Pile foundation concrete dosage prediction device and method

Abstract

The invention belongs to the technical field of constructional engineering, and provides a pile foundation concrete dosage prediction device and method.A straight rod and a control disc are arranged on a supporting body, and a first bubble piece and a second bubble piece are arranged on the straight rod; a signal receiving piece and a vertical laser emitting piece are arranged on the supporting body, the control disc is rotationally arranged on the supporting body, and a horizontal laser emitting piece is arranged on the control disc; during working, the depth and radius of the pile hole are determined by means of the first bubble piece, the deflection degree of bubbles in the first bubble piece and the distance detected by laser emission, and the accuracy of determining the overall volume of the pile hole is guaranteed; the concrete dosage is determined through the pile hole volume, the filling coefficient and the operation loss rate determined through the depth and the radius, the filling coefficient and the operation loss rate are determined according to the soil texture type, the accuracy of concrete dosage prediction is jointly improved by improving the accuracy of the overall volume of the pile hole and considering the influence of different soil textures on the concrete dosage, and the prediction accuracy of the concrete dosage is improved. The problem that the concrete pouring amount is insufficient or excessive is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and particularly relates to a device and method for predicting the concrete consumption of a pile foundation. Background Art

[0002] Manual digging of pile holes has significant advantages in engineering construction, such as low construction noise, simple operation, economical cost, and stable pile quality. Therefore, it has been widely used in past engineering projects.

[0003] However, in terms of the volume calculation before the concrete pouring of the pile body, most traditional methods adopt rough theoretical estimations, which often lead to two problems in the actual pouring process. One is that the concrete pouring volume is insufficient, affecting the construction progress; the other is that the concrete pouring is excessive, resulting in material waste and cost increase. The reasons for the inaccurate concrete consumption at least include that the dimensions such as the diameters of various parts of the pile hole are not standard, resulting in inaccurate overall volume calculation of the pile hole, and the influence of different soil qualities is not considered when determining the concrete consumption. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a device and method for predicting the concrete consumption of a pile foundation. By means of the first bubble member and the deflection degree of the bubbles in the first bubble member, as well as the distance detected by the laser emission detection, the depth and radius of the pile hole are determined, ensuring the accuracy of determining the overall volume of the pile hole; the concrete consumption is determined based on the volume of the pile hole determined by the depth and radius, the plumpness coefficient, and the operation loss rate. Among them, the plumpness coefficient and the operation loss are determined according to the soil type. By improving the accuracy of the overall volume of the pile hole and considering the influence of different soil qualities on the concrete consumption, the accuracy of the concrete consumption prediction is jointly improved, and the problem of insufficient or excessive concrete pouring is solved.

[0005] To achieve the above object, in the first aspect, the present invention provides a device for predicting the concrete consumption of a pile foundation, adopting the following technical solution:

[0006] A device for predicting the concrete consumption of a pile foundation includes a support body, as well as a straight rod and a control panel arranged on the support body;

[0007] A first bubble member capable of detecting verticality and a second bubble member capable of detecting horizontality are arranged on the straight rod; a signal receiving member and a vertical laser emitting member are arranged on the support body, the control panel is rotatably arranged on the support body, and a horizontal laser emitting member is arranged on the control panel;

[0008] Determine the pile hole depth and radius by means of the first bubble member and the deflection degree of the bubbles in the first bubble member, as well as the distance detected by laser emission; determine the concrete consumption based on the pile hole volume, plumpness coefficient and operation loss rate determined by the depth and radius, wherein the plumpness coefficient and operation loss are determined according to the soil type.

[0009] Further, scales are provided on both the first bubble member and the second bubble member.

[0010] Further, a plurality of first support rods are horizontally arranged on the support body, and a second support rod capable of being perpendicularly arranged with respect to the first support rod is provided at one end of each first support rod away from the support body.

[0011] Further, a display screen and an operation screen are provided on the support body.

[0012] In order to achieve the above object, in a second aspect, the present invention further provides a method for predicting the concrete consumption of a pile foundation, adopting the following technical solution:

[0013] A method for predicting the concrete consumption of a pile foundation uses the pile foundation concrete consumption prediction device as described in the first aspect, including: determining the pile hole depth and radius by means of the first bubble member and the deflection degree of the bubbles in the first bubble member, as well as the distance detected by laser emission; determining the concrete consumption based on the pile hole volume, plumpness coefficient and operation loss rate determined by the depth and radius, wherein the plumpness coefficient and operation loss are determined according to the soil type.

