Method and equipment for determining concrete pouring and vibrating construction process parameters of wall type guardrail

Abstract

The invention belongs to the technical field of bridge construction, and relates to a method and equipment for determining concrete pouring and vibrating construction process parameters of a wall type guardrail, and the method comprises the following steps: obtaining the cement mark number, the cement sand mixing ratio, the thickness and the expected quality grade of the wall type guardrail, and inputting the cement mark number, the cement sand mixing ratio, the thickness and the expected quality grade into a construction process parameter preselection model of the wall type guardrail; determining pre-selected construction process parameters during concrete pouring and vibrating construction of the wall type guardrail; obtaining a construction surface image at a preset height; inputting the construction surface image into a bubble recognition model, recognizing bubbles on the construction surface, and obtaining the size and number of the bubbles; and performing gradient adjustment on the pre-selected construction process parameters based on the sizes and the number of the bubbles until the sizes and the number of the bubbles on the construction surface are smaller than a preset threshold value. According to the invention, the consistency of the quality parameters of the guardrails on each station is ensured by adjusting the technological parameters in the construction process, so that the construction efficiency is improved, and the economic cost is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge construction, and particularly relates to a method for determining construction process parameters of wall-type guardrail concrete pouring and vibrating and equipment thereof. BACKGROUND

[0002] As a key safety protection infrastructure in bridge engineering, the quality of concrete crash barrier is very important. In the traditional crash barrier construction, cast-in-place technology is used for construction. During construction, the construction personnel generally wear safety belts and stand on the top of the guardrail forming steel formwork to assist pouring and vibrating. After the construction of one station is completed, the personnel walk along the top of the guardrail forming steel formwork to replace the station and then perform the next construction. In this operation mode, the process parameters of vibrating operation are very important, which directly affect the quality of the concrete crash barrier. Since the traditional method uses manual pouring and vibrating, the quality parameters at each station during the entire construction process are grasped by experience, and the dependence on experience is relatively high. Moreover, due to the complexity of the construction conditions, the following two situations are prone to occur:

[0003] Insufficient vibrating operation time causes missing vibrating, which causes the bubbles and impurities in the concrete to be unable to be discharged, and a large number of bubbles and insufficiently compacted areas exist in the concrete. The insufficient adhesion between the aggregate and the cement paste in these areas causes the overall strength and bearing capacity of the concrete to decrease, and cracks, deformation, and even damage are prone to occur.

[0004] Excessive vibrating operation time causes over-vibrating, which causes the aggregate in the concrete to sink. The sinking of the aggregate causes the aggregate in the concrete to be unevenly distributed, the upper part of the cement paste is excessive, and the lower part of the aggregate is excessive. This uneven distribution affects the overall strength of the concrete, the upper part has a lower strength, and the lower part has a higher strength, which causes the bearing capacity and stress distribution of the structure to be uneven, and cracks are prone to occur in the sinking area of the aggregate.

[0005] Whether missing vibrating or over-vibrating, both of them affect the safety, durability, and surface quality of the structure of the concrete crash barrier. Therefore, how to ensure the consistency of the quality parameters of the guardrail at each station is very important for the overall quality control of the concrete crash barrier. SUMMARY

[0006] Therefore, the application provides a method for determining construction process parameters of wall-type guardrail concrete pouring and vibrating and equipment thereof, which ensures the consistency of the quality parameters of the guardrail at each station and improves the overall quality control level of the concrete crash barrier.

[0007] The technical scheme of the application is as follows:

[0008] The method for determining construction process parameters of wall-type guardrail concrete pouring and vibrating comprises the following steps:

[0009] obtaining a cement grade, a sand-cement ratio of the cement, a thickness, and a desired quality grade of the wall guardrail;

[0010] inputting the cement grade, the sand-cement ratio of the cement, the thickness, and the desired quality grade of the wall guardrail into a construction process parameter preselection model of the wall guardrail to determine preselected construction process parameters of the wall guardrail concrete pouring and vibrating construction, wherein the preselected construction process parameters include a diameter of a vibrating rod, a vibrating frequency of the vibrating rod, a vibrating time, and a vibrating point spacing;

[0011] obtaining a construction surface image at a preset height;

[0012] inputting the construction surface image into a bubble identification model to identify bubbles on the construction surface and obtain a size and a quantity of the bubbles;

[0013] gradient adjusting the vibrating time and the vibrating point spacing based on the size and the quantity of the bubbles until the size and the quantity of the bubbles on the construction surface are less than a preset threshold.

