Photovoltaic pile foundation and support seismic performance simulation analysis system based on photovoltaic power station

Abstract

The present invention belongs to the technical field of photovoltaic pile foundation and bracket seismic performance simulation, and specifically discloses a photovoltaic pile foundation and bracket seismic performance simulation analysis system based on a photovoltaic power station, the system comprising: a pile foundation deformation analysis module responsible for monitoring the deformation degree and position of the pile foundation under an earthquake, and evaluating the deformation deviation coefficient; a pile foundation stress analysis module collecting stress values, analyzing stress influence coefficients; a pile foundation seismic performance analysis module drawing a trend chart based on the above coefficients, and evaluating the seismic performance of the pile foundation. The bracket seismic performance analysis module detects cracks and displacement deformations, and analyzes the bracket cracking index and seismic performance. Finally, the seismic performance qualified feedback module comprehensively evaluates the seismic performance of the photovoltaic pile foundation and bracket, determines whether it is qualified, and feeds back the results to the platform. The system provides a comprehensive evaluation method for the seismic safety of photovoltaic projects, and provides strong support for the seismic design and evaluation of photovoltaic projects.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic pile foundation and bracket seismic performance simulation, and relates to a photovoltaic pile foundation and bracket seismic performance simulation analysis system based on a photovoltaic power station. Background Art

[0002] The photovoltaic pile foundation and support seismic performance simulation analysis system analyzes the seismic performance of photovoltaic pile foundations and supports by simulating the impact of natural disasters such as earthquakes on photovoltaic power generation facilities. The system combines multidisciplinary knowledge such as structural mechanics, earthquake engineering, and material science, and uses advanced simulation technology and data analysis to provide a scientific basis for the design, construction, and maintenance of photovoltaic power generation facilities.

[0003] Although the existing simulation and analysis system for the seismic performance of photovoltaic pile foundations and brackets meets certain needs, it still has limitations, which are specifically reflected in: 1. The existing technology is often unable to obtain the deformation deviation degree and stress influence degree of the photovoltaic pile foundation in real time, resulting in the inability to identify the deformation weak links and stress concentration areas of the photovoltaic pile foundation. Due to the inability to identify the deformation weak links and stress concentration areas, the photovoltaic pile foundation may experience severe deformation or stress overload in these areas during an earthquake, increasing the risk of structural damage or even collapse, thereby posing a threat to people's lives and property safety.

[0004] 2. Existing technologies often only focus on the displacement or structural deformation of the support during an earthquake, and ignore indicators such as the crack width, crack length and number of cracks that can directly reflect the structural damage. This makes it impossible to accurately assess the extent of damage to the support, and leads to a lack of specificity in reinforcement and repair work. Unnecessary reinforcement measures may be taken, increasing costs; or insufficient reinforcement measures may fail to effectively prevent the support from failing during an earthquake. Summary of the invention

[0005] In view of this, in order to solve the problems raised in the above background technology, a simulation analysis system for the seismic performance of photovoltaic pile foundations and brackets based on photovoltaic power stations is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions: The present invention provides a photovoltaic pile foundation and bracket seismic performance simulation analysis system based on a photovoltaic power station, including: a pile foundation deformation analysis module: used to collect the deformation degree and position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, and analyze the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level.

[0007] Pile foundation stress analysis module: used to collect the stress values ​​of the soil at each collection point of the photovoltaic pile foundation under each earthquake level, and analyze the stress influence coefficient of the soil on the photovoltaic pile foundation under each earthquake level.

[0008] Pile foundation seismic performance analysis module: used to draw the change trend diagram of the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation according to the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation under each earthquake level, and then analyze the seismic performance index ψ of the photovoltaic pile foundation under each earthquake level d , where d represents the number corresponding to the dth earthquake level, d = 1, 2, 3, ...D.

[0009] Support seismic performance analysis module: used to collect the crack width, crack length and number of cracks at each part of the support under each earthquake level, analyze the cracking index of the support under each earthquake level, and then analyze the seismic performance index φ of the support under each earthquake level through the collected displacement and structural deformation degree of each part of the support under each earthquake level d .

[0010] Seismic performance qualified feedback module: It is used to analyze the comprehensive seismic performance index of photovoltaic pile foundation and bracket through the seismic performance index of photovoltaic pile foundation and bracket under each earthquake level, and then judge whether the seismic performance of photovoltaic pile foundation and bracket is qualified, and feedback the judgment result to the platform.

[0011] Database: used to store the allowable deformation degree corresponding to each material type under each earthquake level, the standard profile corresponding to the geometric shape of the photovoltaic pile foundation, the allowable stress value of each soil type and the initial position coordinates of each collection point of the photovoltaic pile foundation.

[0012] Preferably, the analyzing the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level includes: extracting the allowable deformation degree corresponding to each material type under each earthquake level from a database.

[0013] The material type of the photovoltaic pile foundation is obtained through the material label of the photovoltaic pile foundation.

[0014] According to the material type of the photovoltaic pile foundation, the allowable deformation degree corresponding to the material type of the photovoltaic pile foundation under each earthquake level is screened out.

[0015] Various collection points are arranged on the surface of the photovoltaic pile foundation, and the post-earthquake position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level are obtained through ground-based radar.

[0016] The initial position coordinates of each collection point of the photovoltaic pile foundation are extracted from the database.

