Deformed steel structure deformation assessment method based on monitoring point data association

Abstract

The invention discloses a deformed steel structure deformation assessment method based on monitoring point data association, and belongs to the field of deformed steel structure deformation assessment, and the method comprises the steps: obtaining the three-dimensional coordinates of all temporary supporting points distributed on a deformed steel structure; based on the three-dimensional coordinates of the temporary supporting points, carrying out space surface division on the deformed steel structure to obtain a plurality of space surfaces of the steel structure to be measured; modeling the special-shaped steel structure, and simulating responses under different working conditions by using a simulation technology to obtain a deformation conduction relationship on a space surface of each to-be-tested steel structure; and taking the boundary points and the temporary supporting points on the spatial surfaces of the to-be-tested steel structures as monitoring points, collecting deformation data at the monitoring points, and completing deformation evaluation of the deformed steel structures based on the deformation conduction relationship on the spatial surfaces of the to-be-tested steel structures. The problem that mutual influence of deformation between connection points is not considered in an existing method is solved.

Description

Technical Field

[0001] The invention belongs to the field of deformation assessment of special-shaped steel structures, and in particular relates to a deformation assessment method of special-shaped steel structures based on monitoring point data association. Background Art

[0002] With the continuous development of the construction industry, the building shapes and structural forms are becoming increasingly complex and diverse. Special-shaped steel structures have been widely used in public buildings such as large stadiums, exhibition halls, airport terminals, and some landmark buildings due to their unique shapes and good mechanical properties. These special-shaped steel structures often have irregular shapes, complex spatial structures, and large spans. Traditional structural deformation assessment methods are difficult to directly apply, and special assessment technologies need to be developed based on their characteristics.

[0003] The deformation of steel structures is directly related to the safety and stability of the structure. Excessive deformation may lead to stress concentration in structural components, reduce the bearing capacity of the structure, and even cause structural damage and safety accidents. For special-shaped steel structures, due to their complex structural forms and higher potential deformation risks, more accurate and reliable deformation assessment technology is needed to ensure the safety of the structure.

[0004] During the project quality acceptance and use process, there are also strict requirements for the control of steel structure deformation. Accurately evaluating the deformation of special-shaped steel structures helps to timely discover quality problems during the construction process, as well as monitor and evaluate the health status of the structure during the use stage to ensure the normal use and durability of the structure.

[0005] In recent years, advanced measurement methods such as laser measurement technology, total station measurement technology, 3D laser scanning technology, and digital image correlation technology have emerged and developed continuously, providing more accurate and efficient data collection methods for deformation assessment of special-shaped steel structures. These technologies can quickly obtain 3D coordinate information on the surface of the structure, accurately measure the deformation amount and deformation distribution of the structure, and provide rich data support for deformation assessment.

[0006] The advancement of sensor technology makes it possible to install various types of sensors in structures, such as strain sensors, displacement sensors, etc., to achieve real-time monitoring of structural deformation. Real-time data obtained through sensor networks can timely grasp the deformation of structures under different working conditions, providing a powerful technical means for deformation assessment and structural health monitoring. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the present invention provides a deformation assessment method for special-shaped steel structures based on monitoring point data association, which solves the problem that the prior method does not consider the mutual influence of deformations between connection points.

[0008] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is: a deformation assessment method of a special-shaped steel structure based on monitoring point data association, comprising: Obtain the three-dimensional coordinates of all temporary support points arranged on the special-shaped steel structure; Based on the three-dimensional coordinates of each temporary support point, the special-shaped steel structure is divided into spatial surfaces to obtain several spatial surfaces of the steel structure to be tested; Model the special-shaped steel structure, use simulation technology to simulate the response under different working conditions, and obtain the deformation conduction relationship on the spatial surface of each steel structure to be tested; The boundary points and temporary support points on the spatial surface of each steel structure to be tested are used as monitoring points, and the deformation data at each monitoring point is collected. The deformation assessment of the special-shaped steel structure is completed based on the deformation conduction relationship on the spatial surface of each steel structure to be tested.

