Power transmission tower wind vibration displacement probability evaluation method

Abstract

The invention discloses a power transmission tower wind vibration displacement probability evaluation method, and belongs to the technical field of power transmission tower displacement evaluation, and the method comprises the steps: carrying out the defect detection of a power transmission tower, and obtaining the defect data of the power transmission tower; based on the defect data of the power transmission tower, constructing a power transmission tower finite element model containing defects; calculating the displacement response of the power transmission tower according to the corrosion depth time-history sample and the wind speed time-history sample of the power transmission tower based on the finite element model of the power transmission tower containing the defects; and based on the displacement response of the power transmission tower, performing wind vibration displacement probability evaluation on the power transmission tower to obtain a wind vibration displacement probability evaluation result of the power transmission tower. According to the method, power transmission tower wind vibration displacement probability evaluation considering various defect influences can be realized.

Description

Technical Field

[0001] The invention relates to a probability evaluation method for wind-induced displacement of a transmission tower, and belongs to the technical field of transmission tower displacement evaluation. Background Art

[0002] As a key infrastructure for power transmission, the stability of transmission towers is directly related to the safety and reliability of power supply. With the rapid development of high-voltage power grids, the requirements for the bearing capacity of transmission towers are increasing. During their service, transmission towers must not only bear their own gravity loads, but also complex loads such as ice loads, snow loads, wind loads, and tension of conductors and ground wires. These loads can easily lead to loosening, rusting, or even falling off of the node connections of transmission towers, which seriously threatens the structural safety of transmission towers and may cause them to break or even collapse, thus causing major safety accidents.

[0003] At present, the defects of transmission towers mainly include rust, tower foundation settlement, and loose bolts. These defects not only affect the structural integrity of the transmission tower, but may also cause the displacement of the transmission tower and increase the risk of collapse. Traditional transmission tower evaluation methods mostly rely on regular manual inspections, which are inefficient and difficult to monitor the status of transmission towers in real time. In recent years, some patents have attempted to solve this problem through technical means, such as real-time monitoring of the rust and looseness of bolts through monitoring devices, but these methods are often limited to a single defect type and lack comprehensive consideration of the probabilistic evaluation of the overall displacement of the transmission tower. Probabilistic evaluation of the wind-induced displacement response of the transmission tower can effectively reflect the operating status of the transmission tower. Therefore, how to establish a probabilistic evaluation method for wind-induced displacement of transmission towers that takes into account multiple defects is an urgent problem to be solved. Summary of the invention

[0004] The object of the present invention is to provide a method for evaluating the probability of wind-induced displacement of a transmission tower, which can realize the evaluation of the probability of wind-induced displacement of a transmission tower taking into account the influence of various defects.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A method for evaluating the probability of wind-induced displacement of a transmission tower, comprising: Conduct defect detection on transmission towers and obtain defect data of transmission towers; Based on the defect data of the transmission tower, a finite element model of the transmission tower including defects is constructed; Based on the finite element model of the transmission tower including defects, the displacement response of the transmission tower is calculated according to the corrosion depth time history samples and wind speed time history samples of the transmission tower; Based on the displacement response of the transmission tower, the wind-induced displacement probability of the transmission tower is evaluated to obtain the wind-induced displacement probability evaluation result of the transmission tower.

[0006] Furthermore, the defect data of the transmission tower includes the settlement displacement of the tower legs, the corrosion distribution of the rods, the bolt falling off and the structural dynamic characteristics.

[0007] Furthermore, the transmission tower is inspected for defects and the defect data of the transmission tower is obtained, including: Conduct settlement detection on the transmission tower to obtain the settlement displacement of the tower legs; Take photos and inspect the transmission towers to obtain the distribution of corrosion on the transmission tower poles and the situation of bolt shedding; The acceleration response of the transmission tower is collected, and based on the acceleration response of the transmission tower, the modal identification method is used to obtain the structural dynamic characteristics of the transmission tower.

