CN114486479A - Concrete strength detection device and method - Google Patents
Concrete strength detection device and method Download PDFInfo
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- CN114486479A CN114486479A CN202210094320.2A CN202210094320A CN114486479A CN 114486479 A CN114486479 A CN 114486479A CN 202210094320 A CN202210094320 A CN 202210094320A CN 114486479 A CN114486479 A CN 114486479A
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 80
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000002474 experimental method Methods 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 5
- 238000010606 normalization Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000012549 training Methods 0.000 description 4
- 238000013528 artificial neural network Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010801 machine learning Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000513 principal component analysis Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012106 screening analysis Methods 0.000 description 1
- 238000012706 support-vector machine Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses concrete strength detection device and method, and the concrete strength detection device comprises an experiment frame, a guide rail mechanism fixedly connected with the experiment frame and vertically arranged, a motor drilling machine connected with the guide rail mechanism in a sliding mode, and a monitoring control system used for monitoring the drilling parameters of the motor drilling machine and controlling the motor drilling machine. The concrete intensity detection device that this application provided guarantees to drill the concrete test block of different intensity with the help of weight-on-bit, rotational speed, the torque control of drilling process, conveniently utilizes and follows the drilling parameter and detect the concrete intensity, improves the convenience and the accuracy that detect.
Description
Technical Field
The application relates to the field of concrete strength detection, in particular to a concrete strength detection device and method.
Background
The existing concrete strength detection method is mainly divided into a nondestructive detection method and a destructive detection method. The nondestructive testing method comprises a rebound method, an ultrasonic testing method, a geological radar testing method and the like, and although the nondestructive testing method cannot damage the concrete member, the tested data is only indirect data and can obtain the concrete strength only through conversion, and the error is large. The method for detecting the concrete strength of the concrete structure comprises a core drilling sampling method, a core pulling-out method and the like, the concrete structure is damaged, the core drilling sampling method is a sampling and inspection method, the time interval for obtaining an experimental report is long, the construction progress is severely restricted, the engineering budget cost is increased, compared with a nondestructive detection method, the method for detecting the concrete strength of the concrete structure can visually obtain the concrete strength value, the accuracy of the detection result is difficult to guarantee, and the two corresponding concrete strength detection methods have the defects of low efficiency, high labor consumption and complex operation.
Therefore, how to optimize the concrete strength detection becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at providing a concrete strength detection device improves convenience and the accuracy that concrete strength detected. Another object of the present application is to provide a method for detecting concrete strength by using the above concrete strength detecting apparatus.
In order to realize the above-mentioned purpose, this application provides a concrete strength detection device, including experiment frame, fixed connection guide rail mechanism, the sliding connection of experiment frame and vertical setting the motor rig of guide rail mechanism with be used for the monitoring the parameter while drilling of motor rig is controlled the monitoring control system of motor rig.
Optionally, the motor drilling machine comprises a drilling machine body and a hydraulic motor for driving the drilling machine body to rotate, and the monitoring control system comprises a first monitoring module for monitoring the flow and the pressure difference of the hydraulic motor, and a laser displacement sensor arranged on the experimental frame and used for monitoring the lifting displacement of the motor drilling machine.
Optionally, the experimental frame includes a top frame, a bottom frame, and a plurality of sets of columns connecting the top frame and the bottom frame, and a beam of the bottom frame is provided with a fixing mechanism for clamping the concrete test block.
Optionally, the guide rail mechanism comprises a left guide rail and a right guide rail which are arranged oppositely in parallel, the motor drilling machine is connected with a drilling machine fixing frame, and two ends of the drilling machine fixing frame are respectively provided with a guide rail sliding block matched with the left guide rail and the right guide rail.
Optionally, the left guide rail and the right guide rail are both double-axis linear guide rails, the guide rail slider is a four-wheel locking slider, and the four-wheel locking slider is provided with a locking bolt.