[0009] Furthermore, the spatial surface of the special-shaped steel structure is divided based on the three-dimensional coordinates of each temporary support point to obtain a plurality of spatial surfaces of the steel structure to be measured, specifically: Several boundary points are evenly set at the edge of the special-shaped steel structure, and the slope and three-dimensional coordinates of the section where each boundary point and temporary support point are located are obtained; According to the three-dimensional coordinates of each boundary point and temporary support point, the DBSCAN density clustering algorithm is used to cluster and obtain several dense clusters; According to the slope of the section where each boundary point and temporary support point are located, it is judged whether the maximum slope difference in each dense cluster is greater than the difference threshold. If so, the current dense cluster is marked as a sub-clustering class, otherwise, the current dense cluster is marked as a final cluster; For the sub-clustering, based on the slope of the section where each boundary point and temporary support point is located, the K-means clustering algorithm is used to cluster and obtain the cluster subset of the sub-clustering; Based on the final cluster and the cluster subsets of the sub-clustered clusters, spatial surface division is performed to obtain several spatial surfaces of the steel structure to be tested.

[0010] Furthermore, each of the steel structure space surfaces to be tested includes a space surface obtained based on the final cluster and cluster subset division and a closed space surface on the remaining part of the special-shaped steel structure after the final cluster and cluster subset division is completed.

[0011] Furthermore, the constraint conditions of the spatial surface obtained based on the final clusters and cluster subsets are:

[0012] in, is the area of ​​the spatial surface obtained based on the final cluster or cluster subset division; is the maximum value function; For the selected points that serve as the boundaries of the shape; Reason The area of ​​a closed figure formed by connecting points; is the final cluster or cluster subset; for The complement of ; It is a point cloud set of the surface of the special-shaped steel structure included in the spatial surface obtained based on the final cluster or cluster subset division.

[0013] Furthermore, the special-shaped steel structure is modeled, and the response under different working conditions is simulated by simulation technology to obtain the deformation conduction relationship on the spatial surface of each steel structure to be tested, which is specifically: A1. Construct a three-dimensional topological structure of each steel structure space surface to be tested according to the connection points and connection relationships of each steel structure space surface to be tested; A2. The boundary points and temporary support points on the three-dimensional topological structure of each steel structure space surface to be tested are taken as reference points, and the points other than the reference points are taken as connection points; A3. Model the special-shaped steel structure, use simulation technology to simulate the response under different working conditions, obtain the deformation data of each reference point and each connection point on the space surface of each steel structure to be tested under different working conditions, use the deformation data of each connection point on the space surface of each steel structure to be tested under different working conditions as the deformation relationship verification data set, and use the deformation data of each reference point on the space surface of each steel structure to be tested under different working conditions as the basic deformation data set; A4. Obtain the current spatial surface of the steel structure to be tested; A5. According to the three-dimensional topological structure of the current steel structure space surface to be measured, obtain the connection relationship between each connection point and the reference point:

[0014] in, For the The connection relationship between the connection points and the reference point; For the Connection point to The connection step length of the reference points is the minimum number of edges that need to be passed from the connection point to the reference point on the three-dimensional topological structure of the current steel structure space surface to be measured; A6. Initialize the deformation conduction equation based on time evolution; A7. Based on the deformation relationship verification data set and the basic deformation data set, several groups of deformation data without external environmental influence and with different operation time are extracted, and based on the connection relationship between each connection point and the reference point, the deformation conduction under the natural loss of the current steel structure space surface to be tested is quantified:

[0015] in, is the deformation conduction of the current steel structure space surface under natural loss, indicating the deformation conduction of a single step per unit time under natural loss; For the Single-step loss conduction of deformation data with different operation time without external environment influence; The deformation data without external environment influence and with different operation time are numbered and sorted in positive order from short to long operation time; is the total number of samples of deformation data without external environmental influence and with different operation time; The first group is single-step loss conduction of deformation data without external environmental influence and with different operation time; For the The operation time of a group of deformation data with different operation times and without external environmental influence; The operation time of the first group of deformation data without external environmental influence and with different operation times; is the total number of benchmark points; For the Connection point to The connection step length of the reference points; is the total number of connection points; For the The deformation data of the group without external environment influence and different operation time The deformation of the connection points; For the The deformation data of the group without external environment influence and different operation time Deformation of a reference point; A8. Extract the deformation relationship validation dataset and the basic deformation dataset. Group operation time and The same deformation data sample set but with external environmental influences, and the deformation conduction of the current steel structure space surface under the influence of environmental factors is obtained; A9. Based on the basic deformation samples in the basic deformation data set, the deformation of each connection point is predicted using the deformation conduction equation based on time evolution, and the deformation prediction error is calculated based on the deformation relationship verification data set; A10, determine whether the deformation prediction error is less than the error threshold, if so, return to predict the next basic deformation sample, otherwise, update the deformation conduction equation based on time evolution according to the deformation conduction of the current steel structure space surface under natural loss and the deformation conduction of the current steel structure space surface under the influence of environmental factors, and return to step A7, until the deformation prediction error of each sample in the deformation relationship training data set is less than the error threshold, and enter step A11; A11. The deformation conduction equation based on time evolution is used as the deformation conduction relationship on the spatial surface of the steel structure to be tested; A12. Return to step A4 until the deformation conduction relationship of all the spatial surfaces of the steel structure to be tested is obtained.