[0014] Further, the construction process parameter preselection model of the wall guardrail is constructed based on a mapping relationship of the thickness of the wall guardrail, the diameter of the vibrating rod, the vibrating time, the vibrating point spacing, the vibrating frequency of the vibrating rod, and the guardrail quality grade.

[0015] Further, the bubble identification model is constructed based on an improved YOLOv5 model.

[0016] Further, obtaining the construction surface image at the preset height includes the following steps:

[0017] real-time obtaining a multi-point height value on the construction surface of the wall guardrail at a same time point in the pouring and vibrating construction process;

[0018] determining an average height value based on the multi-point height value;

[0019] obtaining a relative height difference by subtracting the average height value from a preset height value;

[0020] judging whether the relative height difference falls within a preset height tolerance range, and when the relative height difference falls within the preset height tolerance range, obtaining the construction surface image at this time.

[0021] Further, the vibrating time and the vibrating point spacing are gradient adjusted based on the following formula,

[0022]

[0023] D = (1 + f)D1,

[0024] wherein T is the adjusted time of vibration, t is the preselected time of vibration, d is the diameter of the bubble, d max is the maximum diameter of the allowable bubble, n is the number of bubbles, n max is the maximum number of allowable bubbles, D is the spacing of the vibration points after adjustment, f is the adjustment coefficient, f = [-0.2-0.100.10.2], and D1 is the spacing of the preselected vibration points.

[0025] The system for determining the construction process parameters of the wall guard concrete pouring and vibration comprises:

[0026] A first obtaining module is configured to obtain the cement grade, sand-cement ratio, thickness, and expected quality grade of the wall guard.

[0027] A determining module is configured to input the cement grade, sand-cement ratio, thickness, and expected quality grade of the wall guard into a construction process parameter preselection model of the wall guard to determine preselected construction process parameters during the concrete pouring and vibration of the wall guard, wherein the preselected construction process parameters include the diameter of the vibrating rod, the vibration frequency of the vibrating rod, the time of vibration, and the spacing of the vibration points.

[0028] A second obtaining module is configured to obtain the construction surface image at a preset height.

[0029] An identifying module is configured to input the construction surface image into a bubble identifying model to identify the bubbles on the construction surface and obtain the size and number of the bubbles.

[0030] An adjusting module is configured to perform gradient adjustment on the time of vibration and the spacing of the vibration points based on the size and number of the bubbles until the size and number of the bubbles on the construction surface are less than a preset threshold.

[0031] A computer readable storage medium has a computer program stored thereon, and the computer program is executed by a processor to implement the method for determining the construction process parameters of the wall guard concrete pouring and vibration as described above.

[0032] A wall guard concrete pouring and vibration work platform comprises the computer readable storage medium as described above, and the computer readable storage medium is electrically connected to the processor, and further comprises:

[0033] An infrared measuring device is configured to obtain the height value of the construction surface.

[0034] A camera device is configured to obtain the construction surface image at a preset height, and the camera device and the infrared measuring device are both electrically connected to the processor.

[0035] Compared with the prior art, the method and the device for determining the construction process parameters of the wall-type guardrail concrete pouring and vibrating provided by the application guarantee the quality level of the wall-type guardrail in two stages. First, in the construction preparation stage, the cement grade, the sand-cement ratio, the thickness, and the expected quality level of the wall-type guardrail are obtained and input into a construction process parameter preselection model of the wall-type guardrail to determine the preselected construction process parameters during the concrete pouring and vibrating of the wall-type guardrail. The construction process parameter preselection model of the wall-type guardrail is supported by historical experience data, which eliminates the influence of personal ability on the quality parameters at each station. Second, in the construction stage, a bubble recognition model is used to identify the bubbles on the construction surface and obtain the size and quantity of the bubbles. The time of vibrating and the spacing of vibrating points are adjusted based on the size and quantity of the bubbles. The adjustment of the local process parameters during the construction process eliminates the influence of the missed vibrating or over-vibrating on the safety, durability, and surface quality of the structure of the concrete crash barrier, guarantees the consistency of the quality parameters of the guardrail at each station, improves the overall quality control level of the concrete crash barrier, improves the construction efficiency, reduces the economic cost, has strong practicability, and is worth promoting. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The flowchart of the application.