[0014] Further, the concrete consumption is equal to the product of the sum of the operation loss rate and a preset constant, the pile hole volume, and the plumpness coefficient.

[0015] Further, for a regular cylindrical pile body, the pile hole volume V is:

[0016] V = π·[cosβ·(L 1 +L 2 +L 3 +L 4 ) / 4] 2 ·z·sinα;

[0017] For a pile with unequal diameters, the pile hole volume V is:

[0018]

[0019] Wherein, β is the deflection degree of the bubbles in the second bubble member; L 1 、L 2 、L 3 and L 4The radius measured by the laser at different positions; z·sinα and h·sinα are the heights of the cylindrical pile body and the pile body of the unequal-diameter pile respectively, z and h are the depths of the cylindrical pile body and the unequal-diameter pile measured by the laser signal, and α is the deflection degree of the bubble in the first bubble component.

[0020] Furthermore, for the part where the laser is blocked, the height H and the radius R of the pile body are:

[0021] H = l·cosβ·tanα;

[0022] R = max(h·cosα, l·cosβ);

[0023] Wherein, l is the measured data of the horizontal laser; h is the measured data of the vertical laser.

[0024] Furthermore, the larger the soil particles and the higher the porosity of the soil, the greater the filling coefficient.

[0025] Furthermore, for soft soil geology, the filling coefficient is taken as 1.3 and the operation loss rate is 7%; for sandy soil, the filling coefficient is 1.2 and the operation loss rate is 5%; for clay, the filling coefficient is 1.15 and the operation loss rate is 3%.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In the present invention, a straight rod and a control panel are arranged on the support body. A first bubble component capable of detecting verticality and a second bubble component capable of detecting horizontality are arranged on the straight rod; a signal receiving component and a vertical laser emitting component are arranged on the support body. The control panel is rotatably arranged on the support body, and a horizontal laser emitting component is arranged on the control panel; during operation, by means of the first bubble component and the deflection degree of the bubble in the first bubble component, as well as the distance detected by the laser emission, the depth and radius of the pile hole are determined, ensuring the accuracy of determining the overall volume of the pile hole; the concrete dosage is determined by the volume of the pile hole, the filling coefficient, and the operation loss rate determined by the depth and radius. Among them, the filling coefficient and the operation loss are determined according to the soil type. By improving the accuracy of the overall volume of the pile hole and considering the influence of different soil types on the concrete dosage, the accuracy of predicting the concrete dosage is jointly improved, and the problem of insufficient or excessive concrete pouring amount is solved. Description of the Drawings

[0028] The schematic diagram of the accompanying drawings forming a part of this embodiment is used to provide a further understanding of this embodiment. The illustrative embodiments and descriptions thereof of this embodiment are used to explain this embodiment and do not constitute an improper limitation to this embodiment.

[0029] Figure 1 It is a schematic structural diagram of the device according to Embodiment 1 of the present invention;

[0030] Among them, 1 is a straight rod; 2 is a first bubble member; 3 is a second bubble member; 4 is a display screen; 5 is an operation screen; 6 is a signal receiving member; 7 is a vertical laser emitting member; 8 is a control panel; 9 is a support body; 10 is a first support rod; 11 is a second support rod; 12 is a scale; 13 is a horizontal laser emitting member; 14 is a connecting member; 15 is a bracket. Detailed implementation mode

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed description is exemplary and is intended to provide further description of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0033] Embodiment 1:

[0034] As Figure 1 shown, this embodiment provides a device for predicting the concrete consumption of a pile foundation, including a straight rod 1, a first bubble member 2, a second bubble member 3, a display screen 4, an operation screen 5, a signal receiving member 6, a vertical laser emitting member 7, a control panel 8, a support body 9, a first support rod 10, a second support rod 11, a scale 12, a horizontal laser emitting member 13, a connecting member 14, a bracket 15, etc.

[0035] The straight rod 1 can be set as a vertical rod, horizontally, vertically and / or obliquely arranged on the support body 9; the straight rod 1 is provided with a first bubble member 2, a second bubble member 3, a connecting member 14, a bracket 15, etc. The first bubble member 2 and the second bubble member 3 are provided with scales 12 around them; the lower end of the straight rod 1 is connected to the control panel 8 or the support body 9, and the control panel 8 is provided with a display screen 4, an operation screen 5, a signal receiving member 6, a vertical laser emitting member 7, and a horizontal laser emitting member 13; the control panel 8 is arranged on the support body 9; the first support rod 10 and the second support rod 11 are arranged on the support body 9.