[0016] Furthermore, the expression of the deformation conduction equation based on time evolution in A6 is:

[0017] in, is the deformation conduction equation based on time evolution, which represents the relationship between each reference point on the spatial surface of the steel structure to be tested and the Deformation conduction at each connection point; is the total number of benchmark points; For the The reference point Deformation influence coefficient of each connection point; For the Deformation of a reference point; For the The connection point and The number of adjacent connection points on the shortest connection path of the reference point; For the The adjacent connection point pair Deformation influence coefficient of each connection point; The reference points on the current steel structure space surface to be measured are Deformation conduction between adjacent connection points.

[0018] Furthermore, the expression for the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors in A8 is:

[0019] in, is the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors, which means the deformation conduction of a single step length per unit time under the influence of environmental factors; for Middle Single-step environmental loss conduction of samples; For operation time and The total number of samples in the deformation data sample set that are the same but affected by the external environment; for The sample number in ; for Middle In the sample The deformation of the connection points; for Middle In the sample Deformation of a reference point; Operation time The number of unit durations included.

[0020] Furthermore, the expression of the deformation prediction error in A9 is:

[0021] in, is the deformation prediction error; is the normalization function; is the deformation conduction equation based on time evolution, which represents the relationship between each reference point on the spatial surface of the steel structure to be tested and the Deformation conduction at each connection point; For the The actual deformation of the connection point.

[0022] Furthermore, the expression of the deformation conduction equation based on time evolution after update in A10 is:

[0023]

[0024] in, is the updated deformation conduction equation based on time evolution, which represents the updated relationship between each reference point on the spatial surface of the steel structure to be measured and the Deformation conduction at each connection point; After the update The reference point Deformation influence coefficient of each connection point; For the Deformation of a reference point; For the The connection point and The number of adjacent connection points on the shortest connection path of the reference point; After the update The adjacent connection point pair Deformation influence coefficient of each connection point; The reference points on the current steel structure space surface to be measured are Deformation conduction of adjacent connection points; For the The reference point Deformation influence coefficient of each connection point; For the The corresponding basic deformation sample in the deformation relationship verification dataset is The actual deformation of the connection points; For the The first The predicted deformation of each connection point; is the adjustment coefficient of deformation conduction under natural loss; is the adjustment coefficient of deformation conduction under the influence of environmental factors; is the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors, which means the deformation conduction of a single step length per unit time under the influence of environmental factors; For the The adjacent connection point pair Deformation influence coefficient of each connection point; After the update The reference point Deformation influence coefficient of each connection point; For the The reference point Deformation influence coefficient of adjacent connection points; Adjust the step size for the influence coefficients of adjacent connection points.

[0025] Furthermore, the boundary points and temporary support points on the spatial surface of each steel structure to be tested are used as monitoring points, and the deformation data at each monitoring point is collected. The deformation assessment of the special-shaped steel structure is completed based on the deformation conduction relationship on the spatial surface of each steel structure to be tested, specifically: Collect deformation data of each monitoring point, and based on the deformation data of each monitoring point, use the deformation conduction relationship on the spatial surface of each steel structure to be measured to obtain the deformation data of all connection points on the spatial surface of each steel structure to be measured; According to the deformation data of all connection points on the spatial surface of each steel structure to be tested, and based on the preset connection point deformation severity level threshold, the deformation assessment of the special-shaped steel structure is completed.

