Lime soil compaction device and construction method

Abstract

The invention discloses a lime soil compaction device and a construction method, and relates to the technical field of building construction. The device comprises a movable support frame, an elevation control mechanism, a compaction roller, a laser ranging module and a control unit, wherein the elevation control mechanism comprises a plurality of groups of independent hydraulic lifting rods and optional infrared position indicators; during construction, the elevation deviation of lime soil is detected in real time through laser ranging, the control unit drives the hydraulic lifting rod to dynamically adjust the height of the compaction roller, and the infrared positioning instrument eliminates accumulated movement errors. The problems that traditional manual measurement is low in precision, low in efficiency and high in cost are solved, the elevation control precision is within + / -5mm, the construction period is shortened by 20%-30%, the comprehensive cost is reduced by 15%-20%, construction data storage and BIM butt joint are supported, the method is suitable for scenes such as ultra-long and ultra-wide industrial factory buildings and photovoltaic workshops, and the method is suitable for popularization and application. And a high-precision, high-efficiency and low-cost standardized solution is provided for lime soil foundation construction.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a soil compaction device and construction method. Background Technology

[0002] In the construction of ultra-long and ultra-wide industrial plant floors with lime-soil foundations, precise control of the compaction elevation is a key technical indicator that directly affects the flatness, compaction, and subsequent floor construction quality of the foundation. Currently, the industry mainly uses traditional manual measurement or fixed ruler-assisted construction methods, which have the following prominent problems:

[0003] Low accuracy: Manual measurement relies on tools such as leveling rods and total stations, which are easily affected by the operator's skill level and ambient light / wind. The error of a single measurement can reach more than ±15mm, making it difficult to ensure the consistency of elevation in a large construction area. Fixed rulers are affected by mechanical vibration and fluctuations in soil particle size distribution, and the ruler readings are prone to deviation, further reducing control accuracy.

[0004] Low efficiency: Traditional methods require frequent pauses in compaction work and manual entry into the construction area to remeasure elevations. On average, work needs to be stopped every 30 minutes, and each remeasurement takes 5-10 minutes, which seriously disrupts the continuity of construction and extends the overall construction period by 15%-20%.

[0005] Poor adaptability: Existing road mixing equipment with automatic adjustment function can achieve a certain degree of automatic control, but the equipment purchase cost is high (and it mostly relies on imports). At the same time, it is sensitive to changes in soil moisture content and particle size distribution, making it difficult to adapt to complex soil conditions and prone to local elevation deviations.

[0006] Difficulty in quality traceability: There is no systematic data recording during the construction process, and only manual paper ledgers are relied upon. If quality problems such as floor settlement and cracking occur later, it is impossible to trace the specific deviations in the construction process and make it difficult to optimize the process in a targeted manner. Summary of the Invention

[0007] The purpose of this invention is to provide a soil compaction device and construction method to overcome the shortcomings of existing soil compaction technology, such as low accuracy of elevation control, low efficiency, poor adaptability and high cost.

[0008] The specific technical solution adopted by this invention is as follows:

[0009] A soil compaction device includes a movable support frame, an elevation control mechanism, a compaction roller, a laser ranging module, and a control unit;

[0010] The movable support frame includes a truss structure and wheels fixed to the bottom of the truss structure;

[0011] The elevation control mechanism consists of multiple sets of independent hydraulic lifting rods. The multiple sets of hydraulic lifting rods are equidistantly distributed along the longitudinal direction of the movable support frame, and the upper end of the hydraulic lifting rod is connected to the movable support frame, and the lower end is connected to the compaction roller.

[0012] The laser ranging module is fixedly installed on the movable support frame facing the surface of the gray soil, and is used to detect the elevation of the surface of the gray soil in real time.

[0013] The control unit is integrated inside the movable support frame and is communicatively connected to the laser ranging module and the hydraulic lifting rod, respectively. It is used to receive the elevation data output by the laser ranging module, calculate the deviation data between the elevation data and the set design elevation, and drive the hydraulic lifting rod to adjust the height according to the deviation data.