[0017] The initial position coordinates of each collection point of the photovoltaic pile foundation and the position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level after the earthquake are substituted into the distance formula to obtain the distance of each collection point of the photovoltaic pile foundation under each earthquake level, which is used as the deformation degree of each collection point of the photovoltaic pile foundation under each earthquake level.

[0018] The deformation degree corresponding to each collection point of the photovoltaic pile foundation under each earthquake level is compared with the allowable deformation degree corresponding to the material type of the photovoltaic pile foundation under each earthquake level, and the deformation degree difference of the photovoltaic pile foundation under each earthquake level is obtained, which is recorded as △B d .

[0019] The standard contour corresponding to the geometric shape of the photovoltaic pile foundation is extracted from the database.

[0020] According to the position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, the contour corresponding to the geometric shape of the photovoltaic pile foundation under each earthquake level is constructed by interpolation method. The contour corresponding to the geometric shape of the photovoltaic pile foundation under each earthquake level is compared with the standard contour corresponding to the geometric shape by least squares fitting method, and the degree of deviation of the geometric contour of the photovoltaic pile foundation under each earthquake level is obtained, which is recorded as △L d .

[0021] Analysis of the deformation deviation coefficient Z of photovoltaic pile foundation under various earthquake levels d , Where △B′ d represents the reference deformation degree difference of the photovoltaic pile foundation under the set d-th earthquake level, α1 represents the weight corresponding to the set deformation degree difference, α2 represents the weight corresponding to the set geometric profile deviation degree, and α1+α2=1.

[0022] Preferably, the analyzing the influence coefficient of soil stress on the photovoltaic pile foundation under each earthquake level includes: extracting the allowable stress value of each soil type under each earthquake level from a database.

[0023] According to the soil type, the allowable stress value of the soil type under each earthquake level is screened and recorded as T d ″.

[0024] The stress value of the soil at each collection point of the photovoltaic pile foundation under each earthquake level is obtained through the stress monitoring equipment, and then the average stress value of the photovoltaic pile foundation under each earthquake level is obtained through the average formula, which is used as the stress value of the photovoltaic pile foundation under each earthquake level, recorded as T d .

[0025] Analysis of the influence coefficient γ of soil stress on photovoltaic pile foundation under various earthquake levels d ,

[0026] Preferably, the drawing of the variation trend graph of the deformation deviation coefficient and the stress influence coefficient of the photovoltaic pile foundation comprises: constructing a coordinate system with each earthquake level as the horizontal coordinate and the deformation deviation coefficient as the vertical coordinate to obtain the variation trend graph of the deformation deviation coefficient of the photovoltaic pile foundation.

[0027] A coordinate system with each earthquake level as the horizontal coordinate and the stress influence coefficient as the vertical coordinate is constructed to obtain a changing trend diagram of the stress influence coefficient of the photovoltaic pile foundation.

[0028] Preferably, the analysis of the seismic performance index of the photovoltaic pile foundation under each earthquake level includes: comparing the change trend diagram of the deformation deviation coefficient of the photovoltaic pile foundation with the set standard change trend diagram of the deformation deviation coefficient of the photovoltaic pile foundation, obtaining the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the excess part, recording the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the remaining part as 0, and obtaining the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level by statistics, which is recorded as △Q d .

[0029] According to the analysis method of the difference of deformation deviation coefficient of photovoltaic pile foundation under each earthquake level, the difference of stress influence coefficient of photovoltaic pile foundation under each earthquake level is obtained in the same way, which is recorded as △Y d .

[0030] Analysis of the seismic performance index ψ of photovoltaic pile foundations under various earthquake levels d , Where △Q′ d Indicates the reference deformation deviation coefficient difference of the photovoltaic pile foundation under the set dth earthquake level, △Y d ′ represents the reference stress influence coefficient difference of the photovoltaic pile foundation under the set dth earthquake level.

[0031] Preferably, the analysis of the cracking index of the support under each earthquake level includes: collecting the crack width and crack length of each part of the support under each earthquake level by a laser scanner, which are respectively denoted as η di and di , where i represents the number corresponding to the i-th part, i=1,2,3,...I.

[0032] The images of each part of the support under each earthquake level are obtained through the camera, and then the number of cracks in each part of the support under each earthquake level is obtained through the image recognition algorithm, which is recorded as C di .

[0033] Analysis of the cracking index K of the support under each earthquake level d : Wherein η0 represents the set reference crack width, ι0 represents the set reference crack length, I represents the total number of parts of the bracket, δ1 represents the weight corresponding to the set crack width, δ2 represents the weight corresponding to the set crack length, δ3 represents the weight corresponding to the set number of cracks, and δ1+δ2+δ3=1.

[0034] Preferably, the acquisition of displacements and structural deformations of various parts of the support at each earthquake level includes: acquiring displacements of various parts of the support at each earthquake level by means of a laser rangefinder, substituting the displacements of various parts of the support at each earthquake level into an average formula, obtaining an average displacement of the support at each earthquake level, and using the average displacement as the overall displacement of the support at each earthquake level, recorded as J d .

[0035] The degree of structural deformation of each part of the support under each earthquake level is collected by laser scanner, and the degree of structural deformation of each part of the support under each earthquake level is compared to obtain the maximum structural deformation degree of the support under each earthquake level, which is used as the structural deformation degree of the support under each earthquake level, recorded as B d .