[0037] Figure 2 The system structure diagram of the application. DETAILED DESCRIPTION

[0038] The concrete crash barrier is a key safety protection infrastructure in bridge engineering, and the quality of its construction is very important. In the traditional crash barrier construction, the cast-in-place process is used for construction. During construction, the construction personnel generally wear safety belts and stand directly on the top of the guardrail forming steel formwork to assist in pouring and vibrating. After the construction at one station is completed, the construction personnel walk along the top of the guardrail forming steel formwork to replace the station and perform the next construction. In this operation mode, the process parameters of the vibrating operation are very important, which directly affect the quality of the concrete crash barrier. Since the traditional method uses manual pouring and vibrating, the highness or lowness of the quality parameters during the entire construction process depends on experience, and the dependence on experience is relatively high. Moreover, due to the complexity of the construction conditions, the following two situations are prone to occur:

[0039] The missed vibrating caused by the insufficient vibrating operation time causes the bubbles and impurities in the concrete to be unable to be discharged, and there are a large number of bubbles and insufficiently compacted areas in the concrete. The bonding force between the aggregates and the cement paste in these areas is insufficient, which reduces the overall strength and bearing capacity of the concrete and easily causes cracks, deformation, or even damage.

[0040] The over-vibration caused by too long vibration operation time makes the aggregate in the concrete sink, and the aggregate sinking leads to uneven distribution of the aggregate in the concrete, too much cement paste in the upper part and too much aggregate in the lower part, which affects the overall strength of the concrete, the upper part has lower strength and the lower part has higher strength, leading to uneven load bearing capacity and stress distribution of the structure and cracks in the aggregate sinking area.

[0041] Whether it is under-vibration or over-vibration, it will affect the safety, durability and surface quality of the structure of the concrete crash barrier, therefore, how to ensure the consistency of the quality parameters of the barrier at each station through the adjustment of process parameters is very important for the overall quality control of the concrete crash barrier.

[0042] The application provides a method and equipment for determining process parameters of wall-type barrier concrete pouring and vibration construction, so as to solve the above problems, so that those skilled in the art can better understand the technical solutions of the application and implement them. Figure 1 The technical solutions in the application will be described clearly and in detail in combination with the flowchart of Figure 2 The technical solutions in the application will be described clearly and in detail in combination with the flowchart of

[0043] In the description of the application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0044] In addition, it should be further pointed out that, in the description of the embodiments of the application, unless otherwise specified, " / " represents or, for example, A / B can represent A or B: "and / or" in the text only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone, and in addition, in the description of the embodiments of the application, "multiple" means two or more than two.

[0045] The following terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features, and in the description of the application, unless otherwise specified, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0046] In the present application, unless specifically defined otherwise, the terms "mount", "connect", "connect", "fix", and other similar terms are to be broadly interpreted, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0049] Example 1

[0050] As Figure 1 shown, the method for determining the construction process parameters of wall-type guardrail concrete pouring and vibrating provided by the present application comprises the following steps:

[0051] The cement grade, sand-cement ratio of the cement, thickness, and desired quality grade of the wall guardrail are obtained, and the cement grade, sand-cement ratio of the cement, thickness, and desired quality grade of the wall guardrail are input into a construction process parameter preselection model of the wall guardrail to determine preselected construction process parameters of the wall guardrail concrete pouring and vibrating construction, wherein the preselected construction process parameters include a diameter of a vibrating rod, a vibrating frequency of the vibrating rod, a vibrating time, and a vibrating point spacing. A construction surface image at a preset height is obtained, the construction surface image is input into a bubble identification model, bubbles on the construction surface are identified and the size and quantity of the bubbles are obtained, and the vibrating time and the vibrating point spacing are gradient adjusted based on the size and quantity of the bubbles until the size and quantity of the bubbles on the construction surface are less than a preset threshold.

