A construction method for improving masonry quality and progress
By combining multi-beam ground-penetrating radar and Beidou positioning with an intelligent mortar paving vehicle and a pneumatic leveling device, the accuracy problem caused by environmental interference in masonry structure construction was solved, high-precision masonry construction was achieved, construction efficiency and structural stability were improved, and full-process quality traceability was provided.
Patent Information
- Application Number
- CN202510985798.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2045-07-17
AI Technical Summary
Existing masonry structure construction methods are easily affected by environmental interference and are difficult to meet high-precision engineering requirements, resulting in difficulty in ensuring the verticality and flatness of walls, affecting structural stability and aesthetics.
A multi-beam ground-penetrating radar is used to scan the foundation, and a Beidou positioning construction coordinate system is established. Combined with an intelligent mortar paving vehicle and a pneumatic leveling device, precise foundation reinforcement and block positioning correction are achieved. Microwave curing instruments and a BIM platform are used for real-time detection and data tracing to ensure construction quality.
It improves the accuracy and efficiency of masonry construction, enhances structural stability and durability, and ensures the traceability and reliability of construction quality.
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Figure CN120465711B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of masonry construction, in particular to a construction method for improving masonry quality and progress. Background Art
[0002] In road engineering and transportation facility construction, masonry structures are widely used in key locations such as foundations, walls, and retaining walls. Their stability, durability, and aesthetics directly affect the quality and service life of the project.
[0003] The existing masonry structure construction methods generally rely on manual operation for construction accuracy. Traditional laser marking or mechanical leveling methods are easily affected by environmental interference, resulting in large deviations in masonry positioning. The verticality and flatness of the wall are difficult to meet the requirements of high-precision engineering, which directly affects the structural stability and subsequent decoration process. Summary of the Invention
[0004] In response to the shortcomings of the existing technology, the present invention provides a construction method for improving the quality and progress of masonry, which solves the problem that traditional laser marking or mechanical leveling methods are easily affected by environmental interference and are difficult to meet high-precision engineering requirements.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A construction method for improving masonry quality and progress, comprising the following steps:
[0006] Step 1: Foundation pretreatment: Use multi-beam ground penetrating radar to scan the construction area, mark foundation cavities and reinforce them with grouting, and establish a Beidou positioning construction coordinate system;
[0007] Step 2: Intelligent slurry laying: Trapezoidal cross-section mortar belts are laid using a mobile slurry laying vehicle equipped with an integrated electromagnetic vibration module, while simultaneously implementing vibration compaction at a frequency of 20-50 Hz.
[0008] Step 3: Masonry installation correction: Use a pneumatic leveling device to perform three-way positioning correction on the prefabricated blocks, applying a preload of 0.1-0.3 MPa for 5-15 seconds;
[0009] Step 4: Fullness enhancement treatment: Use a 2.45GHz microwave curing device to move along the mortar joints to heat, triggering secondary leveling of the mortar and performing real-time fullness detection;
[0010] Step 5: Quality traceability management: Integrate construction data based on the BIM platform and generate quality labels bound to time and space coordinates.
[0011] Preferably, in step 2, the mobile slurry spreading vehicle includes a double-screw extrusion module, a piezoelectric ceramic vibration module, an online monitoring system, a magnetic suspension guide rail system, an intelligent control module and a data interaction interface:
[0012] The twin-screw extruder has a screw diameter of 80-120 mm, a screw pitch of 50-80 mm, and a speed that is continuously adjustable at 30-60 rpm controlled by a servo motor.
[0013] The piezoelectric ceramic vibration module includes multiple groups of annularly distributed PZT-5H piezoelectric vibrators, with an adjustable operating frequency of 20-50Hz, an amplitude control accuracy of ±0.05mm, and a frequency response error of ≤1%;
[0014] The online monitoring system integrates an infrared thickness gauge and a CCD visual sensor to obtain the geometric parameters of the mortar strip cross section in real time;
[0015] The magnetic levitation guide rail system adopts Halbach array permanent magnet guide rail and linear motor drive, with positioning repeatability accuracy of ±0.5mm and maximum travel speed of 2m / min;
[0016] The intelligent control module is equipped with an industrial PLC and an embedded real-time operating system, and has a built-in PID control algorithm for slurry thickness:
[0017]
[0018] in, is the speed correction value of the screw extrusion mechanism, Q is the speed correction value of the screw extrusion mechanism, =0.8-1.2, =0.05-0.15, =0.3-0.5, is the real-time thickness deviation, is the cumulative historical error, is the error change rate;
[0019] The data interaction interface supports real-time transmission of construction data between the 5G communication module and the BIM system.