Optionally, the weight on bit configuration frame is used for bearing a heavy object, and is arranged at the top of the motor drilling machine and fixedly connected with the motor drilling machine.
Optionally, the upright post and the cross beam of the top frame and the upright post and the cross beam of the bottom frame are provided with connecting corner connectors.
Optionally, the drill fixing frame comprises a fixing frame clamping plate and a fixing frame waist plate, a clamping groove is formed in the middle of the fixing frame waist plate, the fixing frame clamping plate is connected with the fixing frame waist plate and matched with the clamping groove to clamp and fix the motor drill, and two ends of the fixing frame waist plate are respectively connected with the guide rail sliding blocks.
The application also provides a concrete strength detection method, and the concrete strength detection device comprises the following steps:
controlling the motor drilling machine to drill a concrete test block and acquiring while-drilling parameters;
screening, analyzing and normalizing the while-drilling parameters;
and establishing and selecting a prediction model, and outputting the strength of the concrete test block according to the prediction model and the parameter while drilling after normalization processing.
According to the concrete strength detection device and the concrete strength detection method, the drilling parameters (torque, rotating speed, drilling pressure and drilling rate) in the drilling process of the drilling machine are detected, and the concrete mechanical parameters are represented by directly utilizing the drilling parameters of the drilling machine according to the correlation between the drilling parameters and the concrete mechanical parameters (uniaxial compressive strength, Poisson's ratio, internal friction angle and elastic modulus) and characteristics (aggregate particle size and coagulation hardening integrity coefficient), so that the concrete strength detection device and the concrete strength detection method have the advantages of intuition, high efficiency, on-site real-time judgment and the like; the motor drilling machine is connected with the guide rail mechanism in a sliding mode, the loading pressure, namely the drilling pressure, of the motor drilling machine is controlled, the moving speed, the rotating speed and the torque of the motor drilling machine when a concrete test block is drilled are monitored by the monitoring and controlling system, and the detection is convenient and rapid.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a concrete strength detection apparatus according to an embodiment of the present application;
FIG. 2 is an assembly view of the motor drill and weight on bit configuration frame;
FIG. 3 is an assembly view of the motor drill and drill mount;
fig. 4 is a flowchart of a concrete strength detection method according to an embodiment of the present application.
Wherein:
1-left guide rail, 2-top frame, 3-right guide rail, 4-upright post, 5-motor drill, 6-motor interface, 7-fixed frame clamping plate, 8-fastening bolt, 9-drill rod, 10-connecting angle bracket, 11-fixing mechanism, 12-concrete test block, 13-drill chuck connecting shaft, 14-fixed frame waist plate, 15-guide rail sliding block, 16-force transmission angle steel, 17-drilling pressure preparation frame and 18-bottom frame.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 3, fig. 1 is a structural diagram of a concrete strength detection apparatus according to an embodiment of the present disclosure, fig. 2 is an assembly diagram of a motor drill and a bit weight configuration frame, and fig. 3 is an assembly diagram of the motor drill and a drill fixing frame.
The embodiment of the application provides a concrete strength detection device, which comprises an experiment frame, a motor drill 5 and a monitoring control system, wherein a guide rail mechanism is vertically fixed on the experiment frame, the motor drill 5 can lift and slide along a guide rail cabinet, the guide rail mechanism is used for guiding, and the weight of a drill bit during drilling is adjusted by changing the gravity loaded on the motor drill 5; the monitoring and control system is used on the one hand to control the operation of the motor drill 5 and on the other hand to monitor and obtain drilling parameters of the motor drill 5 such as rotation speed, torque and drilling rate. By monitoring the parameter while drilling of the concrete test block 12 with the preset standard strength, a parameter while drilling-concrete strength corresponding relation model is generated so as to facilitate the detection of the concrete strength, the concrete strength detection device provided by the embodiment of the application is utilized to drill the concrete test block 12 and obtain the parameter while drilling, and the strength of the concrete test block 12 can be conveniently and accurately determined.