[0036] Optionally, the first bubble member 2 and the second bubble member 3 at least include bubbles capable of measuring verticality and / or horizontality, and a transparent container for accommodating the bubbles, which can be realized by existing technologies, such as the bubble structure on a level. The first bubble member 2 and the second bubble member 3 are provided with the scales 12 around them, which are used to ensure the vertical and horizontal accuracy during measurement. When adjusting the measuring device, by observing whether the first bubble member 2 is centered, it can be judged whether the straight rod 1 is in a vertical state, so as to ensure the accuracy of the measurement result. Similarly, when adjusting the measuring device, it is necessary to observe whether the second bubble member 3 is centered to judge whether the first support rod 10 is in a horizontal state, which is also an important step to ensure the accuracy of the measurement result.

[0037] Optionally, the connecting member 14 is a bolt or other component that can achieve connection; the connecting member 14 connects the straight rod 1 and can be infinitely extended in the vertical direction, increasing the measurement depth of the pile body. At the same time, the laser measurement is in a straight line direction. In more complex cases, there will be some areas that block the laser information. Based on this, by setting the connecting members 14 at both ends of the straight rod 1, multiple straight rods 1 can be connected to lower the entire device in the depth direction. In this way, some blocked information can be measured, achieving the accuracy of pile diameter and pile body measurement. The main purpose of the design of setting the connecting member 14 on the straight rod 1 is to facilitate the installation and disassembly process of the equipment. In actual operation, as a key connecting member, the connecting member 14 allows users or technicians to easily install or disassemble the straight rod 1 and its related equipment components by tightening or loosening the bolts.

[0038] The control panel 8 can be fixedly or rotatably arranged on the support body 9. The control panel 8 can rotate around a fixed axis. When measuring the pile body diameter, it can better measure the distances from the edges of multiple hole walls, and thus obtain more accurate data information on the distances between the measured hole walls and the pile body diameter.

[0039] For example, when rotatably arranged on the support body 9 through components such as bearings, rotating shafts, rotating motors, or other components, by rotating the control panel 8, the horizontal laser emitter 13 can work at different positions. The control panel 8 is provided with a display screen 4 and an operation screen 5. The display screen 4 can be used to display measurement data and calculation results, such as pile body radius, height, and volume, etc.; in this way, users can intuitively see the measurement and calculation results, facilitating subsequent construction operations. The operation screen 5 can provide a user input and operation interface, such as selecting a measurement mode, inputting pile body parameters, etc. Through the button operation screen, users can flexibly set and adjust measurement parameters to meet different construction requirements and ensure the accuracy of measurement results, and can better achieve the measurement of the volume of pile body concrete.

[0040] The support body 9 can be set as a plate-like structure or other structures. The first support rod 10 and the second support rod 11 can adopt structures such as telescopic rods to improve the adjustment flexibility. The support body 9 connects the control panel 8 and the first support rod 10 to ensure the structural integrity and stability of the entire measuring device. The first support rod 10 and the support body 9 can be connected by bolt connectors, hinge joints or other connectors to provide horizontal support for the measuring device, ensure the horizontal accuracy during measurement, and can freely rotate the angle at the same time, increasing the flexibility and applicability of the device, so that it can adapt to piles of different shapes and sizes. The second support rod 11 can be connected to the first support rod 10 by bolt connectors, hinge joints or other connectors to provide vertical support for the measuring device, ensure the vertical accuracy during measurement, and can adjust the levelness together with the first support rod 10 by adjusting the angle or length of the second support rod 11 in the vertical direction to meet the measurement requirements of different piles. In some embodiments, the first support rod 10 and the second support rod 11 can freely rotate the angle. This increases the flexibility and applicability of the device, so that it can adapt to piles of different shapes and sizes.

[0041] The bracket 15 can be set in the form of an inclined bracket, etc., which ensures the effective connection between the straight rod 1 and the support body 9, enables the straight rod 1 to be infinitely extended in the vertical direction while ensuring the effective connection between the two, and can better achieve the measurement result by extending the straight rod 1 when measuring the diameter of the lower part of the pile body. The bracket 15 ensures the integrity between the straight rod 1 and the support body 9 and can more effectively improve the measurement result.

[0042] The signal receiving member 6, the vertical laser emitting member 7, and the horizontal laser emitting member 13 can all be realized by conventional laser receivers and laser emitters, etc.