[0020] Preferably, in step 4, the microwave curing instrument has a frequency of 2.45±0.05GHz and a radiation power density of 50-80W / cm 2 , moving speed 10-30cm / min, surface temperature control range 40-60℃.
[0021] Preferably, the mortar contains nano-silica aerogel, the addition amount of which is 0.5-1.2wt% of the total weight of the mortar, the aerogel particle size distribution is 50-200nm, and the specific surface area is ≥600m 2 / g.
[0022] Preferably, in the step one, in the foundation pretreatment, a multi-beam ground penetrating radar with a center frequency of 1.5 GHz is used to implement grid scanning, with a grid density of ≤20 cm×20 cm, and quick-setting cement slurry with a water-cement ratio of 0.4-0.6 is injected into the void area, with a grouting pressure of 0.5-1.0 MPa, and the Beidou positioning reference station is set at a spacing of ≤500 m, with a plane positioning accuracy of ±2 mm and an elevation accuracy of ±3 mm.
[0023] Preferably, in step three, the pneumatic leveling device includes:
[0024] Three-axis tilt sensor, measurement accuracy ±0.1°;
[0025] Micro cylinder actuator, output force 50-200N adjustable;
[0026] Adaptive clamp, clamping force 0.3-0.8MPa;
[0027] Displacement feedback system, resolution 0.01mm.
[0028] Preferably, in the step five, in the quality traceability management, the construction timestamp, vibration frequency value, and mortar thickness data are embedded in the BIM model, a QR code label containing a SHA-256 encryption verification code is generated, and a random forest regression model of mortar joint fullness and vibration parameters is established, and the model input dimension is ≥8 dimensions.
[0029] Preferably, in step 4, the fullness detection adopts a micro ground penetrating radar array and a piezoelectric sensor to implement three-dimensional imaging detection of the mortar seam, with an operating frequency of 1GHz±10%, an antenna spacing of 5-8cm, a piezoelectric sensor implantation density of 3-5 per linear meter, and a three-dimensional imaging algorithm spatial resolution of ≤1mm. 3 .
[0030] Preferably, in the step 2, in the intelligent slurry spreading operation, the matching relationship between the vibration frequency and the slurry spreading speed includes the following stages:
[0031] When the slurry spreading speed is ≤0.5m / min, the vibration frequency is 20-30Hz;
[0032] When the slurry spreading speed is 0.5-1.0m / min, the vibration frequency is 30-40Hz;
[0033] When the slurry spreading speed is ≥1.0m / min, the vibration frequency is 40-50Hz;
[0034] The relationship is obtained by rheological model Determine, among them, is the mortar consistency coefficient, is the slurry spreading speed, is the vibration frequency, is the dynamic viscosity of mortar.
[0035] Preferably, in step two, after the intelligent grouting operation is completed, the laid mortar belt is inspected for internal defects using a defect detector based on ultrasonic detection technology. The defect detector has an operating frequency of 20-50kHz and can detect internal voids or loose areas with a diameter ≥ 2mm, and feeds back the detection data to the intelligent control module in real time to adjust and optimize the subsequent grouting operation parameters.
[0036] The present invention provides a construction method for improving masonry quality and progress. It has the following beneficial effects:
[0037] 1. This invention uses multi-beam ground-penetrating radar grid scanning to accurately locate foundation cavities, and combines it with the Beidou positioning system to establish a construction coordinate system, achieving precise foundation grouting reinforcement. The pneumatic leveling device uses a three-axis tilt sensor and a displacement feedback system to perform three-dimensional positioning correction on prefabricated blocks. Combined with a 0.1-0.3MPa preload, it ensures the flatness and verticality of the masonry installation, reducing construction errors at the source and improving structural stability.
