CN-120026540-B - Road surface on-site cold regeneration construction method and system based on PFWD detection

CN120026540BCN 120026540 BCN120026540 BCN 120026540BCN-120026540-B

Abstract

The invention discloses a pavement on-site cold regeneration construction method and system based on PFWD detection, which belong to the technical field of electric digital data processing, and comprise the following steps of detecting the pavement state of a pavement to be constructed through the PFWD to obtain a comprehensive pavement state evaluation value, obtaining the pavement paving initial speed by matching, and executing on-site cold regeneration construction; the method comprises the steps of obtaining a demulsification trend index, obtaining real-time detection parameters of a pavement pre-paving height and each real-time detection point, obtaining a pavement paving difficulty index through analysis, obtaining a real-time reference paving speed of a construction material through comprehensive analysis based on the demulsification trend index and the pavement paving difficulty index, obtaining a real-time paving speed of the construction material, analyzing the real-time paving speed of the construction material and the real-time reference paving speed of the construction material, obtaining a real-time spraying speed of the construction material, adjusting the real-time spraying equipment and the real-time spraying speed, and solving the problem that the paving speed of the construction material is not timely in the prior art.

Inventors

CHEN CHANGYOU
Dou Jiancheng
MA HUAN
LI JUN
WANG CHENG
ZHANG YONGFENG
HE XIANGWEI
HE SHUTING

Assignees

黑龙江农垦建工路桥有限公司

Dates

Publication Date: 20260512
Application Date: 20250410

Claims (10)