[0008] Furthermore, based on the defect data of the transmission tower, a finite element model of the transmission tower including defects is constructed, including: Based on the construction drawings of the transmission tower, an initial finite element model was constructed; Based on the defect data of the transmission tower, the initial finite element model is modified to obtain a finite element model of the transmission tower including the defects; Among them, based on the defect data of the transmission tower, the initial finite element model is modified including: According to the settlement displacement of the tower legs of the transmission tower, the position of the corresponding tower legs of the transmission tower is corrected; According to the corrosion distribution of the transmission tower rods, the average cross-sectional thickness of the corresponding transmission tower rods is corrected; According to the bolt falling off of the transmission tower, the constraints of the corresponding nodes of the transmission tower are modified; Taking the component material parameters of the transmission tower as uncertain variables and the structural dynamic characteristics of the transmission tower as the objective function, the finite element correction method is used to correct the structural material parameters of the transmission tower.

[0009] Furthermore, according to the bolt falling off condition of the transmission tower, the constraints of the corresponding nodes of the transmission tower are modified, including: If all the bolts at a node of the transmission tower fall off, the constraint of that node will be cancelled; If the bolts at a node of the transmission tower are partially detached, the constraint of the node is modified from fixed to hinged.

[0010] Furthermore, based on the finite element model of the transmission tower including defects, according to the corrosion depth time history samples and wind speed time history samples of the transmission tower, the displacement response of the transmission tower is calculated including: Generate wind loads based on wind speed time history samples; Update the time history samples of the corrosion depth of the transmission tower to the finite element model of the transmission tower including defects to obtain a probabilistic finite element model that takes into account the uncertainty of the corrosion depth; Wind loads are applied to a probabilistic finite element model considering the uncertainty of corrosion depth, and the displacement response of the transmission tower is calculated.

[0011] Furthermore, the method for obtaining the corrosion depth time history samples and wind speed time history samples of the transmission tower includes: The corrosion depth of the transmission tower is taken as a random variable obeying the normal distribution and is sampled jointly with the random parameters of the wind field to obtain the corrosion depth time history samples of the transmission tower, and the spectral representation method is used to obtain the wind speed time history samples.

[0012] Furthermore, the joint sampling adopts the number theory point selection method.

[0013] Furthermore, the calculation formula for the corrosion depth of the transmission tower is: ; in, Indicates the corrosion depth of the transmission tower. represents the exposure time of the transmission tower, represents the average corrosion rate of the transmission tower in the first year, Represents the metal environment characteristic parameters.

[0014] Furthermore, based on the displacement response of the transmission tower, the probability of wind-induced displacement of the transmission tower is evaluated, and the evaluation results of the probability of wind-induced displacement of the transmission tower include: The probability density evolution theory is used to analyze the displacement response of the transmission tower and calculate the probability distribution function of the displacement response of the transmission tower; Based on the displacement response probability distribution function of the transmission tower, the wind-induced displacement probability assessment of the transmission tower is performed to obtain the wind-induced displacement probability assessment result of the transmission tower.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The method for evaluating the probability of wind-induced displacement of a transmission tower provided by the present invention performs defect detection on the transmission tower, constructs a finite element model of the transmission tower containing defects, and based on the finite element model of the transmission tower containing defects, performs wind-induced displacement probability evaluation on the transmission tower. Through defect detection and probability analysis, it is possible to implement wind-induced displacement probability evaluation of the transmission tower taking into account the influence of multiple defects, thereby providing technical support for the operation and maintenance of the transmission tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of a method for evaluating the probability of wind-induced displacement of a transmission tower provided by an embodiment of the present invention; Figure 2 is a schematic diagram of the distribution of the acceleration sensor and the settlement detection device provided in an embodiment of the present invention; Figure 3 is a frequency distribution histogram of corrosion depth provided by an embodiment of the present invention; Figure 4 is a schematic diagram of a representative time history sample with an average wind speed of 20 m / s provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of the relative deflection distribution function of the top of the transmission tower under different wind speeds provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0018] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0019] The present application provides a method for evaluating the probability of wind-induced displacement of a transmission tower. Figure 1 As shown, including: Conduct defect detection on transmission towers and obtain defect data of transmission towers; Based on the defect data of the transmission tower, a finite element model of the transmission tower including defects is constructed; Based on the finite element model of the transmission tower including defects, the displacement response of the transmission tower is calculated according to the corrosion depth time history samples and wind speed time history samples of the transmission tower; Based on the displacement response of the transmission tower, the wind-induced displacement probability of the transmission tower is evaluated to obtain the wind-induced displacement probability evaluation result of the transmission tower.