[0038] 2. The mobile mortar spreading vehicle of the present invention integrates a double-screw extrusion mechanism and a piezoelectric ceramic vibrator. It intelligently matches the vibration frequency and the mortar spreading speed through a rheological model to achieve continuous spreading and compaction of the mortar. The single mortar spreading length is ≥8m, and the daily construction progress is ≥100 linear meters. The automated operation of the pneumatic leveling device and the adaptive clamp greatly reduces the manual calibration time, forms an assembly line construction, significantly improves the working efficiency and reduces the labor intensity.
[0039] 3. The present invention adds nano-silica aerogel to the mortar to enhance its adhesion and crack resistance due to its high specific surface area. A 2.45GHz microwave curing device is used to trigger secondary leveling of the mortar. A micro-ground-penetrating radar array is used to detect the fullness of mortar joints, ensuring a fullness of 95% or higher. Full-process data traceability based on the BIM platform integrates construction timestamps and vibration parameter information and generates encrypted quality labels to accurately trace quality issues. A random forest model is used to analyze the relationship between construction parameters and quality, providing data support for subsequent projects and comprehensively ensuring the durability and reliability of masonry structures. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] Figure 1 The present invention is a flow chart of a construction method for improving masonry quality and progress. DETAILED DESCRIPTION
[0041] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0042] Please see the attached Figure 1 The embodiment of the present invention provides a construction method for improving masonry quality and progress, comprising the following steps:
[0043] Step 1: Foundation pretreatment: Use multi-beam ground penetrating radar to scan the construction area, mark foundation cavities and reinforce them with grouting, and establish a Beidou positioning construction coordinate system;
[0044] Multi-beam ground-penetrating radar uses the differences in the propagation characteristics of electromagnetic waves in different media. When encountering an abnormal area of cavity, the reflected wave signal will change, thereby identifying the location of the cavity. During grouting, the quick-setting cement slurry fills the cavity under pressure, forming a whole with the surrounding soil, and enhancing the strength of the foundation. Beidou positioning receives satellite signals and uses the principle of triangulation to determine the precise coordinates of the construction area. Multi-beam ground-penetrating radar scanning can fully detect the underground conditions of the construction area, mark the cavity to provide precise location for grouting, grouting reinforcement fills the cavity, and improves the bearing capacity of the foundation. The Beidou positioning construction coordinate system provides a precise spatial positioning benchmark for subsequent construction, ensures the accuracy of the construction position, identifies foundation cavities and effectively reinforces them, provides a stable foundation for subsequent masonry construction, ensures the overall stability of the building, and reduces the quality risks of masonry cracking and deformation caused by foundation problems.
[0045] Step 2: Intelligent slurry laying: Trapezoidal cross-section mortar belts are laid using a mobile slurry laying vehicle equipped with an integrated electromagnetic vibration module, while simultaneously implementing vibration compaction at a frequency of 20-50 Hz.
[0046] The various modules of the mobile mortar spreading vehicle work together. The double-screw extrusion module stably extrudes mortar, the piezoelectric ceramic vibration module vibrates and compacts the mortar during laying, the online monitoring system monitors the status of the mortar belt in real time, the magnetic levitation guide rail system ensures the movement accuracy of the mortar spreading vehicle, the intelligent control module adjusts the mortar spreading parameters based on the monitoring data, the data interaction interface realizes real-time data transmission, the vibration frequency matches the mortar spreading speed, ensuring that the mortar is well compacted at different speeds, and the ultrasonic defect detector promptly detects internal defects in the mortar belt.
[0047] The double-screw extrusion module uses spiral rotation to push the mortar and controls the extrusion volume by adjusting the speed. The piezoelectric ceramic vibration module is based on the piezoelectric effect. Under the action of the electric field, the PZT-5H piezoelectric vibrator generates vibrations and transmits them to the mortar. The infrared thickness gauge in the online monitoring system uses infrared light reflection to measure the thickness. The CCD visual sensor obtains image information and analyzes the cross-sectional geometry. The magnetic levitation guide rail system uses the Halbach array permanent magnet guide rail to generate a strong magnetic field and the linear motor electromagnetic force to achieve high-precision movement. The intelligent control module uses the PID control algorithm to adjust the speed of the spiral extrusion mechanism according to the real-time thickness deviation. The rheological model reflects the relationship between vibration frequency and slurry laying speed based on the rheological properties of the mortar. The ultrasonic detection technology uses the reflection, refraction and attenuation changes caused by ultrasonic waves when propagating in different media and encountering voids or loose areas to detect internal defects.