[0036] Preferably, the specific formula for analyzing the seismic performance index of the support under each earthquake level is: where J′ d represents the allowable overall displacement of the support under the set dth earthquake level, K′ d It represents the allowable cracking index of the support under the set dth earthquake level, B′ d represents the allowable structural deformation degree of the support under the set d-th earthquake level, ε1 represents the weight corresponding to the set overall displacement difference of the support, ε2 represents the weight corresponding to the set cracking index difference of the support, ε3 represents the weight corresponding to the set structural deformation degree difference of the support, and ε1+ε2+ε3=1

[0037] Preferably, the specific formula for analyzing the comprehensive index of seismic performance of photovoltaic pile foundations and brackets is: Where D represents the total number of earthquake magnitudes, χ d represents the weight factor corresponding to the seismic performance index of the photovoltaic pile foundation under the set d-th earthquake level, χ′ d It represents the weight factor corresponding to the seismic performance index of the support under the set d-th earthquake level, and χ1+χ2=1.

[0038] Preferably, the determination of whether the seismic performance of the photovoltaic pile foundation and the bracket is qualified includes: comparing the comprehensive index of the seismic performance of the photovoltaic pile foundation and the bracket with a preset comprehensive index threshold of the seismic performance of the photovoltaic pile foundation and the bracket; if the comprehensive index of the seismic performance of the photovoltaic pile foundation and the bracket is greater than or equal to the preset comprehensive index threshold of the seismic performance of the photovoltaic pile foundation and the bracket, the seismic performance of the photovoltaic pile foundation and the bracket is qualified; if the comprehensive index of the seismic performance of the photovoltaic pile foundation and the bracket is less than the preset comprehensive index threshold of the seismic performance of the photovoltaic pile foundation and the bracket, the seismic performance of the photovoltaic pile foundation and the bracket is unqualified.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention collects the deformation degree and position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, analyzes the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level, and can identify the deformation weak links of the photovoltaic pile foundation under different earthquake levels, providing designers with a basis for optimizing design and reinforcement, which is helpful to improve the seismic performance of the photovoltaic pile foundation, and can timely discover and solve potential safety hazards, thereby reducing the risk of damage and failure caused by earthquakes.

[0040] (2) The present invention collects the stress values ​​of the soil at each collection point of the photovoltaic pile foundation under each earthquake level, analyzes the stress influence coefficient of the soil on the photovoltaic pile foundation under each earthquake level, and can reveal the weak links and stress concentration areas of the photovoltaic pile foundation under the action of the earthquake. By timely discovering these potential risk points, corresponding measures can be taken to reinforce or improve them, thereby avoiding serious damage in the earthquake.

[0041] (3) The present invention draws a changing trend graph of the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation according to the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation under each earthquake level, and then analyzes the seismic performance index of the photovoltaic pile foundation under each earthquake level. It can intuitively display the dynamic changes of the deformation deviation and stress influence of the photovoltaic pile foundation under different earthquake levels. This intuitive display method helps to quickly understand the seismic performance of the photovoltaic pile foundation and identify its performance under the action of an earthquake. The analysis results of the seismic performance index of the photovoltaic pile foundation can provide a scientific basis for decision makers and help them formulate more scientific and reasonable reinforcement and maintenance plans.

[0042] (4) The present invention collects crack width, crack length and number of cracks at various parts of the support under various earthquake levels, analyzes the cracking index of the support under various earthquake levels, and then analyzes the seismic performance index of the support under various earthquake levels through the collected displacement and structural deformation degree of various parts of the support under various earthquake levels. This can accurately evaluate the seismic performance of the support under different earthquake levels, help understand the actual performance of the support under the action of an earthquake, provide data support for improving the design and reinforcement, and can timely discover potential faults and damages of the support, which helps to take necessary measures at an early stage to prevent further expansion of faults, reduce safety risks caused by earthquakes, and reduce damage caused by earthquakes.

[0043] (5) The present invention analyzes the comprehensive seismic performance index of the photovoltaic pile foundation and the bracket through the seismic performance index of the photovoltaic pile foundation and the seismic performance index of the bracket under each earthquake level, and then determines whether the seismic performance of the photovoltaic pile foundation and the bracket is qualified, and feeds the judgment result back to the platform, which can more accurately evaluate the seismic performance of the photovoltaic pile foundation and the bracket, help identify potential seismic risks, provide a scientific basis for design optimization and reinforcement, and can timely discover and resolve potential safety hazards, reduce damage and failures caused by earthquakes, and improve the operational safety of photovoltaic power generation facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 It is a schematic diagram of the connection of each module of the system of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 As shown, the present invention provides a photovoltaic pile foundation and support seismic performance simulation analysis system based on a photovoltaic power station, including: a pile foundation deformation analysis module, a pile foundation stress analysis module, a pile foundation seismic performance analysis module, a support seismic performance analysis module, a seismic performance qualified feedback module and a database.

[0048] The pile foundation stress analysis module is respectively connected to the pile foundation deformation analysis module, the pile foundation seismic performance analysis module and the database, the pile foundation seismic performance analysis module is respectively connected to the pile foundation stress analysis module and the seismic performance qualified feedback module, the seismic performance qualified feedback module is respectively connected to the pile foundation seismic performance analysis module and the bracket seismic performance analysis module, and the database is respectively connected to the pile foundation deformation analysis module and the pile foundation stress analysis module.

