Intelligent design method of overhead transmission line foundation

Abstract

The invention discloses an intelligent design method for an overhead power transmission line foundation, which belongs to the technical field of power transmission engineering, and comprises the following steps: automatically extracting information such as tower positioning and meteorological data in a three-dimensional line model, carrying out intelligent calculation on tower load of the whole line, and generating line hanging point load of tower position by tower position; furthermore, internal force of all rods is calculated based on tower finite element analysis, basic acting force files of all tower legs of all nominal heights are formed, in the aspect of basic design, batch import of geological data, intelligent merging of basic acting force and construction and optimization design of a universal basic library are achieved, and therefore the design process is simplified, and the design precision and efficiency are improved. According to the method, the data of the towers in the three-dimensional line model can be extracted, and intelligent calculation and lean output of the loads of the towers on the whole line can be carried out in combination with the use conditions of the towers.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission engineering, and in particular is an intelligent design method for an overhead power transmission line foundation. Background Art

[0002] Due to the developed economy in Jiangsu Province, the transmission lines have large cross-sections and multiple loops, resulting in large foundation loads on the transmission lines. In addition, the river network, impact plains, coastal tidal flats, etc. are widely distributed in Jiangsu Province, resulting in poor geological conditions for the foundation of the transmission lines. In addition, the design habits of designers are relatively conservative. When designing, they only consider the design efficiency and do not calculate the actual foundation loads of each tower position. The foundation force generally adopts the maximum foundation force provided in the typical design. The design of the tension and compression legs of the corner tower is not clearly distinguished, and large foundation designs such as four legs are often used. These situations have led to large investments in the foundation of transmission lines in Jiangsu Province and low economic benefits. Summary of the invention

[0003] The purpose of the present invention is to provide an intelligent design method for the foundation of an overhead transmission line. By utilizing a digital model of a power grid, the data of towers in a three-dimensional model of the line is extracted, and intelligent calculation of the loads on the towers of the entire line is carried out in combination with the use of the towers, so as to realize a lean and green design of the foundation of a transmission line.

[0004] In order to solve the above technical problems, the present invention provides an intelligent design method for an overhead power transmission line foundation, comprising the following steps:

[0005] S1. Calculation of foundation forces of pole towers of the entire line: by extracting the positioning data, meteorological data and pole tower model data of the pole towers in the three-dimensional line model, intelligent calculation of the pole tower loads of the entire line is performed to obtain the load data of the hanging points of the entire line. Based on the obtained load data, the foundation forces of the pole towers of the entire line are calculated using the pole tower calculation model, and a file of foundation forces of the pole towers of the entire line is generated;

[0006] S2. Intelligent merged design of overhead transmission line foundation: Based on the calculated foundation forces of the towers of the entire line, combined with the tower's use conditions, geological conditions, tower foundation form and tower size, the optimal solution for the intelligent merged design of the overhead transmission line foundation is screened out.

[0007] As a further description of the present invention, step S1 specifically includes:

[0008] S1-1. Obtaining load calculation parameters: Obtaining transmission line load parameters from the three-dimensional line model;

[0009] S1-2. Acquisition of mechanical parameters of transmission lines and insulation strings: Automatically acquire mechanical parameters of transmission lines and insulation strings of specified models from the engineering database;

[0010] S1-3, intelligent calculation of transmission line electrical load: the acquired transmission line load parameters and transmission line mechanical parameters are used to calculate the transmission line unit load under various working conditions using the wire unit load formula, and then the transmission line electrical load under various working conditions is calculated using the wire state equation;

[0011] The wire unit load formula includes:

[0012] Self-gravity load: g1=9.80665×p1;

[0013] Ice gravity load: g2 = 9.80665 × 0.9πδ (δ + d) × 10 3 ;

[0014] Self-gravity plus ice gravity load: g3 = g1 + g2;

[0015] Wind load when there is no ice: g4 = 0.625v 2 dαμ δc ×10 3 ;

[0016] Wind load when covered with ice: g5 = 0.625v 2 (d+2δ)αμ δc ×10 3 ;

[0017] Comprehensive load when there is no ice:

[0018] Comprehensive load when ice is applied:

[0019] Where p1 is the unit load of the transmission line, d is the diameter of the transmission line, δ is the ice thickness, v is the wind speed at the average height of the transmission line, α is the wind pressure non-uniformity coefficient of the transmission line, μ δc is the shape coefficient of the transmission line;