[0048] The mortar is laid evenly and densely, which improves the bonding between the masonry and the mortar, ensures the integrity and stability of the masonry, and optimizes the mortar laying speed and efficiency.
[0049] Step 3: Masonry installation correction: Use a pneumatic leveling device to perform three-way positioning correction on the prefabricated blocks, applying a preload of 0.1-0.3 MPa for 5-15 seconds;
[0050] The three-axis inclination sensor monitors the inclination angle of the blocks in real time. The micro-cylinder actuator adjusts the position of the blocks according to the sensor data. The adaptive fixture firmly clamps the blocks. The displacement feedback system accurately feedbacks the position adjustment amount. The pre-pressure ensures a better fit between the blocks and the mortar.
[0051] The three-axis inclination sensor measures the tilt angle based on the principle of gravitational acceleration, the micro-cylinder actuator uses compressed air to generate thrust, the adaptive clamp adjusts the clamping force through mechanical structure or pressure sensing, and the displacement feedback system mostly uses the grating scale principle to measure displacement, ensuring the precise positioning and installation of prefabricated blocks, making the masonry structure dimensionally accurate, improving the overall flatness and verticality of the masonry, and enhancing the stability and bearing capacity of the masonry.
[0052] Step 4: Fullness enhancement treatment: Use a 2.45GHz microwave curing device to move along the mortar joints to heat, triggering secondary leveling of the mortar and performing real-time fullness detection;
[0053] The microwave curing device heats the mortar to achieve secondary leveling and fill gaps; a micro ground-penetrating radar array is combined with a piezoelectric sensor to detect the fullness of the mortar joints in real time, providing data support for construction quality control. The microwave curing device uses 2.45GHz microwaves to interact with the polar molecules in the mortar, causing molecular vibrations to generate heat. The mortar temperature rises, enhancing its fluidity and achieving secondary leveling. The micro ground-penetrating radar array transmits and receives electromagnetic waves, and analyzes the internal structure of the mortar joints based on the characteristics of the reflected waves. The piezoelectric sensor generates an electrical signal when the mortar joint is deformed under stress, assisting in judging the fullness. The three-dimensional imaging algorithm reconstructs a three-dimensional image of the mortar joint based on the signal data.
[0054] Improve the fullness of mortar joints, enhance the connection strength between masonry, prevent moisture penetration, and improve the impermeability and durability of masonry.
[0055] Step 5: Quality traceability management: Integrate construction data based on the BIM platform and generate quality labels bound to time and space coordinates.
[0056] Key construction data is embedded in the BIM model, and QR code tags with encrypted verification codes are generated to facilitate quick acquisition and verification of quality information. The random forest regression model analyzes the relationship between mortar joint fullness and vibration parameters to predict and control quality. The BIM platform integrates construction data using a three-dimensional model. The SHA-256 encryption verification code ensures data integrity and security. The random forest regression model learns and predicts input data through multiple decision trees to explore the complex relationship between mortar joint fullness and vibration parameters.
[0057] The quality information of the entire construction process can be traced, which facilitates the timely discovery and resolution of quality problems and provides detailed and accurate data for project quality assessment and subsequent maintenance.
[0058] In step 2, the mobile slurry laying vehicle includes a double-screw extrusion module, a piezoelectric ceramic vibration module, an online monitoring system, a magnetic levitation guide rail system, an intelligent control module, and a data interaction interface:
[0059] Double screw extrusion mechanism, with screw diameter Φ80-120mm, pitch 50-80mm, and speed continuously adjustable at 30-60rpm controlled by servo motor;
[0060] The piezoelectric ceramic vibration module contains multiple groups of annularly distributed PZT-5H piezoelectric vibrators, with an adjustable operating frequency of 20-50Hz, an amplitude control accuracy of ±0.05mm, and a frequency response error of ≤1%;
[0061] Online monitoring system, integrating infrared thickness gauge and CCD visual sensor, to obtain mortar strip cross-sectional geometric parameters in real time;
[0062] The magnetic levitation guide rail system uses a Halbach array permanent magnet guide rail and a linear motor drive, with a positioning repeatability accuracy of ±0.5mm and a maximum travel speed of 2m / min;
[0063] Intelligent control module, equipped with industrial PLC and embedded real-time operating system, built-in slurry thickness PID control algorithm:
[0064]
[0065] in, is the speed correction value of the screw extrusion mechanism, Q is the speed correction value of the screw extrusion mechanism, =0.8-1.2, =0.05-0.15, =0.3-0.5, is the real-time thickness deviation, is the cumulative historical error, is the error change rate;
[0066] The data interaction interface supports real-time transmission of construction data between the 5G communication module and the BIM system.