The experimental frame is formed by connecting sectional materials, and specifically comprises a top frame 2, a bottom frame 18 and upright posts 4, wherein the top frame 2 and the bottom frame 18 are square frames formed by connecting cross beams, and the upright posts 4 are vertically connected at four corners of the top frame 2 and the bottom frame 18. The guide rail mechanism comprises a pair of oppositely arranged left guide rail 1 and right guide rail 3, a pair of middle upright posts are further connected between the bottom frame 18 and the bottom frame 18 in order to fix the left guide rail 1 and the right guide rail 3, the middle upright posts are connected between the middle parts of the cross beams of the top frame 2 and the bottom frame 18, and the left guide rail 1 and the right guide rail 3 are respectively fixed on the middle upright posts. The motor drill 5 is fixed by a drill fixing frame, two ends of the drill fixing frame are fixedly connected with guide rail sliding blocks 15, and the guide rail sliding blocks 15 are respectively connected to the left guide rail 1 and the right guide rail 3 in a sliding way.
Referring to fig. 2 and 3, the drill fixing frame comprises a fixing frame clamping plate 7 and a fixing frame waist plate 14, two ends of the fixing frame waist plate 14 are respectively connected with the guide rail sliding blocks 15 through bolts, a clamping groove for accommodating the motor drill 5 is formed in the middle of the fixing waist plate, the size of the clamping groove is slightly larger than the diameter of a drill chuck connecting shaft 13 of the motor drill 5, screw holes are formed in the groove bottom of the clamping groove and the fixing frame clamping plate 7, and the fixing frame clamping plate 7 is matched with the clamping groove to clamp and fix the motor drill 5 by screwing the fastening bolt 8.
In one embodiment, the left guide rail 1 and the right guide rail 3 both adopt double-axis linear guide rails, the corresponding guide rail sliding blocks 15 adopt four-wheel locking sliding blocks matched with the double-axis linear guide rails, the four-wheel locking sliding blocks are provided with locking bolts, and when the locking bolts are fastened, the four-wheel locking sliding blocks and the double-axis linear guide rails are locked relatively, so that the motor drill 5 is prevented from sliding downwards under the action of self gravity in a non-drilling detection state; when the locking bolts are not fastened, the four-wheel locking slide block can lift the slide way relative to the double-axis linear guide rail, so that the gravity loaded on the motor drill 5 can be conveniently adjusted, and the drilling pressure of the motor drill 5 during drilling detection of the concrete test block 12 is changed.
In the above embodiment, the motor drilling machine 5 includes a drilling machine body and a hydraulic motor for driving the drilling machine to rotate, the hydraulic motor is provided with a motor interface 6, the motor interface 6 is used for introducing a fluid with preset pressure and flow to drive the hydraulic motor to rotate, and the hydraulic motor drives a drill chuck connecting shaft 13 of the drilling machine body and a drill rod 9 to rotate so as to realize drilling detection. In order to obtain parameters while drilling, the monitoring control system at least comprises a control center, a first monitoring module and a laser displacement sensor, wherein the first monitoring module is used for monitoring the flow of a hydraulic motor and the fluid pressure difference between an inlet and an outlet, the laser displacement sensor is used for monitoring the lifting displacement of the hydraulic motor, namely the motor drilling machine 5, and the laser displacement sensor is fixed at the top of an experiment frame. The first monitoring module comprises a flowmeter and two groups of pressure gauges or a group of differential pressure transmitters, and the first monitoring module and the laser displacement sensor are connected to the control center, so that the control center can output drilling parameters such as the rotating speed, the torque and the drilling rate of the motor drill 5.