1. The pavement on-site cold recycling construction method based on PFWD detection is characterized by comprising the following steps of: S1, after a construction equipment control center receives a pavement detection signal, detecting the pavement state of a pavement to be constructed through a PFWD (pulse frequency device) to obtain a comprehensive pavement state evaluation value, obtaining the pavement paving initial speed in a matching way, and executing in-situ cold recycling construction; s2, acquiring environmental parameters and construction material parameters, analyzing to obtain demulsification trend indexes, acquiring the pavement pre-paving height and real-time detection parameters of each real-time detection point, and analyzing to obtain pavement paving difficulty indexes; S3, comprehensively analyzing to obtain the real-time reference paving speed of the construction material based on the demulsification trend index and the pavement paving difficulty index; s4, acquiring the real-time paving speed of the construction material, analyzing the real-time paving speed and the real-time reference paving speed of the construction material to obtain the real-time spraying speed of the construction material, and adjusting the real-time spraying equipment and the real-time spraying speed.
2. The method for cold recycling construction of pavement based on PFWD detection of claim 1, wherein the method comprises the following steps of: Dividing a pavement to be constructed into a plurality of subareas, arranging detection points at the geometric center points of the subareas, and marking the detection points as detection points; Detecting the pavement state of the pavement to be constructed through the PFWD to obtain the deflection value, the pavement thickness and the roadbed modulus of each detection point; obtaining a detection reference set preset in a database, wherein the detection reference set comprises a deflection reference value, a pavement thickness reference value and a roadbed modulus reference value; performing differential evaluation on the basis of the deflection value, the pavement thickness and the roadbed modulus of each detection point and a detection reference set to obtain a comprehensive pavement state evaluation value; The comprehensive evaluation value of the road surface state is obtained by carrying out differential degree evaluation on the deflection value, the road surface thickness and the roadbed modulus of each detection point and the deflection value average level, the road surface thickness average level and the roadbed modulus average level of the detection point respectively, introducing corresponding influence coefficients and then coupling.
3. The pavement cold-in-place recycling construction method based on PFWD detection of claim 1, wherein the matching obtains pavement paving initial speed, and the specific steps comprise: And obtaining preset road surface state comprehensive evaluation value intervals and road surface paving reference speeds corresponding to the road surface state comprehensive evaluation value intervals in the database, comparing the road surface paving reference speeds with the road surface state comprehensive evaluation values, and obtaining the road surface paving reference speeds corresponding to the intervals as road surface paving initial speeds if the road surface state comprehensive evaluation values are in a certain preset road surface state comprehensive evaluation value interval.
4. The pavement cold recycling construction method based on PFWD detection of claim 1, wherein the obtaining environmental parameters and construction material parameters, analyzing and obtaining demulsification trend index comprises the following specific steps: Acquiring environmental parameters and construction material parameters; the environment parameters comprise construction environment temperature and construction environment humidity; The construction material parameters comprise emulsified asphalt temperature, retarded cement humidity, composite mineral powder density and RAP material concentration; Acquiring an environmental parameter reference set preset in a database, wherein the environmental parameter reference set comprises a construction environment reference temperature and a construction environment reference humidity; performing difference degree analysis based on the environmental parameters and the environmental parameter reference set to obtain environmental change influence factors; Obtaining a demulsification trend reference set preset in a database, wherein the demulsification trend reference set comprises an emulsified asphalt reference temperature, a retarded cement reference humidity, a composite mineral powder density reference value and an RAP material concentration reference value; Performing differential evaluation based on construction material parameters and demulsification trend reference sets, and combining environmental change influence factors to obtain demulsification trend indexes; The demulsification trend index is used for carrying out differential analysis on the emulsified asphalt temperature, the retarded cement humidity, the composite mineral powder density and the RAP material concentration, the emulsified asphalt reference temperature, the retarded cement reference humidity, the composite mineral powder density reference value and the RAP material concentration reference value, combining environmental change influence factors and introducing influence coefficients to couple so as to obtain the demulsification trend index.
5. The method for on-site cold recycling construction of pavement based on PFWD detection of claim 1, wherein the real-time detection parameters of the pavement pre-paving height and each real-time detection point are obtained, and pavement paving difficulty indexes are obtained through analysis, and the specific steps comprise: acquiring detection points of a construction block where the real-time position of construction equipment is located, and marking the detection points as real-time detection points; acquiring the pavement pre-paving height and real-time detection parameters of each real-time detection point, wherein the real-time detection parameters of each real-time detection point comprise deflection values and roadbed modulus of each real-time detection point; Obtaining a preset paving height reference value in a database, analyzing the degree of difference between the paving height reference value and the paving preset paving height, and combining real-time detection parameters of each real-time detection point to obtain a paving difficulty index; The road surface paving difficulty index is obtained by analyzing the degree of difference between a paving height reference value and a road surface pre-paving height, combining the degree of difference between real-time detection parameters of each real-time detection point and the real-time detection average level of the real-time detection point, introducing an influence factor, and then performing coupling treatment.