[0067] The mortar contains nano-silica aerogel, the addition amount of which is 0.5-1.2wt% of the total weight of the mortar, the aerogel particle size distribution is 50-200nm, and the specific surface area is ≥600m2 / g.
[0068] Nano-scale particle size and high specific surface area enable it to be evenly dispersed in the mortar, filling pores and enhancing the bonding force between particles. Nano-silica aerogel has high surface activity and reacts with cement hydration products to produce more gel substances, improving the mortar microstructure, improving mortar performance, and increasing strength, impermeability and durability.
[0069] Step 1: foundation pretreatment;
[0070] The 1.5GHz center frequency and ≤20cm×20cm grid density ensure scanning accuracy. When electromagnetic waves of this frequency propagate underground, the reflection characteristics of the interface of the cavity are changed. By analyzing the reflected waves, the cavity is located, the foundation is scanned with high resolution, and tiny cavities are accurately identified.
[0071] Quick-setting cement slurry with a water-cement ratio of 0.4-0.6 is injected into the cavity under a pressure of 0.5-1.0 MPa. The appropriate water-cement ratio ensures the fluidity and solidification characteristics of the cement slurry. The pressure enables the cement slurry to fully fill the cavity and combine with the surrounding soil, effectively filling the cavity and improving the foundation strength and stability.
[0072] Beidou positioning base stations are set up at intervals of ≤500m to achieve ±2mm plane positioning accuracy and ±3mm elevation accuracy. The base stations receive satellite signals and send correction information, which allows construction equipment to accurately calculate its own position, providing high-precision positioning services to ensure accurate construction positions.
[0073] In step three, the pneumatic leveling device includes:
[0074] The three-axis inclination sensor has a measurement accuracy of ±0.1°. The ±0.1° measurement accuracy ensures the accuracy of angle measurement. Based on the principle of gravity acceleration, the sensitive element senses the change in the direction of gravity and converts it into an electrical signal to measure the angle. It accurately measures the tilt angle of prefabricated blocks and provides a basis for position adjustment.
[0075] The micro cylinder actuator has an adjustable output force of 50-200N to meet the adjustment requirements of different blocks. The compressed air enters the cylinder to push the piston to generate thrust to adjust the block position. The prefabricated block position can be adjusted quickly and accurately.
[0076] Adaptive clamp, clamping force 0.3-0.8MPa, 0.3-0.8MPa clamping force ensures that the blocks do not slip and are not damaged. The clamping force is automatically adjusted through the mechanical structure or pressure sensing device to firmly clamp the prefabricated blocks and ensure the stability of the blocks during the adjustment process;
[0077] The displacement feedback system has a resolution of 0.01mm. The 0.01mm resolution ensures the displacement measurement accuracy. It mostly uses grating scale optics or electromagnetic induction principles to measure displacement and convert it into electrical signal feedback to achieve precise control.
[0078] Step 5: In quality traceability management, the construction timestamp, vibration frequency value, and mortar thickness data are embedded in the BIM model, a QR code label containing a SHA-256 encryption verification code is generated, and a random forest regression model of mortar joint fullness and vibration parameters is established. The model input dimension is ≥8 dimensions.
[0079] The construction timestamp records the construction sequence, the vibration frequency value and mortar thickness data reflect the construction parameters, and are used to analyze factors affecting quality. The BIM model uses three-dimensional space as a carrier to associate various types of data with model elements for storage, comprehensively record key construction information, and provide detailed data for quality traceability.