[0026] The beneficial effects of the present invention are as follows: the present invention performs a first spatial surface division on the special-shaped steel structure based on the density of temporary support points and boundary points, and then performs a second division based on the slope of the section, so that the fluctuation of the divided spatial surface is kept within a certain degree, and the influence relationship of each connection point in a single spatial surface can be controlled to the greatest extent, avoiding the error caused by the special-shaped fluctuation; at the same time, it emphasizes the influence of the monitoring points, that is, the boundary points and temporary support points on each connection point, and also introduces the influence of adjacent connection points, which can improve the deformation prediction accuracy of each connection point and reduce the workload of actual deformation measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0029] like Figure 1 As shown, in one embodiment of the present invention, a deformation assessment method of a special-shaped steel structure based on monitoring point data association includes: Obtain the three-dimensional coordinates of all temporary support points arranged on the special-shaped steel structure; Based on the three-dimensional coordinates of each temporary support point, the special-shaped steel structure is divided into spatial surfaces to obtain several spatial surfaces of the steel structure to be tested; Model the special-shaped steel structure, use simulation technology to simulate the response under different working conditions, and obtain the deformation conduction relationship on the spatial surface of each steel structure to be tested; The boundary points and temporary support points on the spatial surface of each steel structure to be tested are used as monitoring points, and the deformation data at each monitoring point is collected. The deformation assessment of the special-shaped steel structure is completed based on the deformation conduction relationship on the spatial surface of each steel structure to be tested.

[0030] The spatial surface of the special-shaped steel structure is divided based on the three-dimensional coordinates of each temporary support point to obtain a number of spatial surfaces of the steel structure to be tested, specifically: Several boundary points are evenly set at the edge of the special-shaped steel structure, and the slope and three-dimensional coordinates of the section where each boundary point and temporary support point are located are obtained; According to the three-dimensional coordinates of each boundary point and temporary support point, the DBSCAN density clustering algorithm is used to cluster and obtain several dense clusters; According to the slope of the section where each boundary point and temporary support point are located, it is judged whether the maximum slope difference in each dense cluster is greater than the difference threshold. If so, the current dense cluster is marked as a sub-clustering class, otherwise, the current dense cluster is marked as a final cluster; For the sub-clustering, based on the slope of the section where each boundary point and temporary support point is located, the K-means clustering algorithm is used to cluster and obtain the cluster subset of the sub-clustering; Based on the final cluster and the cluster subsets of the sub-clustered clusters, spatial surface division is performed to obtain several spatial surfaces of the steel structure to be tested.

[0031] In this embodiment, the purposes of performing two divisions are: to ensure a strong correlation between support points in the same spatial surface; and to ensure that the fluctuation degree of the same spatial surface is within a controllable range.

[0032] Each of the steel structure space surfaces to be tested includes a space surface obtained based on the final cluster and cluster subset division and a closed space surface on the remaining part of the special-shaped steel structure after the final cluster and cluster subset division is completed.

[0033] The constraints of the spatial surface obtained based on the final clusters and cluster subsets are:

[0034] in, is the area of ​​the spatial surface obtained based on the final cluster or cluster subset division; is the maximum value function; For the selected points that serve as the boundaries of the shape; Reason The area of ​​a closed figure formed by connecting points; is the final cluster or cluster subset; for The complement of ; It is a point cloud set of the surface of the special-shaped steel structure included in the spatial surface obtained based on the final cluster or cluster subset division.

[0035] The special-shaped steel structure is modeled, and the response under different working conditions is simulated by simulation technology to obtain the deformation conduction relationship on the spatial surface of each steel structure to be tested, which is specifically: A1. Construct a three-dimensional topological structure of each steel structure space surface to be tested according to the connection points and connection relationships of each steel structure space surface to be tested; A2. The boundary points and temporary support points on the three-dimensional topological structure of each steel structure space surface to be tested are taken as reference points, and the points other than the reference points are taken as connection points; A3. Model the special-shaped steel structure, use simulation technology to simulate the response under different working conditions, obtain the deformation data of each reference point and each connection point on the space surface of each steel structure to be tested under different working conditions, use the deformation data of each connection point on the space surface of each steel structure to be tested under different working conditions as the deformation relationship verification data set, and use the deformation data of each reference point on the space surface of each steel structure to be tested under different working conditions as the basic deformation data set; A4. Obtain the current spatial surface of the steel structure to be tested; A5. According to the three-dimensional topological structure of the current steel structure space surface to be measured, obtain the connection relationship between each connection point and the reference point:

[0036] in, For the The connection relationship between the connection points and the reference point; For the Connection point to The connection step length of the reference points is the minimum number of edges that need to be passed from the connection point to the reference point on the three-dimensional topological structure of the current steel structure space surface to be measured; A6. Initialize the deformation conduction equation based on time evolution; A7. Based on the deformation relationship verification data set and the basic deformation data set, several groups of deformation data without external environmental influence and with different operation time are extracted, and based on the connection relationship between each connection point and the reference point, the deformation conduction under the natural loss of the current steel structure space surface to be tested is quantified:

[0037] in, is the deformation conduction of the current steel structure space surface under natural loss, indicating the deformation conduction of a single step per unit time under natural loss; For the Single-step loss conduction of deformation data with different operation time without external environment influence; The deformation data without external environment influence and with different operation time are numbered and sorted in positive order from short to long operation time; is the total number of samples of deformation data without external environmental influence and with different operation time; The first group is single-step loss conduction of deformation data without external environmental influence and with different operation time; For the The operation time of a group of deformation data with different operation times and without external environmental influence; The operation time of the first group of deformation data without external environmental influence and with different operation times; is the total number of benchmark points; For the Connection point to The connection step length of the reference points; is the total number of connection points; For the The deformation data of the group without external environment influence and different operation time The deformation of the connection points; For the The deformation data of the group without external environment influence and different operation time Deformation of a reference point; A8. Extract the deformation relationship verification dataset and the basic deformation dataset. Group operation time and The same deformation data sample set but with external environmental influences, and the deformation conduction of the spatial surface of the current steel structure to be tested under the influence of environmental factors is obtained; A9. Based on the basic deformation samples in the basic deformation data set, the deformation of each connection point is predicted using the deformation conduction equation based on time evolution, and the deformation prediction error is calculated based on the deformation relationship verification data set; A10, determine whether the deformation prediction error is less than the error threshold, if so, return to predict the next basic deformation sample, otherwise, update the deformation conduction equation based on time evolution according to the deformation conduction of the current steel structure space surface under natural loss and the deformation conduction of the current steel structure space surface under the influence of environmental factors, and return to step A7, until the deformation prediction error of each sample in the deformation relationship training data set is less than the error threshold, and enter step A11; A11. The deformation conduction equation based on time evolution is used as the deformation conduction relationship on the spatial surface of the steel structure to be tested; A12. Return to step A4 until the deformation conduction relationship of all the spatial surfaces of the steel structure to be tested is obtained.

[0038] In this embodiment, each spatial surface has a deformation conduction relationship. This is because the mutual influence between long-distance connection points and support points in large steel structures is limited. Therefore, after the spatial surface is divided, only the data of the current spatial surface is extracted to solve the deformation relationship, which can ensure the accuracy of the deformation conduction relationship to the greatest extent.

[0039] In this embodiment, during the iteration process The value of is uncertain, that is, in each iteration, the total number of samples of deformation data that are not affected by the external environment and have different operation times can change. The larger the total number of samples, the better the final prediction accuracy will be; however, if the total number of samples is too large, the computational complexity will increase and the efficiency will decrease; therefore, setting it variable here can gradually balance accuracy and efficiency during the solution process. In addition, each sample is reselected.

[0040] The expression of the deformation conduction equation based on time evolution in A6 is:

[0041] in, is the deformation conduction equation based on time evolution, which represents the relationship between each reference point on the spatial surface of the steel structure to be tested and the Deformation conduction at each connection point; is the total number of benchmark points; For the The reference point Deformation influence coefficient of each connection point; For the Deformation of a reference point; For the The connection point and The number of adjacent connection points on the shortest connection path of the reference point; For the The adjacent connection point pair Deformation influence coefficient of each connection point; The reference points on the current steel structure space surface to be measured are Deformation conduction between adjacent connection points.

[0042] The expression for the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors in A8 is:

[0043] in, is the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors, which means the deformation conduction of a single step length per unit time under the influence of environmental factors; for Middle Single-step environmental loss conduction of samples; For operation time and The total number of samples in the deformation data sample set that are the same but affected by the external environment; for The sample number in ; for Middle In the sample The deformation of the connection points; for Middle In the sample Deformation of a reference point; For operation time The number of unit durations included.

[0044] The expression of the deformation prediction error in A9 is:

[0045] in, is the deformation prediction error; is the normalization function; is the deformation conduction equation based on time evolution, which represents the relationship between each reference point on the spatial surface of the steel structure to be tested and the Deformation conduction at each connection point; For the The actual deformation of the connection point.