[0020] The wire state equation is:

[0021] In the formula, σ m , σ are the horizontal stresses at the lowest point of the transmission line in the known and unknown conditions, respectively, γ m , γ m are the transmission line load ratios under known and unresolved conditions, respectively, t m , t are the temperatures in the known and unknown conditions, l is the transmission line span, E is the elastic coefficient of the transmission line, and α is the electrical expansion coefficient of the transmission line;

[0022] S1-4, intelligent calculation of the electrical load of the insulation string: the electrical load of the insulation string is calculated according to the obtained mechanical parameters of the insulation string;

[0023] S1-5, intelligent combination of hanging point loads: The calculated transmission line electrical loads and insulation string electrical loads are combined into combined loads of each hanging point according to the hanging point type, and decomposed into forces in the three directions of X, Y, and Z according to the tower's own coordinate system;

[0024] S1-6, load calculation of the hanging point of the pole towers of the whole line: repeat the steps of S1-1 to S1-5 for each pole tower of the whole line, complete the calculation of the hanging point load of the pole towers of the whole line, and store the load calculation results in the pole tower calculation model according to the pole tower position number;

[0025] S1-7. Importing the load data of all line towers: retrieve the tower calculation file in the tower calculation model according to the tower model, then search for the corresponding load calculation results according to the tower position number, and import the load calculation results into the tower calculation file;

[0026] S1-8. Finite element calculation of all line towers: Use the tower finite element analysis module in the tower calculation model to perform structural force finite element analysis on each tower calculation file and calculate the internal forces of all poles;

[0027] S1-9. Generation of foundation force files for all line towers: The calculated internal forces of the poles are decomposed into the root node forces according to the tower's own coordinate system to form the force results of each foundation point, and the foundation force files for all line towers are generated in the order of tower height and tower leg number.

[0028] As a further description of the present invention, the load calculation parameters described in step S1-1 include the height of the hanging point, design weather, horizontal span, vertical span, transmission line model, ground conductor safety factor, number of transmission line splits, insulation string model and number of insulation strings; the transmission line mechanical parameters described in step S1-2 include the transmission line cross-section, transmission line outer diameter, transmission line weight, transmission line elastic coefficient, transmission line expansion coefficient and transmission line breaking force; the insulation string mechanical parameters include insulation string length, insulation string weight and insulation string windward area.

[0029] As a further description of the present invention, the electrical load of the insulation string described in step S1-4 includes the wind load of the insulation string and the gravity load of the insulation string.

[0030] As a further description of the present invention, the intelligent merged design of the overhead transmission line foundation described in step S2 is to merge the tower legs according to the tower type, the tower rotation angle, and the exposure of each tower leg, and then design each tower tower one by one, and then select the optimal configuration according to the configuration conditions, and perform intelligent design of the overhead transmission line foundation according to the optimal configuration.

[0031] As a further description of the present invention, step S2 specifically includes:

[0032] S2-1. Geological data import: According to the geological conditions of each basic tower position of the entire line, compile the geological data of each basic tower position of the entire line, import it into the database of the three-dimensional line model, automatically match it to the tower legs of each tower position, and store it in the basic planning and design module according to the structured data;

[0033] S2-2, tower leg information and foundation force acquisition: using the basic planning and design module to automatically acquire the tower leg information of each tower position of the entire line, and automatically acquire the foundation force of the corresponding tower leg from the foundation force file of the entire line tower generated in step S1;

[0034] S2-3. Specify foundation type: Based on the imported geological data and the geological types of each tower leg, the geological types are summarized and foundation types are specified according to different geological types;

[0035] S2-4, merging the four legs of the suspended tower: determine the tower type of each tower position on the entire line, select the suspended tower position, and merge the four-leg design states of the suspended tower position;

[0036] S2-5, Merging of four legs of corner towers: Determine the rotation angle of the corner towers of the entire line, and merge the four legs of the corner towers according to the rotation angle. Specifically, if the rotation angle of the tower is <20°, the design status of the four legs of the tower is merged equally; if the rotation angle of the tower is ≥20°, the design status of the four legs of the tower is determined according to the rotation direction, and the tension and compression legs are merged equally;

[0037] S2-6, foundation action force merging: merging the foundation action forces of the tower legs of all tower positions according to the merging status;

[0038] S2-7. Construction of a general basic library: Store the storage data of each basic model in a hierarchical manner according to voltage level, geological type and foundation type, and build a general basic library;

[0039] S2-8. Optimal design of foundation for the entire line: Perform foundation design for each tower after the foundation force has been merged, automatically obtain the merged foundation force, tower root information, tower geological data and anchor bolt information, use the foundation calculation module to optimize the foundation size and foundation reinforcement, and complete the optimal design of the foundation.