[0014] In some of these embodiments, the compaction roller is detachably connected to the lower end of each set of hydraulic lifting rods.

[0015] In some of these embodiments, the compaction roller is driven to rotate by a variable frequency motor.

[0016] In some embodiments, the variable frequency motor is electrically connected to the control unit, and the control unit adjusts the output speed of the variable frequency motor to achieve stepless adjustment of the rotation speed of the compaction roller within the range of 0.5-3m / min.

[0017] In some embodiments, the outer surface of the compaction roller is provided with spiral ridges.

[0018] In some embodiments, the control unit stores construction parameters, including design elevation values ​​and allowable elevation deviation ranges; the control unit has data storage functions to record elevation deviation values, hydraulic lifting rod adjustment parameters, and compaction trajectory data throughout the construction process, and supports exporting construction quality reports.

[0019] In some embodiments, the control unit supports data interface with an external BIM system to upload stored construction data to the BIM system.

[0020] In some embodiments, the hydraulic lifting rod adopts a multi-stage telescopic structure with a stroke adjustment range of 0-300mm.

[0021] In some embodiments, the movable support frame is provided with a fine-tuning mechanism, and infrared positioning devices are provided at both ends of the top of the movable support frame;

[0022] The two infrared positioning devices are linked to two reference points in the construction site's reference coordinate system, and the infrared positioning devices are also connected to the fine-tuning mechanism through a control unit to eliminate horizontal position deviations during the movement of the movable support frame.

[0023] In addition, the present invention also discloses a soil compaction construction method for the above-mentioned soil compaction device, comprising the following steps:

[0024] S1: Device installation and positioning: Move the movable support frame to the lime-soil paving area using the wheels, so that the movable support frame spans the construction area; if an infrared positioning device is configured, calibrate and connect the infrared positioning device to two reference points on the construction site.

[0025] S2: Parameter preset: Input construction parameters into the control unit. The construction parameters include the design elevation value, the allowable elevation deviation, and the initial rotation speed of the compaction roller.

[0026] S3: Start-up: Turn on the laser ranging module and the compaction roller, so that the movable support frame moves at a constant speed along the construction direction; the laser ranging module scans the elevation of the lime-soil surface in real time and sends deviation data to the control unit every 0.5-1 seconds;

[0027] S4: Real-time control: After receiving the deviation data, the control unit calculates the deviation value between the current soil surface and the design elevation; if the deviation value exceeds the allowable range and the soil surface is higher than the design elevation, the hydraulic lifting rod of the corresponding area is driven to press down to increase the compaction force of the compaction roller in that area; if the deviation value exceeds the allowable range and the soil surface is lower than the design elevation, the hydraulic lifting rod of the corresponding area is driven to lift up to reduce the compaction force of the compaction roller in that area.

[0028] S5: Data Export and Acceptance: After construction is completed, the control unit exports the elevation deviation distribution map and construction quality report, and guides subsequent floor construction or acceptance based on the report.

[0029] Compared with the prior art, the present invention has at least one of the following advantages or beneficial effects:

[0030] I. Significantly Improved Accuracy: Through laser ranging and infrared positioning, the elevation control error can be ≤ ±5mm. If an infrared positioning device is used, the overall positioning error can be reduced to ±3mm, which fully meets the stringent requirements of ultra-flat flooring (FF≥50 / FL≥40).

[0031] II. Improved construction efficiency: Traditional methods suffer from poor construction continuity due to frequent shutdowns and retesting. This device achieves continuous compaction and automatic calibration, eliminating the need for shutdowns and allowing for regional control to avoid rework, thus shortening the overall construction period by 20%-30%.

[0032] 3. Adapting to complex working conditions: In response to changes in the moisture content and particle size distribution of lime-soil, the compaction speed is infinitely adjusted by a variable frequency motor, and the control accuracy is not affected by soil fluctuations. The deviation rate is reduced from the traditional 8%-12% to below 1%.