[0020] The method for evaluating the probability of wind-induced displacement of a transmission tower provided in this embodiment performs defect detection on the transmission tower, constructs a finite element model of the transmission tower containing defects, and performs wind-induced displacement probability evaluation on the transmission tower based on the finite element model of the transmission tower containing defects. Through defect detection and probability analysis, it is possible to implement wind-induced displacement probability evaluation of the transmission tower taking into account the influence of multiple defects, thereby providing technical support for the operation and maintenance of the transmission tower.

[0021] Through real-time monitoring and probability analysis, the risk of transmission tower displacement can be accurately assessed, thereby achieving preventive maintenance, extending the service life of transmission towers and ensuring the continuity and reliability of power supply.

[0022] In a possible embodiment, the method for evaluating the probability of wind-induced displacement of a transmission tower specifically includes the following steps: Step 1: Perform defect detection on the transmission tower and obtain defect data of the transmission tower; In this embodiment, the defect data of the transmission tower includes the settlement displacement of the tower legs, the corrosion distribution of the rods, the bolt falling-off situation and the structural dynamic characteristics of the transmission tower.

[0023] Perform defect detection on transmission towers and obtain defect data of transmission towers, including: ① Carry out settlement detection on the transmission tower to obtain the settlement displacement of the tower legs.

[0024] Specifically, Figure 2 As shown, a settlement detection device is provided at the tower leg of the transmission tower, and the settlement detection device is used to perform settlement detection on the transmission tower to obtain the settlement displacement of the tower leg of the transmission tower. Figure 2 In the figure, B1 represents the settlement detection device arranged at the tower leg No. 1 of the transmission tower, B2 represents the settlement detection device arranged at the tower leg No. 2 of the transmission tower, B3 represents the settlement detection device arranged at the tower leg No. 3 of the transmission tower, and B4 represents the settlement detection device arranged at the tower leg No. 5 of the transmission tower.

[0025] ② Take photos and inspect the transmission towers to obtain the distribution of corrosion on the transmission tower poles and the status of bolt shedding.

[0026] Specifically, drones are used to photograph and inspect transmission towers to obtain image data of the transmission towers. Based on the image data of the transmission towers, machine vision methods are used to obtain the corrosion distribution of the transmission tower poles and the bolt falling conditions.

[0027] ③ Collect the acceleration response of the transmission tower, and based on the acceleration response of the transmission tower, use the modal identification method to obtain the structural dynamic characteristics of the transmission tower.

[0028] Specifically, Figure 2 As shown, an acceleration sensor is set at the tower section position of the transmission tower, the acceleration response of the transmission tower is collected by the acceleration sensor, and based on the acceleration response of the transmission tower, the structural dynamic characteristics of the transmission tower are obtained by using a modal identification method. Figure 2 In FIG. 1 , A1-A7 represent acceleration sensors installed at the 1st to 7th tower sections of the transmission tower.

[0029] Step 2: Based on the defect data of the transmission tower, a finite element model of the transmission tower including defects is constructed; In this embodiment, based on the defect data of the transmission tower, constructing a finite element model of the transmission tower including the defects specifically includes the following steps: Step 1: Construct an initial finite element model based on the construction drawings of the transmission tower; Step 2: Based on the defect data of the transmission tower, the initial finite element model is modified to obtain a finite element model of the transmission tower including defects.

[0030] In this embodiment, based on the defect data of the transmission tower, the initial finite element model is modified including: ①According to the settlement displacement of the tower legs of the transmission tower, correct the position of the corresponding tower legs of the transmission tower.