[0049] The pile foundation deformation analysis module is used to collect the deformation degree and position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, and analyze the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level.

[0050] Furthermore, the analysis of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level includes: extracting the allowable deformation degree corresponding to each material type under each earthquake level from a database.

[0051] The material type of the photovoltaic pile foundation is obtained through the material label of the photovoltaic pile foundation.

[0052] According to the material type of the photovoltaic pile foundation, the allowable deformation degree corresponding to the material type of the photovoltaic pile foundation under each earthquake level is screened out.

[0053] Various collection points are arranged on the surface of the photovoltaic pile foundation, and the post-earthquake position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level are obtained through ground-based radar.

[0054] The initial position coordinates of each collection point of the photovoltaic pile foundation are extracted from the database.

[0055] The initial position coordinates of each collection point of the photovoltaic pile foundation and the position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level after the earthquake are substituted into the distance formula to obtain the distance of each collection point of the photovoltaic pile foundation under each earthquake level, which is used as the deformation degree of each collection point of the photovoltaic pile foundation under each earthquake level.

[0056] The deformation degree corresponding to each collection point of the photovoltaic pile foundation under each earthquake level is compared with the allowable deformation degree corresponding to the material type of the photovoltaic pile foundation under each earthquake level, and the deformation degree difference of the photovoltaic pile foundation under each earthquake level is obtained, which is recorded as △B d .

[0057] The standard contour corresponding to the geometric shape of the photovoltaic pile foundation is extracted from the database.

[0058] According to the position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, the contour corresponding to the geometric shape of the photovoltaic pile foundation under each earthquake level is constructed by interpolation method. The contour corresponding to the geometric shape of the photovoltaic pile foundation under each earthquake level is compared with the standard contour corresponding to the geometric shape by least squares fitting method, and the degree of deviation of the geometric contour of the photovoltaic pile foundation under each earthquake level is obtained, which is recorded as △L d .

[0059] Analysis of the deformation deviation coefficient Z of photovoltaic pile foundation under various earthquake levels d , Where △B′ d represents the reference deformation degree difference of the photovoltaic pile foundation under the set d-th earthquake level, α1 represents the weight corresponding to the set deformation degree difference, α2 represents the weight corresponding to the set geometric profile deviation degree, and α1+α2=1.

[0060] As a preferred embodiment, the types of materials include: steel and concrete.

[0061] The geometric shapes of the photovoltaic pile foundation include: circular, square and horseshoe.

[0062] The present invention collects the deformation degree and position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, analyzes the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level, and can identify the deformation weak links of the photovoltaic pile foundation under different earthquake levels, providing designers with a basis for optimized design and reinforcement, which is helpful to improve the seismic performance of the photovoltaic pile foundation, and can timely discover and resolve potential safety hazards, reducing the risk of damage and failure caused by earthquakes.

[0063] The pile foundation stress analysis module is used to collect the stress values ​​of the soil at each collection point of the photovoltaic pile foundation under each earthquake level, and analyze the stress influence coefficient of the soil on the photovoltaic pile foundation under each earthquake level.

[0064] Furthermore, the analysis of the influence coefficient of soil stress on the photovoltaic pile foundation under each earthquake level includes: extracting the allowable stress value of each soil type under each earthquake level from a database.

[0065] According to the soil type, the allowable stress value of the soil type under each earthquake level is screened and recorded as T d ″.

[0066] The stress value of the soil at each collection point of the photovoltaic pile foundation under each earthquake level is obtained through the stress monitoring equipment, and then the average stress value of the photovoltaic pile foundation under each earthquake level is obtained through the average formula, which is used as the stress value of the photovoltaic pile foundation under each earthquake level, recorded as T d .

[0067] Analysis of the influence coefficient γ of soil stress on photovoltaic pile foundation under various earthquake levels d ,

[0068] As a preferred embodiment, the soil types include: sandy soil, clay soil and loam.

[0069] The present invention collects the stress values ​​of the soil at each collection point of the photovoltaic pile foundation under each earthquake level, analyzes the stress influence coefficient of the soil on the photovoltaic pile foundation under each earthquake level, and can reveal the weak links and stress concentration areas of the photovoltaic pile foundation under the action of the earthquake. By timely discovering these potential risk points, corresponding measures can be taken to reinforce or improve them, thereby avoiding serious damage in the earthquake.

[0070] The pile foundation seismic performance analysis module is used to draw a trend chart of the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation according to the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation under each earthquake level, and then analyze the seismic performance index ψ of the photovoltaic pile foundation under each earthquake level.d , where d represents the number corresponding to the dth earthquake level, d = 1, 2, 3, ...D.

[0071] Furthermore, the drawing of the variation trend graph of the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation includes: constructing a coordinate system with each earthquake level as the horizontal coordinate and the deformation deviation coefficient as the vertical coordinate to obtain the variation trend graph of the deformation deviation coefficient of the photovoltaic pile foundation.

[0072] A coordinate system with each earthquake level as the horizontal coordinate and the stress influence coefficient as the vertical coordinate is constructed to obtain a changing trend diagram of the stress influence coefficient of the photovoltaic pile foundation.

