CN-121997531-A - Tubular pile deflection risk prediction method, device, equipment and storage medium

Abstract

The application relates to the field of construction engineering, in particular to a method, a device, equipment and a storage medium for predicting pile deflection risk of a pipe pile. The pile bias risk prediction method comprises the steps of obtaining geological investigation data of a target site and construction data of piles, constructing a triangular mesh model of a silt layer in a foundation pit excavation area based on the geological investigation data, generating plane coordinates of the piles based on the construction data of the piles, determining the silt layer burial depth at the plane coordinates of the piles based on the plane coordinates of the piles and the triangular mesh model, and determining the bias risk degree of the piles based on the silt layer burial depth at the plane coordinates of the piles, pile body parameters of the piles and foundation pit excavation depth. The quantitative evaluation method and the quantitative analysis device realize quantitative evaluation of the risk of the tubular pile deflection in the silt layer and quantitative analysis of the risk of the tubular pile deflection before excavation of the foundation pit.

Inventors

• JIAN SIMIN
• XIAO QI
• CHEN YIHUA
• LONG JIAQI
• ZENG JINRUI
• Zhong Canqiong
• ZHENG ZHITAO
• LING ZAO
• GUO RUIWEN
• LIU JINGANG
• DU FENGGUANG
• YANG ZITIAN
• Lin Kunbin
• LIANG XUFENG
• LUO WEICHENG

Assignees

• 广州建筑股份有限公司

Dates

Publication Date

20260508

Application Date

20251209

Claims (10)