[0033] IV. Significant Cost Advantages: Existing high-precision road mixing machines are expensive per unit. This device, equipped with general-purpose compaction machinery, has a modification cost of only 30%-40% of that of traditional equipment. It also reduces the need for 2-3 dedicated surveyors, resulting in a 15%-20% reduction in overall construction costs.

[0034] V. Quality Traceability and Controllability: Data such as elevation deviation and adjustment parameters recorded by the control unit can be exported as reports, supporting integration with the BIM system. Subsequent floor construction can directly reuse the elevation benchmark data, avoiding rework due to benchmark deviation, and the foundation acceptance pass rate can reach 100%. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the soil compaction device in an embodiment of the present invention;

[0036] Figure 2 This is a flowchart of the lime-soil compaction construction method in an embodiment of the present invention;

[0037] The components include: 1. Support frame; 2. Walking wheels; 3. Hydraulic lifting rod; 4. Laser ranging module; 5. Compacting roller; 6. Control unit; 7. Infrared positioning device; and 8. Reference point. Detailed Implementation

[0038] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0039] Example 1:

[0040] like Figure 1As shown, this invention discloses a soil-lime compaction device. Specifically, the soil-lime compaction device includes a movable support frame 1, an elevation control mechanism, a compaction roller 5, a laser ranging module 4, and a control unit 6. The movable support frame 1 serves as the main load-bearing body of the device, including a truss structure and wheels 2 fixed to the bottom of the truss structure. The movable support frame 1 adopts a truss structure design, balancing lightweight and high strength. The wheels 2 at the bottom are omnidirectional wheels, which can move flexibly along the construction direction and adapt to soil-lime paving areas of different widths (maximum span width can reach 20m). The elevation control mechanism consists of multiple sets of independent hydraulic lifting rods 3, which are equidistantly distributed along the longitudinal direction of the movable support frame 1. The upper end of each set of hydraulic lifting rods 3 is connected to the movable support frame 1, and the lower end is detachably connected to the compaction roller 5. The compaction roller 5 is driven to rotate by a variable frequency motor and compacts the soil. The outer surface of roller 5 is provided with spiral ridges; multiple sets of hydraulic lifting rods 3 are independently designed to ensure "regional control" and avoid local deviations caused by traditional overall adjustment. Each set of lifting rods responds independently to control commands and can individually supplement pressure in areas with uneven soil settlement; the laser ranging module 4 is fixedly installed on the movable support frame 1 facing the soil surface and is used to detect the elevation of the soil surface in real time; the laser ranging module 4 uses a high-precision laser sensor (measurement accuracy ±1mm) and a scanning frequency ≥10Hz to ensure real-time capture of soil surface elevation changes and avoid lag adjustment; the control unit 6 is integrated inside the movable support frame 1 and is communicatively connected to the laser ranging module 4 and the hydraulic lifting rods 3 respectively. It is used to receive the elevation data output by the laser ranging module 4, calculate the deviation data between the elevation data and the set design elevation, and drive the hydraulic lifting rods 3 to adjust the height according to the deviation data.