Referring to fig. 1 and 2, in an embodiment, the concrete strength detection device further includes a weight-on-bit configuration frame for carrying a counterweight, the weight-on-bit configuration frame is disposed on the top of the motor drill 5 and fixed on the fixing frame waist plate 14 through a pair of force transmission angle steels 16, so as to realize transmission of the weight-on-bit. The weight-on-bit is adjusted by weighting or loading different weights to the weight-on-bit allocation frame 17. The monitoring control system also comprises a pressure sensor for detecting the pressure applied on the drill rod 9, the pressure sensor can be arranged between the drill chuck connecting shaft 13 and the drill rod 9, and the pressure sensor is also connected with the control center so as to monitor and output the weight-on-bit parameter.
Meanwhile, in order to guarantee the overall strength of the experimental frame, the connecting part of the cross beams of the stand column 4 and the top frame 2 and the connecting part of the cross beams of the stand column 4 and the bottom frame 18 are respectively provided with a connecting angle code 10, the connection verticality of the stand column 4, the top frame 2 and the bottom frame 18 is improved by means of the connecting angle code 10, and the experimental frame is prevented from being deformed when the motor is drilled with a loaded heavy object.
In an embodiment, the concrete strength detecting apparatus provided by the present application further includes a fixing mechanism 11 disposed on the bottom frame 18, as shown in fig. 1, the fixing mechanism 11 is fixed at the center of a pair of parallel opposite cross beams of the bottom frame 18, the fixing mechanism 11 includes a fixing member and an adjusting bolt, the adjusting bolt is rotatably connected to the fixing member, and the concrete test block 12 is clamped at the bottom of the experimental frame by rotating the adjusting bolt. The concrete intensity detection device that this application provided not only can directly carry out intensity detection to concrete or rock stratum ground, can also utilize 11 clamping of fixed establishment in the bottom of experiment frame with the test block of sample, realizes intensity detection through creeping into the test block of sample.
Referring to fig. 4, the present application further provides a method for detecting concrete strength, in which the apparatus for detecting concrete strength is applied, including:
step 1: collecting sample data, namely, driving the motor drill 5 to drill a hole in the concrete test block 12 and acquiring parameters while drilling;
step 2: sample data processing, namely parameter screening analysis and normalization processing while drilling;
and step 3: and establishing and selecting a prediction model, and outputting the concrete strength according to the prediction model and the normalized parameters while drilling.
Specifically, the step 1 of collecting sample data comprises the following steps: and moving the concrete test block 12 to the testing position of the testing frame, fixing the concrete test block 12 to be tested by the adjusting and fixing mechanism 11, and moving the concrete test block 12 to be tested left and right to adjust the marking point of the concrete test block 12 to be tested to be positioned under the drill rod 9 of the motor drill 5. The monitoring control system is utilized to control the hydraulic test bed to adjust the liquid inlet flow and the pressure of the hydraulic motor, the weight of the bit pressure configuration frame is increased or decreased, appropriate drilling control parameters are adjusted according to different detection objects, the motor drilling machine 5 is ensured to be capable of drilling into the detection objects, the laser displacement sensor is arranged right above the experiment frame, the light spot is just opposite to the left side of the waist plate 14 of the fixing frame without a shielding part, the motor drilling machine 5 is started, and the drill rod 9 gradually performs drilling operation on the concrete. The drilling displacement is monitored in real time through the laser displacement sensor, and the flow and the pressure difference of the motor can be directly obtained through the first monitoring module.
The step 2 comprises the following steps: sample data preprocessing, namely substituting the flow and the pressure difference of the hydraulic motor acquired in the step 1 into a conversion formula to obtain the torque and the rotating speed of parameters while drilling, monitoring the drilling displacement in real time through a laser displacement sensor, acquiring the drilling rate, deleting abnormal values and trends in order to eliminate the influence of magnitude order, performing principal component analysis, selecting stepwise regression sequence characteristics and regularization, filling missing data for processing, normalizing 4 drilling parameters (the torque, the rotating speed, the drilling pressure and the drilling rate) in a sample database to a numerical value of 0-1, and normalizing the corresponding strength data of the concrete test block 12 to the numerical value of 0-1.