[0046] The expression of the deformation conduction equation based on time evolution after update in A10 is:

[0047]

[0048] in, is the updated deformation conduction equation based on time evolution, which represents the updated relationship between each reference point on the spatial surface of the steel structure to be measured and the Deformation conduction at each connection point; After the update The reference point Deformation influence coefficient of each connection point; For the Deformation of a reference point; For the The connection point and The number of adjacent connection points on the shortest connection path of the reference point; After the update The adjacent connection point pair Deformation influence coefficient of each connection point; The reference points on the current steel structure space surface to be measured are Deformation conduction of adjacent connection points; For the The reference point Deformation influence coefficient of each connection point; For the The corresponding basic deformation sample in the deformation relationship verification dataset is The actual deformation of the connection points; For the The first The predicted deformation of each connection point; is the adjustment coefficient of deformation conduction under natural loss; is the adjustment coefficient of deformation conduction under the influence of environmental factors; is the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors, indicating the deformation conduction of a single step length per unit time under the influence of environmental factors; For the The adjacent connection point pair Deformation influence coefficient of each connection point; After the update The reference point Deformation influence coefficient of each connection point; For the The reference point Deformation influence coefficient of adjacent connection points; Adjust the step size for the influence coefficient of adjacent connection points.

[0049] In this embodiment, since the adjacent connection points have already been updated based on deformation conduction under environmental loss and deformation conduction under natural loss, and this update itself will be applied to the current connection point, the adjustment step size of the adjacent connection point influence coefficient here is actually a relatively small value.

[0050] The boundary points and temporary support points on the spatial surface of each steel structure to be tested are used as monitoring points, and the deformation data at each monitoring point is collected. The deformation assessment of the special-shaped steel structure is completed based on the deformation conduction relationship on the spatial surface of each steel structure to be tested. Specifically: Collect deformation data of each monitoring point, and based on the deformation data of each monitoring point, use the deformation conduction relationship on the spatial surface of each steel structure to be measured to obtain the deformation data of all connection points on the spatial surface of each steel structure to be measured; According to the deformation data of all connection points on the spatial surface of each steel structure to be tested, and based on the preset connection point deformation severity level threshold, the deformation assessment of the special-shaped steel structure is completed.

[0051] In this embodiment, the deformation prediction value of each connection point is obtained based on the scheme. According to the preset connection point deformation severity level threshold, it can be confirmed which connection points must be measured on the spot. This can greatly reduce the measurement workload and complete the preliminary estimation before quality inspection of special-shaped steel structures.

Claims

1. A deformation assessment method for special-shaped steel structures based on monitoring point data association, characterized in that: include: Obtain the three-dimensional coordinates of all temporary support points arranged on the special-shaped steel structure; Based on the three-dimensional coordinates of each temporary support point, the special-shaped steel structure is divided into spatial surfaces to obtain several spatial surfaces of the steel structure to be tested; Model the special-shaped steel structure, use simulation technology to simulate the response under different working conditions, and obtain the deformation conduction relationship on the spatial surface of each steel structure to be tested; The boundary points and temporary support points on the spatial surface of each steel structure to be tested are used as monitoring points, and the deformation data at each monitoring point is collected. The deformation assessment of the special-shaped steel structure is completed based on the deformation conduction relationship on the spatial surface of each steel structure to be tested.

2. According to claim 1, the method for evaluating deformation of special-shaped steel structures based on monitoring point data association is characterized in that: The spatial surface of the special-shaped steel structure is divided based on the three-dimensional coordinates of each temporary support point to obtain a number of spatial surfaces of the steel structure to be tested, specifically: Several boundary points are evenly set at the edge of the special-shaped steel structure, and the slope and three-dimensional coordinates of the section where each boundary point and temporary support point are located are obtained; According to the three-dimensional coordinates of each boundary point and temporary support point, the DBSCAN density clustering algorithm is used to cluster and obtain several dense clusters; According to the slope of the section where each boundary point and temporary support point are located, it is judged whether the maximum slope difference in each dense cluster is greater than the difference threshold. If so, the current dense cluster is marked as a sub-clustering class, otherwise, the current dense cluster is marked as a final cluster; For the sub-clustering, based on the slope of the section where each boundary point and temporary support point is located, the K-means clustering algorithm is used to cluster and obtain the cluster subset of the sub-clustering; Based on the final cluster and the cluster subsets of the sub-clustered clusters, spatial surface division is performed to obtain several spatial surfaces of the steel structure to be tested.