[0041] Specifically, the aforementioned variable frequency motor is electrically connected to the control unit 6. The control unit 6 adjusts the output speed of the variable frequency motor to achieve stepless adjustment of the rotation speed of the compaction roller 5 within the range of 0.5-3 m / min. The control unit 6 stores construction parameters, including the design elevation value and the allowable deviation range of the elevation. The control unit 6 has a data storage function to record the elevation deviation value, hydraulic lifting rod 3 adjustment parameters, and compaction trajectory data throughout the construction process. It also supports exporting construction quality reports and supports data interface with an external BIM system to upload the stored construction data to the BIM system. The hydraulic lifting rod 3 adopts a multi-stage telescopic structure, and its stroke adjustment range is 0-300 mm. Furthermore, the movable support frame 1 is equipped with a fine-tuning mechanism (not shown in the figure; specifically, this fine-tuning mechanism can be a hydraulic push rod or an electric push rod). Infrared positioning devices 7 are installed at both ends of the top of the movable support frame. The two infrared positioning devices 7 are linked to two reference points 8 in the construction site's reference coordinate system (i.e., the two reference points 8 are connected to the infrared positioning devices 7 at both ends of the movable support frame 1 via infrared signals). The infrared positioning devices 7 are also connected to the fine-tuning mechanism via a control unit 6 to eliminate horizontal position deviations during the movement of the movable support frame 1. Specifically, the infrared positioning devices 7 transmit positioning data to the control unit 6, and the control unit 6 corrects the deviation through the fine-tuning mechanism based on the deviation data. Specifically, the linkage between the two infrared positioning devices 7 and the two reference points 8 in the construction site's reference coordinate system is based on a three-dimensional reference coordinate system with millimeter-level precision. The two reference points are permanent control points located diagonally opposite each other in the construction area to avoid signal obstruction. The two infrared positioning devices 7 receive infrared signals containing absolute coordinates from the corresponding reference points, synchronously record the relative displacement of the support frame, and transmit the data to the control unit. The control unit uses a two-point positioning method to calculate the real-time absolute coordinates of the movable support frame, compares the deviation with the design coordinates, and corrects it through the fine-tuning mechanism driven by the control unit 6. It replaces the traditional relative displacement accumulation with "absolute coordinate calibration," calibrating to zero after each movement to break the error transmission chain; dual-reference point redundancy verification prevents signal interference and sensor failure, eliminates accumulated errors in support frame movement, and ensures the flatness and compaction requirements of the foundation for ultra-long and ultra-wide factory buildings.

[0042] Specifically, the aforementioned control unit 6 has a built-in PLC (Programmable Logic Controller) and touch screen, supporting manual parameter input and automatic control switching. Its data storage capacity is ≥16GB, capable of storing complete data for at least 3000㎡ of construction area. The aforementioned compaction roller 5 features a spiral convex design to increase contact friction with the soil, preventing slippage during compaction. The variable frequency motor drive is adaptable to different soil types—for example, low-speed (0.5-1m / min) compaction is used for soil with high moisture content (18%-22%), while high-speed (2-3m / min) compaction is used for soil with low moisture content (12%-15%). The aforementioned infrared positioning device 7 uses infrared ranging (positioning accuracy ±2mm) and is linked with the plant's benchmark point 8 to eliminate the offset of the support frame 1 caused by slippage of the walking wheels 2 or uneven ground, ensuring an overall positioning error ≤±3mm.

[0043] When using the above-mentioned lime-soil compaction device, before construction, the design elevation and allowable deviation are input into the control unit 6, and the infrared positioning instrument 7 is calibrated with the benchmark point 8. During construction, the device moves along the construction direction, and the laser ranging module 4 scans the lime-soil surface in real time, transmitting the elevation data to the control unit 6. The control unit 6 calculates the deviation by comparing it with the design elevation. If the lime-soil in a certain area is higher than the design elevation, the corresponding hydraulic lifting rod 3 is driven to press down, so that the compaction roller 5 increases the compaction force in that area and reduces the settlement difference. If the lime-soil in a certain area is lower than the design elevation, the hydraulic lifting rod 3 is driven to lift up, reducing the compaction force. At the same time, the control unit 6 records various data in real time, generates a compaction trajectory diagram and an elevation deviation report, and can be integrated with the BIM system for data reuse after construction is completed.