[0052] Preferably, based on specific production conditions, the corresponding quality grade obtained is different when the construction process parameters are different. In order to obtain the influence relationship of different construction process parameters on the quality grade, historical data is obtained in the construction record to serve as a data source support for the construction process parameter preselection model of the wall guardrail.

[0053] The historical data includes more than 10,000 pieces of data, which includes the quality grade of the wall guardrail of various thicknesses under different construction process parameters. The construction process parameter preselection model of the wall guardrail is constructed based on the mapping relationship between the collected historical construction process parameters and the corresponding detection data. Specifically, the historical construction process parameters of the wall guardrail include the thickness of the wall guardrail, the cement grade, the sand-cement ratio of the cement, the diameter of the vibrating rod, the vibrating time, the vibrating point spacing, the vibrating frequency of the vibrating rod, and the detection data of the wall guardrail includes the quality grade of the guardrail.

[0054] Specifically, the data set is constructed by using the thickness of the wall guardrail, the cement grade, the sand-cement ratio of the cement, the diameter of the vibrating rod, the vibrating time, the vibrating point spacing, the vibrating frequency of the vibrating rod, and the corresponding quality grade of the guardrail.

[0055] Due to the inevitable noise in the historical data, in order to prevent the influence of the noise on the construction process parameter preselection model of the wall guardrail, the data set needs to be preprocessed to improve the accuracy of the prediction model. Data cleaning of the historical data can remove duplicate values and handle missing values, and data integration can be performed. In actual operation, the data can be processed by difference, logarithmic transformation, etc. as needed to meet the requirements of the model. In the scene where there is little abnormal data or missing data, in order to improve the processing efficiency, a support vector machine of a class can be used to denoise the data set, thereby reducing the noise interference.

[0056] In addition, in order to avoid the error being dominated by large value characteristics in the later accuracy verification, normalization processing is performed on all the data sets after preprocessing, and the data is normalized to 0-1.

[0057] The construction process parameter preselection model of the wall guardrail is constructed by using a neural network. In this embodiment, the basic configuration of the neural network includes an input layer, a first hidden layer, a second hidden layer, and an output layer. The number of neurons of the input layer is 4, which respectively corresponds to the cement grade, the sand-cement ratio of the cement, the thickness, and the expected quality grade of the wall guardrail. The first hidden layer is a fully connected layer with 32 neurons, and the activation function is a linear rectifier unit ReLU. The second hidden layer is a fully connected layer with 64 neurons, and the activation function is the same as that of the first hidden layer, which is also a linear rectifier unit ReLU. The role of the second hidden layer is to increase the nonlinear ability of the network, so that the neural network can learn more complex features. The output layer is used to output the preselected construction process parameters, and the number of neurons of the output layer is 4. The activation function is linear, and it respectively corresponds to the diameter of the vibrating rod, the vibration frequency of the vibrating rod, the vibration time, and the spacing of the vibration points.

[0058] The preprocessed data set is divided into a training set and a test set according to a ratio of 8:2. 80% of the preprocessed data set is used for training of the neural network, and 20% of the preprocessed data set is used for testing of the neural network. At the same time, an adaptive moment estimation optimizer is used to accelerate the training process and improve the stability of the model, so that the construction process parameter preselection model of the wall guardrail can adaptively adjust the learning rate, so that the construction process parameter preselection model of the wall guardrail converges faster and achieves better results.

[0059] The training steps of the construction process parameter preselection model of the wall guardrail include sequentially inputting the data in the training set into the construction process parameter preselection model of the wall guardrail, until all the data in the training set are input into the construction process parameter preselection model of the wall guardrail, and the training process ends.

[0060] The trained construction process parameter preselection model of the wall guardrail is tested by using the test set to evaluate the accuracy of the construction process parameter preselection model of the wall guardrail. When the accuracy of the construction process parameter preselection model of the wall guardrail meets the requirements, the training ends.