1. 1. The tubular pile deflection risk prediction method is characterized by comprising the following steps of: obtaining geological investigation data of a target site and construction data of a tubular pile, wherein the geological investigation data comprise investigation holes, foundation pit boundary control points and foundation pit bottom excavation depth; constructing a triangular mesh model of a silt layer in the foundation pit excavation area based on the geological survey data; Generating plane coordinates of each tubular pile based on the construction data of the tubular pile; Determining the burial depth of a silt layer at the plane coordinates of each tubular pile based on the plane coordinates of each tubular pile and the triangular mesh model; And determining the offset pile risk degree of each tubular pile based on the burial depth of the silt layer at the plane coordinates of each tubular pile, the pile body parameters of each tubular pile and the excavation depth of the foundation pit bottom.
2. 2. The method for predicting risk of tubular pile bias pile according to claim 1, wherein the constructing a triangular mesh model of a silt layer in the foundation pit excavation area comprises: triangulating the excavation surface of the foundation pit to be detected by taking the exploration hole as the vertex of a triangle to obtain a first triangular grid; triangulating an excavation surface of the foundation pit to be detected by using the investigation hole, the foundation pit boundary control point and a first intersection point as vertexes of triangles respectively to obtain a second triangular grid, wherein the first intersection point is an intersection point of an excavation boundary of the foundation pit to be detected and grid lines in the first triangular grid, and the excavation boundary is a boundary of a single communication plane formed by the foundation pit boundary control point; and deleting the triangular grids except the foundation pit boundary control points and the first intersection points of the second triangular grids to obtain a triangular grid model of the silt layer in the foundation pit excavation area.
3. 3. The method for predicting risk of tubular pile deflection according to claim 2, wherein, The determining the burial depth of the silt layer at the plane coordinates of the pipe piles based on the plane coordinates of the pipe piles and the triangular mesh model comprises the following steps: determining a triangle in which the plane coordinate of the tubular pile is positioned in the triangular mesh model; And obtaining the sludge layer burial depth at the plane coordinates of the tubular pile according to the vertex coordinates of the triangle and the sludge layer burial depth corresponding to the vertex coordinates.
4. 4. A method for predicting risk of tubular pile deflection according to claim 3, wherein determining the depth of burial of the silt layer corresponding to each of the vertex coordinates comprises: if the vertexes of the triangle are investigation holes, the sludge layer burial depth of the investigation holes is the sludge layer burial depth corresponding to the vertex coordinates; If the vertexes of the triangle are the foundation pit boundary control points, the foundation pit boundary control points are the sludge layer burial depths corresponding to the vertex coordinates; if the vertexes of the triangle are boundary intersection points, the silt layer burial depth corresponding to the vertex coordinates is determined by linear interpolation through reconnaissance Kong Yuni layers burial depths of two end points of the grid edge of the first triangular grid to which the silt layer burial depth belongs; and if the vertex of the triangle is the first intersection point, the sludge layer burial depth corresponding to the vertex coordinate is the intersection point sludge layer burial depth corresponding to the first intersection point.
5. 5. The method for predicting risk of pile deflection of pipe piles according to claim 1, wherein the determining the risk degree of pile deflection of each pipe pile comprises the following formula: ; Wherein, the A and b are coefficients respectively for the risk degree of the deflection of the tubular pile, For the length of the pipe pile in the silt layer, The length of the pipe pile at the foundation pit bottom is the upward depth, Is the length of the pipe pile.
6. 6. The method for predicting risk of tubular pile deflection according to claim 1, wherein, Determining the burial depth of the silt layer at the plane coordinates of the pipe pile, which comprises the following formula: ; ; Wherein, the At the plane coordinates of the tubular pile is buried at the boundary point under the silt layer, 、 、 、 The correlation coefficient between the burial depth of the lower boundary point of the silt layer at the plane coordinate of the pipe pile and the coordinate of the vertex of the triangle and the correlation coefficient between the burial depth of the lower boundary point of the silt layer at the vertex, The boundary point on the silt layer at the plane coordinates of the pipe pile is buried deep, 、 、 、 And X, Y is the X coordinate and the Y coordinate of the plane coordinate of the pipe pile respectively, wherein the coefficient is related to the coordinate correlation coefficient of the boundary point burial depth on the silt layer at the plane coordinate of the pipe pile and the triangular vertex and the coefficient is related to the boundary point burial depth on the silt layer at the vertex.
7. 7. The method for predicting risk of tubular pile bias according to claim 4, wherein determining the crossing point sludge layer burial depth of the first crossing point comprises the following formula: ; Wherein, the The burial depth of the boundary point on the intersection point silt layer of the first intersection point is the burial depth of the boundary point, Is the burial depth of the boundary point under the intersection silt layer of the first intersection point, For the boundary point on the investigation silt layer corresponding to the first end point of the grid line in the first triangular grid to which the first intersection point belongs, For the boundary point on the investigation silt layer corresponding to the second end point of the grid line in the first triangular grid to which the first intersection point belongs, For surveying the boundary points under the silt layer corresponding to the first end points of the grid lines in the first triangular grid to which the first intersection points belong, And (3) surveying the boundary point under the silt layer corresponding to the second end point of the grid line in the first triangular grid to which the first intersection point belongs.
8. 8. A tubular pile bias risk prediction device suitable for use in the tubular pile bias risk prediction method of any one of claims 1 to 7, the tubular pile bias risk prediction device comprising: the data acquisition unit is used for acquiring geological investigation data of a target site and construction data of the tubular pile, wherein the geological investigation data comprise investigation holes, foundation pit boundary control points and foundation pit bottom excavation depth; the triangular mesh model construction unit is used for constructing a triangular mesh model of a silt layer in the foundation pit excavation area based on the geological survey data; A plane coordinate generating unit for generating plane coordinates of each pipe pile based on construction data of the pipe pile; The silt layer burial depth determining unit is used for determining the silt layer burial depth at the plane coordinates of the pipe piles based on the plane coordinates of the pipe piles and the triangular mesh model; And the pile bias risk degree calculation unit is used for determining the pile bias risk degree of each tubular pile based on the burial depth of the silt layer at the plane coordinates of each tubular pile, the pile body parameters of each tubular pile and the excavation depth of the foundation pit bottom.
9. 9. A tubular pile deflection risk prediction apparatus, comprising: A memory for storing a computer program; A processor for invoking and executing the computer program to implement a tubular pile bias risk prediction method according to any one of claims 1 to 7.
10. 10. A computer storage medium storing a program or instructions that cause a computer to perform the tubular pile bias risk prediction method according to any one of claims 1 to 7.