[0040] As a further description of the present invention, step S2-8 can also be the foundation configuration design of the entire line: the tower positions that have completed the foundation force merger are configured one by one, and various matching foundation models are obtained from the general foundation library according to the merged foundation forces, geological types and foundation design outcrops of the designed tower positions, and the matching foundations are checked for stability, strength and reinforcement, and the foundations that meet the requirements are selected as the final configuration of the current tower legs.

[0041] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0042] 1. The digital model supports detailed design of each level, tower, phase (pole), and leg. It can simulate and calculate various parameters of the transmission line more accurately to ensure the accuracy and reliability of the design. Combined with the three-dimensional simulation scene, users can have an intuitive design experience and reduce design errors and duplication of work.

[0043] 2. The digital platform supports data integration from multiple geographic data centers, realizes unified management and sharing of design data, supports related professionals to complete design work on a unified design platform, realizes design informatization, software integration, electronic drawings, and standardized management, and improves design efficiency and quality;

[0044] 3. The digital platform can automatically count and submit various engineering quantities, reducing the tediousness and errors of manual counting, supporting the analysis and display of refined lofting models, BIM entity models, and accurate verification of the spatial gaps of tower hanging points to ensure the compliance and safety of the design;

[0045] 4. The digital model can consider the use of environmentally friendly materials in the design stage, optimize the material selection and layout of the transmission lines, reduce the impact on the environment, and use digital means to achieve energy-saving design and optimization of transmission lines, reducing energy consumption and emissions. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with specific implementation modes.

[0047] This embodiment provides an intelligent design method for an overhead transmission line foundation, comprising the following steps:

[0048] S1. Calculation of foundation forces of pole towers on the entire line: By extracting the positioning data (span and angle), meteorological data, and pole tower model of the pole towers in the three-dimensional line model, intelligent calculation and lean output of loads are performed on the pole towers on the entire line, and corresponding foundation force results for each tower position and each tower leg are generated, so as to realize intelligent calculation of loads of pole towers on the entire line and obtain load data. Then, according to the obtained load data, the foundation forces of pole towers on the entire line are calculated using the pole tower calculation model, and a file of foundation forces of pole towers on the entire line is generated;

[0049] S2. Intelligent merged design of overhead transmission line foundation: Combined with the use conditions, geological conditions, tower foundation form and tower size of the tower, the conditions and methods for merged design of tower foundation are studied to simplify the design process. The intelligent design of overhead transmission line foundation is different from the traditional foundation design. It adopts the method of merging the four legs according to the tower type, the angle of the tower rotation and the outcropping of each tower leg, and then designing the foundation of each tower tower to improve the design precision of the foundation of the whole line. At the same time, it provides the construction of a general foundation library, and then selects the optimal solution for the intelligent merged design of overhead transmission line foundation from the foundation library according to the configuration conditions.

[0050] Wherein step S1 specifically comprises:

[0051] S1-1. Obtaining load calculation parameters: Automatically obtain load calculation parameters such as hanging point height, design weather, horizontal span, vertical span, ground wire model, ground wire safety factor, number of conductor splits, insulation string model, and insulation string quantity from the three-dimensional line model;

[0052] S1-2. Acquisition of mechanical parameters of transmission lines and mechanical parameters of insulation strings: Automatically acquire mechanical parameters of transmission lines and mechanical parameters of insulation strings of specified models from the engineering database; the mechanical parameters of transmission lines include the section of transmission lines, outer diameter of transmission lines, weight of transmission lines, elastic coefficient of transmission lines, expansion coefficient of transmission lines and breaking tension of transmission lines, etc., and the mechanical parameters of insulation strings include the length of insulation strings, weight of insulation strings and wind-exposed area of ​​insulation strings, etc.;

[0053] S1-3, intelligent calculation of transmission line electrical load: the acquired transmission line load parameters and transmission line mechanical parameters are used to calculate the transmission line unit load under various working conditions using the wire unit load formula, and then the transmission line electrical load under various working conditions is calculated using the wire state equation;

[0054] The calculation formula for wire unit load is as follows:

[0055] Self-gravity load: g1=9.80665×p1;