[0043] The first bubble member 2 and the second bubble member 3 are surrounded by scales 12. The second bubble member 3 is used to indicate the horizontal direction. If there is deflection, it means that the device is inclined in the horizontal direction. The first bubble member 2 is used to indicate the vertical direction. If there is deflection, it means that the device is inclined in the vertical direction. The scales 12 around provide the specific degree and direction information of the deflection. By reading these scales, the inclination angles of the device in the horizontal and vertical directions can be calculated. Through the inclination angles, the collected laser data can be corrected accordingly to eliminate the errors caused by the inclination.

[0044] For example, if the deflection angle of the bubbles in the first bubble member 2 is α degrees on scale 12, the distance measured by the vertical laser emitter 7 is the oblique distance, and the actual distance of the pile body should be H·sinα, where H is the height measured by the vertical laser emitter 7. If the deflection angle of the second bubble member 3 is β degrees on scale 12, the distance measured by the horizontal laser emitter 13 is the oblique distance. The average value of the distances measured by the four horizontal lasers is taken as the actual radius of the pile body, and the average radius of the pile body is

[0045] A signal receiver 6 and a vertical laser emitter 7 are provided on the control panel 8. By using laser ranging to determine the size of the pile, the volume of the pile body concrete can be measured quickly. Through the mutual cooperation of the signal receiver 6, the vertical laser emitter 7, and the horizontal laser emitter 13, laser ranging technology is used to quickly measure the size of the pile body, and then the concrete volume is calculated. The vertical laser emitter 7 emits a laser beam, which irradiates the pile body and is reflected back, and is received by the signal receiver 6. By measuring parameters such as the emission and reception time difference or phase difference of the laser beam, the round-trip distance of the laser beam can be calculated, and then the size (such as diameter) of the pile body can be obtained. Combining with the height parameter of the pile body, the volume of the pile body concrete can be calculated using the cylinder volume formula. For a regular cylindrical pile body, its volume V can be calculated by the formula V = π·[cosβ·(L 1 +L 2 +L 3 +L 4 ) / 4] 2 ·z·sinα, where z·sinα is the height of the pile body, and the average radius of the pile body is In the unequal-diameter pile foundation, it may be necessary to calculate the volume of each pile segment separately and sum them to obtain the total volume. The volume where the radius of the pile body is the average value of the data measured by the horizontal emitter at position 4, and the height of the pile body is the product of the distance measured by the vertical emitter and the rotation angle of the vertical bubble.

[0046] Through this embodiment, through the mutual cooperation of the vertical laser emitter, the horizontal laser emitter, and the signal receiver, the rapid and accurate measurement of the volume of the pile body concrete is realized. At the same time, the first support rod 10 and the second support rod 11 can rotate freely, which increases the flexibility and applicability of the equipment, enabling it to adapt to piles of different shapes and sizes. In addition, a display screen 4 and an operation screen 5 are equipped, further improving the operation efficiency, so that the construction personnel can calculate the required concrete pouring volume more conveniently and quickly.

[0047] Through this embodiment, the volume of the pile body concrete can be measured quickly and accurately, thus significantly improving the construction efficiency. Through precise measurement and calculation, the change in the pile body diameter can be fully considered, so as to obtain a more accurate prediction result of the concrete consumption, avoiding concrete waste or shortage caused by inaccurate calculation. Through the prediction of this embodiment, not only the calculation is accurate, but also the operation is simple. Through the integrated display screen and operation screen, the user can easily input the pile body parameters, view the measurement results, and make necessary adjustments. The convenient measurement form in this embodiment greatly simplifies the construction process and reduces the operation difficulty. The prediction device and method in this embodiment have wide applicability and can be applied to unequal-diameter pile foundations of various shapes and sizes. By adjusting the angle and position of the measurement frame, the user can flexibly adapt to different construction environments and requirements.

[0048] Embodiment 2:

[0049] This embodiment provides a method for predicting the concrete consumption of a pile foundation, which uses the pile foundation concrete consumption prediction device described in Embodiment 1, including: determining the pile hole depth and radius by means of the deflection degree of the bubble in the first bubble member and the distance detected by laser emission; determining the concrete consumption by the pile hole volume, the plumpness coefficient and the operation loss rate determined by the depth and radius, wherein the plumpness coefficient and the operation loss are determined according to the soil type. The concrete consumption is equal to the product of the sum of the operation loss rate and a preset constant, the pile hole volume, and the plumpness coefficient.