[0073] Furthermore, the analysis of the seismic performance index of the photovoltaic pile foundation under each earthquake level includes: comparing the change trend diagram of the deformation deviation coefficient of the photovoltaic pile foundation with the set standard change trend diagram of the deformation deviation coefficient of the photovoltaic pile foundation, obtaining the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the excess part, recording the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the remaining part as 0, and obtaining the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level by statistics, which is recorded as △Q d .

[0074] According to the analysis method of the difference of deformation deviation coefficient of photovoltaic pile foundation under each earthquake level, the difference of stress influence coefficient of photovoltaic pile foundation under each earthquake level is obtained in the same way, which is recorded as △Y d .

[0075] As a preferred embodiment, the specific process of obtaining the difference in deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level is: according to the changing trend graph of the deformation deviation coefficient of the photovoltaic pile foundation and the set standard changing trend graph of the deformation deviation coefficient of the photovoltaic pile foundation, obtain the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level in the changing trend graph of the deformation deviation coefficient of the photovoltaic pile foundation that is higher than the set standard changing trend graph of the deformation deviation coefficient of the photovoltaic pile foundation, and record it as the excess part of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level.

[0076] The standard deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level that exceeds the standard change trend diagram of the deformation deviation coefficient of the photovoltaic pile foundation is screened out.

[0077] The deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the excess part is subtracted from the standard deformation deviation coefficient of the photovoltaic pile foundation under the corresponding level to obtain the difference between the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the excess part and the standard deformation deviation coefficient of the photovoltaic pile foundation under the corresponding level, which is recorded as the stress influence coefficient difference of the photovoltaic pile foundation under each earthquake level.

[0078] Analysis of the seismic performance index ψ of photovoltaic pile foundations under various earthquake levels d , Where △Q′ d Indicates the reference deformation deviation coefficient difference of the photovoltaic pile foundation under the set dth earthquake level, △Y d ′ represents the reference stress influence coefficient difference of the photovoltaic pile foundation under the set dth earthquake level.

[0079] The present invention draws a changing trend graph of the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation according to the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation under each earthquake level, and then analyzes the seismic performance index of the photovoltaic pile foundation under each earthquake level. It can intuitively display the dynamic changes of the deformation deviation and stress influence of the photovoltaic pile foundation under different earthquake levels. This intuitive display method helps to quickly understand the seismic performance of the photovoltaic pile foundation and identify its performance under earthquake. The analysis results of the seismic performance index of the photovoltaic pile foundation can provide a scientific basis for decision makers, helping them to formulate more scientific and reasonable reinforcement and maintenance plans.

[0080] The support seismic performance analysis module is used to collect the crack width, crack length and number of cracks at each part of the support under each earthquake level, analyze the cracking index of the support under each earthquake level, and then analyze the seismic performance index φ of the support under each earthquake level through the collected displacement and structural deformation degree of each part of the support under each earthquake level. d .

[0081] Furthermore, the analysis of the cracking index of the support under each earthquake level includes: collecting the crack width and crack length of each part of the support under each earthquake level by a laser scanner, which are respectively denoted as η di and di , where i represents the number corresponding to the i-th part, i=1,2,3,...I.

[0082] The images of each part of the support under each earthquake level are obtained through the camera, and then the number of cracks in each part of the support under each earthquake level is obtained through the image recognition algorithm, which is recorded as C di .

[0083] Analysis of the cracking index K of the support under each earthquake level d : Wherein η0 represents the set reference crack width, ι0 represents the set reference crack length, I represents the total number of parts of the bracket, δ1 represents the weight corresponding to the set crack width, δ2 represents the weight corresponding to the set crack length, δ3 represents the weight corresponding to the set number of cracks, and δ1+δ2+δ3=1.

[0084] As a preferred embodiment, δ1 can be set to 0.3, δ2 can be set to 0.4, and δ3 can be set to 0.3. The number of cracks is an intuitive indicator for evaluating the degree of damage to the structure. The presence of multiple cracks usually means that the structure may have suffered extensive damage. The crack width is a key indicator for evaluating the impact of cracks on the performance of the structure. Wider cracks often mean that the performance of the structure is more seriously degraded, which may lead to problems such as reduced bearing capacity and durability of the structure. The crack length is also one of the important indicators for evaluating the impact of cracks on the performance of the structure. Longer cracks may mean that the damage to the structure is more serious and requires more attention and treatment. Therefore, the weight corresponding to the crack width is greater than the weights corresponding to the number of cracks and the crack length.

[0085] Furthermore, the acquisition of displacements and structural deformations of various parts of the support at each earthquake level includes: acquiring displacements of various parts of the support at each earthquake level by means of a laser rangefinder, substituting the displacements of various parts of the support at each earthquake level into an average formula, and obtaining an average displacement of the support at each earthquake level, which is used as the overall displacement of the support at each earthquake level, and is recorded as J d .

[0086] As a preferred embodiment, the specific process of collecting the displacement of each part of the support under each earthquake level by using a laser rangefinder is: collecting the initial center position and the center position after the earthquake of each part of the support under each earthquake level by using a laser rangefinder, comparing the initial center position of each part of the support under each earthquake level with the center position after the earthquake, and obtaining the displacement of each part of the support under each earthquake level.

[0087] The degree of structural deformation of each part of the support under each earthquake level is collected by laser scanner, and the degree of structural deformation of each part of the support under each earthquake level is compared to obtain the maximum structural deformation degree of the support under each earthquake level, which is used as the structural deformation degree of the support under each earthquake level, recorded as B d .