[0056] Ice gravity load: g2 = 9.80665 × 0.9πδ (δ + d) × 10 3 ;

[0057] Self-gravity plus ice gravity load: g3 = g1 + g2;

[0058] Wind load when there is no ice: g4 = 0.625v 2 dαμ δc ×10 3 ;

[0059] Wind load when covered with ice: g5 = 0.625v 2 (d+2δ)αμ δc×10 3 ;

[0060] Comprehensive load when there is no ice:

[0061] Comprehensive load when ice is applied:

[0062] In the formula, p1-unit load of the wire, d-wire diameter, δ-ice thickness, v-wind speed at the average height of the wire, α-wind pressure unevenness coefficient of the wire, μ δc - The body factor of the wire;

[0063] The wire state equation formula is as follows:

[0064]

[0065] In the formula, σ m ,σ-are the horizontal stress at the lowest point of the wire in the known case and the case to be determined respectively;γ m , γ m - are the load ratios of the wires for the known and unknown conditions respectively; t m , t-the temperature in the known and unknown conditions respectively; l-the distance between wires; E-elastic coefficient of wires; α-electrical expansion coefficient;

[0066] S1-4, intelligent calculation of electrical load of insulation string, calculating wind load and gravity load of insulation string respectively according to the obtained mechanical parameters of insulation string;

[0067] S1-5, intelligent combination of hanging point loads: The calculated transmission line electrical loads and insulation string electrical loads are combined according to the hanging point types, and then combined with the obtained tower rotation angle, the loads are combined into combined loads of each hanging point, and decomposed into X, Y, and Z direction forces according to the tower's own coordinate system;

[0068] S1-6, automatic calculation of the loads at the hanging points of the pole towers of the entire line: repeat the steps of S1-1 to S1-5 for each pole tower of the entire line, complete the calculation of the loads at the hanging points of the pole towers of the entire line, and store the load calculation results in the pole tower calculation model according to the pole tower position number;

[0069] S1-7. Importing the load data of all line towers: According to the tower model, retrieve the tower calculation file in the tower calculation analysis module of the tower calculation model, then automatically search for the corresponding load calculation results according to the tower position number, and import the load calculation results into the tower calculation file;

[0070] S1-8. Finite element calculation of all line towers: Use the tower finite element analysis module in the tower calculation model to perform structural force finite element analysis on each tower with updated load data to calculate the internal forces of all poles;

[0071] S1-9. Generation of foundation force files for all line towers: The calculated internal forces of the foundation point connecting rods are decomposed into the root node forces according to the tower's own coordinate system to form the force results of each foundation point, and the foundation force files of each tower leg of the entire line are generated in the order of tower height and tower leg number.

[0072] The specific process of step S2 includes:

[0073] S2-1. Import geological data of towers at all lines in batches: According to the geological conditions of all basic towers at all lines, compile geological parameter tables for each tower, import the edited tables into the database of the 3D line model in batches, automatically match them to the tower legs of each tower, and store them in the basic planning and design module according to structured data;

[0074] S2-2, tower leg information and foundation force acquisition: using the basic planning and design module to automatically acquire the tower leg information of all tower positions on the entire line, and automatically acquire the foundation force of the corresponding tower leg from the foundation force file of the entire line tower generated in step S1;

[0075] S2-3. Specify foundation type according to geological type: Based on the imported geological data and the geological type of each tower leg, the geological types are summarized and foundation types are specified according to different geological types;

[0076] S2-4, merging four legs of suspension towers: determine the tower types of all towers on the entire line, select all types of suspension towers, and merge the four-leg design states of the towers of the suspension tower type;

[0077] S2-5, Merging of four legs of corner towers: Determine the rotation angle of the corner towers of the entire line and merge them according to the degree range. If the rotation angle is <20°, the design status of the four legs of the tower will be merged equally; if the rotation angle of the tower is ≥20°, the design status of the four legs of the tower will be determined according to the rotation direction, and the tension and compression legs will be merged equally;

[0078] S2-6, foundation force merging: merging the foundation forces of the tower legs of all tower positions according to the merging status, and merging them into the maximum foundation force result in one group;

[0079] S2-7. Construction of general foundation library: Data of each foundation model is stored in a hierarchical manner according to voltage level, geological type, foundation type, etc. The data stored in each foundation model includes current foundation model information, calculation data, foundation forces during foundation design, key geological parameters, design outcrops, etc.;

