Construction quality control method for stockpiling yard

Abstract

The invention discloses a stockpiling field construction quality control method, which comprises the following steps of S1, dividing a stockpiling field into a finite element network through three-dimensional coordinates, calculating the stockpiling amount and node coordinates of each unit by combining a compaction degree requirement, an earthwork loose stockpiling density and an earthwork maximum dry density, and establishing a construction control network model; s2, taking the center coordinate of the bottom of the excavator and the vehicle inclination angle as a detection surface and a detection surface inclination angle respectively; the coordinates between the teeth of the excavator bucket and the vehicle inclination angle serve as a working face and a working face inclination angle respectively. During construction, the center point coordinates and the inclination angles of the vehicle working surface and the detection surface are calculated in combination with vehicle satellite real-time positioning signal analysis and inclination angle analysis, construction optimization suggestions and measures are provided for over-filling and under-filling of the detection surface, and the construction quality of the stockpiling yard is ensured.

Description

Technical Field

[0001] The present invention belongs to the field of engineering construction and more specifically relates to a method for controlling the construction quality of a storage yard. Background Art

[0002] During the construction of water conservancy, transportation, construction and other construction projects, a large amount of excavated earth and stone will inevitably be generated. In recent years, with the continuous expansion of the scale of projects, the amount of excavated earth and stone generated by a single project is proportional to the scale of the project, ranging from tens of thousands to tens of millions of cubic meters. Due to factors such as geographical location, transportation and cost, it is difficult to immediately dispose of a huge amount of earth and stone, which is usually stored nearby. As a result, a large number of stockpiles with stockpiling heights ranging from tens of meters to hundreds of meters have been generated. Stockpiles are unstable, and their instability risk is usually reduced by the design of soil and water conservation measures such as compaction, slope ratio, interception and drainage facilities, and slag dams. The compaction and slope ratio of the slope directly affect the stability and storage capacity of the stockpile, and also directly affect the safety and reliability of the stockpile. However, during the construction of the stockpile, the process control of the slope ratio and compaction is heavily dependent on the experience of the operator. The later quality assessment requires surveyors to re-measure a large number of coordinate points for verification and conduct compaction tests, resulting in large construction errors, high rework rates, low construction efficiency, and high resource consumption. Summary of the invention

[0003] Aiming at the difficulties in controlling the degree of compaction and the slope ratio during the construction of a storage yard, the present invention proposes a method for controlling the construction quality of a storage yard. The storage yard is divided into a finite element network through three-dimensional coordinates, and the storage volume and control coordinates of each unit are calculated in combination with the design requirements of the drawings to form a construction control network model. During construction, the center point coordinates and the inclination of the vehicle working surface and the detection surface are calculated in combination with the real-time satellite positioning signal analysis and the inclination analysis of the vehicle to determine whether the design requirements are met, and construction optimization suggestions and measures are proposed for overfilling and underfilling of the detection surface to ensure the construction quality of the storage yard.

[0004] The technical solution adopted by the present invention to solve this technical problem is: a method for controlling the construction quality of a storage yard, the control method comprising the following steps: Step S1, dividing the stockpile yard into a finite element network by three-dimensional coordinates, calculating the stockpile volume and node coordinates of each unit in combination with compaction requirements, loose packing density of earth and stone, and maximum dry density of earth and stone, and establishing a construction control network model; Step S2, using the center coordinates of the chassis of the excavator vehicle and the vehicle inclination angle as the detection surface and the detection surface inclination angle respectively; using the coordinates between the teeth of the excavator bucket and the vehicle inclination angle as the working surface and the working surface inclination angle respectively; Combined with satellite real-time positioning signals, vehicle inclination angle, and vehicle size data, coordinate conversion is achieved to calculate the center coordinates of the vehicle detection surface, the center coordinates of the working surface, and the center coordinates of the bottom of the working unit; Step S3, based on the center coordinates of the working surface and the center coordinates of the bottom of the working unit, the volume of earthwork that has been filled and the volume of earthwork that remains to be filled in the working unit are calculated, and the volume is fed back to the excavator operator; Step S4, when constructing the slope position, calculate the slope ratio of the working surface and the slope ratio of the detection surface according to the inclination angle of the excavator, and compare them with the corresponding unit in the construction control network model in combination with the coordinate data of the detection surface. If the data are consistent, the design requirements are met and the completion of this unit is confirmed. If they are inconsistent, the over-square or under-square volume of the detection surface is calculated and fed back to the operator; among them, the coordinates of the detection surface can be deduced based on the coordinates of the vehicle center point O (the height and width of the vehicle are fixed), and then compare the coordinates of the detection surface with the coordinate data in the construction control network model to determine whether the construction is completed as required.