[0050] For a regular cylindrical pile body, the pile hole volume V is:

[0051] V = π · [cosβ · (L 1 + L 2 + L 3 + L 4 ) / 4] 2 · z · sinα;

[0052] For an unequal-diameter pile, the pile hole volume V is:

[0053]

[0054] where β is the deflection degree of the bubble in the second bubble member; L 1 , L 2 , L 3 and L 4 are the radii measured by laser at different positions; z · sinα and h · sinα are respectively the heights of the pile bodies of the cylindrical pile and the unequal-diameter pile, z and h are respectively the depths of the cylindrical pile and the unequal-diameter pile measured by the laser signal, and α is the deflection degree of the bubble in the first bubble member.

[0055] For the occluded part of the laser, the height H and radius R of the pile body are as follows:

[0056] H = l·cosβ·tanα;

[0057] R = max(h·cosα, l·cosβ);

[0058] Wherein, l is the measured data of the horizontal laser; h is the measured data of the vertical laser.

[0059] The larger the soil particles and the higher the porosity of the soil, the larger the plumpness coefficient. Further, for soft soil, the plumpness coefficient is taken as 1.3 and the operation loss rate is 7%; for sandy soil, the plumpness coefficient is 1.2 and the operation loss rate is 5%; for clay, the plumpness coefficient is 1.15 and the operation loss rate is 3%.

[0060] Example 3:

[0061] This example provides a method for predicting the concrete consumption of a pile foundation, using the device for predicting the concrete consumption of a pile foundation described in Example 1, and using and further supplementing the method for predicting the concrete consumption of a pile foundation described in Example 2. When using the device for predicting the concrete consumption of a pile foundation with unequal diameters, the laser irradiation path is a straight line. However, pile foundation construction is mostly carried out underground, and the geological conditions during construction are more complex. There will be a situation where the laser information of some areas of the pile body is blocked during the measurement of the pile foundation volume, resulting in the inability to measure the true size of this area. For the occluded part, according to the laser information at the edge of this area, the size of the occluded part is predicted through methods such as smoothing processing. For the occluded part, the linear interpolation method can be applied to predict the size of the occluded part. For example, the data of the vertical laser emitted by the vertical laser emitter is h1, and occlusion is encountered during measurement. The actual vertical size of the occluded part is predicted through the mutual cooperation of the horizontal laser emitted by the horizontal laser emitter, the bubbles in the first bubble member 2 and the second bubble member 3, and the vertical laser emitted by the vertical laser emitter 7. The vertical size of the plumb pile body is: H = l·cosβ·tanα, and the horizontal pile body radius is: R = max(h·cosα, l·cosβ), where: l is the measured data of the horizontal laser, and h is the measured data of the vertical laser.

[0062] For pile foundation construction in different soil types, various factors need to be considered to correct the calculation results of the plumpness coefficient and loss rate. First, the particle size analysis of the soil is carried out by the sieving method to determine the particle size distribution of the soil. The size of soil particles directly affects the plumpness coefficient of concrete. Soils with larger particles require a larger plumpness coefficient to ensure full filling of the concrete. Soils with a larger void ratio mean that more concrete is needed to fill these pores, so the plumpness coefficient may need to be adjusted to adapt to this situation. Generally speaking, the larger the soil particles and the higher the void ratio, the larger the plumpness coefficient may need to be increased accordingly. During the concrete construction process, certain losses will occur due to various reasons (such as transportation, pouring, vibration, etc.). These losses need to be adjusted through the operation loss rate.

[0063] Relevant engineering codes and standards usually give certain guiding values or ranges for the plumpness coefficient and operation loss rate. By experimentally determining parameters such as the particle size and void ratio of the soil, data support is provided for coefficient adjustment. Rich construction experience is also an important basis for adjusting the coefficient, especially when dealing with complex geological conditions.

[0064] By appropriately adjusting the plumpness coefficient and operation loss rate according to parameters such as soil particle size and void ratio, the final concrete consumption can be calculated more accurately, reducing waste and shortages. Accurate calculation of concrete consumption helps to avoid excessive material procurement and storage costs, while reducing construction delays and cost increases caused by material shortages. Reasonable concrete consumption can ensure the construction quality of the project and avoid quality problems caused by insufficient or excessive materials.

