CN-121992788-A - Method and system for monitoring grouting of cloth bag pile and electronic equipment

CN121992788ACN 121992788 ACN121992788 ACN 121992788ACN-121992788-A

Abstract

The application relates to the field of foundation treatment and pile foundation construction in civil engineering, and provides a method, a system and electronic equipment for monitoring grouting of a bag pile, wherein the method comprises the steps of obtaining grouting parameters in the grouting process of the bag pile; and predicting grouting parameters based on a grouting prediction model which is obtained by constructing in advance to obtain a grouting parameter prediction value, and alarming if the grouting parameter prediction value exceeds a preset alarm threshold value, wherein the grouting prediction model is obtained by constructing based on a hydrodynamic control equation. Is used for solving the defects of large construction quality fluctuation, high reworking rate and even possible engineering accidents in the related technology, according to the scheme, the construction parameters are dynamically adjusted by combining an automatic analysis system through real-time acquisition of grouting filling degree, soil deformation and grouting pressure data, so that the construction quality and efficiency of the bag-type pile are improved.

Inventors

GUO JING
LIU HANPENG
YE FEI
HAN XINGBO
LIU YINCAI
SHEN ZENG
ZHANG LEI
ZHANG RONGBO
Gou Fayu
ZHANG CHENWEI
ZHENG SHUXIANG
ZHANG MENGHAN
LI JIA
Zhong Wulin

Assignees

中铁十二局集团有限公司
中铁十二局集团第三工程有限公司

Dates

Publication Date: 20260508
Application Date: 20260127

Claims (10)

1. A method for monitoring grouting of a bag pile, comprising: Acquiring grouting parameters in the grouting process of the cloth bag pile; predicting grouting parameters based on a grouting prediction model which is constructed in advance to obtain grouting parameter prediction values; if the grouting parameter predicted value exceeds a preset alarm threshold value, alarming; the grouting prediction model is constructed based on a hydrodynamic control equation.
2. The method for monitoring grouting of a bag pile according to claim 1, wherein the predicting grouting parameters based on a pre-constructed grouting prediction model to obtain grouting parameter predicted values comprises: Normalizing the grouting parameters; Constructing a multi-dimensional characteristic tensor through a sliding time window, wherein a plurality of dimensions of the multi-dimensional characteristic tensor are consistent with the grouting parameters; and inputting the multidimensional characteristic tensor into a grouting prediction model which is constructed in advance to obtain a grouting parameter predicted value output by the grouting prediction model.
3. The method for monitoring grouting of a bag pile according to claim 1, wherein the grouting parameters include grouting pressure, soil displacement and grouting filling degree; the grouting pressure is obtained through monitoring of a pre-buried soil pressure sensor; the soil body displacement is obtained through monitoring of a pre-buried displacement sensor; the grouting filling degree is obtained through an optical fiber grating sensor and image recognition of a shot image.
4. The method for monitoring grouting of a bag pile according to claim 1, wherein the construction process of the grouting prediction model comprises: Acquiring space-time characteristics of model training data through a depth residual error network, wherein the model training data comprises historical grouting parameters; And adding a loss function by using a hydrodynamic control equation as a regularization term, and constructing to obtain the grouting prediction model.
5. The method for monitoring grouting of a bag pile according to claim 4, wherein a composite loss function is adopted in the construction process of the grouting prediction model, and the composite loss function accords with the following formula: (1) Wherein, the As a total loss function; dynamic weight coefficients of the data fitting items; Dynamic weight coefficients that are physical constraint terms; fitting term loss to the data; Is a physical constraint loss.
6. The method for bag pile grouting monitoring of claim 1, wherein the hydrodynamic control equations comprise Bingham fluid constitutive equation, mass conservation equation and momentum conservation equation.
7. A method for monitoring grouting of a pile in a bag according to claim 3, wherein the alarming if the predicted value of the grouting parameter exceeds a preset alarming threshold value comprises: when the grouting pressure exceeds a set pressure threshold range, adjusting the grouting speed; stopping grouting when the soil displacement exceeds a set displacement threshold value; And when the grouting filling degree is lower than a set filling degree threshold value, the grouting amount is increased.
8. The method for monitoring grouting of a bag pile according to claim 1, wherein the predicting grouting parameters based on the pre-constructed grouting prediction model to obtain grouting parameter predicted values further comprises: And training the grouting prediction model based on the grouting parameter predicted value.
9. A system for sack stake slip casting monitoring, its characterized in that includes: The parameter acquisition module is used for acquiring grouting parameters in the grouting process of the cloth bag pile; the parameter prediction module is used for predicting grouting parameters based on a grouting prediction model which is constructed in advance to obtain grouting parameter prediction values; the monitoring alarm module is used for alarming if the grouting parameter predicted value exceeds a preset alarm threshold value; the grouting prediction model is constructed based on a hydrodynamic control equation.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for bag-pile grouting monitoring according to any one of claims 1-8 when executing the program.