6. The method for constructing the pavement on-site cold regeneration based on the PFWD detection of claim 1, wherein the real-time reference paving speed of the construction material is obtained by comprehensive analysis based on the demulsification trend index and the pavement paving difficulty index, and the method comprises the following specific steps: Obtaining a preset demulsification trend index threshold value in a database, comparing the demulsification trend index threshold value with the demulsification trend index, obtaining a pavement paving difficulty threshold value, and comparing the pavement paving difficulty threshold value with a pavement paving difficulty index, thereby obtaining a paving speed adjustment judging result; The paving speed adjustment judging result comprises a paving speed first adjustment result, a paving speed second adjustment result and a paving speed third adjustment result; based on the analysis of the paving speed adjustment judgment result, obtaining the real-time reference paving speed of the construction material; if the demulsification trend index is above the demulsification trend index threshold and the pavement paving difficulty index is smaller than the pavement paving difficulty threshold, the paving speed adjustment judging result is a first paving speed adjustment result; If the demulsification trend index is smaller than the demulsification trend index threshold and the pavement paving difficulty index is above the pavement paving difficulty threshold, the paving speed adjustment judging result is a second paving speed adjustment result; otherwise, the paving speed adjustment judging result is a third adjusting result of the paving speed.
7. The method for cold recycling construction of pavement on site based on PFWD detection of claim 6, wherein the real-time reference paving speed of construction materials is obtained based on the analysis of paving speed adjustment judgment result, and the method comprises the following steps: based on the demulsification trend index and the pavement paving difficulty index, and the demulsification trend index threshold and the pavement paving difficulty threshold, performing coupling analysis to obtain a paving adjustment coefficient; Judging based on the paving speed adjustment judging result, if the paving speed adjustment judging result is a paving speed first adjusting result, upward adjusting the pavement paving initial speed based on the paving adjusting coefficient to obtain a first reference paving speed; if the paving speed adjustment judging result is a second paving speed adjustment result, the paving initial speed of the pavement is adjusted downwards based on the paving adjustment coefficient, and a second reference paving speed is obtained; If the paving speed adjustment judging result is a third adjusting result of the paving speed, comparing the demulsification trend index and the pavement paving difficulty index with the demulsification trend index threshold and the pavement paving difficulty threshold to obtain an adjustment direction judging result, judging based on the adjustment direction judging result, if the adjustment direction judging result is upward adjustment, obtaining a third reference paving speed, and if the adjustment direction judging result is downward adjustment, obtaining a fourth reference paving speed; Jointly marking the first, second, third, and fourth reference paving speeds as reference paving speeds; and carrying out proportional analysis based on the pavement paving initial speed and the reference paving speed to obtain the real-time reference paving speed of the construction material.
8. The method for cold recycling construction of pavement on site based on PFWD detection of claim 1, wherein the steps of obtaining real-time paving speed of construction material and analyzing with real-time reference paving speed of construction material to obtain real-time spraying speed of construction material comprise: acquiring the real-time paving speed of the construction material, and performing differential comparison with the real-time reference paving speed of the construction material to obtain a paving speed adjustment difference value; Acquiring a preset paving speed adjustment threshold value in a database, comparing the paving speed adjustment threshold value with a paving speed adjustment difference value to obtain a real-time spraying adjustment judging result, if the paving speed adjustment difference value is larger than the paving speed adjustment threshold value, executing real-time spraying speed adjustment, and if the paving speed adjustment difference value is smaller than the paving speed adjustment threshold value, executing no real-time spraying speed adjustment; and if the real-time spraying speed adjustment is executed as the real-time spraying speed adjustment judgment result, carrying out difference degree analysis based on the paving speed adjustment difference value to obtain the real-time spraying speed of the construction material.
9. The method for cold recycling construction of pavement on site based on PFWD detection of claim 8, wherein the difference degree analysis is performed based on the paving speed adjustment difference value to obtain the real-time spraying speed of the construction material, and the method comprises the following steps: Acquiring a preset reference proportion threshold value in a database and the current spraying speed of the construction material; Comparing the difference degree of the paving speed adjustment difference value with a reference proportion threshold value, and mapping the paving speed adjustment difference value with a database to obtain a spraying adjustment proportion value; Based on the real-time paving speed of the construction material and compared with the real-time reference paving speed of the construction material, if the real-time paving speed of the construction material is above the real-time reference paving speed of the construction material, the current spraying speed of the construction material is adjusted downwards based on the spraying adjustment proportion value to obtain the real-time spraying speed of the construction material, and if the real-time paving speed of the construction material is smaller than the real-time reference paving speed of the construction material, the current spraying speed of the construction material is adjusted upwards based on the spraying adjustment proportion value to obtain the real-time spraying speed of the construction material.
10. A system for applying the PFWD-detection-based pavement cold-in-place recycling construction method according to any of claims 1 to 9, comprising a pavement state evaluation module, a construction execution analysis module, a paving speed real-time adjustment module, and a real-time spray adjustment module; The road surface state evaluation module is used for detecting the road surface state of a road surface to be constructed through the PFWD after the road surface detection signal is received by the construction equipment control center, obtaining a comprehensive road surface state evaluation value, obtaining the road surface paving initial speed through matching, and executing cold in-place regeneration construction; The construction execution analysis module is used for acquiring environmental parameters and construction material parameters, analyzing to obtain demulsification trend indexes, acquiring the pavement pre-paving height and real-time detection parameters of each real-time detection point, and analyzing to obtain pavement paving difficulty indexes; the real-time paving speed adjusting module is used for comprehensively analyzing to obtain the real-time paving speed of the construction material based on the demulsification trend index and the road surface paving difficulty index; The real-time spraying adjustment module is used for acquiring the real-time paving speed of the construction material, analyzing the real-time paving speed and the real-time reference paving speed of the construction material, obtaining the real-time spraying speed of the construction material, and adjusting the real-time spraying equipment and the real-time spraying speed.