[0080] S2-8, Optimal design of foundation for the entire line: Complete the foundation design of each tower after the foundation force is merged, automatically obtain the merged foundation force, tower root information, detailed tower geological data, and anchor bolt information, use the foundation calculation module to optimize the foundation size and foundation reinforcement, and complete the foundation optimization design;

[0081] S2-9. Design of foundation configuration for the entire line: After completing the foundation force merge, the foundation configuration is performed for each tower. According to the merged foundation force of the designed tower, geological type, foundation design outcrop, etc., various matching foundation models are obtained from the general foundation library, and the matching foundations are checked for stability, strength and reinforcement until the foundation that meets the requirements is selected as the final configuration of the current tower leg.

[0082] The above steps S2-8 and S2-9 do not affect each other and can be substituted for each other. They are two means of basic optimization design.

[0083] The above embodiments are only used to illustrate the present invention, wherein the methods for calculating the forces acting on different pole tower foundations and intelligently merging the forces acting on different foundations can be varied. Any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. An intelligent design method for overhead power transmission line foundation, characterized in that: The following steps are involved: S1. Calculation of foundation forces of pole towers of the entire line: by extracting the positioning data, meteorological data and pole tower model data of the pole towers in the three-dimensional line model, intelligent calculation of the pole tower loads of the entire line is performed to obtain the load data of the hanging points of the entire line. Based on the obtained load data, the foundation forces of the pole towers of the entire line are calculated using the pole tower calculation model, and a file of foundation forces of the pole towers of the entire line is generated; S2. Intelligent merged design of overhead transmission line foundation: Based on the calculated foundation forces of the towers of the entire line, combined with the tower's use conditions, geological conditions, tower foundation form and tower size, the optimal solution for the intelligent merged design of the overhead transmission line foundation is screened out.

2. The intelligent design method for overhead power transmission line foundation according to claim 1, characterized in that: Step S1 specifically includes: S1-1. Obtaining load calculation parameters: Obtaining transmission line load parameters from the three-dimensional line model; S1-2. Acquisition of mechanical parameters of transmission lines and insulation strings: Automatically acquire mechanical parameters of transmission lines and insulation strings of specified models from the engineering database; S1-3, intelligent calculation of transmission line electrical load: the acquired transmission line load parameters and transmission line mechanical parameters are used to calculate the transmission line unit load under various working conditions using the wire unit load formula, and then the transmission line electrical load under various working conditions is calculated using the wire state equation; S1-4, intelligent calculation of the electrical load of the insulation string: the electrical load of the insulation string is calculated according to the obtained mechanical parameters of the insulation string; S1-5, intelligent combination of hanging point loads: The calculated transmission line electrical loads and insulation string electrical loads are combined into combined loads of each hanging point according to the hanging point type, and decomposed into forces in the three directions of X, Y, and Z according to the tower's own coordinate system; S1-6, load calculation of the hanging point of the pole towers of the whole line: repeat the steps of S1-1 to S1-5 for each pole tower of the whole line, complete the calculation of the hanging point load of the pole towers of the whole line, and store the load calculation results in the pole tower calculation model according to the pole tower position number; S1-7. Importing the load data of all line towers: retrieve the tower calculation file in the tower calculation model according to the tower model, then search for the corresponding load calculation results according to the tower position number, and import the load calculation results into the tower calculation file; S1-8. Finite element calculation of all line towers: Use the tower finite element analysis module in the tower calculation model to perform structural force finite element analysis on each tower calculation file and calculate the internal forces of all poles; S1-9. Generation of foundation force files for all line towers: The calculated internal forces of the poles are decomposed into the root node forces according to the tower's own coordinate system to form the force results of each foundation point, and the foundation force files for all line towers are generated in the order of tower height and tower leg number.

3. The intelligent design method for overhead power transmission line foundation according to claim 2, characterized in that: The load calculation parameters described in step S1-1 include the height of the hanging point, design weather, horizontal span, vertical span, transmission line model, ground conductor safety factor, number of transmission line splits, insulation string model and number of insulation strings; the transmission line mechanical parameters described in step S1-2 include the transmission line cross-section, transmission line outer diameter, transmission line weight, transmission line elastic coefficient, transmission line expansion coefficient and transmission line breaking force; the insulation string mechanical parameters include insulation string length, insulation string weight and insulation string windward area.