[0005] Step S5: After all operation units and inspection units are completed and all are inspected and qualified, the actual coordinate network diagram of the construction is output to complete the construction.

[0006] As a further solution of the present invention, a vehicle-mounted construction quality control system is adopted in the control method.

[0007] As a further solution of the present invention, the vehicle-mounted construction quality control system includes a positioning device (GNSS), an inclinometer, an angle sensor, and a data analysis and display terminal, and the data analysis and display terminal is connected to the positioning device, the inclinometer and the angle sensor; The positioning device is used to obtain the geographic coordinates of the vehicle; the inclinometer is used to obtain the inclination angle θ between the vehicle and the horizontal plane. The excavator's arm, arm and bucket rotation are all provided with angle sensors for measuring the rotation angle.

[0008] Before construction, the computer generates a construction control network model based on the drawings, compaction requirements, loose packing density of earth and rock, and maximum dry density data of earth and rock, and imports it into the vehicle-mounted construction quality control system. During construction, the system calculates the current working surface and detection surface data in real time based on the vehicle's real-time positioning information, inclination information, and angle sensor information, and generates operation prompts for the current working unit and detection unit to the excavator driver on the display terminal to assist in construction quality control.

[0009] As a further solution of the present invention, the construction control network model establishment method is: 1) According to the design requirements and slope ratio in the design drawings, the stockpile yard is divided into a finite number of unit networks according to a certain length, width and height, and the node coordinates of each unit grid are obtained as the construction control coordinates, and the volume V of each unit grid is obtained (the length, width and height of the unit are set by comprehensively considering the calculation amount, construction equipment size and construction equipment operation area); 2) According to the compaction requirements in the design drawings, assign each unit grid compaction Pi ; 3) Obtain the loose bulk density ρ of the earth and stone to be filled according to the test n and the maximum dry density ρ max .

[0010] 4) Calculate the earthwork filling volume V of each unit grid according to the following formula: i ; .

[0011] As a further solution of the present invention, in the step S2, a reference coordinate system is established with the rotation center of the excavator as the origin, the X-axis is along the length direction of the excavator body, the Y-axis is along the width direction of the excavator body, and the Z-axis is along the opposite direction of gravity. The actual installation height of the positioning device and the length from the center axis of the construction vehicle are converted into the origin coordinates (x0, y0, z0).

[0012] As a further solution of the present invention, in step S4, the elevation tolerance is set, and the construction quality of the storage yard is judged according to the following conditions: When the detection surface positioning data and slope ratio data are consistent with the corresponding unit of the construction control network model, the detection unit is judged to be qualified; when the detection surface positioning data and slope ratio data are inconsistent with the corresponding unit of the construction control network model, the detection unit is judged to be unqualified, and the remaining filling volume of the detection unit is calculated, with a positive value representing underfill and a negative value representing overfill; When the working surface positioning data and slope ratio data match the corresponding unit of the construction control network model, the working unit is judged to be qualified; when the working surface positioning data and slope ratio data do not match the corresponding unit of the construction control network model, the working unit is judged to be unqualified, and the remaining volume to be filled of the working unit is calculated, with a positive value representing underfill and a negative value representing overfill.

[0013] The present invention includes at least the following beneficial effects: In view of the difficulties in controlling the compaction degree and slope ratio during the construction of the storage yard, the present invention proposes a method for controlling the construction quality of the storage yard slope, which can simultaneously achieve high-precision control of the construction process quality and real-time monitoring of the process, avoiding the traditional method of relying on manual experience control, resulting in large construction errors, high rework rate, low construction efficiency, and high resource consumption.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a flow chart of the storage yard construction quality control method of the present invention; Figure 2 It is a schematic diagram of the operation of the excavator of the present invention. DETAILED DESCRIPTION

[0016] The present invention is described in detail and completely below in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly pointed out that the technical solutions and technical features provided in each part of the present invention, including the following description, can be combined with each other without conflict.