[0080] Scanning the QR code can verify the data and obtain the corresponding construction information. The SHA-256 algorithm encrypts the data to generate a unique check code, which is used to verify whether the data has been tampered with. It is convenient and quick to obtain construction quality information and ensure the authenticity and integrity of the data.
[0081] The random forest is composed of multiple decision trees, which train and predict the input data. The model generalization ability is improved through ensemble learning. The input dimension ≥ 8 dimensions ensures that the model fully considers multiple influencing factors, improves prediction accuracy, explores the complex relationship between mortar joint fullness and vibration parameters, and predicts and controls quality.
[0082] In step 4, the fullness detection uses a miniature ground-penetrating radar array and a piezoelectric sensor to implement three-dimensional imaging detection of mortar joints. The operating frequency of 1GHz±10% and the antenna spacing of 5-8cm ensure the detection accuracy and range. The electromagnetic waves are transmitted to penetrate the mortar joints. When encountering an unfull area, the reflection wave characteristics change. The reflected waves are received to analyze the internal structure, effectively detecting the internal structure of the mortar joints and identifying unfull areas. The implantation density of piezoelectric sensors is 3-5 per linear meter. The stress deformation of the mortar joints is sensed to generate electrical signals. The piezoelectric material generates an electric charge when it is stressed. The stress state of the mortar joints is reflected by detecting the change in charge, which assists in detecting the fullness of the mortar joints and provides more comprehensive data. The spatial resolution of the three-dimensional imaging algorithm is ≤1mm3 to ensure imaging accuracy, accurately identify tiny unfull areas, and intuitively present the three-dimensional structure inside the mortar joints, facilitating the analysis of fullness.
[0083] Step 2: In the intelligent grouting operation, the matching relationship between vibration frequency and grouting speed includes the following stages:
[0084] When the slurry spreading speed is ≤0.5m / min, the vibration frequency is 20-30Hz;
[0085] When the slurry spreading speed is 0.5-1.0m / min, the vibration frequency is 30-40Hz;
[0086] When the slurry spreading speed is ≥1.0m / min, the vibration frequency is 40-50Hz;
[0087] Relationship through rheological model Determine, among them, is the mortar consistency coefficient, is the slurry spreading speed, is the vibration frequency, is the dynamic viscosity of mortar.
[0088] Step 2: After the intelligent grouting operation is completed, the laid mortar belt is inspected for internal defects using a defect detector based on ultrasonic detection technology. The defect detector has an operating frequency of 20-50kHz and can detect internal voids or loose areas with a diameter of ≥2mm. The detection data is fed back to the intelligent control module in real time to adjust and optimize the subsequent grouting operation parameters.
[0089] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A construction method for improving masonry quality and progress, characterized in that: The following steps are involved: Step 1: Foundation pretreatment: Use multi-beam ground penetrating radar to scan the construction area, mark foundation cavities and reinforce them with grouting, and establish a Beidou positioning construction coordinate system; Step 2: Intelligent slurry laying: Trapezoidal cross-section mortar belts are laid using a mobile slurry laying vehicle equipped with an integrated electromagnetic vibration module, while simultaneously implementing vibration compaction at a frequency of 20-50 Hz. Step 3: Masonry installation correction: Use a pneumatic leveling device to perform three-way positioning correction on the prefabricated blocks, applying a preload of 0.1-0.3 MPa for 5-15 seconds; Step 4: Fullness enhancement treatment: Use a 2.45GHz microwave curing device to move along the mortar joints to heat, triggering secondary leveling of the mortar and performing real-time fullness detection; Step 5: Quality traceability management: Integrate construction data based on the BIM platform and generate quality labels bound to time and space coordinates; In step 2, the mobile slurry spreading vehicle includes a double-screw extrusion module, a piezoelectric ceramic vibration module, an online monitoring system, a magnetic suspension guide rail system, an intelligent control module, and a data interaction interface: The twin-screw extrusion module has a screw diameter of 80-120 mm, a screw pitch of 50-80 mm, and a speed that is continuously adjustable at 30-60 rpm controlled by a servo motor; The piezoelectric ceramic vibration module includes multiple groups of annularly distributed PZT-5H piezoelectric vibrators, with an adjustable operating frequency of 20-50Hz, an amplitude control accuracy of ±0.05mm, and a frequency response error of ≤1%; The online monitoring system integrates an infrared thickness gauge and a CCD visual sensor to obtain the geometric parameters of the mortar strip cross section in real time; The magnetic levitation guide rail system adopts Halbach array permanent magnet guide rail and linear motor drive, with positioning repeatability accuracy of ±0.5mm and maximum travel speed of 2m / min; The intelligent control module is equipped with an industrial PLC and an embedded real-time operating system, and has a built-in PID control algorithm for slurry thickness: ; in, is the speed correction value of the screw extrusion mechanism, =0.8-1.2, =0.05-0.15, =0.3-0.5, is the real-time thickness deviation, is the cumulative historical error, is the error change rate; The data interaction interface supports real-time transmission of construction data between the 5G communication module and the BIM system.