The step 3 comprises the following steps: determining an optimal prediction model and parameters, dividing the collected sample database into a training set and a test set according to the proportion of 80% to 20%, establishing the prediction model through the training set, taking the drilling parameters of the test set as the input of the prediction model, and taking the strength of the concrete test block 12 as the output of the prediction model.
The prediction model and the expert knowledge system are a detection system which is preferentially integrated and established based on the corresponding relation between the parameters while drilling and the concrete strength through a large amount of data and experience in a laboratory and machine learning training (comprising a plurality of machine learning training combinations such as BP neural network, RBF nonlinear regression prediction, SVM support vector machine nonlinear regression prediction, Lunar neural network app software test, AMESim neural network app software test and the like). And finally, outputting the strength of the concrete test block 12 according to the selected optimal prediction model and the while-drilling parameters by inputting the while-drilling parameters of the concrete test block 12 to be tested.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The concrete strength detection device and method provided by the application are introduced in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (9)
1. The concrete strength detection device is characterized by comprising an experiment frame, a vertically arranged guide rail mechanism fixedly connected with the experiment frame, a motor drilling machine connected with the guide rail mechanism in a sliding mode and a monitoring control system used for monitoring the drilling parameters of the motor drilling machine and controlling the motor drilling machine.
2. The concrete strength detection device of claim 1, wherein the motor drill comprises a drill body and a hydraulic motor for driving the drill body to rotate, and the monitoring control system comprises a first monitoring module for monitoring the flow and the pressure difference of the hydraulic motor and a laser displacement sensor arranged on the experimental frame and used for monitoring the lifting displacement of the motor drill.
3. The concrete strength detection device of claim 1, wherein the experimental frame comprises a top frame, a bottom frame and a plurality of groups of upright posts for connecting the top frame and the bottom frame, and a cross beam of the bottom frame is oppositely provided with a fixing mechanism for clamping a concrete test block.
4. The concrete strength detection device according to claim 3, wherein the guide rail mechanism comprises a left guide rail and a right guide rail which are arranged oppositely in parallel, the motor drill is connected with a drill fixing frame, and two ends of the drill fixing frame are respectively provided with a guide rail sliding block matched with the left guide rail and the right guide rail.
5. The concrete strength detection device according to claim 4, wherein the left guide rail and the right guide rail are double-axis linear guide rails, the guide rail sliding blocks are four-wheel locking sliding blocks, and locking bolts are arranged on the four-wheel locking sliding blocks.
6. The concrete strength detection device according to any one of claims 1 to 5, further comprising a weight on bit configuration frame for carrying a counterweight, wherein the weight on bit configuration frame is arranged on the top of the motor drill and is fixedly connected with the motor drill.
7. The concrete strength detecting device according to claim 3, wherein the columns and the cross beams of the top frame and the columns and the cross beams of the bottom frame are provided with connecting corner connectors.
8. The concrete strength detection device according to claim 4, wherein the drilling machine fixing frame comprises a fixing frame clamping plate and a fixing frame waist plate, a clamping groove is formed in the middle of the fixing frame waist plate, the fixing frame clamping plate is connected with the fixing frame waist plate and matched with the clamping groove to clamp and fix the motor drilling machine, and two ends of the fixing frame waist plate are respectively connected with a guide rail sliding block.
9. A concrete strength testing method using the concrete strength testing apparatus according to any one of claims 1 to 8, comprising:
controlling the motor drill to drill the concrete test block and obtain parameters while drilling;
screening, analyzing and normalizing the while-drilling parameters;
and establishing and selecting a prediction model, and outputting the strength of the concrete test block according to the prediction model and the parameter while drilling after normalization processing.
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| CN202210094320.2A CN114486479A (en) | 2022-01-26 | 2022-01-26 | Concrete strength detection device and method |
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| CN202210094320.2A CN114486479A (en) | 2022-01-26 | 2022-01-26 | Concrete strength detection device and method |
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