[0031] Specifically, the settlement displacement of the tower legs of the transmission tower is monitored in real time, and the position of the corresponding tower leg of the transmission tower is corrected according to the settlement displacement of the tower legs of the transmission tower obtained through real-time monitoring.

[0032] ② According to the corrosion distribution of the transmission tower rods, correct the average cross-sectional thickness of the corresponding rods of the transmission tower.

[0033] Specifically, according to the positions of the corrosion distribution of the rods of the transmission tower, the average cross-sectional thickness at the corresponding positions of the corresponding rods of the transmission tower is corrected.

[0034] ③According to the bolt falling-off situation of the transmission tower, correct the constraints of the corresponding nodes of the transmission tower.

[0035] Specifically, if all the bolts at a node of the transmission tower fall off, the constraint of the node is canceled; if some of the bolts at a node of the transmission tower fall off, the constraint of the node is modified from consolidation to hinged.

[0036] ④ Taking the component material parameters of the transmission tower as uncertain variables and the structural dynamic characteristics of the transmission tower as the objective function, the finite element correction method is used to correct the structural material parameters of the transmission tower.

[0037] Specifically, the component material parameters of the transmission tower are taken as uncertain variables, the structural dynamic characteristics of the transmission tower are taken as the objective function, and the finite element correction method is used to determine the structural material parameters of the transmission tower, thereby constructing a finite element model of the transmission tower containing defects.

[0038] Step 3: Based on the finite element model of the transmission tower including defects, the displacement response of the transmission tower is calculated according to the corrosion depth time history samples and wind speed time history samples of the transmission tower; In this embodiment, based on the finite element model of the transmission tower including defects, according to the corrosion depth time history samples and wind speed time history samples of the transmission tower, calculating the displacement response of the transmission tower specifically includes the following steps: Step 1: Generate wind load based on wind speed time history sample; Step 2: Update the corrosion depth time history samples of the transmission tower to the finite element model of the transmission tower containing defects to obtain a probabilistic finite element model that considers the uncertainty of the corrosion depth; Step 3: Apply wind loads to the probabilistic finite element model considering the uncertainty of corrosion depth and calculate the displacement response of the transmission tower.

[0039] Step 4: Based on the displacement response of the transmission tower, the wind-induced displacement probability assessment of the transmission tower is performed to obtain the wind-induced displacement probability assessment result of the transmission tower.

[0040] In this embodiment, based on the displacement response of the transmission tower, the wind-induced displacement probability assessment of the transmission tower is performed, and obtaining the wind-induced displacement probability assessment result of the transmission tower specifically includes the following steps: Step 1: Use probability density evolution theory to analyze the displacement response of the transmission tower and calculate the probability distribution function of the displacement response of the transmission tower; Step 2: Based on the displacement response probability distribution function of the transmission tower, the wind-induced displacement probability of the transmission tower is evaluated to obtain the wind-induced displacement probability evaluation result of the transmission tower.

[0041] The transmission tower wind-induced displacement probability assessment method provided in this embodiment comprehensively considers various defects of the transmission tower, such as settlement, corrosion, and loose bolts, and provides a comprehensive transmission tower safety evaluation system, which can more accurately assess the overall stability and displacement risk of the transmission tower, and can provide real-time monitoring and risk quantification to reduce the maintenance cost of the transmission tower and improve the safety management efficiency of the transmission tower.

[0042] In a possible embodiment, a method for obtaining a time-history sample of corrosion depth and a time-history sample of wind speed of a transmission tower includes: taking the corrosion depth of the transmission tower as a random variable obeying a normal distribution, performing joint sampling with a random parameter of a wind field, obtaining a time-history sample of corrosion depth of the transmission tower, and obtaining a time-history sample of wind speed using a spectral representation method.

[0043] Specifically, the calculation formula for the corrosion depth of the transmission tower is: ; in, Indicates the corrosion depth of the transmission tower. represents the exposure (service) time of the transmission tower (years), It represents the average corrosion rate of the transmission tower in the first year, which is obtained based on the natural exposure test data of the test station, and the unit is , It represents the metal environmental characteristic parameter, and the value for steel is 0.523.