2. A construction method for improving masonry quality and progress according to claim 1, characterized in that: In step 4, the microwave curing instrument has a frequency of 2.45±0.05GHz and a radiation power density of 50-80W / cm 2 , moving speed 10-30cm / min, surface temperature control range 40-60℃.
3. A construction method for improving masonry quality and progress according to claim 1, characterized in that: The mortar contains nano-silica aerogel, the addition amount of which is 0.5-1.2wt% of the total weight of the mortar, the nano-silica aerogel particle size distribution is 50-200nm, and the specific surface area is ≥600m 2 / g.
4. A construction method for improving masonry quality and progress according to claim 1, characterized in that: In the step 1, during the foundation pretreatment, a multi-beam ground penetrating radar with a center frequency of 1.5 GHz is used to implement grid scanning with a grid density of ≤20 cm×20 cm. Quick-setting cement slurry with a water-cement ratio of 0.4-0.6 is injected into the cavity area with a grouting pressure of 0.5-1.0 MPa. The Beidou positioning reference stations are set at a spacing of ≤500 m, with a plane positioning accuracy of ±2 mm and an elevation accuracy of ±3 mm.
5. A construction method for improving masonry quality and progress according to claim 1, characterized in that: In step three, the pneumatic leveling device includes: Three-axis tilt sensor, measurement accuracy ±0.1°; Micro cylinder actuator, output force 50-200N adjustable; Adaptive clamp, clamping force 0.3-0.8MPa; Displacement feedback system, resolution 0.01mm.
6. A construction method for improving masonry quality and progress according to claim 1, characterized in that: In the step five, in the quality traceability management, the construction timestamp, vibration frequency value, and mortar thickness data are embedded in the BIM model, a QR code label containing a SHA-256 encryption verification code is generated, and a random forest regression model of mortar joint fullness and vibration parameters is established, with the model input dimension ≥ 8 dimensions.
7. A construction method for improving masonry quality and progress according to claim 1, characterized in that: In step 4, the fullness detection uses a micro ground penetrating radar array and a piezoelectric sensor to perform three-dimensional imaging detection of the mortar joints, with an operating frequency of 1GHz±10%, an antenna spacing of 5-8cm, a piezoelectric sensor implantation density of 3-5 per linear meter, and a three-dimensional imaging algorithm spatial resolution of ≤1mm. 3 .
8. The construction method for improving masonry quality and progress according to claim 1, characterized in that: In the second step, the matching relationship between the vibration frequency and the slurry spreading speed in the intelligent slurry spreading operation includes the following stages: When the slurry spreading speed is ≤0.5m / min, the vibration frequency is 20-30Hz; When the slurry spreading speed is 0.5-1.0m / min, the vibration frequency is 30-40Hz; When the slurry spreading speed is ≥1.0m / min, the vibration frequency is 40-50Hz; The relationship is obtained by rheological model Determine, among them, is the mortar consistency coefficient, is the slurry spreading speed, is the vibration frequency, is the dynamic viscosity of mortar.
9. A construction method for improving masonry quality and progress according to claim 1, characterized in that: In step 2, after the intelligent grouting operation is completed, the laid mortar belt is inspected for internal defects using a defect detector based on ultrasonic detection technology. The defect detector has an operating frequency of 20-50kHz and can detect internal voids or loose areas with a diameter of ≥2mm. The detection data is fed back to the intelligent control module in real time to adjust and optimize the subsequent grouting operation parameters.
Citation Information
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