Description

Tubular pile deflection risk prediction method, device, equipment and storage medium Technical Field The application relates to the field of construction engineering, in particular to a method, a device, equipment and a storage medium for predicting pile deflection risk of a pipe pile. Background Along with the promotion of the urban process, the development requirement of underground space is increasing, the excavation depth of foundation pit engineering (such as underground garage, underground market, subway station and other matched foundation pits) is increasing, and the construction environment is also becoming more complex. The tubular pile foundation is a common foundation form. When a deep silt layer exists in a construction site, the silt layer is difficult to provide an effective pipe pile construction working surface due to the characteristics of high water content, high compressibility, low strength, strong fluidity and the like, and a part of engineering is selected to excavate a foundation pit after the pipe pile is constructed on the original ground. When foundation pit excavation operation is carried out on a deep silt layer site, the silt layer is disturbed by construction machinery in the excavation process, the soil body stress state can be changed drastically, and the constructed tubular pile can be subjected to uneven lateral soil pressure action of surrounding silt layers. The complex stress state is extremely easy to cause inclination and deviation (namely, deviation pile) of the pipe pile, the deviation pile not only can greatly reduce the vertical bearing capacity and the pulling resistance of the pipe pile, but also can possibly cause interlocking risks such as pipe pile fracture, instability of a foundation pit supporting structure and the like, and even cause construction period delay and engineering reworking when serious, so that huge economic loss is caused, and potential threat is also formed to the life safety of constructors. At present, the engineering community is used for solving the problem of pile deflection of the deep silt layer field pipe pile, and the problem is mostly dependent on construction experience or post remediation, for example, the pile deflection is found through detection after the foundation pit is excavated, and then measures such as correction and pile compensation are adopted. However, the post-processing mode cannot pre-judge the offset pile risk in advance, so that engineering hidden dangers caused by the offset pile are difficult to avoid fundamentally, and meanwhile, the prior art lacks a quantitative analysis method for combining site geological conditions and the actual condition of tubular pile construction, so that evaluation of the offset pile risk lacks scientificity and accuracy, and reliable basis cannot be provided for optimization of foundation pit excavation schemes and establishment of tubular pile protection measures. Therefore, a method for analyzing the risk of pile deflection of the pile in the silt layer is needed. Disclosure of Invention In order to solve the technical problems, the application provides a tubular pile deflection risk prediction method, device, equipment and storage medium, which realize quantitative evaluation of tubular pile deflection risk of a silt layer site and quantitative analysis of tubular pile deflection risk before excavation of a foundation pit, provide data guidance for fine excavation of earthwork of the foundation pit and ensure construction quality. The application provides a pile bias risk prediction method, which comprises the steps of obtaining geological investigation data of a target site and construction data of a pile, wherein the geological investigation data comprise investigation holes, foundation pit boundary control points and foundation pit bottom excavation depth, constructing a triangular grid model of a silt layer in a foundation pit excavation area based on the geological investigation data, generating plane coordinates of the pile based on the construction data of the pile, determining the silt layer burial depth at the plane coordinates of the pile based on the plane coordinates of the pile and the triangular grid model, and determining the bias risk degree of the pile based on the silt layer burial depth at the plane coordinates of the pile, pile body parameters of the pile and the foundation pit bottom excavation depth. Optionally, in some embodiments, the constructing a triangular mesh model of the silt layer in the excavation area of the foundation pit includes triangulating an excavation surface of the foundation pit to be detected with the exploration hole as a triangle vertex to obtain a first triangular mesh, triangulating an excavation surface of the foundation pit to be detected with the exploration hole, the foundation pit boundary control point and a first intersection point being triangle vertices respectively to obtain a second triangular mesh, wherein the first