CN-121435187-B - Heavy-duty railway transition section inclined jet grouting pile reinforcement construction quality dynamic monitoring method and system oriented to settlement control

CN121435187BCN 121435187 BCN121435187 BCN 121435187BCN-121435187-B

Abstract

The invention relates to the technical field of construction monitoring, and particularly discloses a dynamic monitoring method and a system for reinforcing construction quality of an inclined jet grouting pile at a transition section of a heavy haul railway, which are oriented to settlement control, wherein the method comprises the steps of collecting construction parameters including real-time drilling speed, real-time grouting pressure and real-time slurry flow and settlement records including real-time settlement amounts and vibration interference values of a road base surface and slope feet in a construction stage of the inclined jet grouting pile in real time; the method comprises the steps of calculating pile forming quality indexes based on construction parameters, calculating the settlement rate of a layered roadbed based on settlement records, constructing a three-dimensional correlation model by taking the construction parameters as an input layer, the pile forming quality indexes as an intermediate layer and the settlement rate of the layered roadbed as an output layer, acquiring settlement risk tracing results based on reverse matching of the correlation model and synchronous parameters when settlement risks are judged, determining construction parameter adjustment suggestions, generating a construction quality detection report, and realizing effective settlement control of the heavy-load railway transition section inclined jet grouting pile reinforcement construction process.

Inventors

LI YAFENG
DONG JUNLI
ZHANG QISHU
WU WANSHENG
CAI HAIBING
FENG SHOUZHONG
TIAN YINGHUI
ZHU JIANWEN
WANG CHANGBAI
WANG QIANG
NIE RUSONG

Assignees

安徽理工大学

Dates

Publication Date: 20260512
Application Date: 20251030

Claims (8)