[0088] As a preferred embodiment, the specific process of collecting the degree of structural deformation of each part of the support under each earthquake level by using a laser scanner is: collecting the initial contour area and post-earthquake contour area of ​​each part of the support under each earthquake level by using a laser scanner, subtracting the initial contour area from the post-earthquake contour area of ​​each part of the support under each earthquake level, and obtaining the difference between the post-earthquake contour area and the initial contour area of ​​each part of the support under each earthquake level.

[0089] The difference between the post-earthquake contour area and the initial contour area of ​​each part of the support under each earthquake level is compared with the initial contour area to obtain the ratio of the difference between the post-earthquake contour area and the initial contour area of ​​each part of the support under each earthquake level to the initial contour area, which is recorded as the structural deformation degree of each part of the support under each earthquake level.

[0090] Furthermore, the specific formula for analyzing the seismic performance index of the support under each earthquake level is: where J′ d represents the allowable overall displacement of the support under the set dth earthquake level, K′ d It represents the allowable cracking index of the support under the set dth earthquake level, B′ d represents the allowable structural deformation degree of the support under the set d-th earthquake level, ε1 represents the weight corresponding to the set overall displacement difference of the support, ε2 represents the weight corresponding to the set cracking index difference of the support, ε3 represents the weight corresponding to the set structural deformation degree difference of the support, and ε1+ε2+ε3=1

[0091] As a preferred embodiment, ε1 can be set to 0.4, ε2 can be set to 0.3, and ε3 can be set to 0.3. The overall displacement is an important indicator for evaluating the response of the bracket under external forces such as earthquakes. A larger displacement may mean that the bracket has undergone significant deformation. Cracking is a common form of bracket damage, especially under extreme loads such as earthquakes. The cracking index can quantify the degree of cracking of the structure, thereby evaluating the damage state of the bracket. The degree of structural deformation is another important indicator for evaluating the response of the structure under load. Excessive deformation may cause the structure to lose stability or functionality. Therefore, the weight corresponding to the overall displacement difference of the bracket is greater than the weights corresponding to the difference in the cracking index and the difference in the degree of structural deformation of the bracket.

[0092] The present invention collects crack widths, crack lengths and numbers of cracks at various parts of the support under various earthquake levels, analyzes the cracking index of the support under various earthquake levels, and then analyzes the seismic performance index of the support under various earthquake levels through the collected displacements and structural deformation degrees of various parts of the support under various earthquake levels. This can accurately evaluate the seismic performance of the support under different earthquake levels, help understand the actual performance of the support under earthquakes, provide data support for improved design and reinforcement, and timely discover potential faults and damages of the support, which helps to take necessary measures at an early stage to prevent further expansion of faults, reduce safety risks caused by earthquakes, and reduce damage caused by earthquakes.

[0093] The seismic performance qualified feedback module is used to analyze the comprehensive seismic performance index of the photovoltaic pile foundation and the bracket through the seismic performance index of the photovoltaic pile foundation and the seismic performance index of the bracket under each earthquake level, and then determine whether the seismic performance of the photovoltaic pile foundation and the bracket is qualified, and feed back the judgment result to the platform.

[0094] Preferably, the specific formula for analyzing the comprehensive index of seismic performance of photovoltaic pile foundations and brackets is: Where D represents the total number of earthquake magnitudes, χ d represents the weight factor corresponding to the seismic performance index of the photovoltaic pile foundation under the set d-th earthquake level, χ′ d It represents the weight factor corresponding to the seismic performance index of the support under the set d-th earthquake level, and χ1+χ2=1.

[0095] As a preferred embodiment, the χ1 can be set to 0.6, and χ2 can be set to 0.4. The photovoltaic pile foundation is the foundation of the photovoltaic power generation facility, bearing the weight of the entire photovoltaic power generation facility, including photovoltaic panels, brackets, cables, etc. Therefore, the seismic performance of the photovoltaic pile foundation is crucial to the stability and safety of the entire photovoltaic power generation facility. The bracket is a component in the photovoltaic power generation facility used to support the photovoltaic panels. Although it does not directly bear the weight of the entire photovoltaic power generation facility, its stability and seismic performance are equally important for the safe operation of the photovoltaic panels. Therefore, the weight factor corresponding to the seismic performance index of the photovoltaic pile foundation is greater than the weight factor corresponding to the seismic performance index of the bracket.

[0096] Furthermore, the determination of whether the seismic performance of the photovoltaic pile foundation and the bracket is qualified includes: comparing the comprehensive index of the seismic performance of the photovoltaic pile foundation and the bracket with a preset comprehensive index threshold of the seismic performance of the photovoltaic pile foundation and the bracket; if the comprehensive index of the seismic performance of the photovoltaic pile foundation and the bracket is greater than or equal to the preset comprehensive index threshold of the seismic performance of the photovoltaic pile foundation and the bracket, the seismic performance of the photovoltaic pile foundation and the bracket is qualified; if the comprehensive index of the seismic performance of the photovoltaic pile foundation and the bracket is less than the preset comprehensive index threshold of the seismic performance of the photovoltaic pile foundation and the bracket, the seismic performance of the photovoltaic pile foundation and the bracket is unqualified.