[0044] In the aforementioned soil compaction device, the laser ranging module 4 and the hydraulic lifting rod 3 form a real-time feedback closed loop, enabling "compacting and calibrating simultaneously" without manual intervention, thus solving the efficiency problem of traditional manual retesting. Multiple independent hydraulic lifting rods 3 are individually adjusted for local settlement areas, avoiding rework across the entire area and reducing material and time waste. Specifically, firstly, relying on the laser ranging module 4, the control unit captures the surface elevation data of the soil in each area in real time. When a settlement deviation (higher / lower than the design elevation) is detected in a local area (such as within a 5m×5m grid), it is not necessary to link all hydraulic lifting rods; only 1-2 independent hydraulic lifting rods corresponding to that local area are activated. If the soil in a localized area is higher than the design elevation (possibly due to insufficient compaction or loose soil in the early stages), the control unit drives the hydraulic lifting rod in that area to press down individually, increasing the local compaction force of the corresponding compaction roller (e.g., from the usual 200kN to 250kN). This concentrated compaction further densifies the loose soil, reducing the heave height and narrowing the deviation from the design elevation. If the soil in a localized area is lower than the design elevation (possibly due to over-compaction or uneven initial soil density), the hydraulic lifting rod in that area is raised individually, reducing the compaction force of the corresponding compaction roller (e.g., from 200kN to 150kN). This prevents further compaction from exacerbating settlement. Simultaneously, this can be combined with subsequent material replenishment (e.g., a small amount of soil filling) to achieve elevation correction through light compaction. This localized independent adjustment mode utilizes a distributed layout of multiple hydraulic lifting rods (typically set up according to the construction grid) and independent control logic to limit the adjustment range to the deviation area. It eliminates the need to adjust the compaction parameters for the entire area, avoiding delays and cost waste caused by rework across the entire area. It also precisely addresses localized settlement issues, ensuring overall foundation flatness. Infrared positioning device 7 eliminates cumulative movement errors, spiral textured compaction roller 5 enhances grip, and variable frequency motors adapt to different soil types, collectively improving adaptability to complex working conditions. Control unit 6 enables full recording of construction data and BIM integration, solving quality traceability problems and providing data support for subsequent processes.

[0045] Example 2:

[0046] like Figure 2 As shown, this embodiment also discloses a lime-soil compaction construction method, based on the lime-soil compaction device in Embodiment 1. Specifically, the construction method includes the following steps:

[0047] S1: Device Installation and Positioning: Move the movable support frame to the lime-soil paving area using its wheels, ensuring the frame spans the construction area. If an infrared locator is used, calibrate and connect it to two reference points on the construction site. Specifically, this calibration connection is based on a pre-established millimeter-precision three-dimensional reference coordinate system at the construction site. First, use a total station or other professional equipment to confirm the absolute coordinates of the two reference points and save them to the reference point signal transmitter. Then, pair the infrared locator (installed on the movable support frame) with the two reference points to ensure the locator can stably receive the infrared signals containing absolute coordinates emitted by the reference points. Simultaneously complete the calibration process of signal identification, coordinate matching, and data interaction, laying the foundation for subsequent real-time calculation of the support frame position and elimination of accumulated positioning errors.

[0048] S2: Parameter preset: Input construction parameters into the control unit. These construction parameters include the design elevation value, the allowable elevation deviation, and the initial rotation speed of the compaction roller.

[0049] S3: Start-up: Turn on the laser ranging module and the compaction roller, so that the movable support frame moves at a constant speed along the construction direction; the laser ranging module scans the elevation of the soil surface in real time and sends deviation data to the control unit every 0.5-1 seconds.

[0050] S4: Real-time control: After receiving the deviation data, the control unit calculates the deviation value between the current soil surface and the design elevation. If the deviation value exceeds the allowable range and the soil surface is higher than the design elevation, the hydraulic lifting rod of the corresponding area is driven to press down to increase the compaction force of the compaction roller in that area. If the deviation value exceeds the allowable range and the soil surface is lower than the design elevation, the hydraulic lifting rod of the corresponding area is driven to lift up to reduce the compaction force of the compaction roller in that area.