[0065] The influence and fine-tuning of soil particle size on the plumpness coefficient and operation loss rate: When the soil particle diameter is relatively large, usually greater than 2 mm, it generally means that there are more coarse-grained components in the soil, such as sandy soil or gravelly soil. Since the pores in the large-particle soil are larger, more concrete is needed to fill them, so the plumpness coefficient should be appropriately increased. Large-particle soil may cause the fluidity and uniformity of the concrete to deteriorate, increasing the construction difficulty and concrete loss. Therefore, the operation loss rate may need to be appropriately increased to cope with the possible increase in concrete loss and construction time. When the soil particle diameter is relatively small, usually less than 2 mm, it generally means that there are more fine-grained components in the soil, such as clay or loam. The pores in the small-particle soil are smaller and denser, and less concrete is needed to fill them. Therefore, the plumpness coefficient should be appropriately reduced. Small-particle soil is usually easier to mix with concrete, and the construction difficulty is relatively low. Therefore, the operation loss rate can be appropriately reduced to save costs and resources.

[0066] Influence and fine-tuning of void ratio on filling coefficient and operation loss rate: A larger void ratio means a larger proportion of pore volume in the soil. Soils with a larger void ratio require more concrete to fill the pores, so the filling coefficient should be appropriately increased. Soils with a larger void ratio may affect the fluidity and uniformity of the concrete, increasing the construction difficulty and concrete loss. Therefore, the operation loss rate may need to be appropriately increased to cope with the possible increase in concrete loss and construction time. A smaller void ratio means a smaller proportion of pore volume in the soil. Soils with a smaller void ratio require less concrete to fill the pores, so the filling coefficient should be appropriately decreased. Soils with a smaller void ratio are usually easier to mix with concrete, and the construction difficulty is relatively low. Therefore, the operation loss rate can be appropriately reduced to save costs and resources.

[0067] In summary, by comprehensively considering these two factors and the specific requirements of the project, a more accurate adjustment strategy can be formulated to ensure the smooth progress of the project and the rational use of resources. The following gives the values of the filling coefficient and operation loss rate for different soil conditions.

[0068] For pile foundations constructed in soft soil, due to the poor soil stability of the soft soil itself, the situation of hole wall collapse often occurs. Considering the soil stability during pile foundation construction, the filling coefficient and operation loss rate are appropriately adjusted for the calculation of the pile body concrete consumption of the equipment using the prediction method of concrete consumption for unequal-diameter pile foundations. For soft soil conditions, the filling coefficient is taken as 1.3 and the operation loss rate is 7%.

[0069] For sandy soil, due to the large voids between soil particles, the filling coefficient and operation loss rate are appropriately adjusted for the calculation of the pile body concrete consumption of the equipment using the prediction method of concrete consumption for unequal-diameter pile foundations according to parameters such as soil particle size and void ratio. The adjusted filling coefficient is 1.2 and the operation loss rate is 5%. For clay, the soil stability is good and the hole collapse phenomenon is less. The filling coefficient and operation loss rate are appropriately adjusted for the calculation of the pile body concrete consumption of the equipment using the prediction method of concrete consumption for unequal-diameter pile foundations. The adjusted filling coefficient is 1.15 and the operation loss rate is 3%. For relatively hard soil layers with good soil quality, the soil stability is good. Considering the soil hardness, the loss rate is usually low. However, attention should be paid to the situation where concrete may adhere to the formwork when the formwork is removed. The filling coefficient and operation loss rate are appropriately adjusted for the calculation of the pile body concrete consumption of the equipment using the prediction method of concrete consumption for unequal-diameter pile foundations. The adjusted filling coefficient is 1.05 and the operation loss rate is 1.5%. The final concrete consumption = total volume of pile foundation × filling coefficient × (1 + operation loss rate).

[0070] Example 4:

[0071] This embodiment provides a method for predicting the concrete consumption of a pile foundation, using the pile foundation concrete consumption prediction device described in Embodiment 1, and using and further supplementing the pile foundation concrete consumption prediction methods described in Embodiments 2 and 3. Taking the prediction of the concrete consumption of a pile foundation with unequal diameters as an example:

[0072] S1. Use the straight rod 1 to place the prediction device above the foundation pit of the manually dug pile.

[0073] S2. Place the straight rod 1 steadily above the foundation pit of the manually dug pile. Ensure the stability of the equipment to avoid errors during measurement.

[0074] S3. Adjust the position of the support 9 so that its center is aligned with the center of the foundation pit.

[0075] S4. Flexibly adjust the first support rod 10 and the second support rod 11 so that the support 9 can be stably erected around the foundation pit. This can ensure the stability of the equipment during measurement.