[0061] Specifically, the accuracy of the construction process parameter preselection model of the wall guardrail is verified by the mean square error MSE provided by the following formula:

[0062]

[0063] wherein,

[0064] MSE is the mean square error, y i is the true value of the quality grade of the i-th guardrail, is the predicted value of the quality level of the i-th guardrail, and n is the total number of guardrails.

[0065] The mean square error MSE is a commonly used index for measuring the degree of difference between the predicted value and the true value. In the present application, when the mean square error MSE is less than 0.5, it indicates that the accuracy has reached the requirement.

[0066] The preselected model of construction process parameters of the constructed wall-type guardrail can be used to determine the preselected construction process parameters during the concrete pouring and vibrating construction of the wall-type guardrail. In actual use, by inputting the cement grade, sand-cement ratio, thickness and desired quality level of the wall-type guardrail into the preselected model of construction process parameters of the wall-type guardrail, the preselected construction process parameters during the concrete pouring and vibrating construction of the wall-type guardrail can be obtained, so as to guide the actual production.

[0067] Since the actual working condition during construction cannot completely match the preset working condition, in order to improve the quality level of the wall-type guardrail construction as much as possible, it is necessary to correct the construction process parameters again during the construction process.

[0068] Specifically, when the construction reaches the preset height, the construction surface image at the preset height is obtained, the construction surface image is input into the bubble recognition model, the bubbles on the construction surface are recognized and the size and number of the bubbles are obtained, the time of vibrating and the spacing of vibrating points are gradient adjusted based on the size and number of the bubbles, until the size and number of the bubbles on the construction surface are less than the preset threshold, thereby ensuring that the quality level of the wall-type guardrail construction meets the expectation.

[0069] Preferably, since the length range of each station is relatively wide, the construction surface at the preset height may have unevenness or inclination, therefore, in the pouring process, the mean value of multiple measurement values is taken as the reference of the preset height, and the construction surface image at the preset height is obtained, including the following steps:

[0070] The multiple point height values on the construction surface of the wall-type guardrail at the same time point during the pouring and vibrating construction process are obtained in real time, the average height value is determined based on the multiple point height values, the relative height difference is obtained by subtracting the average height value from the preset height value, and it is judged whether the relative height difference falls within the preset height tolerance range, when the relative height difference falls within the preset height tolerance range, the construction surface image at this time is obtained.

[0071] Specifically, the bubble recognition model is constructed based on the improved YOLOv5 model, the construction surface image is used as the input of the improved YOLOv5 model, the image processing technology is used for picture processing, the number of bubbles and the edges of the bubbles are recognized, the size of the edges of the bubbles is defined, and finally the number of bubbles and the size of the bubbles are taken as the output of the improved YOLOv5 model.

[0072] The air mixed in the stirring and pouring process, the gas generated by the chemical reaction forms bubbles, the vibration liquefies the concrete, reduces the internal friction, and makes the bubbles rise and discharge under the action of buoyancy. The spacing of the vibrating points has a significant impact on the size and distribution of the bubbles in the concrete pouring process, which is a key factor for the density and final quality of the concrete. In actual construction, the optimal spacing of the vibrating points should be controlled at 0.8 times to 1.2 times of the effective action radius, usually 30 cm to 50 cm. The effective action radius is usually 8 times to 10 times of the diameter of the vibrating rod, for example, φ50 mm rod ≈ 40 cm to 50 cm radius. If the spacing of the vibrating points is too large, it will cause large bubbles to gather to form bubble strings and cavities, so that the surface of the concrete becomes a honeycomb rough surface, and the concrete is reduced by more than 30%. If the spacing of the vibrating points is too small, it will cause small bubbles but a large number of bubbles, and the bubbles are "trapped" between adjacent vibrating points and cannot escape. If the vibration is too much, it will cause segregation and thickening of the surface floating slurry layer. Therefore, in actual construction, the vibration time and the spacing of the vibrating points should be dynamically adjusted in combination with the actual action factors.