1. The settlement control-oriented dynamic monitoring method for the reinforcing construction quality of the inclined jet grouting pile at the transition section of the heavy haul railway is characterized by comprising the following steps: the construction method comprises the steps of collecting construction parameters and sedimentation records of an oblique jet grouting pile in real time, wherein the construction parameters comprise real-time drilling speed, real-time grouting pressure and real-time slurry flow, and the sedimentation records comprise real-time sedimentation quantity and vibration interference values of road surfaces and slope feet of a heavy haul railway transition section; calculating pile forming quality indexes based on construction parameters, and calculating the settlement rate of the layered roadbed based on settlement records; Constructing a construction quality-piling quality-settlement risk correlation model by taking construction parameters as an input layer, piling quality indexes as an intermediate layer and the settlement rate of a layered roadbed as an output layer and adopting a multiple linear regression algorithm; when the settlement rate of the layered roadbed exceeds the corresponding preset settlement rate threshold value, reversely matching the contemporaneous parameter based on the association model to obtain a settlement risk tracing result; determining construction parameter adjustment suggestions based on the settlement risk tracing result, and generating a construction quality detection report; The training process of the association model comprises the following steps: taking the association coefficient of the middle layer and the input layer and the association coefficient of the output layer and the middle layer as model parameters, and enabling the fitting goodness of the association model to be not smaller than a preset fitting goodness threshold value through cross verification of optimization parameters; the settlement risk tracing method comprises the steps of obtaining a settlement risk tracing result based on reverse matching of synchronous parameters of a correlation model, and comprising the following steps: Generating a construction parameter vector based on the current construction parameters, carrying out standardized treatment on the construction parameter vector to obtain a standardized construction parameter vector, inputting the standardized construction parameter vector into an associated model for forward propagation calculation, and obtaining a pile forming quality index theoretical value corresponding to the middle layer; Fitting the theoretical value of the pile forming quality index obtained continuously with the actual pile forming quality index into two-dimensional sequence data, carrying out dynamic time warping on the two-dimensional sequence data, calculating trend association degree, and carrying out weighted fusion on the theoretical value of the pile forming quality index obtained continuously and the actual pile forming quality index based on the trend association degree to obtain a comprehensive quality evaluation vector; projecting the deviation between the theoretical value of the piling quality index and the actual piling quality index to a two-dimensional diagnosis plane to obtain diagnosis projection points, dividing a polygonal qualified domain in the two-dimensional diagnosis plane based on a history database, and calculating the shortest Euclidean distance from the diagnosis projection points to the boundary of the polygonal qualified domain; when the shortest Euclidean distance is not smaller than a preset distance threshold, introducing a stratum sensitivity coefficient matrix, carrying out coordinate transformation on the comprehensive quality evaluation vector, and calculating the contribution degree of each pile forming quality index dimension to the comprehensive deviation index in the transformed space; And identifying a dominant deviation index in the piling quality indexes based on the contribution degree of the piling quality index dimension to the comprehensive deviation index, and performing risk tracing in a risk reasoning knowledge graph based on the dominant deviation index to obtain a settlement risk tracing result.
2. The settlement control-oriented dynamic monitoring method for reinforcing construction quality of the inclined jet grouting pile at the transition section of the heavy haul railway, according to claim 1, is characterized by collecting construction parameters and settlement records of the construction stage of the inclined jet grouting pile in real time, and comprises the following steps: collecting real-time drilling speed, real-time grouting pressure and real-time slurry flow of an inclined jet grouting pile in a construction stage as construction parameters through sensors integrated by a drilling machine; based on settlement observation marks and vibration acceleration sensors arranged on the road base surface and the slope toe of the heavy-load railway transition section, real-time settlement and vibration interference values of the road base surface and the slope toe of the heavy-load railway transition section are respectively acquired in real time and are used as settlement records.
3. The settlement control-oriented dynamic monitoring method for reinforcing construction quality of a heavy haul railway transition section inclined jet grouting pile according to claim 1, wherein pile forming quality indexes are calculated based on construction parameters, and the settlement rate of a layered roadbed is calculated based on settlement records, and the method comprises the following steps: calculating the diameter of the pile based on the real-time grouting pressure, the real-time slurry flow and the stratum correction coefficient in the construction parameters; Calculating the uniformity of the pile body through wavelet packet energy entropy of the real-time drilling speed; Based on the vibration correction coefficient and the vibration interference value in the sedimentation record, correcting the real-time sedimentation quantity in the sedimentation record to obtain the real-time corrected sedimentation quantity; dividing a foundation bed surface layer range, a foundation bed middle layer range and a foundation bed bottom layer range based on the initial depths of the roadbed surface and the slope toe; Respectively calculating roadbed settlement rates of a foundation bed surface layer range, a foundation bed middle layer range and a foundation bed bottom layer range based on the real-time corrected settlement amount to serve as layered roadbed settlement rates; Wherein, pile forming quality indexes comprise pile forming diameter and pile body uniformity.
4. The settlement control-oriented dynamic monitoring method for reinforcing construction quality of the inclined jet grouting pile at the transition section of the heavy haul railway, according to claim 1, is characterized by dividing polygonal qualified domains in a two-dimensional diagnosis plane based on a history database, and comprises the following steps: Extracting pile forming diameters and pile body uniformity of all qualified construction stages from a historical database to form a qualified data point set on a two-dimensional diagnosis plane, and extracting pile forming diameters and pile body uniformity of all unqualified construction stages to form an unqualified data point set on the two-dimensional diagnosis plane; Clustering the qualified data point sets by adopting a density-based spatial clustering algorithm, and identifying pile-forming quality qualified point sets connected in density; Training an integrated learning classification model based on the qualified data point set and the unqualified data point set to obtain an integrated qualification discrimination model; Carrying out dense grid point prediction on the two-dimensional diagnosis plane based on the integrated qualification discrimination model, outputting qualification probability of dense grid points of the two-dimensional diagnosis plane, and generating a qualification probability distribution diagram based on the qualification probability of the dense grid points of the two-dimensional diagnosis plane; dividing a plurality of qualified probability similar lines of each target qualified probability in a two-dimensional diagnosis plane based on the qualified probability distribution diagram; And dividing a polygonal qualified domain in the two-dimensional diagnosis plane based on the pile-forming quality qualified point set and a plurality of qualified probability similar lines of all target qualified probabilities.