[0076] S5. Observe whether the bubbles in the first bubble member 2 and the second bubble member 3 are in the central position. If the bubbles are not in the central position, fine-tune the first support rod 10 and the second support rod 11 until both bubbles appear in the central position. This step is to ensure that the equipment is in a horizontal and vertical state during measurement, thereby improving the measurement accuracy.

[0077] S6. Start the operation screen 5 and the display screen 4. These two display screens will provide a user interaction interface for inputting pile parameters and displaying measurement results.

[0078] S7. Perform a measurement operation on the operation screen 5 to set the content to be measured.

[0079] S8. The corresponding values of the measurement content will appear above the display screen 4. These values include the diameter, height of the pile, and the calculated concrete volume, etc.

[0080] S9. Extract the measurement values to obtain the total volume of concrete required for pouring the pile body. This is the ultimate purpose of using this method for measurement.

[0081] Determination of pile parameters during use:

[0082] Definition: Borehole diameter D refers to the diameter of the borehole or the manually dug hole, which can be obtained through measurement or calculation. Pile depth Z refers to the depth of the pile underground, which can be measured by an instrument. Pile diameter change: According to the design requirements, determine the diameter change of the pile at different depths.

[0083] For each pile section with a different diameter, use the formula V = π·[cosβ·(L 1 +L2 +L 3 +L 4 ) / 4] 2 Calculate the concrete volume by ·z·sinα, where the average radius of the pile shaft is z·sinα is the height of the pile shaft.

[0084] In more complex cases, if the shape of the pile shaft is not a regular cylinder but has some variations (e.g., the radius varies along the pile shaft), integration may be required to calculate the volume.

[0085] Determine the function of the pile shaft shape:

[0086] Assume the radius of the pile shaft is

[0087] The value range of the pile shaft height z is from 0 to hsinα (pile length). The volume V of the pile shaft can be calculated by integrating the bottom area along the pile shaft height. The bottom area A = πr 2 = π·[cosβ·(L 1 +L 2 +L 3 +L 4 )]. Therefore, the volume Add up the concrete volumes of all pile segments to obtain the total volume of the pile foundation.

[0088] According to the construction method of the pile (such as bored cast-in-place pile, pipe-sinking cast-in-place pile, etc.), determine the concrete plumpness coefficient, which is the ratio of the actual amount of poured concrete to the theoretically calculated amount of concrete. Conventionally, the design dimensions of the pile body and the theoretical density of concrete are mostly used to calculate the theoretical concrete consumption. Optimize the pile body of the device for predicting the concrete consumption of the unequal-diameter pile foundation, select a suitable digging method according to the geological conditions, and use this device for laser-controlled excavation of the pile body diameter to avoid the formed hole diameter exceeding the designed pile diameter. At the same time, use the high-precision measurement of this device to accurately measure and record the volume of poured concrete to improve the accuracy of the plumpness coefficient.

[0089] Considering the concrete loss during the construction process, a reasonable loss rate is usually taken. Calculate the final concrete consumption according to the total volume of the pile foundation, the plumpness coefficient, and the operation loss. The formula is: Final concrete consumption = Total volume of the pile foundation × Plumpness coefficient × (1 + Operation loss rate). Among them, in the commercial concrete procurement contract, the standard of the loss rate is usually agreed upon. By using the device for predicting the concrete consumption of the unequal-diameter pile foundation, establish a perfect statistical and analysis system for concrete consumption, accurately count and analyze the concrete consumption during the construction process, and timely discover and solve the problem of excessive loss.

[0090] When the artificial dug pile is constructed with precast assembled retaining wall, subtracting the volume of the precast assembled retaining wall from the volume of the pile body concrete measured by the above-mentioned instrument will obtain the volume of the pile body concrete that needs to be poured for the artificial dug pile.

[0091] Example 5:

[0092] This embodiment provides a method for predicting the concrete consumption of pile foundation, using the device for predicting the concrete consumption of pile foundation described in Example 1, and using and further supplementing the methods for predicting the concrete consumption of pile foundation described in Examples 2, 3 and 4.

[0093] Suppose there is a pile foundation with unequal diameters, where the diameter of the pile changes from 1 meter to 0.8 meter at a depth of 5 meters underground, and the pile depth is 10 meters. The drilling diameter is 1.2 meters, the concrete filling coefficient is 1.05, and the operation loss rate is 1.5%.

[0094] Calculate the concrete volume of each section of the pile:

[0095] Upper section (0 - 5 meters): V1 = π×(1 / 2)^2×5 = 3.93m 3 .