[0073] Preferably, the vibration time and the spacing of the vibrating points are gradient adjusted based on the following formula,

[0074]

[0075] D=(1+f)D1,

[0076] Wherein, T is the adjusted vibration time, t is the preselected vibration time, d is the diameter of the bubble, d max is the maximum diameter of the allowed bubble, n is the number of bubbles, n max is the maximum number of allowed bubbles, D is the adjusted spacing of the vibrating points, f is the adjustment coefficient, f=[-0.2-0.100.10.2], D1 is the preselected spacing of the vibrating points. In actual construction, if the bubble diameter identified by the bubble identification model is too small, the spacing of the vibrating points needs to be increased, that is, the adjustment coefficient f is increased. If the bubble diameter identified by the bubble identification model is too large, the spacing of the vibrating points needs to be reduced, that is, the adjustment coefficient f is reduced.

[0077] Based on the above method, the embodiment also provides a system for determining the construction process parameters of the wall-type guardrail concrete pouring and vibrating, like Figure 2As shown, the method comprises a first obtaining module, a determining module, a second obtaining module, an identifying module and an adjusting module. Specifically, the first obtaining module is configured to obtain the cement grade, the sand-cement ratio, the thickness and the expected quality grade of the wall guardrail. The determining module is configured to input the cement grade, the sand-cement ratio, the thickness and the expected quality grade of the wall guardrail into a preselected construction process parameter model of the wall guardrail, and determine the preselected construction process parameter of the wall guardrail concrete pouring and vibrating construction. The preselected construction process parameter comprises the diameter of the vibrating rod, the vibrating frequency of the vibrating rod, the vibrating time and the interval of the vibrating points. The second obtaining module is configured to obtain the construction surface image at a preset height. The identifying module is configured to input the construction surface image into a bubble identifying model, identify the bubbles on the construction surface, and obtain the size and the number of the bubbles. The adjusting module is configured to perform gradient adjustment on the vibrating time and the interval of the vibrating points based on the size and the number of the bubbles, until the size and the number of the bubbles on the construction surface are less than a preset threshold value.

[0078] A computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the method for determining the wall guardrail concrete pouring and vibrating construction process parameter as described above.

[0079] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM can be in various forms such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0080] A wall guardrail concrete pouring and vibrating operation platform comprises the computer readable storage medium as described above, the computer readable storage medium is electrically connected with the processor, and further comprises an infrared measuring device and a camera device. The infrared measuring device is configured to obtain the height value of the construction surface. The camera device is configured to obtain the construction surface image at a preset height. The camera device and the infrared measuring device are both electrically connected with the processor.

[0081] The communication interface is arranged between the computer readable storage medium and the processor, and realizes signal connection and data transmission between the two.

[0082] The processor can be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to perform the operations described herein.

[0083] The method provided by the wall guard concrete pouring and vibrating construction process parameter determination method and device comprises two stages to ensure the quality level of the wall guard, first, in the construction preparation stage, the cement grade, the cement sand ratio, the thickness and the expected quality level of the wall guard are obtained and input into a wall guard construction process parameter preselection model to determine the preselected construction process parameters of the wall guard concrete pouring and vibrating construction, the wall guard construction process parameter preselection model is supported by historical experience data, and the influence of personal ability on the quality parameters of each station is excluded, and second, in the construction stage, a bubble recognition model is used to recognize the bubbles on the construction surface and obtain the size and quantity of the bubbles, the vibrating time and the vibrating point spacing are adjusted based on the size and quantity of the bubbles, the influence of the missed vibration or the over-vibration on the safety, the durability and the surface quality of the structure of the concrete crash barrier is excluded by adjusting the local process parameters in the construction process, the consistency of the quality parameters of the guard on each station is ensured, the overall quality control level of the concrete crash barrier is improved, the construction efficiency is improved, the economic cost is reduced, the practicality is high, and the method is worth promoting.