[0051] In addition, if an infrared positioning device is configured, the steps for implementing the control also include:

[0052] The infrared positioning device receives signals from two reference points at the construction site and calculates the horizontal coordinates of the support frame on the X and Y axes in real time. After comparing them with the design horizontal coordinates, if a horizontal offset is found (such as deviation from the working grid axis or trajectory misalignment), the offset data will be transmitted to the control unit. The control unit then drives the fine-tuning mechanism (hydraulic / electric push rod) to move in the horizontal direction to correct the horizontal position deviation. This ensures that the working trajectory of the support frame and the construction equipment (such as compaction rollers and paving mechanisms) is consistent with the design coordinates, fundamentally eliminating the cumulative positioning error in the horizontal direction.

[0053] The hydraulic lifting rod adjusts the elevation deviation, which is a collaborative function with the infrared positioning device to correct the horizontal deviation. The infrared positioning device solves the problem of horizontal position deviation, while the hydraulic lifting rod solves the problem of inaccurate vertical elevation. Together, they ensure the flatness and elevation accuracy of the foundation of ultra-long and ultra-wide factory buildings, and avoid the impact of single-dimensional deviation on construction quality.

[0054] S5: Data Export and Acceptance: After construction is completed, the control unit exports an elevation deviation distribution map and a construction quality report, and uses the report to guide subsequent floor construction or acceptance.

[0055] The following engineering example will further illustrate this lime-soil compaction method:

[0056] Project Overview

[0057] The construction of a lime-soil foundation for a logistics warehouse is underway. The construction area is 100m × 50m, with a design elevation of ±0.000m and an allowable deviation of ±5mm. The lime-soil has a moisture content of 15%-18% and a particle size distribution of sand (60%), silt (30%), and clay (10%).

[0058] S1: Device installation and positioning: Move the movable support frame (10m span) to the edge of the construction area using the wheels, ensuring it spans the lime-soil paving strip (8m wide), and check the firmness of each component connection; start the infrared positioning instruments at both ends and calibrate them with the two reference points, calibrating the positioning error to ±1mm.

[0059] Two specific details need to be noted to ensure accuracy:

[0060] First, complete the mechanical connection and signal link check of each component (such as infrared locator and movable support frame, reference point signal transmitter and reference control point, locator and control unit), and confirm that they are secure and there is no looseness and that the data transmission is uninterrupted before starting the infrared locator.

[0061] After the positioning device is started, the positioning error is corrected to within ±1mm by calibration with two reference points. This accuracy can meet the subsequent control requirements for the flatness of the foundation of ultra-long and ultra-wide factory buildings (≤3mm / 3m), laying the foundation for accurate positioning in subsequent compaction construction.

[0062] S2: Parameter preset: Input the design elevation of 0.000m and allowable deviation of ±5mm to the control unit via the touch screen, and set the initial rotation speed of the compaction roller to 1.5m / min.

[0063] S3: Start-up: Turn on the laser ranging module and the frequency conversion motor to control the movable support frame to move along the construction direction at a speed of 0.8m / min. The laser ranging module sends elevation data to the control unit every 0.8 seconds, and the infrared positioning device sends positioning data to the control unit every 1 second.

[0064] S4: Real-time control: When the infrared positioning device detects a support frame offset of +2mm, the control unit automatically corrects the movement direction and eliminates the offset; when the laser ranging module detects that the elevation of the soil in a certain area is +0.012m (deviation -3mm, exceeding the lower limit of allowable), the control unit drives the hydraulic lifting rod in that area to press down 10mm; when the elevation of a certain area is detected to be -0.006m (deviation +1mm, within the allowable range), the hydraulic lifting rod maintains the current height.

[0065] S5: Data Recording and Acceptance: After construction is completed, the control unit exports an elevation deviation distribution map, showing that 98% of the area deviation is within ±3mm, 2% of the area deviation is ≤±5mm, and there are no areas exceeding the tolerance; the exported construction quality report serves as the basis for foundation acceptance, and the elevation data from this report can be directly reused in subsequent floor construction.