3. The deformation assessment method for special-shaped steel structures based on monitoring point data association according to claim 2 is characterized in that: Each of the steel structure space surfaces to be tested includes a space surface obtained based on the final cluster and cluster subset division and a closed space surface on the remaining part of the special-shaped steel structure after the final cluster and cluster subset division is completed.

4. According to claim 3, the method for evaluating deformation of special-shaped steel structures based on monitoring point data association is characterized in that: The constraints of the spatial surface obtained based on the final clusters and cluster subsets are: in, is the area of ​​the spatial surface obtained based on the final cluster or cluster subset division; is the maximum value function; For the selected points that serve as the boundaries of the shape; Reason The area of ​​a closed figure formed by connecting points; is the final cluster or cluster subset; for The complement of ; It is a point cloud set of the surface of the special-shaped steel structure included in the spatial surface obtained based on the final cluster or cluster subset division.

5. The deformation assessment method for special-shaped steel structures based on monitoring point data association according to claim 1 is characterized in that: The special-shaped steel structure is modeled, and the response under different working conditions is simulated by simulation technology to obtain the deformation conduction relationship on the spatial surface of each steel structure to be tested, which is specifically: A1. Construct a three-dimensional topological structure of each steel structure space surface to be tested according to the connection points and connection relationships of each steel structure space surface to be tested; A2. The boundary points and temporary support points on the three-dimensional topological structure of each steel structure space surface to be tested are taken as reference points, and the points other than the reference points are taken as connection points; A3. Model the special-shaped steel structure, use simulation technology to simulate the response under different working conditions, obtain the deformation data of each reference point and each connection point on the space surface of each steel structure to be tested under different working conditions, use the deformation data of each connection point on the space surface of each steel structure to be tested under different working conditions as the deformation relationship verification data set, and use the deformation data of each reference point on the space surface of each steel structure to be tested under different working conditions as the basic deformation data set; A4. Obtain the current spatial surface of the steel structure to be tested; A5. According to the three-dimensional topological structure of the current steel structure space surface to be measured, obtain the connection relationship between each connection point and the reference point: in, For the The connection relationship between the connection points and the reference point; For the Connection point to The connection step length of the reference points is the minimum number of edges that need to be passed from the connection point to the reference point on the three-dimensional topological structure of the current steel structure space surface to be measured; A6. Initialize the deformation conduction equation based on time evolution; A7. Based on the deformation relationship verification data set and the basic deformation data set, several groups of deformation data without external environmental influence and with different operation time are extracted, and based on the connection relationship between each connection point and the reference point, the deformation conduction under the natural loss of the current steel structure space surface to be tested is quantified: in, is the deformation conduction of the current steel structure space surface under natural loss, indicating the deformation conduction of a single step per unit time under natural loss; For the Single-step loss conduction of deformation data with different operation time without external environment influence; The deformation data without external environment influence and with different operation time are numbered and sorted in positive order from short to long operation time; is the total number of samples of deformation data without external environmental influence and with different operation time; The first group is single-step loss conduction of deformation data without external environmental influence and with different operation time; For the The operation time of a group of deformation data with different operation times and without external environmental influence; The operation time of the first group of deformation data without external environmental influence and with different operation times; is the total number of benchmark points; For the Connection point to The connection step length of the reference points; is the total number of connection points; For the The deformation data of the group without external environment influence and different operation time The deformation of the connection points; For the The deformation data of the group without external environment influence and different operation time Deformation of a reference point; A8. Extract the deformation relationship verification dataset and the basic deformation dataset. Group operation time and The same deformation data sample set but with external environmental influences, and the deformation conduction of the spatial surface of the current steel structure to be tested under the influence of environmental factors is obtained; A9. Based on the basic deformation samples in the basic deformation data set, the deformation of each connection point is predicted using the deformation conduction equation based on time evolution, and the deformation prediction error is calculated based on the deformation relationship verification data set; A10, determine whether the deformation prediction error is less than the error threshold, if so, return to predict the next basic deformation sample, otherwise, update the deformation conduction equation based on time evolution according to the deformation conduction of the current steel structure space surface under natural loss and the deformation conduction of the current steel structure space surface under the influence of environmental factors, and return to step A7, until the deformation prediction error of each sample in the deformation relationship training data set is less than the error threshold, and enter step A11; A11. The deformation conduction equation based on time evolution is used as the deformation conduction relationship on the spatial surface of the steel structure to be tested; A12. Return to step A4 until the deformation conduction relationship of all the spatial surfaces of the steel structure to be tested is obtained.