[0084] The above disclosure is only the preferred embodiment of the present application, but the embodiments of the present application are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A method for determining the construction process parameters of wall-type guardrail concrete pouring and vibrating, characterized in that, The method comprises the steps of: obtaining the cement grade, sand-cement ratio, thickness and desired quality grade of the wall guardrail; inputting the cement grade, sand-cement ratio, thickness and desired quality grade of the wall guardrail into a construction process parameter preselection model of the wall guardrail to determine preselected construction process parameters of the wall guardrail concrete pouring and vibrating construction, wherein the preselected construction process parameters comprise the diameter of the vibrating rod, the vibrating frequency of the vibrating rod, the vibrating time and the interval of vibrating points; obtaining the construction surface image at a preset height; inputting the construction surface image into a bubble identification model to identify the bubbles on the construction surface and obtain the size and quantity of the bubbles; gradient adjusting the vibrating time and the interval of vibrating points based on the size and quantity of the bubbles until the size and quantity of the bubbles on the construction surface are less than a preset threshold.

2. The method of determining the process parameters for the wall-type guardrail concrete pouring and vibrating construction according to claim 1, characterized in that, The construction process parameter preselection model of the wall guardrail is constructed based on the mapping relationship among the thickness of the wall guardrail, the diameter of the vibrating rod, the vibrating time, the interval of vibrating points, the vibrating frequency of the vibrating rod and the guardrail quality grade.

3. The method of determining the process parameters for the wall-type guardrail concrete pouring and vibrating construction according to claim 1, characterized in that, The bubble identification model is constructed based on an improved YOLOv5 model.

4. The method of claim 1, wherein the method further comprises: determining the construction process parameters of the wall-type guardrail concrete pouring and vibrating construction based on the obtained data. The method of obtaining the construction surface image at a preset height comprises the steps of: real-time obtaining the height values of multiple points on the construction surface of the wall guardrail at the same time point in the pouring and vibrating construction process; determining the average height value based on the multiple height values; obtaining the relative height difference by subtracting the average height value from the preset height value; judging whether the relative height difference falls within the range of the preset height tolerance, and obtaining the construction surface image at this time when the relative height difference falls within the range of the preset height tolerance.

5. The method of determining the process parameters for wall-type guardrail concrete pouring and vibrating construction according to claim 1, characterized in that, gradient adjusting the vibrating time and the interval of vibrating points based on the following formula, D = (1 + f)D1, wherein T is the adjusted time of vibration, t is the preselected time of vibration, d is the diameter of the bubble, d max is the maximum diameter of the allowable bubble, n is the number of bubbles, n max is the maximum number of allowable bubbles, D is the interval of the vibration points after adjustment, f is the adjustment coefficient, f = [-0.2 -0.1 0.1 0.2], and D1 is the interval of the preselected vibration points.

6. A system for determining the construction process parameters of wall-type guardrail concrete pouring and vibrating, characterized in that, The method comprises the steps of: a first obtaining module is configured to obtain the cement grade, sand-cement ratio, thickness and desired quality grade of the wall guardrail; a determining module is configured to input the cement grade, sand-cement ratio, thickness and desired quality grade of the wall guardrail into a construction process parameter preselection model of the wall guardrail to determine preselected construction process parameters of the wall guardrail concrete pouring and vibrating construction, wherein the preselected construction process parameters comprise the diameter of the vibrating rod, the vibrating frequency of the vibrating rod, the vibrating time and the interval of vibrating points; a second obtaining module is configured to obtain the construction surface image at a preset height; an identification module is configured to input the construction surface image into a bubble identification model to identify the bubbles on the construction surface and obtain the size and quantity of the bubbles; an adjusting module is configured to gradient adjust the vibrating time and the interval of vibrating points based on the size and quantity of the bubbles until the size and quantity of the bubbles on the construction surface are less than a preset threshold.

7. A computer readable storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the method for determining the construction process parameters of the wall guardrail concrete pouring and vibrating construction.

8. A wall guardrail concrete pouring and vibrating construction platform, comprising the computer readable storage medium of claim 7, the computer readable storage medium being electrically connected with the processor, and further comprising: an infrared measuring device configured to obtain the height value of the construction surface. A camera is configured to acquire an image of a construction surface at a predetermined height, and the camera and the infrared measuring device are electrically connected to the processor.

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