Description

Method and system for monitoring grouting of cloth bag pile and electronic equipment Technical Field The invention relates to the technical field of foundation treatment and pile foundation construction in civil engineering, in particular to a method and system for monitoring grouting of a bag pile and electronic equipment. Background The cloth bag grouting pile is a new technology combining grouting technology and geotextile, and is mainly used for reinforcing soft soil foundations. The basic principle is that a grouting pipe is sunk into a hole through mechanical hole forming, then a nylon bag is bound outside the grouting pipe, and grout is injected into the bag through pressure grouting to form a pile body with certain bearing capacity, so that the grouting pile is widely applied to building, bridges and subway engineering. However, monitoring of filling degree of cloth bag piles, deformation of soil around piles, internal forces of pile bodies and the like has certain technical defects. The problems in the related art are that (1) grouting filling degree is difficult to monitor in real time, at present, manual experience or post-drilling detection is mainly relied on, whether grout fully fills a pile body and surrounding soil bodies in a construction process cannot be accurately judged, local hollows or insufficient strength are easily caused, and overall bearing performance is affected, and (2) soil deformation control is lag, namely, soil splitting or excessive rising is possibly caused by too high grouting pressure, and insufficient grout diffusion is caused by insufficient grouting pressure. The prior art mostly adopts a single displacement sensor or manual measurement, has low data acquisition frequency, is difficult to discover abnormal deformation in time, and (3) the grouting pressure and the construction parameters are disjointed, namely the grouting pressure in the construction is dynamically changed, but the traditional method lacks a real-time pressure feedback system, only uses fixed parameters for construction, and is easy to cause the condition that the pressure is out of limit or insufficient, thereby causing the waste of resources or quality defect. These problems lead to large fluctuations in construction quality, high rework rate, and even possible engineering accidents. Therefore, a multi-parameter collaborative monitoring system is needed to realize the omnibearing and multi-dimensional real-time monitoring of the cloth bag grouting pile, and a more scientific and reliable basis is provided for engineering design and construction. Disclosure of Invention The application provides a method, a system and electronic equipment for monitoring grouting of a cloth bag pile, which are used for solving the defects of large construction quality fluctuation, high reworking rate and even possibility of causing engineering accidents in the related technology. The invention provides a method for monitoring grouting of a cloth bag pile, which comprises the following steps: Acquiring grouting parameters in the grouting process of the cloth bag pile; predicting grouting parameters based on a grouting prediction model which is constructed in advance to obtain grouting parameter prediction values; if the grouting parameter predicted value exceeds a preset alarm threshold value, alarming; the grouting prediction model is constructed based on a hydrodynamic control equation. According to the method for monitoring grouting of the cloth bag pile provided by the invention, grouting parameters are predicted based on a grouting prediction model which is constructed in advance to obtain grouting parameter predicted values, and the method comprises the following steps: Normalizing the grouting parameters; Constructing a multi-dimensional characteristic tensor through a sliding time window, wherein a plurality of dimensions of the multi-dimensional characteristic tensor are consistent with the grouting parameters; and inputting the multidimensional characteristic tensor into a grouting prediction model which is constructed in advance to obtain a grouting parameter predicted value output by the grouting prediction model. According to the method for monitoring the grouting of the cloth bag pile, grouting parameters comprise grouting pressure, soil displacement and grouting filling degree; the grouting pressure is obtained through monitoring of a pre-buried soil pressure sensor; the soil body displacement is obtained through monitoring of a pre-buried displacement sensor; the grouting filling degree is obtained through an optical fiber grating sensor and image recognition of a shot image. According to the method for monitoring grouting of the cloth bag pile, provided by the invention, the construction process of the grouting prediction model comprises the following steps: Acquiring space-time characteristics of model training data through a depth residual error network, wherein the model training data comprises hi