5. The settlement control-oriented dynamic monitoring method for reinforcing construction quality of the inclined jet grouting pile of the transition section of the heavy haul railway, according to claim 4, is characterized in that the dividing of polygonal qualified domains in a two-dimensional diagnosis plane based on the pile forming quality qualified point set and a plurality of qualified probability similar lines of all target qualified probabilities comprises: carrying out edge tracing on the pile-forming quality qualified point set to obtain a pile-forming quality qualified point set boundary, and calibrating the physical center of the pile-forming quality qualified point set boundary; taking the spacing between the pile-forming quality qualified point set boundary points on each straight line passing through the physical center and the points contained in each qualified probability similar line of each target qualified probability as the local spacing between the pile-forming quality qualified point set boundary and each qualified probability similar line of each target qualified probability in the corresponding straight line direction passing through the physical center; Based on the local distances between the pile-forming quality qualified point set boundary and each qualified probability similar line of each target qualified probability in all straight line directions passing through the physical center, calculating the comprehensive distance and the distance uniformity between the pile-forming quality qualified point set boundary and each qualified probability similar line of each target qualified probability; Calculating the matching degree of the pile quality qualified point set boundary and each target qualified probability based on the comprehensive distance and the distance uniformity of all qualified probability similar lines of the pile quality qualified point set boundary and each target qualified probability; Determining the matching weight of each target qualified probability, and calculating the comprehensive matching degree of each target qualified probability based on the matching weight of each target qualified probability and the matching degree of the pile-forming quality qualified point set boundary and each target qualified probability; And dividing a polygonal qualified domain in a two-dimensional diagnosis plane based on all qualified probability similar lines of the target qualified probability corresponding to the maximum comprehensive matching degree and the pile-forming quality qualified point set boundary.
6. The settlement control-oriented dynamic monitoring method for reinforcing construction quality of the inclined jet grouting pile of the transition section of the heavy haul railway according to claim 5, wherein dividing the polygonal qualified domain in the two-dimensional diagnosis plane based on all qualified probability similar lines of the target qualified probability corresponding to the maximum comprehensive matching degree and the pile-forming quality qualified point set boundary comprises the following steps: All single communication areas formed by intersecting all qualified probability similar lines of the target qualified probability corresponding to the maximum comprehensive matching degree and pile-forming quality qualified point set boundaries are used as verification areas; based on the qualification probability of all dense grid points in each verification area, calculating a qualification verification value of each verification area; Taking all qualified probability similar lines of the target qualified probability corresponding to the maximum comprehensive matching degree and the maximum overlapping area of the pile-forming quality qualified point set boundary as core qualified domains; And merging all verification areas with qualified verification values not smaller than a preset verification value threshold with the core qualified domain to serve as polygonal qualified domains in the two-dimensional diagnosis plane.
7. The settlement control-oriented dynamic monitoring method for reinforcing construction quality of the inclined jet grouting pile at the transition section of the heavy haul railway according to claim 1, wherein the construction parameter adjustment advice is determined based on the settlement risk tracing result, and a construction quality detection report is generated, and the method comprises the following steps: Determining construction parameter adjustment suggestions based on a settlement risk tracing result, collecting actual construction parameters after construction parameter adjustment, calculating new pile forming quality indexes, and obtaining new settlement records; calculating the construction parameter standard rate based on the current actual construction parameters; Calculating pile forming quality qualification rate based on the new pile forming quality index; calculating a sedimentation risk management and control rate based on the new sedimentation record; And generating a construction quality detection report based on the construction parameter standard reaching rate, the piling quality qualification rate and the sedimentation risk management and control rate.
8. The settlement control-oriented dynamic monitoring system for reinforcing construction quality of the inclined jet grouting pile of the transition section of the heavy haul railway is characterized by being used for executing the settlement control-oriented dynamic monitoring method for reinforcing construction quality of the inclined jet grouting pile of the transition section of the heavy haul railway, which is characterized by comprising the following steps: The construction recording module is used for collecting construction parameters and sedimentation records of the construction stage of the inclined jet grouting pile in real time, wherein the construction parameters comprise real-time drilling speed, real-time grouting pressure and real-time slurry flow, and the sedimentation records comprise real-time sedimentation quantity and vibration interference values of a road surface and a slope toe of a transition section of the heavy haul railway; the record denoising module is used for calculating pile forming quality indexes based on construction parameters and calculating the settlement rate of the layered roadbed based on the settlement record; the association analysis module is used for constructing an association model of construction quality, piling quality and sedimentation risk by taking construction parameters as an input layer, piling quality indexes as an intermediate layer and sedimentation rate of a layered roadbed as an output layer and adopting a multiple linear regression algorithm; The risk tracing module is used for reversely matching the contemporaneous parameters based on the association model to obtain a settlement risk tracing result when the settlement rate exceeds the preset settlement rate threshold value based on the initial settlement amount; And the quality monitoring module is used for determining construction parameter adjustment suggestions based on the settlement risk tracing result and generating a construction quality detection report.