[0044] In this embodiment, the joint sampling may adopt a number theory point selection method.

[0045] Taking a transmission tower that has been in service for ten years and has a tower height of 36.3m and a call height of 30m as an example, it is assumed that the elastic modulus of the component is 2.06×105MPa, no bolts fall off, and the settlement displacement of the No. 2 tower leg is 0.005m, and the main material of the entire tower is corroded; assuming that the transmission tower is in a corrosive environment of subtropical humid climate (urban atmosphere), the corrosiveness level is C4, and taking Wuhan as an example, according to the data provided by the China Corrosion and Protection Network, the corrosion rate in the first year is 58μm / a. The wind-induced vibration displacement probability evaluation method of the transmission tower provided in this embodiment is used to perform a probability evaluation on the wind-induced vibration displacement response of the top of the transmission tower.

[0046] The specific implementation steps are as follows: (1) Structural dynamic characteristics measurement and defect detection of transmission towers. The specific methods are as follows: First, an acceleration sensor is arranged at the tower section of the transmission tower, and a settlement detection device is arranged at the tower leg position to obtain the actual wind-induced vibration acceleration response of the transmission tower and the settlement displacement of the tower leg. The instrument is arranged at the following positions: Figure 2 As shown; Secondly, drones are used to take photos of the poles of the transmission tower, and the pre-trained YOLOV5 model is used to identify the rusted area of ​​the poles and the bolt falling off.

[0047] (2) Establish a finite element model of the transmission tower including defects. The specific method is as follows: First, the initial finite element model was established according to the construction drawings; Secondly, based on the calculation formula of the corrosion depth of the transmission tower, the corrosion depth of the transmission tower is calculated to be 0.2mm; Secondly, the finite element model was modified based on the test data, the thickness of the main material section was reduced by 0.2mm, and a vertical displacement of 0.005m was applied to the No. 2 tower leg; Secondly, based on the measured acceleration response time history, the SSI modal identification method was used to identify that the first-order bending frequency of the transmission tower was 1.613Hz and the second-order bending frequency was 1.639Hz; Finally, the elastic modulus of the component is taken as a random variable, and the measured dynamic characteristics of the transmission tower are taken as the optimization target. The zero-order optimization algorithm is used to identify that the elastic modulus of the component is 2.01×105MPa. The elastic modulus of the component is updated to establish a finite element model of the transmission tower with defects.

[0048] (3) The corrosion depth is taken as a random variable, which obeys a normal distribution with a mean of 0.2 mm and a coefficient of variation of 0.33. The corrosion depth and wind field random parameters are jointly sampled by the number theory point selection method to obtain a random sample of the corrosion depth, such as Figure 3 As shown; the spectral representation method is used to generate wind speed time history samples with an average wind speed of 15-35m / s. 135 random samples are generated at each wind speed. The representative sample time history with an average wind speed of 20m / s is shown as follows Figure 4 shown.

[0049] (4) The corresponding wind load time history is applied to the finite element model of the transmission tower including defects and considering corrosion uncertainty, and 135 tower top displacement response samples are calculated.

[0050] (5) The ratio of the tower top displacement to the tower height is defined as the relative deflection. The probability density evolution theory is used to calculate the probability distribution function of the relative deflection of the transmission tower top at a wind speed of 15-35 m / s, as follows: Figure 5As shown in the figure, the probability that the relative deflection of the transmission tower in this embodiment reaches 0.004 (i.e., the displacement of the tower top is 145 mm) at a wind speed of 20 m / s is 76.7%; the probability that the relative deflection of the tower top reaches 0.006 (i.e., the displacement of the tower top is 218 mm) at a wind speed of 25 m / s is 45.6%.

[0051] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for evaluating the probability of wind-induced displacement of a transmission tower, characterized in that: include: Conduct defect detection on transmission towers and obtain defect data of transmission towers; Based on the defect data of the transmission tower, a finite element model of the transmission tower including defects is constructed; Based on the finite element model of the transmission tower including defects, the displacement response of the transmission tower is calculated according to the corrosion depth time history samples and wind speed time history samples of the transmission tower; Based on the displacement response of the transmission tower, the wind-induced displacement probability of the transmission tower is evaluated to obtain the wind-induced displacement probability evaluation result of the transmission tower.

2. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 1, characterized in that: The defect data of transmission towers include the settlement displacement of tower legs, rod corrosion distribution, bolt shedding and structural dynamic characteristics.

3. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 1, characterized in that: Perform defect detection on transmission towers and obtain defect data of transmission towers, including: Conduct settlement detection on the transmission tower to obtain the settlement displacement of the tower legs; Take photos and inspect the transmission towers to obtain the distribution of corrosion on the transmission tower poles and the situation of bolt shedding; The acceleration response of the transmission tower is collected, and based on the acceleration response of the transmission tower, the modal identification method is used to obtain the structural dynamic characteristics of the transmission tower.

4. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 1, characterized in that: Based on the defect data of the transmission tower, the finite element model of the transmission tower including defects is constructed, including: Based on the construction drawings of the transmission tower, an initial finite element model was constructed; Based on the defect data of the transmission tower, the initial finite element model is modified to obtain a finite element model of the transmission tower including the defects; Among them, based on the defect data of the transmission tower, the initial finite element model is modified including: According to the settlement displacement of the tower legs of the transmission tower, the position of the corresponding tower legs of the transmission tower is corrected; According to the corrosion distribution of the transmission tower rods, the average cross-sectional thickness of the corresponding transmission tower rods is corrected; According to the bolt falling off of the transmission tower, the constraints of the corresponding nodes of the transmission tower are modified; Taking the component material parameters of the transmission tower as uncertain variables and the structural dynamic characteristics of the transmission tower as the objective function, the finite element correction method is used to correct the structural material parameters of the transmission tower.

5. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 4, characterized in that: According to the bolt falling off of the transmission tower, the constraints of the corresponding nodes of the transmission tower are modified, including: If all the bolts at a node of the transmission tower fall off, the constraint of that node will be cancelled; If the bolts at a node of the transmission tower are partially detached, the constraint of the node is modified from fixed to hinged.

6. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 1, characterized in that: Based on the finite element model of the transmission tower with defects, according to the corrosion depth time history samples and wind speed time history samples of the transmission tower, the displacement response of the transmission tower is calculated including: Generate wind loads based on wind speed time history samples; Update the time history samples of the corrosion depth of the transmission tower to the finite element model of the transmission tower including defects to obtain a probabilistic finite element model that takes into account the uncertainty of the corrosion depth; Wind loads are applied to a probabilistic finite element model considering the uncertainty of corrosion depth, and the displacement response of the transmission tower is calculated.

7. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 1 or 6, characterized in that: The method for obtaining the corrosion depth time history samples and wind speed time history samples of the transmission tower includes: The corrosion depth of the transmission tower is taken as a random variable obeying the normal distribution and is sampled jointly with the random parameters of the wind field to obtain the corrosion depth time history samples of the transmission tower, and the spectral representation method is used to obtain the wind speed time history samples.

8. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 7, characterized in that: The joint sampling adopts the number theory point selection method.

9. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 7, characterized in that: The calculation formula for the corrosion depth of the transmission tower is: ； in, Indicates the corrosion depth of the transmission tower. represents the exposure time of the transmission tower, represents the average corrosion rate of the transmission tower in the first year, Represents the metal environment characteristic parameters.

10. The method for evaluating the probability of wind-induced displacement of a transmission tower according to claim 1, characterized in that: Based on the displacement response of the transmission tower, the wind-induced displacement probability of the transmission tower is evaluated. The wind-induced displacement probability evaluation results of the transmission tower include: The probability density evolution theory is used to analyze the displacement response of the transmission tower and calculate the probability distribution function of the displacement response of the transmission tower; Based on the displacement response probability distribution function of the transmission tower, the wind-induced displacement probability assessment of the transmission tower is performed to obtain the wind-induced displacement probability assessment result of the transmission tower.

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