[0066] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A loam compacting device, characterized in that The movable support frame, the elevation control mechanism, the compaction roller, the laser ranging module and the control unit are included. The movable support frame includes a truss structure and walking wheels fixed to the bottom of the truss structure. The elevation control mechanism is composed of multiple groups of independent hydraulic lifting rods, which are distributed equidistantly along the longitudinal direction of the movable support frame, and the upper end of the hydraulic lifting rod is connected with the movable support frame, and the lower end is connected with the compaction roller. The laser ranging module is fixedly installed on the movable support frame towards the surface of the ash soil for real-time detection of the elevation of the surface of the ash soil. The control unit is integrated inside the movable support frame and is in communication connection with the laser ranging module and the hydraulic lifting rod respectively, for receiving the elevation data output by the laser ranging module, calculating the deviation data of the elevation data from the set design elevation, and driving the hydraulic lifting rod to adjust the height according to the deviation data.

2. The lime-soil compacting device of claim 1, wherein, The compaction roller is detachably connected with the lower end of each group of hydraulic lifting rods.

3. The lime-soil compacting device of claim 1, wherein, The compaction roller is driven to rotate by a variable frequency motor.

4. The lime-soil compacting device of claim 3, wherein, The variable frequency motor is electrically connected with the control unit, and the control unit adjusts the output rotating speed of the variable frequency motor to realize stepless adjustment of the rotating speed of the compaction roller within the range of 0.5-3 m / min.

5. The lime-soil compacting device of claim 1, wherein, The outer surface of the compaction roller is provided with spiral ridges.

6. The lime-soil compacting device of claim 1, wherein, The control unit stores construction parameters, including design elevation value and elevation allowable deviation range; the control unit has data storage function for recording elevation deviation value, hydraulic lifting rod adjustment parameter and compaction track data during the whole construction process, and supports export of construction quality report.

7. The lime-soil compacting device of claim 6, wherein, The control unit supports data docking with external BIM system to upload the stored construction data to the BIM system.

8. The lime-soil compacting device of claim 1, wherein, The hydraulic lifting rod adopts a multi-stage telescopic structure, and the stroke adjustment range is 0-300 mm.

9. The lime-soil compacting device of claim 1, wherein, A fine adjustment mechanism is arranged on the movable support frame, and infrared positioners are arranged at both ends of the top of the movable support frame. Two infrared positioners are respectively linked with two reference points in the reference coordinate system of the construction site, and the infrared positioners are further connected with the fine adjustment mechanism through the control unit to eliminate the horizontal position deviation of the movable support frame during movement.

10. A method of lime-soil compaction based on the lime-soil compaction device according to any one of claims 1 to 9, characterized in that, The method comprises the following steps: S1: device installation and positioning: move the movable support frame to the ash soil paving area through the walking wheels, so that the movable support frame spans the construction area; if the infrared positioner is configured, calibrate and connect the infrared positioner with two reference points in the construction site; S2: parameter pre-setting: input construction parameters to the control unit, including design elevation value, elevation allowable deviation and initial rotating speed of the compaction roller; S3: start running: turn on the laser ranging module and the compaction roller, and move the movable support frame at a constant speed along the construction direction; the laser ranging module scans the elevation of the surface of the ash soil in real time, and sends deviation data to the control unit once every 0.5-1 seconds; S4: real-time regulation and control: the control unit calculates the deviation value of the current ash soil surface from the design elevation after receiving the deviation data; If the deviation value exceeds the allowable range and the surface of the lime-soil is higher than the design elevation, the hydraulic lifting rod of the corresponding area is driven to be pressed down to increase the compaction degree of the compaction roller in the area; If the deviation value exceeds the allowable range and the surface of the lime-soil is lower than the design elevation, the hydraulic lifting rod of the corresponding area is driven to be lifted up to reduce the compaction degree of the compaction roller in the area; S5: Data export and acceptance: after the construction is completed, the control unit exports the elevation deviation distribution map and the construction quality report, and guides the subsequent floor construction or acceptance based on the report.

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