Description

Heavy-duty railway transition section inclined jet grouting pile reinforcement construction quality dynamic monitoring method and system oriented to settlement control Technical Field The invention relates to the technical field of construction monitoring, in particular to a dynamic monitoring method and a dynamic monitoring system for reinforcing construction quality of a heavy haul railway transition section inclined jet grouting pile. Background In heavy haul railway construction, the transition section serves as a key part for connecting different structures, and stability of the transition section is critical to safe operation of a railway. The inclined jet grouting pile reinforcement technology can effectively enhance the bearing capacity of the foundation and control sedimentation, and is widely applied to heavy-load railway transition section construction. However, ensuring the reinforcing construction quality of the inclined jet grouting pile and effectively controlling the settlement become key tasks in railway construction. The dynamic monitoring method and the dynamic monitoring system for the reinforcing construction quality of the inclined jet grouting pile at the transition section of the heavy haul railway facing the settlement control have important significance. By monitoring various parameters and sedimentation conditions in the construction process in real time, potential quality problems and sedimentation risks can be found in time, and therefore targeted measures are adopted for adjustment and optimization. The method is beneficial to guaranteeing the long-term stability of the transition section of the heavy-duty railway, reducing the later maintenance cost and improving the safety and reliability of railway operation. Along with the continuous expansion of the construction scale of the heavy haul railway in China, the requirements on construction quality and sedimentation control are increasingly strict, and the technology has wide application prospect and is hopeful to promote the development of the heavy haul railway construction technology towards more refinement and intellectualization. However, the existing heavy haul railway transition section inclined jet grouting pile reinforcement construction quality monitoring technology is not comprehensive and timely enough in grasping the actual construction condition, and is difficult to accurately evaluate the pile quality and the sedimentation development situation. The method has the advantages that the correlation model between the construction quality, the piling quality and the sedimentation risk cannot be effectively constructed, so that when the roadbed sedimentation abnormality occurs, the root of the sedimentation risk cannot be accurately traced, reasonable construction parameter adjustment suggestions and construction quality detection reports are given, powerful support cannot be provided for construction quality control, and the construction quality and long-term stability of the heavy-load railway transition section are affected. Therefore, the invention provides a dynamic monitoring method and a system for the reinforcing construction quality of the inclined jet grouting pile at the transition section of the heavy haul railway facing the settlement control. Disclosure of Invention The invention provides a dynamic monitoring method and a system for reinforcing construction quality of a heavy haul railway transition section inclined jet grouting pile, which are oriented to settlement control. And calculating pile forming quality indexes and layered roadbed settlement rate based on the acquired data, quantifying construction parameters and settlement conditions, and facilitating deep analysis of the relation between the construction parameters and the settlement conditions. And constructing a construction quality-piling quality-settlement risk correlation model, so that the internal relation between each construction link and the settlement risk can be systematically revealed. When the subgrade settlement rate exceeds a threshold value, settlement risk tracing results are obtained by reversely matching contemporaneous parameters by means of the correlation model, and the reasons for causing the settlement risk can be accurately positioned. And determining a construction parameter adjustment suggestion based on a tracing result and generating a detection report, providing a scientific basis for construction adjustment, being beneficial to timely optimizing a construction process, effectively controlling settlement of a transition section of the heavy haul railway, and guaranteeing railway construction quality and subsequent operation safety. The invention provides a settlement control-oriented dynamic monitoring method for reinforcing construction quality of a heavy haul railway transition section inclined jet grouting pile, which comprises the following steps: the construction method comprises the steps of collecting const