[0017] In addition, the embodiments of the present invention involved in the following description are generally only a part of the embodiments of the present invention, rather than all the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and implementations, and its specific implementation process is as follows: During slope construction, excavators are required to operate on the slope surface. The process control of slope ratio and compaction degree is heavily dependent on the operator's experience. The later quality assessment requires surveyors to re-measure a large number of coordinate points for verification and conduct compaction tests. The construction error is large, the rework rate is high, the construction efficiency is low, and the resource consumption is large. Therefore, a storage yard construction quality control method is designed, such as Figure 1~2 As shown, the following steps are included: (1) Install a locator, inclinometer, and angle sensor at appropriate locations on the excavator. The locator (GNSS) is fixedly installed to obtain the vehicle's geographic coordinates (x, y, z) in real time; the inclinometer is fixedly installed to obtain the inclination angle θ between the vehicle and the horizontal plane; there are three angle sensors, which are installed on the excavator's boom, arm, and bucket rotation to measure the rotation angle.

[0019] (2) Establish a reference coordinate system with the excavator's rotation center as the origin. The X-axis is along the length of the excavator body, the Y-axis is along the width of the excavator body, and the Z-axis is along the opposite direction of gravity. According to the actual installation height of the positioning device and the length from the center axis of the construction vehicle, it is converted into the origin coordinates (x0, y0, z0). The rotation center of the boom is O1, the rotation center of the arm is O2, and the rotation center of the bucket is O3. The key arm lengths of the mechanical working arms are: the calculated arm length of the boom is L1, the calculated arm length of the arm is L2, the calculated length of the bucket is the straight-line distance from the bucket's rotation center to the tooth tip is L3, and the distance from the boom's rotation center O1 to the excavator's rotation center O is L 30 The rotation angles of the boom, arm and bucket are θ1, θ2, θ3 respectively, and the rotation angle of the excavator is θ0. According to θ0 and L 30, the coordinates of O1 relative to O can be obtained. According to θ0, L1, and θ1, the coordinates of O2 relative to O1 can be obtained. According to θ0, L2, and θ2, the coordinates of O3 relative to O2 can be obtained. According to θ0, L3, and θ3, the coordinates of the tooth tip relative to O3 can be obtained, thereby obtaining the coordinates of the tooth tip relative to the rotation center of the excavator (x0+a, y0+b, z0+c), where a, b, and c are: .

[0020] (3) The tooth tip coordinates are used as the center coordinates of the working surface, and the earthwork filling volume V of the relevant unit is corresponding to it in the construction control network model. i and construction control coordinate information, where the center coordinates of the bottom of the operation unit are (x k0 ,y k0 , z k0 ).

[0021] (4) Taking the vehicle inclination angle θ as the inclination angle of the working surface, combined with the center coordinates of the working surface and the center coordinates of the bottom of the working unit, calculate the volume of earth and stone filled in the working unit V t , and further calculate the remaining earth and stone volume V to be filled in the operation unit y .

[0022] (5) The height of the rotation center from the bottom of the construction vehicle is h', and the coordinates of the center of the bottom of the excavator are (x0, y0, z0-h'), which are used as the center coordinates of the detection surface and correspond to the earthwork filling volume V of the relevant unit in the construction control network model. i ' and construction control coordinate information, where the center coordinates of the bottom of the detection unit are (x k0 ',y k0 ', z k0 ').` (6) Taking the vehicle inclination angle θ as the inclination angle of the detection surface, combined with the center coordinates of the detection surface and the center coordinates of the bottom of the detection unit, calculate the volume of earth and stone filled in the detection unit V t ', and further calculate the remaining earthwork volume V to be filled in the detection unit y '.

[0023] (7) According to the vehicle inclination angle, calculate the slope ratio of the working surface and the slope ratio of the test surface, set the allowable error γ of the slope ratio control, and compare it with the design slope ratio (1:a): (8) Set the allowable error of elevation and judge the construction quality of the storage yard based on the following conditions: When the detection surface positioning data and slope ratio data are consistent with the corresponding unit of the construction control network model, the detection unit is judged to be qualified; when the detection surface positioning data and slope ratio data are inconsistent with the corresponding unit of the construction control network model, the detection unit is judged to be unqualified, and the remaining volume to be filled in the detection unit is calculated, with a positive value representing underfill and a negative value representing overfill.

[0024] When the working surface positioning data and slope ratio data match the corresponding unit of the construction control network model, the working unit is judged to be qualified; when the working surface positioning data and slope ratio data do not match the corresponding unit of the construction control network model, the working unit is judged to be unqualified, and the remaining volume to be filled of the working unit is calculated, with a positive value representing underfill and a negative value representing overfill.