Description

Road surface on-site cold regeneration construction method and system based on PFWD detection Technical Field The invention relates to the technical field of electric digital data processing, in particular to a pavement on-site cold regeneration construction method and system based on PFWD detection. Background With the development of road construction technology, the in-situ cooling and regenerating technology of the road surface is widely focused due to the advantages of environmental protection, high efficiency and the like. The existing pavement on-site cold regeneration construction method is realized by analyzing the mechanical parameters of different materials and the mixing ratio of regeneration materials. The digital-analog method pavement cold-in-place regeneration construction method based on PFWD detection disclosed in the patent application with publication number of CN117010057A comprises the steps of comprehensively evaluating an old cement concrete pavement by adopting a PFWD test method, acquiring data of a plurality of performance indexes, establishing a correlation relation of each bearing performance index based on the data, more accurately knowing the condition of the old pavement, providing a basis for subsequent rubblizing transformation, carrying out finite element numerical simulation by establishing a numerical model, carrying out mechanical response analysis on the rubblizing transformed pavement, evaluating pavement structural performance under different conditions, simultaneously determining mechanical parameter analysis of different materials and a regeneration material mixing ratio design method, adopting a regeneration material and rubblizing technology, effectively utilizing old cement concrete resources, reducing consumption of natural resources, reducing the requirement on traditional asphalt and reducing environmental pollution. A method for designing and calculating the asphalt concrete pavement of the road in the field, for example, the invention patent publication with the publication number of CN116561876B, comprises the steps of S1, collecting basic data, namely obtaining the total transportation amount and transportation vehicle data, dividing the total transportation amount by the vehicle load in the transportation vehicle data to calculate the transportation times of the vehicles, wherein the transportation vehicle data comprises the vehicle load, the vehicle axle distance and the vehicle axle number, the total transportation amount is the total transportation weight required during the construction period of the road in the field, S2, calculating the accumulated action times of the designed axle load, and S3, checking and calculating. However, in the process of implementing the technical scheme of the embodiment of the application, the application discovers that the above technology has at least the following technical problems: the existing pavement on-site cold regeneration construction system only considers the mechanical parameters of different materials and the mixing ratio of regeneration materials, but does not consider the strength forming speed of the cold regeneration mixture in the construction process of the alpine region, so the problem of untimely adjustment of the paving speed of the construction materials exists. Disclosure of Invention The pavement on-site cold regeneration construction method and system based on PFWD detection solve the problem that the paving speed of the construction material is not timely regulated in the prior art, and realize real-time regulation of the paving speed of the construction material. The embodiment of the application provides a pavement on-site cold regeneration construction method based on PFWD detection, which comprises the following steps of S1, after a pavement detection signal is received by a construction equipment control center, carrying out pavement state detection on a pavement to be constructed through PFWD to obtain a comprehensive pavement state evaluation value, matching to obtain pavement paving initial speed, carrying out on-site cold regeneration construction, S2, obtaining environment parameters and construction material parameters, analyzing to obtain demulsification trend indexes, obtaining pavement pre-paving height and real-time detection parameters of each real-time detection point, analyzing to obtain pavement paving difficulty indexes, S3, comprehensively analyzing to obtain real-time reference paving speed of construction materials based on demulsification trend indexes and pavement paving difficulty indexes, S4, obtaining real-time paving speed of the construction materials and analyzing with the real-time reference paving speed of the construction materials to obtain real-time spraying speed of the construction materials, and carrying out real-time spraying equipment and real-time spraying speed adjustment. The embodiment of the application provides a pavement on-site cold recycling c