4. The intelligent design method for overhead power transmission line foundation according to claim 2, characterized in that: The wire unit load formula described in step S1-3 includes: Self-gravity load: g1=9.80665×p1; Ice gravity load: g2 = 9.80665 × 0.9πδ (δ + d) × 10 3 ; Self-gravity plus ice gravity load: g3 = g1 + g2; Wind load when there is no ice: g4 = 0.625v 2 dαμ δc ×10 3 ; Wind load when covered with ice: g5 = 0.625v 2 (d+2δ)αμ δc ×10 3 ; Comprehensive load when there is no ice: Comprehensive load when ice is applied: Where p1 is the unit load of the transmission line, d is the diameter of the transmission line, δ is the ice thickness, v is the wind speed at the average height of the transmission line, α is the wind pressure non-uniformity coefficient of the transmission line, μ δc is the shape coefficient of the transmission line.

5. The intelligent design method for overhead power transmission line foundation according to claim 3 or 4, characterized in that: The wire state equation described in step S1-3 is: In the formula, σ m , σ are the horizontal stresses at the lowest point of the transmission line in the known and unknown conditions, respectively, γ m , γ m are the transmission line load ratios under known and unresolved conditions, respectively, t m , t are the temperatures under known and unknown conditions respectively, l is the transmission line span, E is the elastic coefficient of the transmission line, and α is the electrical expansion coefficient of the transmission line.

6. The intelligent design method for overhead power transmission line foundation according to claim 2, characterized in that: The electrical load of the insulation string described in step S1-4 includes the wind load of the insulation string and the gravity load of the insulation string.

7. The intelligent design method for overhead power transmission line foundation according to claim 1, characterized in that: The intelligent merged design of the overhead transmission line foundation described in step S2 is to merge the tower legs according to the tower type, the tower rotation angle, and the exposure of each tower leg, and then design each tower tower one by one, and then select the optimal configuration according to the configuration conditions, and perform intelligent design of the overhead transmission line foundation according to the optimal configuration.

8. The intelligent design method for overhead power transmission line foundation according to claim 7, characterized in that: Step S2 specifically includes: S2-1. Geological data import: According to the geological conditions of each basic tower position of the entire line, compile the geological data of each basic tower position of the entire line, import it into the database of the three-dimensional line model, automatically match it to the tower legs of each tower position, and store it in the basic planning and design module according to the structured data; S2-2, tower leg information and foundation force acquisition: using the basic planning and design module to automatically acquire the tower leg information of each tower position of the entire line, and automatically acquire the foundation force of the corresponding tower leg from the foundation force file of the entire line tower generated in step S1; S2-3. Specify foundation type: Based on the imported geological data and the geological types of each tower leg, the geological types are summarized and foundation types are specified according to different geological types; S2-4, merging the four legs of the suspended tower: determine the tower type of each tower position on the entire line, select the suspended tower position, and merge the four-leg design states of the suspended tower position; S2-5, merging the four legs of the corner tower: determine the rotation angle of the corner towers of the entire line, and merge the four legs of the corner towers according to the rotation angle of the towers; S2-6, foundation action force merging: merging the foundation action forces of the tower legs of all tower positions according to the merging status; S2-7. Construction of general basic library: store the storage data of each basic model in a hierarchical manner according to voltage level, geological type and foundation type, and build a general basic library; S2-8. Optimal design of foundation for the entire line: Perform foundation design for each tower after the foundation force has been merged, automatically obtain the merged foundation force, tower root information, tower geological data and anchor bolt information, use the foundation calculation module to optimize the foundation size and foundation reinforcement, and complete the optimal design of the foundation.

9. The intelligent design method for overhead power transmission line foundation according to claim 8, characterized in that: The step S2-5 of merging the four legs of the corner tower according to the range of the tower rotation angle is as follows: if the tower rotation angle is <20°, the design states of the four legs of the tower are equally merged; if the tower rotation angle is ≥20°, the design states of the four legs of the tower are judged as tension and compression according to the rotation direction, and the tension and compression legs are equally merged.

10. The intelligent design method for overhead power transmission line foundation according to claim 8, characterized in that: Step S2-8 can also be the foundation configuration design for the entire line: the foundation configuration of each tower position after the foundation force is merged is performed, and various matching foundation models are obtained from the general foundation library according to the merged foundation force, geological type and foundation design outcrop of the designed tower position, and the matching foundation is checked for stability, strength and reinforcement, and the foundation that meets the requirements is selected as the final configuration of the current tower leg.

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