[0025] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A method for controlling the construction quality of a storage yard, characterized in that: The control method comprises the following steps: Step S1, dividing the stockpile yard into a finite element network by three-dimensional coordinates, calculating the stockpile volume and node coordinates of each unit in combination with compaction requirements, loose packing density of earth and stone, and maximum dry density of earth and stone, and establishing a construction control network model; Step S2, using the center coordinates of the chassis of the excavator vehicle and the vehicle inclination angle as the detection surface and the detection surface inclination angle respectively; using the coordinates between the teeth of the excavator bucket and the vehicle inclination angle as the working surface and the working surface inclination angle respectively; Combined with satellite real-time positioning signals, vehicle inclination angle, and vehicle size data, coordinate conversion is achieved to calculate the center coordinates of the vehicle detection surface, the center coordinates of the working surface, and the center coordinates of the bottom of the working unit; Step S3, calculating the volume of earthwork that has been filled in the working unit and the volume of earthwork that remains to be filled based on the center coordinates of the working surface and the center coordinates of the bottom of the working unit; Step S4: When constructing the slope position, calculate the slope ratio of the working surface and the slope ratio of the detection surface according to the inclination angle of the excavator, and compare them with the corresponding unit in the construction control network model in combination with the detection surface coordinate data. If the data are consistent, the design requirements are met and the unit is confirmed to be completed. If they are inconsistent, calculate the over-square or under-square volume of the detection surface; Step S5: After all operation units and inspection units are completed and all are inspected and qualified, the actual coordinate network diagram of the construction is output to complete the construction.

2. The method for controlling the construction quality of a storage yard according to claim 1, characterized in that: The control method adopts a vehicle-mounted construction quality control system.

3. The method for controlling the construction quality of a storage yard as claimed in claim 2, characterized in that: The vehicle-mounted construction quality control system includes a locator, an inclinometer, an angle sensor, and a data analysis and display terminal, wherein the data analysis and display terminal is connected to the locator, the inclinometer, and the angle sensor; The positioning device is used to obtain the geographic coordinates of the vehicle; the inclinometer is used to obtain the inclination angle θ between the vehicle and the horizontal plane. The excavator's arm, arm and bucket rotation are all provided with angle sensors for measuring the rotation angle.

4. The method for controlling the construction quality of a storage yard as claimed in claim 3, characterized in that: The construction control network model establishment method is: 1) According to the design requirements and slope ratio in the design drawings, the stockpile yard is divided into a finite number of unit networks according to a certain length, width and height, and the node coordinates of each unit grid are obtained as the construction control coordinates, and the volume V of each unit grid is obtained; 2) According to the compaction requirements in the design drawings, assign each unit grid compaction P i ; 3) Obtain the loose bulk density ρ of the earth and stone to be filled according to the test n and the maximum dry density ρ max ; 4) Calculate the earthwork filling volume V of each unit grid according to the following formula: i ; 。 5. The method for controlling the construction quality of a storage yard according to claim 1, characterized in that: In step S2, a reference coordinate system is established with the excavator's rotation center as the origin, with the X-axis along the length direction of the excavator body, the Y-axis along the width direction of the excavator body, and the Z-axis along the opposite direction of gravity. The coordinates of the origin (x0, y0, z0) are converted according to the actual installation height of the positioning device and the length from the center axis of the construction vehicle.

6. The method for controlling the construction quality of a storage yard according to claim 1, characterized in that: In step S4, the elevation tolerance is set, and the construction quality of the storage yard is judged according to the following conditions: When the detection surface positioning data and slope ratio data are consistent with the corresponding unit of the construction control network model, the detection unit is judged to be qualified; when the detection surface positioning data and slope ratio data are inconsistent with the corresponding unit of the construction control network model, the detection unit is judged to be unqualified, and the remaining filling volume of the detection unit is calculated, with a positive value representing underfill and a negative value representing overfill; When the working surface positioning data and slope ratio data match the corresponding unit of the construction control network model, the working unit is judged to be qualified; when the working surface positioning data and slope ratio data do not match the corresponding unit of the construction control network model, the working unit is judged to be unqualified, and the remaining volume to be filled of the working unit is calculated, with a positive value representing underfill and a negative value representing overfill.

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