of the concrete.

2. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 1 is characterized by: The vibration test qualification factor of the analyzed concrete includes: A1. Statistical analysis of the vibration deviation coefficient of concrete based on the microscopic images of concrete before and after the test ; A2. Extract the position coordinates of each microscopic component phase in the concrete from the microscopic image of the concrete after standing still, and then analyze the static deviation coefficient of the concrete in the same way as the analysis method of the vibration deviation coefficient of the concrete; A3. Subtract the vibration deviation coefficient of concrete from the static deviation coefficient to obtain the vibration recovery coefficient of concrete, which is recorded as ; A4. According to the extrusion force of each test needle in the concrete at each test time point, the extrusion force deviation coefficient of the concrete is calculated. ; A5. Statistical Concrete Vibration Test Qualification Coefficient , , , and They are the vibration deviation coefficient, vibration recovery coefficient and extrusion force deviation coefficient for setting reference respectively.

3. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 2 is characterized by: The statistical vibration deviation coefficient of concrete includes: Extract the position coordinates of each microscopic component phase from the microscopic images of concrete before and after the test, and then calculate the position deviation coefficient of the concrete; The volume of each microscopic component phase is extracted from the microscopic images of concrete before and after the test; The volume of each microscopic component phase of concrete before and after the test is subtracted to obtain the volume difference of each microscopic component phase in the concrete; Compare the volume difference of each microscopic phase in concrete with the volume difference of a set reference; If the volume difference of a certain microscopic component phase in the concrete is greater than the set reference volume difference, the microscopic component phase of the concrete is taken as the volume difference deviation microscopic component phase; The number of volume difference deviation micro-phases and the number of micro-phases are counted, and the ratio of the number of volume difference deviation micro-phases to the number of micro-phases is used as the volume deviation coefficient of concrete; The maximum value is selected from the position deviation coefficient and volume deviation coefficient of the concrete as the vibration deviation coefficient of the concrete.

4. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 3 is characterized by: The position deviation coefficient of the statistical concrete includes: According to the position coordinates of each microscopic component phase of concrete before and after the test, the position deviation distance of each microscopic component phase in the concrete is obtained by the Euclidean distance formula; The ratio of the position deviation distance of each microscopic component phase in concrete to the length of concrete is taken as the position deviation coefficient of each microscopic component phase in concrete; The maximum value is extracted from the position deviation coefficients of each microscopic phase in the concrete as the position deviation coefficient of the concrete.

5. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 2 is characterized by: The statistical concrete extrusion force deviation coefficient includes: Extract the maximum extrusion pressure and the minimum extrusion pressure of the concrete at each testing time point from the extrusion pressure of each test needle in the concrete at each testing time point; The maximum extrusion pressure and the minimum extrusion pressure of the concrete at each test time point are subtracted to obtain the extrusion pressure difference of the concrete at each test time point; The difference in the extrusion pressure of concrete at each detection time point is introduced into the extrusion pressure anomaly analysis model to obtain the extrusion pressure anomaly coefficient of concrete; According to the extrusion force of each test needle in the concrete at each detection time point, the extrusion force deviation coefficient of the concrete is calculated; The extrusion pressure anomaly coefficient and extrusion pressure deviation coefficient of concrete are averaged and the calculation result is used as the extrusion pressure deviation coefficient of concrete, which is recorded as .

6. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 5 is characterized by: The statistical concrete extrusion force deviation coefficient includes: With the detection time point as the horizontal coordinate and the extrusion pressure as the vertical coordinate, the extrusion pressure variation curve of each test needle in the concrete is constructed; Starting from the first detection time point, each detection time point is paired with the next detection time point immediately adjacent thereto, thereby obtaining each detection time group; Extracting the slope of each test needle in the concrete in each test time group from the extrusion pressure variation curve of each test needle in the concrete, and using it as the extrusion pressure variation rate of each test needle in the concrete in each test time group; The average calculation result of the extrusion pressure change rate of each test needle in the concrete in each detection time group is taken as the average extrusion pressure change rate of each test needle in the concrete, recorded as , For the test pin number, ; Will The average pressure change rate of concrete is obtained by averaging, which is recorded as ; Statistical deviation coefficient of extrusion force of concrete , , The number of test pins.

7. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 1 is characterized by: The mechanical test qualification coefficient of the concrete analyzed includes: E1. According to the compressive strength of each concrete block at each failure load, the qualified coefficient of concrete compressive performance is calculated. ; E2. According to the actual tensile strength of each concrete block, the number of cracks at each test time point during each stretch, and the length of each crack, the tensile performance qualification coefficient of the concrete is calculated. ; E3. Select the minimum value from the concrete compressive performance qualification coefficient and tensile performance qualification coefficient as the concrete mechanical test qualification coefficient, denoted as .

8. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 7 is characterized by: The statistical concrete compressive performance qualification coefficient includes: The maximum and minimum values ​​are selected from the compressive strength of each concrete block at each failure load, and the difference between the maximum and minimum values ​​is taken as the extreme difference of the compressive strength of the concrete block, recorded as ; The average calculated result of the compressive strength of each concrete block at each failure load is taken as the average compressive strength of the concrete block; According to the compressive strength of each concrete block at each failure load, the standard deviation of the compressive strength of the concrete block is obtained through the standard deviation formula, and its ratio to the average compressive strength is used as the coefficient of variation of the concrete, recorded as ; Statistical Concrete Compressive Performance Qualification Coefficient , , and are the range and coefficient of variation of the compressive strength of the set reference respectively.

9. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 7, characterized in that: The statistical tensile performance qualification coefficient of concrete includes: The interval between a detection time point and its adjacent detection time point is taken as the detection time; The number of cracks of each concrete block at each detection time point during each stretching is subtracted from the number of cracks of the previous detection time point during each stretching to obtain the difference in the number of cracks of each concrete block at each detection time point during each stretching, and the ratio of the difference to the detection time length is used as the development rate of the number of cracks of each concrete block at each detection time point during each stretching; The crack number development rate of each concrete block at each test time point during each stretch is averaged, and the calculation results are averaged to obtain the crack number development rate of the concrete, which is recorded as ; According to the length of each crack of each concrete block at each testing time point during each stretch, the crack length development rate of the concrete is calculated. ; According to the actual tensile strength of each concrete block, the tensile strength compliance rate of concrete is calculated. ; Statistical Concrete Tensile Properties Qualification Factor , , , and are the weights of the crack number growth rate, crack length growth rate and tensile strength compliance rate, , .

10. The ultra-high performance concrete high toughness quality detection and analysis system according to claim 7, characterized in that: The qualified coefficient for confirming the high toughness quality of concrete includes: Extract the vibration test qualification coefficient and mechanical test qualification coefficient of concrete; The vibration test qualification coefficient and mechanical test qualification coefficient of concrete are averaged and the result is used as the high toughness quality qualification coefficient of concrete.

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