[0096] Lower section (5 - 10 meters): V2 = π×(0.8 / 2)^2×5 = 2.51m 3 .

[0097] Total volume: V = V1 + V2 = 6.44m 3 .

[0098] Calculate the final concrete consumption: Final concrete consumption = 6.44m 3 ×1.05×1.015 = 6.86m 3 .

[0099] The method for predicting the concrete consumption of pile foundation with unequal diameters significantly improves the calculation accuracy through advanced measurement means, adjustable measurement framework, intelligent data processing and comprehensive consideration of various factors.

[0100] The method for predicting the concrete consumption of pile foundation with unequal diameters can avoid the problems of insufficient or excessive pouring of concrete, save costs and avoid waste, and is of great significance for improving construction efficiency and project quality.

[0101] The above are only the preferred embodiments of this embodiment and are not used to limit this embodiment. For those skilled in the art, this embodiment can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this embodiment shall be included within the protection scope of this embodiment.

Claims

1. A pile foundation concrete consumption prediction device, characterized in that: It comprises a support body, and a straight rod and a control plate arranged on the support body; The straight rod is provided with a first bubble member capable of detecting verticality, and a second bubble member capable of detecting horizontality; the support body is provided with a signal receiving member and a vertical laser emitting member, the control panel is rotatably provided on the support body, and the control panel is provided with a horizontal laser emitting member; The depth and radius of the pile hole are determined by means of the first bubble piece and the degree of deflection of the bubbles in the first bubble piece, as well as the distance of laser emission detection; the amount of concrete is determined by the pile hole volume determined by the depth and radius, the filling coefficient and the operating loss rate, wherein the filling coefficient and the operating loss are determined according to the soil type.

2. A pile foundation concrete consumption prediction device as claimed in claim 1, characterized in that: The first bubble piece and the second bubble piece are both provided with scales.

3. A pile foundation concrete consumption prediction device as claimed in claim 1, characterized in that: A plurality of first support rods are horizontally arranged on the support body, and a second support rod which can be arranged vertically with the first support rod is arranged at one end of each first support rod away from the support body.

4. A pile foundation concrete consumption prediction device as claimed in claim 1, characterized in that: A display screen and an operation screen are arranged on the support body.

5. A method for predicting the amount of concrete used for pile foundation, characterized in that: A pile foundation concrete consumption prediction device as described in any one of claims 1 to 4 is used, comprising: determining the depth and radius of the pile hole with the help of the first bubble part and the degree of deflection of the bubble in the first bubble part, and the distance of laser emission detection; determining the concrete consumption through the pile hole volume determined by the depth and radius, the filling coefficient and the operating loss rate, wherein the filling coefficient and the operating loss are determined according to the soil type.

6. A method for predicting the amount of pile foundation concrete as claimed in claim 5, characterized in that: The amount of concrete consumed is equal to the product of the sum of the operating loss rate and a preset constant, the pile hole volume, and the filling coefficient.

7. A method for predicting the amount of concrete used for pile foundation according to claim 6, characterized in that: For a regular cylindrical pile body, the pile hole volume V is: V=π·[cosβ·(L1+L2+L3+L4) / 4] 2 ·z·sinα; For piles of unequal diameters, the pile hole volume V is: Where β is the deflection degree of the bubble in the second bubble piece; L1, L2, L3 and L4 are the radii measured by laser at different positions; z·sinα and h·sinα are the heights of the cylindrical pile body and the pile body of unequal diameter pile, respectively; z and h are the depths of the cylindrical pile body and the unequal diameter pile measured by the laser signal respectively, and α is the deflection degree of the bubble in the first bubble part.

8. A method for predicting the amount of concrete used for pile foundation according to claim 7, characterized in that: For the part where the laser is blocked, the height H and radius R of the pile are: H = l·cosβ·tanα; R = max(h·cosα,l·cosβ); Among them, l is the horizontal laser measurement data; h is the vertical laser measurement data.

9. A method for predicting the amount of concrete used for pile foundation according to claim 6, characterized in that: The larger the soil particles and the higher the porosity, the greater the filling coefficient.

10. A method for predicting the amount of concrete used for pile foundation according to claim 9, characterized in that: For soft soil, the filling coefficient is 1.3 and the operating loss rate is 7%; for sand, the filling coefficient is 1.2 and the operating loss rate is 5%; for clay, the filling coefficient is 1.15 and the operating loss rate is 3%.

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