6. The method for evaluating deformation of special-shaped steel structures based on monitoring point data association according to claim 5 is characterized in that: The expression of the deformation conduction equation based on time evolution in A6 is: in, is the deformation conduction equation based on time evolution, which represents the relationship between each reference point on the spatial surface of the steel structure to be tested and the Deformation conduction at each connection point; is the total number of benchmark points; For the The reference point Deformation influence coefficient of each connection point; For the Deformation of a reference point; For the The connection point and The number of adjacent connection points on the shortest connection path of the reference point; For the The adjacent connection point pair Deformation influence coefficient of each connection point; The reference points on the current steel structure space surface to be measured are Deformation conduction between adjacent connection points.

7. The method for evaluating deformation of special-shaped steel structures based on monitoring point data association according to claim 5, characterized in that: The expression for the deformation conduction of the current steel structure space surface under the influence of environmental factors in A8 is: in, is the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors, indicating the deformation conduction of a single step length per unit time under the influence of environmental factors; for Middle Single-step environmental loss conduction of samples; For operation time and The total number of samples in the same deformation data sample set but with external environment influence; for The sample number in ; for Middle In the sample The deformation of the connection points; for Middle In the sample Deformation of a reference point; For operation time The number of unit durations included.

8. The method for evaluating deformation of special-shaped steel structures based on monitoring point data association according to claim 5, characterized in that: The expression of the deformation prediction error in A9 is: in, is the deformation prediction error; is the normalization function; is the deformation conduction equation based on time evolution, which represents the relationship between each reference point on the spatial surface of the steel structure to be tested and the Deformation conduction at each connection point; For the The actual deformation of the connection point.

9. The method for evaluating deformation of special-shaped steel structures based on monitoring point data association according to claim 5, characterized in that: The expression of the deformation conduction equation based on time evolution after update in A10 is: in, is the updated deformation conduction equation based on time evolution, which represents the updated relationship between each reference point on the spatial surface of the steel structure to be measured and the Deformation conduction at each connection point; After the update The reference point Deformation influence coefficient of each connection point; For the Deformation of a reference point; For the The connection point and The number of adjacent connection points on the shortest connection path of the reference point; After the update The adjacent connection point pair Deformation influence coefficient of each connection point; The reference points on the current steel structure space surface to be measured are Deformation conduction of adjacent connection points; For the The reference point Deformation influence coefficient of each connection point; For the The corresponding basic deformation sample in the deformation relationship verification dataset is The actual deformation of the connection points; For the The first The predicted deformation of each connection point; is the adjustment coefficient of deformation conduction under natural loss; is the adjustment coefficient of deformation conduction under the influence of environmental factors; is the deformation conduction of the spatial surface of the steel structure to be tested under the influence of environmental factors, indicating the deformation conduction of a single step length per unit time under the influence of environmental factors; For the The adjacent connection point pair Deformation influence coefficient of each connection point; After the update The reference point Deformation influence coefficient of each connection point; For the The reference point Deformation influence coefficient of adjacent connection points; Adjust the step size for the influence coefficient of adjacent connection points.

10. The method for evaluating deformation of special-shaped steel structures based on monitoring point data association according to claim 5, characterized in that: The boundary points and temporary support points on the spatial surface of each steel structure to be tested are used as monitoring points, and the deformation data at each monitoring point is collected. The deformation assessment of the special-shaped steel structure is completed based on the deformation conduction relationship on the spatial surface of each steel structure to be tested. Specifically: Collect deformation data of each monitoring point, and based on the deformation data of each monitoring point, use the deformation conduction relationship on the spatial surface of each steel structure to be measured to obtain the deformation data of all connection points on the spatial surface of each steel structure to be measured; According to the deformation data of all connection points on the spatial surface of each steel structure to be tested, and based on the preset connection point deformation severity level threshold, the deformation assessment of the special-shaped steel structure is completed.

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