[0097] The present invention analyzes the comprehensive seismic performance index of the photovoltaic pile foundation and the bracket through the seismic performance index of the photovoltaic pile foundation and the seismic performance index of the bracket under each earthquake level, and then determines whether the seismic performance of the photovoltaic pile foundation and the bracket is qualified, and feeds the judgment result back to the platform, which can more accurately evaluate the seismic performance of the photovoltaic pile foundation and the bracket, help identify potential seismic risks, provide a scientific basis for design optimization and reinforcement, and can timely discover and resolve potential safety hazards, reduce damage and failures caused by earthquakes, and improve the operation safety of photovoltaic power generation facilities.

[0098] Database: used to store the allowable deformation degree corresponding to each material type under each earthquake level, the standard profile corresponding to the geometric shape of the photovoltaic pile foundation, the allowable stress value of each soil type and the initial position coordinates of each collection point of the photovoltaic pile foundation.

[0099] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. A photovoltaic pile foundation and support seismic performance simulation analysis system based on a photovoltaic power station, characterized by: include: Pile foundation deformation analysis module: used to collect the deformation degree and position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, and analyze the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level; Pile foundation stress analysis module: used to collect the stress values ​​of the soil at each collection point of the photovoltaic pile foundation under each earthquake level, and analyze the stress influence coefficient of the soil on the photovoltaic pile foundation under each earthquake level; Pile foundation seismic performance analysis module: used to draw the change trend diagram of the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation according to the deformation deviation coefficient and stress influence coefficient of the photovoltaic pile foundation under each earthquake level, and then analyze the seismic performance index ψ of the photovoltaic pile foundation under each earthquake level d , where d represents the number corresponding to the d-th earthquake level, d = 1, 2, 3, ... D, and D represents the total number of earthquake levels; Support seismic performance analysis module: used to collect the crack width, crack length and number of cracks at each part of the support under each earthquake level, analyze the cracking index of the support under each earthquake level, and then analyze the seismic performance index φ of the support under each earthquake level through the collected displacement and structural deformation degree of each part of the support under each earthquake level d ; Seismic performance qualified feedback module: used to analyze the comprehensive seismic performance index of photovoltaic pile foundation and bracket through the seismic performance index of photovoltaic pile foundation and bracket under various earthquake levels, and then judge whether the seismic performance of photovoltaic pile foundation and bracket is qualified, and feedback the judgment result to the platform; Database: used to store the allowable deformation degree corresponding to each material type under each earthquake level, the standard profile corresponding to the geometric shape of the photovoltaic pile foundation, the allowable stress value of each soil type and the initial position coordinates of each collection point of the photovoltaic pile foundation.

2. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 1 is characterized in that: The analysis of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level includes: Extract the allowable deformation degree corresponding to each material type under each earthquake level from the database; Obtain the material type of the photovoltaic pile foundation through the material label of the photovoltaic pile foundation; According to the material type of the photovoltaic pile foundation, the allowable deformation degree corresponding to the material type of the photovoltaic pile foundation under each earthquake level is screened; Various collection points are arranged on the surface of the photovoltaic pile foundation, and the position coordinates of each collection point of the photovoltaic pile foundation after the earthquake under various earthquake levels are obtained by ground-based radar; Extract the initial position coordinates of each collection point of the photovoltaic pile foundation from the database; Substituting the initial position coordinates of each collection point of the photovoltaic pile foundation and the position coordinates of each collection point of the photovoltaic pile foundation at each earthquake level after the earthquake into the distance formula, the distance of each collection point of the photovoltaic pile foundation at each earthquake level is obtained, which is used as the deformation degree of each collection point of the photovoltaic pile foundation at each earthquake level; The deformation degree corresponding to each collection point of the photovoltaic pile foundation under each earthquake level is compared with the allowable deformation degree corresponding to the material type of the photovoltaic pile foundation under each earthquake level, and the deformation degree difference of the photovoltaic pile foundation under each earthquake level is obtained, which is recorded as ΔB d ; Extracting the standard contour corresponding to the geometric shape of the photovoltaic pile foundation from the database; According to the position coordinates of each collection point of the photovoltaic pile foundation under each earthquake level, the contour corresponding to the geometric shape of the photovoltaic pile foundation under each earthquake level is constructed by interpolation method. The contour corresponding to the geometric shape of the photovoltaic pile foundation under each earthquake level is compared with the standard contour corresponding to the geometric shape by least squares fitting method, and the degree of deviation of the geometric contour of the photovoltaic pile foundation under each earthquake level is obtained, which is recorded as ΔL d ; Analysis of the deformation deviation coefficient Z of photovoltaic pile foundation under various earthquake levels d , Where ΔB′ d represents the reference deformation degree difference of the photovoltaic pile foundation under the set d-th earthquake level, α1 represents the weight corresponding to the set deformation degree difference, α2 represents the weight corresponding to the set geometric profile deviation degree, and α1+α2=1.

3. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 2 is characterized in that: The analysis of the influence coefficient of soil stress on photovoltaic pile foundations under various earthquake levels includes: Extract the allowable stress value of each soil type under each earthquake level from the database; According to the soil type, the allowable stress value of the soil type under each earthquake level is screened and recorded as T d ″; The stress value of the soil at each collection point of the photovoltaic pile foundation under each earthquake level is obtained through the stress monitoring equipment, and then the average stress value of the photovoltaic pile foundation under each earthquake level is obtained through the average formula, which is used as the stress value of the photovoltaic pile foundation under each earthquake level, recorded as T d ; Analysis of the stress influence coefficient γ of the soil on photovoltaic pile foundations under various earthquake levels d , 4. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 1 is characterized in that: The method of drawing a variation trend diagram of the deformation deviation coefficient and the stress influence coefficient of the photovoltaic pile foundation includes: A coordinate system is constructed with each earthquake level as the horizontal coordinate and the deformation deviation coefficient as the vertical coordinate, and a variation trend diagram of the deformation deviation coefficient of the photovoltaic pile foundation is obtained; A coordinate system with each earthquake level as the horizontal coordinate and the stress influence coefficient as the vertical coordinate is constructed to obtain a changing trend diagram of the stress influence coefficient of the photovoltaic pile foundation.

5. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 4 is characterized in that: The analysis of the seismic performance index of photovoltaic pile foundations under various earthquake levels includes: The variation trend graph of the deformation deviation coefficient of the photovoltaic pile foundation is compared with the standard variation trend graph of the deformation deviation coefficient of the set photovoltaic pile foundation, and the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the excess part is obtained, and the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level of the remaining part is recorded as 0, and the difference of the deformation deviation coefficient of the photovoltaic pile foundation under each earthquake level is obtained by statistics, which is recorded as ΔQ d ; According to the analysis method of the difference of deformation deviation coefficient of photovoltaic pile foundation under each earthquake level, the difference of stress influence coefficient of photovoltaic pile foundation under each earthquake level is obtained in the same way, which is recorded as ΔY d ; Analysis of the seismic performance index ψ of photovoltaic pile foundations under various earthquake levels d , where ΔQ′ d Indicates the reference deformation deviation coefficient difference of the photovoltaic pile foundation under the set dth earthquake level, ΔY d ′ represents the reference stress influence coefficient difference of the photovoltaic pile foundation under the set dth earthquake level.

6. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 1 is characterized in that: The analysis of the cracking index of the support under each earthquake level includes: The crack width and length of each part of the support under each earthquake level are collected by laser scanner and are denoted as η di and di , where i represents the number corresponding to the i-th part, i=1,2,3,...I; The images of each part of the support under each earthquake level are obtained through the camera, and then the number of cracks in each part of the support under each earthquake level is obtained through the image recognition algorithm, which is recorded as C di ; Analysis of the cracking index K of the support under each earthquake level d : Wherein η0 represents the set reference crack width, ι0 represents the set reference crack length, I represents the total number of parts of the bracket, δ1 represents the weight corresponding to the set crack width, δ2 represents the weight corresponding to the set crack length, δ3 represents the weight corresponding to the set number of cracks, and δ1+δ2+δ3=1.

7. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 6 is characterized in that: The acquisition of displacement and structural deformation of each part of the support under each earthquake level includes: The displacement of each part of the support under each earthquake level is collected by a laser rangefinder, and the displacement of each part of the support under each earthquake level is substituted into the average formula to obtain the average displacement of the support under each earthquake level, which is used as the overall displacement of the support under each earthquake level and recorded as J d ; The degree of structural deformation of each part of the support under each earthquake level is collected by laser scanner, and the degree of structural deformation of each part of the support under each earthquake level is compared to obtain the maximum structural deformation degree of the support under each earthquake level, which is used as the structural deformation degree of the support under each earthquake level, recorded as B d .

8. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 7 is characterized in that: The specific formula for analyzing the seismic performance index of the support under each earthquake level is: where J′ d represents the allowable overall displacement of the support under the set dth earthquake level, K′ d It represents the allowable cracking index of the support under the set dth earthquake level, B′ d It represents the allowable structural deformation degree of the support under the set d-th earthquake level, ε1 represents the weight corresponding to the set overall displacement difference of the support, ε2 represents the weight corresponding to the set cracking index difference of the support, ε3 represents the weight corresponding to the set structural deformation degree difference of the support, and ε1+ε2+ε3=1.

9. The photovoltaic pile foundation and support seismic performance simulation analysis system based on the photovoltaic power station according to claim 1, characterized in that: The specific formula for analyzing the comprehensive index of seismic performance of photovoltaic pile foundations and brackets is: Where D represents the total number of earthquake magnitudes, χ d represents the weight factor corresponding to the seismic performance index of the photovoltaic pile foundation under the set d-th earthquake level, χ′ d represents the weight factor corresponding to the seismic performance index of the support under the set dth earthquake level, and χ d +χ′ d =1.

10. The photovoltaic pile foundation and support seismic performance simulation analysis system based on a photovoltaic power station according to claim 1, characterized in that: The determination of whether the seismic performance of the photovoltaic pile foundation and the bracket is qualified includes: The comprehensive index of seismic performance of photovoltaic pile foundation and bracket is compared with the preset threshold of comprehensive index of seismic performance of photovoltaic pile foundation and bracket. If the comprehensive index of seismic performance of photovoltaic pile foundation and bracket is greater than or equal to the preset threshold of comprehensive index of seismic performance of photovoltaic pile foundation and bracket, the seismic performance of photovoltaic pile foundation and bracket is qualified; if the comprehensive index of seismic performance of photovoltaic pile foundation and bracket is less than the preset threshold of comprehensive index of seismic performance of photovoltaic pile foundation and bracket, the seismic performance of photovoltaic pile foundation and bracket is unqualified.

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